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Gene Information

Gene symbol: TNFRSF10A

Gene name: tumor necrosis factor receptor superfamily, member 10a

HGNC ID: 11904

Synonyms: DR4, Apo2, TRAILR-1, CD261

Related Genes

# Gene Symbol Number of hits
1 BAK1 1 hits
2 BAX 1 hits
3 BBC3 1 hits
4 BCL2 1 hits
5 BCL2L1 1 hits
6 BCL2L11 1 hits
7 BRWD2 1 hits
8 C21orf63 1 hits
9 C4A 1 hits
10 C4B 1 hits
11 CASP3 1 hits
12 CD4 1 hits
13 CD8A 1 hits
14 COL9A3 1 hits
15 CTLA4 1 hits
16 DGCR2 1 hits
17 DR1 1 hits
18 DYNLT1 1 hits
19 GAD1 1 hits
20 GAD2 1 hits
21 GLO1 1 hits
22 HAGH 1 hits
23 HLA-A 1 hits
24 HLA-B 1 hits
25 HLA-DOB 1 hits
26 HLA-DQA1 1 hits
27 HLA-DRB1 1 hits
28 HNF1A 1 hits
29 IDDM2 1 hits
30 IGKV1-17 1 hits
31 IGKV2-23 1 hits
32 INS 1 hits
33 KIR2DL1 1 hits
34 KIR2DL2 1 hits
35 LTA 1 hits
36 MCL1 1 hits
37 MICA 1 hits
38 MRAP 1 hits
39 MT3 1 hits
40 NDUFA5 1 hits
41 NDUFB4 1 hits
42 PMAIP1 1 hits
43 PPY 1 hits
44 PTPN22 1 hits
45 PTPRN 1 hits
46 RANGAP1 1 hits
47 SEC14L2 1 hits
48 SUMO4 1 hits
49 TAP2 1 hits
50 TNF 1 hits
51 TNFRSF10B 1 hits
52 TNFRSF10C 1 hits
53 TNFRSF10D 1 hits
54 TNFRSF21 1 hits
55 TNFRSF25 1 hits
56 TNFSF10 1 hits
57 TOR1A 1 hits
58 TP53 1 hits
59 WFS1 1 hits

Related Sentences

# PMID Sentence
1 1348711 In Finland the haplotype-specific absolute risk for developing Type 1 diabetes differs between various DR3 and DR4 positive haplotypes.
2 1348711 The absolute risk for Type 1 diabetes for DR4,DQw8 positive haplotypes A2,Cw4,Bw35,DR4 A3,Cw3,Bw62,DR4, A24,Cw7,Bw39,DR4, A2,Cw3,Bw62, DR4, and A2,Cw1,Bw56,DR4 was 35/100,000, 130/100,000, 166/100,000, 196/100,000, and 218/100,000, respectively.
3 1348711 In Finland the haplotype-specific absolute risk for developing Type 1 diabetes differs between various DR3 and DR4 positive haplotypes.
4 1348711 The absolute risk for Type 1 diabetes for DR4,DQw8 positive haplotypes A2,Cw4,Bw35,DR4 A3,Cw3,Bw62,DR4, A24,Cw7,Bw39,DR4, A2,Cw3,Bw62, DR4, and A2,Cw1,Bw56,DR4 was 35/100,000, 130/100,000, 166/100,000, 196/100,000, and 218/100,000, respectively.
5 1349195 The DR9-associated disease-susceptibility allele in Japanese subjects is distinct from both the DR3- and DR4-associated susceptibility alleles in white Caucasians.
6 1355747 By using the aetiologic fraction (delta) as an almost absolute measure of the strongest linkage disequilibrium of an HLA marker to the putative Type 1 diabetes susceptibility locus, it has been found that the strength of association of the HLA markers may be quantified as follows: DR4 less than DR3 less than DR3 or DR4 less than non-Aspartate 57 beta DQ and Arginine 52 alpha DQ less than Arginine 52 alpha DQ.
7 1355747 Thus, molecular HLA-DQ markers appear to be more accurate as susceptibility markers than the classic serologically defined ones (DR3 and DR4); however, any effect of DQ markers disappears when non-DR3/DR4 individuals are considered, suggesting that DR factors (or others in between DQ and DR) are also important.
8 1355747 By using the aetiologic fraction (delta) as an almost absolute measure of the strongest linkage disequilibrium of an HLA marker to the putative Type 1 diabetes susceptibility locus, it has been found that the strength of association of the HLA markers may be quantified as follows: DR4 less than DR3 less than DR3 or DR4 less than non-Aspartate 57 beta DQ and Arginine 52 alpha DQ less than Arginine 52 alpha DQ.
9 1355747 Thus, molecular HLA-DQ markers appear to be more accurate as susceptibility markers than the classic serologically defined ones (DR3 and DR4); however, any effect of DQ markers disappears when non-DR3/DR4 individuals are considered, suggesting that DR factors (or others in between DQ and DR) are also important.
10 1357169 Accordingly, no overrepresentation of homozygosity for HLA-DR4 was found among the total number of 25 patients with RA as well as insulin dependent diabetes mellitus, though the opposite might be expected as these diseases have a common DR4 association--RA with DR4 and DR1 and insulin dependent diabetes mellitus with DR4 and DR3.
11 1360432 Among Australians heterozygous for HLA-DR3, DR4, 85% were positive for antibodies to glutamic acid decarboxylase, significantly different (p = 0.039) from the prevalence of 48% in patients with at least one HLA-DR antigen other than DR3 or DR4.
12 1361076 The genes located between class II and class I HLA genes including polymorphic tumour necrosis factor (TNF) genes may contribute to the disease susceptibility in IDDM.
13 1361076 Restriction fragment polymorphisms of the TNF-beta gene have been found to be fixed in the major IDDM susceptibility haplotypes, the B62,DR4 haplotype being associated with the 10.5-kb fragment and the B8,DR3 haplotype with a 5.5-kb fragment.
14 1361076 Among IDDM haplotypes the B62,DR4 haplotype was characterized by the 10.5-kb TNF fragment, whereas two other common Finnish IDDM-associated DR4 haplotypes--A24,B39,DR4 and A2,B56,DR4--had the 5.5-kb TNF fragment.
15 1361076 Both IDDM-associated and non-associated DR3 positive haplotypes were linked to the 5.5-kb fragment.
16 1361076 The distribution of various combinations of TNF alleles in IDDM probands (n = 63) did not differ from that expected according to the Hardy-Weinberg distribution.
17 1361076 Our results indicate that the 10.5-kb allele of TNF-beta gene as such is not a risk factor contributing to DR4/DQ8-associated susceptibility.
18 1361076 The genes located between class II and class I HLA genes including polymorphic tumour necrosis factor (TNF) genes may contribute to the disease susceptibility in IDDM.
19 1361076 Restriction fragment polymorphisms of the TNF-beta gene have been found to be fixed in the major IDDM susceptibility haplotypes, the B62,DR4 haplotype being associated with the 10.5-kb fragment and the B8,DR3 haplotype with a 5.5-kb fragment.
20 1361076 Among IDDM haplotypes the B62,DR4 haplotype was characterized by the 10.5-kb TNF fragment, whereas two other common Finnish IDDM-associated DR4 haplotypes--A24,B39,DR4 and A2,B56,DR4--had the 5.5-kb TNF fragment.
21 1361076 Both IDDM-associated and non-associated DR3 positive haplotypes were linked to the 5.5-kb fragment.
22 1361076 The distribution of various combinations of TNF alleles in IDDM probands (n = 63) did not differ from that expected according to the Hardy-Weinberg distribution.
23 1361076 Our results indicate that the 10.5-kb allele of TNF-beta gene as such is not a risk factor contributing to DR4/DQ8-associated susceptibility.
24 1361076 The genes located between class II and class I HLA genes including polymorphic tumour necrosis factor (TNF) genes may contribute to the disease susceptibility in IDDM.
25 1361076 Restriction fragment polymorphisms of the TNF-beta gene have been found to be fixed in the major IDDM susceptibility haplotypes, the B62,DR4 haplotype being associated with the 10.5-kb fragment and the B8,DR3 haplotype with a 5.5-kb fragment.
26 1361076 Among IDDM haplotypes the B62,DR4 haplotype was characterized by the 10.5-kb TNF fragment, whereas two other common Finnish IDDM-associated DR4 haplotypes--A24,B39,DR4 and A2,B56,DR4--had the 5.5-kb TNF fragment.
27 1361076 Both IDDM-associated and non-associated DR3 positive haplotypes were linked to the 5.5-kb fragment.
28 1361076 The distribution of various combinations of TNF alleles in IDDM probands (n = 63) did not differ from that expected according to the Hardy-Weinberg distribution.
29 1361076 Our results indicate that the 10.5-kb allele of TNF-beta gene as such is not a risk factor contributing to DR4/DQ8-associated susceptibility.
30 1448547 One-hundred and seventy-two normotensive, insulin-dependent diabetic patients without clinical proteinuria (Albustix negative) were typed for the major histocompatibility complex class I (HLA-A, -B) and class II (HLA-DR) antigens.
31 1448547 There was no significant association between UA/UC and HLA-B8, -B15, -DR3, -DR4 or other antigens.
32 1451952 DR3,4 heterozygosity identified higher risk (16% after 8 years, 12% by age 22 years, p less than 10(-5)) than HLA-identity (10% and 7%, respectively, p less than 0.01); risks for DR3 or DR4 positive and for haplo-identical siblings were low (4%, 3% and 4.4%, respectively, NS).
33 1478368 DR2 antigen was found with decreased frequency in patients whereas no DR3/DR4 heterozygotes were observed.
34 1485950 Susceptibility to insulin-dependent diabetes mellitus (IDDM) correlates with the absence of aspartic acid in position 57 of the DQB1 and/or the presence of arginine in position 52 of the DQA1.
35 1485950 Two-thirds of these combinations were explained by DR3,DR4 heterozygotes.
36 1485950 These findings, together with the fact that the lowest frequency of DR3,DR4 heterozygosity (21%) was seen in Finland, show that heterozygosity for DQ and DR cannot explain the differences seen in IDDM incidence.
37 1485950 Susceptibility to insulin-dependent diabetes mellitus (IDDM) correlates with the absence of aspartic acid in position 57 of the DQB1 and/or the presence of arginine in position 52 of the DQA1.
38 1485950 Two-thirds of these combinations were explained by DR3,DR4 heterozygotes.
39 1485950 These findings, together with the fact that the lowest frequency of DR3,DR4 heterozygosity (21%) was seen in Finland, show that heterozygosity for DQ and DR cannot explain the differences seen in IDDM incidence.
40 1502499 It is well known that certain genes in the HLA-D region confer increased susceptibility to insulin-dependent diabetes mellitus (IDDM).
41 1502499 Previous studies have documented an increased risk associated with the HLA-DR beta chain alleles, DR3 and DR4, and the DQ beta chain allele DQB1*0302 (formerly DQw8).
42 1548146 Complementation of HLA-DQA and -DQB genes confers susceptibility and protection to insulin-dependent diabetes mellitus.
43 1548146 Lack of an aspartic acid 57 in the HLA-DQ beta chain was introduced as a genetic marker of insulin-dependent diabetes mellitus (IDDM).
44 1548146 The new susceptibility genotype DQA3-DQB3.2/DQA4.1-DQB2 (DQA1*0301-DQB1*0302/DQA1*0501-DQB1*0201) may explain the well-known excess of DR3/DR4 heterozygous IDDM patients and is expected to help identify individuals at risk for developing the disease.
45 1576360 HLA-antigens in Italian type 1 diabetic patients: role of DR3/DR4 antigens and breast feeding in the onset of the disease.
46 1576360 HLA-A, B, C, DR and DQ typing was performed in 381 Italian insulin-dependent diabetic patients and in 905 normal Italian subjects.
47 1576360 The diabetic patients had significantly higher frequencies of HLA-Cw7, B8, B18, DR3, DR4, DQw2 and DQw3 and significantly lower frequencies of HLA-B17, Bw51, DR2, DR7 and DRw11.
48 1576360 HLA-antigens in Italian type 1 diabetic patients: role of DR3/DR4 antigens and breast feeding in the onset of the disease.
49 1576360 HLA-A, B, C, DR and DQ typing was performed in 381 Italian insulin-dependent diabetic patients and in 905 normal Italian subjects.
50 1576360 The diabetic patients had significantly higher frequencies of HLA-Cw7, B8, B18, DR3, DR4, DQw2 and DQw3 and significantly lower frequencies of HLA-B17, Bw51, DR2, DR7 and DRw11.
51 1628763 It has been proposed that this difference in susceptibility depends on the absence (in the DR3 and DR4 haplotypes) or the presence (in the DR2 haplotype) of Asp57 in the DQ beta-chain.
52 1633634 The association of insulin-dependent diabetes mellitus and HLA began with weak associations of Class I antigens (B8 and B15) and progressed to Class II antigens (DR3 and DR4), then to subtypes of DR4 (Dw4, 10, and 14), and now to DQ molecules including the absence of aspartic acid at position 57 of the DQ beta chain and the presence of arginine at position 52 of the DQ alpha chain.
53 1633634 In rheumatoid arthritis (RA) the HLA antigen association remains with certain Class II molecules of the DR series (DR4 and DR1) that share amino acid sequences with a restricted number of other DR antigens seen in RA, as well as a segment of the gp 110 protein of the Epstein-Barr virus.
54 1633634 The association of insulin-dependent diabetes mellitus and HLA began with weak associations of Class I antigens (B8 and B15) and progressed to Class II antigens (DR3 and DR4), then to subtypes of DR4 (Dw4, 10, and 14), and now to DQ molecules including the absence of aspartic acid at position 57 of the DQ beta chain and the presence of arginine at position 52 of the DQ alpha chain.
55 1633634 In rheumatoid arthritis (RA) the HLA antigen association remains with certain Class II molecules of the DR series (DR4 and DR1) that share amino acid sequences with a restricted number of other DR antigens seen in RA, as well as a segment of the gp 110 protein of the Epstein-Barr virus.
56 1676704 It has been found that: 1) DQA2 (U allele) is not a susceptibility factor, 2) non-aspartic acid homozygosity in residue 57 (Asp 57 negative) of the DQ beta chains is positively correlated with insulin-dependent diabetes mellitus (IDDM), and 3) DQ beta Asp-57-negative and DQ alpha arginine-52-positive (Arg-52-positive) individuals are increased among diabetic patients; this latter analysis shows a higher etiologic fraction (delta) value than the one obtained when considering only homozygous DQ beta Asp-57-negative individuals.
57 1676704 These data do not discard the possibility that DR3/DR4 may contain the primary susceptibility factors.
58 1682241 The combination of the HLA complement allotypes BFS, C2C, C4AQ0 (deleted gene) and C4B1, termed SC01 complotype, usually present in the HLA-B8,DR3,DQw2 diabetogenic haplotype, has also been found in a novel "low frequency" HLA-B49,DR4,DQw8 haplotype associated with Spanish insulin-dependent diabetes mellitus (IDDM).
59 1682241 On the other hand, HLA-B49,SC01,DR4 is the first DR4-bearing IDDM-susceptible haplotype with a deleted C4 gene described so far and the only DR4-bearing haplotype found in the Spanish population.
60 1685266 Eighteen unrelated Chinese patients with insulin-dependent diabetes mellitus (IDDM) were analyzed for HLA Class II genes using a variety of molecular biological techniques including restriction fragment length polymorphism (RFLP), polymerase chain reaction with allele-specific oligonucleotides (PCR-ASO) and direct DNA sequencing.
61 1685266 The high frequency of DR3/DR4 heterozygotes found in the Chinese with IDDM strengthens the importance of this combination of haplotypes in IDDM susceptibility since it is present in two genetically distant populations--Chinese and Caucasians.
62 1688161 Heterozygous siblings who carried both DR3DQw2 and DR4DQw8 subtypes disclosed a highly increased risk and more than 80% of DR3/DR4 affected siblings received a paternal DR4DQw8 together with a maternal DR3DQw2.
63 1750745 HLA typing studies demonstrated a high prevalence of DR3 and DR4 alleles and especially of simultaneous expression of both these alleles.
64 1783573 DR4-related autoimmune disorders such as rheumatoid arthritis (RA) and insulin-dependent diabetes mellitus (IDDM) are virtually unknown in indigenous populations of Australia and Oceania and this study confirmed that high-risk RA determinants, Dw4 and Dw14, occurred rarely.
65 1852994 Ninety percent of IDD belong to the DR3 or DR4 group.
66 1890017 To ascertain why HLA-DR2 seems to confer only a moderate resistance to insulin-dependent diabetes mellitus (IDDM) in the high-incidence population of Sardinia, Italy, 32 families having one individual affected with IDDM (the proband) and 31 families without IDDM history were randomly selected from the same geographical area and serologically and molecularly HLA typed.
67 1890017 However, a stratified analysis performed by removing the DR3 and DR4 haplotypes showed that the frequency of this haplotype is significantly increased in IDDM patients.
68 1908143 Distribution of HLA-DRB1, -DQA1 and -DQB1 alleles and DQA1-DQB1 genotypes among Norwegian patients with insulin-dependent diabetes mellitus.
69 1908143 We have studied 87 unrelated Caucasian insulin-dependent diabetes mellitus (IDDM) patients and 181 healthy controls by oligotyping for 20 DRB1, eight DQA1 and 13 DQB1 alleles, and established their DR-DQ haplotypes and DQ genotypes.
70 1908143 An increase of DRB1 alleles encoding DR4 was found among IDDM patients, but the distribution of DR4 subtypes did not differ among DR4-positive IDDM patients and controls.
71 1916001 Studies of various insulin-dependent diabetes mellitus (IDDM) populations have shown that certain HLA antigens confer a high risk of developing disease.
72 1916001 DR3/DR4, although more frequent, did not achieve statistical significance.
73 1930940 The aetiology of insulin-dependent diabetes (IDDM) involves genetic predisposition, a major component of which has been mapped in the HLA complex, near to or identical with genes encoding class II molecules.
74 1930940 The particularly high risk of DR3/DR4 heterozygotes suggests that susceptibility is determined by two genes acting synergistically.
75 1972363 A significant increase in the frequency of DPw3/6 alleles defined by restriction-fragment-length polymorphism is observed in insulin-dependent diabetes mellitus (IDDM) patients relative to healthy control subjects (34.6 vs. 10.5%, P less than 0.009).
76 1972363 Log-linear modeling demonstrates that this association is independent of HLA-DR3 and -DR4 and IDDM association and cannot be attributed to linkage disequilibrium between HLA-DP and -DR.
77 1972363 The strength of the DPw3/6 association is not significantly less than that of either DR3 or DR4.
78 1972363 A significant increase in the frequency of DPw3/6 alleles defined by restriction-fragment-length polymorphism is observed in insulin-dependent diabetes mellitus (IDDM) patients relative to healthy control subjects (34.6 vs. 10.5%, P less than 0.009).
79 1972363 Log-linear modeling demonstrates that this association is independent of HLA-DR3 and -DR4 and IDDM association and cannot be attributed to linkage disequilibrium between HLA-DP and -DR.
80 1972363 The strength of the DPw3/6 association is not significantly less than that of either DR3 or DR4.
81 1995752 Frequencies of DR3 and DR4 were significantly increased in both the diabetics and their unaffected siblings relative to the general population and DR2 was decreased.
82 1995752 Forty-six percent of diabetic children possessed both DR3 and DR4 antigens while only 7% had neither.
83 1995752 The findings are consistent with those in other geographical areas and give strong support to the role of DR3 and DR4 antigens as markers for diabetes susceptibility genes.
84 1995752 Frequencies of DR3 and DR4 were significantly increased in both the diabetics and their unaffected siblings relative to the general population and DR2 was decreased.
85 1995752 Forty-six percent of diabetic children possessed both DR3 and DR4 antigens while only 7% had neither.
86 1995752 The findings are consistent with those in other geographical areas and give strong support to the role of DR3 and DR4 antigens as markers for diabetes susceptibility genes.
87 1995752 Frequencies of DR3 and DR4 were significantly increased in both the diabetics and their unaffected siblings relative to the general population and DR2 was decreased.
88 1995752 Forty-six percent of diabetic children possessed both DR3 and DR4 antigens while only 7% had neither.
89 1995752 The findings are consistent with those in other geographical areas and give strong support to the role of DR3 and DR4 antigens as markers for diabetes susceptibility genes.
90 1996407 HLA-class III region genes may be associated with susceptibility to insulin-dependent diabetes mellitus (IDDM).
91 1996407 In this study an NcoI polymorphism of the tumour necrosis factor beta (TNF-beta) gene, which is positioned next to the tumour necrosis factor alpha (TNF-alpha) gene in the HLA class III region, was detected by restriction fragment length polymorphism (RFLP).
92 1996407 In all groups there was a haplotype assignment of the TNF-beta 5.5-kb allele to B8,DR3 haplotypes, and of the TNF-beta 10.5-kb allele to B15,DR4-positive haplotypes.
93 1996407 The allelic and genotypic frequencies differed between DR3,4 IDDM patients and DR3,4 controls, and the DR3,4 control group differed significantly from the randomly selected control group (P less than 0.0079).
94 1996407 In HLA-DR3,4- and DQw8-positive persons, the DR3 haplotypes carried the 10.5-kb allele three times more frequently in IDDM patients than in controls, suggesting that the 10.5-kb allele when present on DR3 haplotypes may contribute to susceptibility to IDDM in DR3,4 heterozygous individuals.
95 1996407 A contributory role of the 10.5-kb allele in genetic IDDM susceptibility was supported by the sibpair analysis, in which all were TNF-beta identical.
96 1996407 Twenty-five healthy and eight newly diagnosed IDDM patients were randomly selected to study the Escherichia coli lipopolysaccharides (LPS)-purified protein derivate (tuberculin) (PPD)-, and phytohaemagglutinin (PHA)-stimulated monocyte (Mo) secretions of interleukin 1 beta (IL-1 beta) and TNF-alpha in relation to the NcoI TNF-beta gene polymorphism.
97 1996407 The LPS- and PHA-stimulated Mo IL-1 beta and TNF-alpha secretions were significantly lower for the TNF-beta 5.5/10.5 kb heterozygous individuals than for TNF-beta 10.5 kb homozygous individuals.
98 1996407 Furthermore, the Mo IL-1 beta and TNF-alpha secretions of IDDM patients were significantly higher than the Mo secretions of TNF-beta genotype-matched healthy controls.
99 1996407 This study suggests an association between the 10.5 kb TNF-beta allele and IDDM, and demonstrates an association between monokine responses and TNF-beta genotypes.
100 2006934 Insulin-dependent diabetes mellitus is associated with an increased frequency of certain histocompatibility antigens located on chromosome six, the most common types being B-8, B-15, DR-3, DR-4, and DR-7.
101 2045289 The mode of inheritance of the DR3- and DR4-associated susceptibility genotype is essentially recessive, based on both the segregation data and the existence of Hardy-Weinberg equilibrium in Ashkenazi Jewish and possibly in patients of other populations. 2.
102 2069353 The mechanism of pancreatic beta-cell destruction in type I (insulin-dependent) diabetes mellitus (IDDM) involves autoimmune events directed against these cells.
103 2069353 HLA alleles associated with IDDM include DR3 and DR4, with the risk of IDDM being especially high in individuals with the heterozygous combination DR3/DR4.
104 2075784 The frequency of HLA-B18, DR3 and DR4 antigens was significantly increased whereas DR2, DR5 and DR7 were decreased in comparison with 189 healthy unrelated controls without family history of diabetes.
105 2075784 We found no statistically significant relationship between HLA antigens and the other variables studied including the presence of islet cell antibodies, complement fixing islet cell antibodies, insulin autoantibodies, organ-specific antibodies, fasting and maximal glucagon stimulated C-peptide levels, initial glycemia and glycosylated hemoglobin.
106 2096182 Insulin-dependent diabetes mellitus (IDDM) is associated with several DR3- or DR4-containing ancestral haplotypes (AHs).
107 2096182 The MHC contains several regions of potential interest in relation to susceptibility to IDDM; these may explain the association with only certain DR3- and DR4-carrying AH and DR3,4 heterozygosity in terms of cis and trans interactions.
108 2096182 Insulin-dependent diabetes mellitus (IDDM) is associated with several DR3- or DR4-containing ancestral haplotypes (AHs).
109 2096182 The MHC contains several regions of potential interest in relation to susceptibility to IDDM; these may explain the association with only certain DR3- and DR4-carrying AH and DR3,4 heterozygosity in terms of cis and trans interactions.
110 2101347 HLA class I and class II antigens were studied in 97 unrelated IDDM patients, 33 complete families with at least one affected member each, and 559 healthy controls.
111 2101347 The genotype analysis of the patients showed a strong increase of the DR3/DR4 heterozygotes with a relative risk higher than that of the DR3 and DR4 homozygotes.
112 2187461 Supratypes and ancestral haplotypes in IDDM: potential importance of central non-HLA MHC genes.
113 2187461 This approach avoids the confusion which has resulted from using DR3 or DR4 which are only sometimes associated with the relevant genes.
114 2190442 UAE values were positively correlated with age, GH secretion, but not with duration of disease, glycosylated hemoglobin, renal size or N-acetyl-beta-glucosaminidase excretion.
115 2190442 HLA DR3/DR4 heterozygosity frequency was significantly higher (p less than 0.01) in the microalbuminuric group than in the normoalbuminuric.
116 2190442 HLA DR3/DR4 heterozygosity, onset of disease at puberty and higher GH values, the probability of developing abnormal levels of UAE will increase.
117 2190442 UAE values were positively correlated with age, GH secretion, but not with duration of disease, glycosylated hemoglobin, renal size or N-acetyl-beta-glucosaminidase excretion.
118 2190442 HLA DR3/DR4 heterozygosity frequency was significantly higher (p less than 0.01) in the microalbuminuric group than in the normoalbuminuric.
119 2190442 HLA DR3/DR4 heterozygosity, onset of disease at puberty and higher GH values, the probability of developing abnormal levels of UAE will increase.
120 2204051 Distinct relationship of antigens DR3 and DR4 with a clinical course of disease and its severity was undetectable.
121 2254897 An increased frequency of HLA-B8, DR3 and DR4 in patients with insulin dependent diabetes mellitus (IDDM) compared to controls and patients with noninsulin dependent diabetes mellitus (NIDDM) was confirmed.
122 2254897 No correlation was found between DR3, DR4 and limited joint mobility or diabetic complications.
123 2254897 An increased frequency of HLA-B8, DR3 and DR4 in patients with insulin dependent diabetes mellitus (IDDM) compared to controls and patients with noninsulin dependent diabetes mellitus (NIDDM) was confirmed.
124 2254897 No correlation was found between DR3, DR4 and limited joint mobility or diabetic complications.
125 2266274 No significant differences in the frequencies of DR3, DR4, or DR2 were found between patients with insulin-dependent diabetes and patients with normal glucose tolerance or between any of these groups and controls.
126 2298852 HLA-DR3 or -DR4 segregation distortion to normal or insulin-dependent (ID) diabetic offspring of 108 Spanish families whose parents were healthy was not observed; however, DR3 or DR4 ID offspring is significantly increased in the present study, since parents were chosen after tracing ID children.
127 2298852 Thus, ethnic group differences in a genetic (T/t-like) or metabolic mechanism might confer advantages to DR3- or DR4-bearing gametes from ID diabetic parents, but segregation distortion might only affect certain HLA DR3 or DR4 extended haplotypes which are frequent and characteristic for certain ethnic groups (i.e.
128 2298852 HLA-DR3 or -DR4 segregation distortion to normal or insulin-dependent (ID) diabetic offspring of 108 Spanish families whose parents were healthy was not observed; however, DR3 or DR4 ID offspring is significantly increased in the present study, since parents were chosen after tracing ID children.
129 2298852 Thus, ethnic group differences in a genetic (T/t-like) or metabolic mechanism might confer advantages to DR3- or DR4-bearing gametes from ID diabetic parents, but segregation distortion might only affect certain HLA DR3 or DR4 extended haplotypes which are frequent and characteristic for certain ethnic groups (i.e.
130 2384193 The gene frequencies, haplotype relative risks, and zygotic assortments of HLA-DR in three ethnically defined samples of insulin-dependent diabetes mellitus (IDDM) patients were determined in a prospective family study.
131 2384193 Although DR3 and DR4 were positively associated with IDDM in the probands of 123 northern European, 94 Ashkenazi Jewish, and 49 New York Hispanic families, significant excess of DR*3/4 heterozygotes was observed only among the probands from families of northern European ancestry.
132 2401398 We analysed the inheritance of DR3 and DR4 haplotypes from the father or mother (DR3p, DR4p, DR3m and DR4m, respectively), in the index cases and in the affected and non-affected siblings of 246 diabetic simplex and 41 multiplex families without affected parents.
133 2401398 Among the DR3,4 positive index cases and affected siblings, the paternal and maternal DR3 and DR4 antigens were not distributed randomly: 62% and 72%, respectively, had received DR4 from their father and DR3 from their mother (DR4p/DR3m), while only 38% and 28%, respectively, had received a paternal DR3 together with a maternal DR4 (DR3p/DR4m).
134 2401398 We analysed the inheritance of DR3 and DR4 haplotypes from the father or mother (DR3p, DR4p, DR3m and DR4m, respectively), in the index cases and in the affected and non-affected siblings of 246 diabetic simplex and 41 multiplex families without affected parents.
135 2401398 Among the DR3,4 positive index cases and affected siblings, the paternal and maternal DR3 and DR4 antigens were not distributed randomly: 62% and 72%, respectively, had received DR4 from their father and DR3 from their mother (DR4p/DR3m), while only 38% and 28%, respectively, had received a paternal DR3 together with a maternal DR4 (DR3p/DR4m).
136 2405478 The mechanism of pancreatic B-cell destruction in type I (insulin-dependent) diabetes (IDDM) involves autoimmune phenomena based on genetic predisposition.
137 2405478 The genetic susceptibility is distinguished by increased frequency of the HLA antigens DR3 and DR4 and particularly their heterozygous combination DR3/DR4.
138 2451692 HLA-DR (DR3, DR4, and DR5) and HLA-DQ (DQw2/DQw3) Ag can restrict these T cell responses to human insulin epitopes.
139 2499498 Analysis of HLA haplotypes occurring in more than one, only one, or no diabetics in GAW5 multiplex insulin-dependent diabetes mellitus (IDDM) families suggested: 1) DR3, DR4, DRw6, and DRw8 are positively associated, and DR2 is negatively associated, with IDDM; 2) DR4 haplotypes are more diabetogenic than DR3 haplotypes; some DR3 haplotypes lacking B8/B18 are more diabetogenic than those carrying B8/B18; DR3 haplotypes with DR beta TaqI bands [2,5,10/11] are more diabetogenic than those without; DR4 haplotypes that carry DQw3.2 are more diabetogenic than those that do not; some DR2 haplotypes are diabetogenic rather than protective.
140 2499498 Analysis of DR3 and DR4 transmission from DR3/X and DR4wX (X not equal to 3,4) healthy parents suggested: 3) no distortion of transmission to healthy children and 4) mothers transmit DR4 (and perhaps DR3) less often than fathers to diabetic children.
141 2499498 Analysis of HLA haplotypes occurring in more than one, only one, or no diabetics in GAW5 multiplex insulin-dependent diabetes mellitus (IDDM) families suggested: 1) DR3, DR4, DRw6, and DRw8 are positively associated, and DR2 is negatively associated, with IDDM; 2) DR4 haplotypes are more diabetogenic than DR3 haplotypes; some DR3 haplotypes lacking B8/B18 are more diabetogenic than those carrying B8/B18; DR3 haplotypes with DR beta TaqI bands [2,5,10/11] are more diabetogenic than those without; DR4 haplotypes that carry DQw3.2 are more diabetogenic than those that do not; some DR2 haplotypes are diabetogenic rather than protective.
142 2499498 Analysis of DR3 and DR4 transmission from DR3/X and DR4wX (X not equal to 3,4) healthy parents suggested: 3) no distortion of transmission to healthy children and 4) mothers transmit DR4 (and perhaps DR3) less often than fathers to diabetic children.
143 2499501 Analysis of the Fifth Genetic Analysis Workshop (GAW5) insulin-dependent diabetes mellitus (IDDM) data leads to the following conclusions: 1) With a maximum-likelihood affected sib pair method, there is strong evidence for linkage with HLA and no evidence for linkage with INS, Gm, or Km. 2) Susceptibility as defined by HLA genotypes is very complex.
144 2499501 Each DR allele has a unique susceptibility, and DR3 and DR4 haplotype associations for DR 3/4 genotypes are different from those for 3/X and 4/X. 3) Risk is substantially higher in sibships with an affected father compared to those with an affected mother.
145 2499506 Characteristics of a multiplex sample of families with insulin-dependent diabetes mellitus (IDDM) are studied and contrasted with similar characteristics in other, more conventionally sampled data sets.
146 2499506 "Control" haplotypes, i.e., those not transmitted to the first affected offspring, had a higher frequency of DR3 and DR4 than expected, and a rather high frequency of affected parents was observed.
147 2508996 Among 285 caucasoid families genotyped for HLA-A, B, C, DR including at least one insulin-dependent diabetic child, we have studied the effect of the DR3 and DR4 antigens inherited from the father or the mother (DR3p, DR3m, DR4p and DR4m, respectively) on the recurrence of the disease among siblings; families with affected parents being excluded, a total of 37 affected and 200 non affected siblings have been taken into consideration.
148 2508996 Among the DR3, DR4 positive siblings, the DR4p/DR3m genotype was observed at a greater frequency than the DR3p/DR4m genotype among affected, but not among unaffected siblings.
149 2508996 Among 285 caucasoid families genotyped for HLA-A, B, C, DR including at least one insulin-dependent diabetic child, we have studied the effect of the DR3 and DR4 antigens inherited from the father or the mother (DR3p, DR3m, DR4p and DR4m, respectively) on the recurrence of the disease among siblings; families with affected parents being excluded, a total of 37 affected and 200 non affected siblings have been taken into consideration.
150 2508996 Among the DR3, DR4 positive siblings, the DR4p/DR3m genotype was observed at a greater frequency than the DR3p/DR4m genotype among affected, but not among unaffected siblings.
151 2515413 A simple correlation between IDDM and residue 57 of the DQ beta chain does not hold in Oriental IDDM patients, cannot account for DR3,DR4 synergism and does not explain different modes of inheritance of DR3- and DR4-related IDDM determinants.
152 2564383 An increased risk of insulin-dependent diabetes mellitus (IDDM) among HLA-DR4,DQw8/DRw8,DQw4 heterozygotes.
153 2564383 Serological HLA typing of 92 insulin-dependent diabetes mellitus (IDDM) patients and 300 healthy controls was performed by the immunomagnetic typing technique.
154 2564383 We found an increased risk of IDDM among DR4/w8 heterozygotes, similar to that seen for DR3/4 heterozygotes.
155 2564383 Therefore, eight of nine DR4/w8 IDDM patients seemed to be DR4,DQw8/DRw8,DQw4, which, thus, may be associated with susceptibility to develop IDDM.
156 2564383 An increased risk of insulin-dependent diabetes mellitus (IDDM) among HLA-DR4,DQw8/DRw8,DQw4 heterozygotes.
157 2564383 Serological HLA typing of 92 insulin-dependent diabetes mellitus (IDDM) patients and 300 healthy controls was performed by the immunomagnetic typing technique.
158 2564383 We found an increased risk of IDDM among DR4/w8 heterozygotes, similar to that seen for DR3/4 heterozygotes.
159 2564383 Therefore, eight of nine DR4/w8 IDDM patients seemed to be DR4,DQw8/DRw8,DQw4, which, thus, may be associated with susceptibility to develop IDDM.
160 2567257 HLA and insulin gene associations with IDDM.
161 2567257 The HLA DR genotype frequencies in insulin-dependent diabetes mellitus (IDDM) patients and the frequencies of DR alleles transmitted from affected parent to affected child both indicate that the DR3-associated predisposition is more "recessive" and the DR4-associated predisposition more "dominant" in inheritance after allowing for the DR3/DR4 synergistic effect.
162 2567257 B locus distributions on patient haplotypes indicate that only subsets of both DR3 and DR4 are predisposing.
163 2567257 Heterogeneity is detected for both the DR3 and DR4 predisposing haplotypes based on DR genotypic class.
164 2567257 HLA and insulin gene associations with IDDM.
165 2567257 The HLA DR genotype frequencies in insulin-dependent diabetes mellitus (IDDM) patients and the frequencies of DR alleles transmitted from affected parent to affected child both indicate that the DR3-associated predisposition is more "recessive" and the DR4-associated predisposition more "dominant" in inheritance after allowing for the DR3/DR4 synergistic effect.
166 2567257 B locus distributions on patient haplotypes indicate that only subsets of both DR3 and DR4 are predisposing.
167 2567257 Heterogeneity is detected for both the DR3 and DR4 predisposing haplotypes based on DR genotypic class.
168 2573447 The segregation pattern of hybridizing fragments showed that: (1) for each of the DR2, DR3, and DR4 specificities, two different alleles can be identified by the DQ beta probe; (2) a 1.9 kb-Taq 1 fragment with the DR4 specificity and a 6.0 kb-Taq-1 fragment within the DR2 specificity tend to cosegregate with IDDM; (3) there was no preferential segregation of the two alleles detected within the DR3 specificity (one allele identified by a 4.7 kb-Taq 1 fragment is quite common among individuals with the DR3 specificity).
169 2617513 DQw8 (DQw3.2) on DR4 haplotypes is a susceptibility gene for development of insulin-dependent diabetes mellitus (IDDM) in Caucasoids, possibly because it encodes a non-Asp amino acid (aa) (i.e.
170 2617513 We have examined 14 Japanese IDDM patients, selected to be either DR4 or DRw9 (associated to IDDM among Japanese).
171 2617513 DQw8 (DQw3.2) on DR4 haplotypes is a susceptibility gene for development of insulin-dependent diabetes mellitus (IDDM) in Caucasoids, possibly because it encodes a non-Asp amino acid (aa) (i.e.
172 2617513 We have examined 14 Japanese IDDM patients, selected to be either DR4 or DRw9 (associated to IDDM among Japanese).
173 2622285 In diabetic patients, DR3 and DR4 were found in 85% and 63% respectively (p less than 0.001).
174 2629160 Thirty Ethiopian malnutrition-related diabetes mellitus (MRDM) patients were HLA typed and their HLA antigen frequencies were compared to those of 31 previously typed insulin-dependent diabetes mellitus (IDDM) patients and to 84 controls from the same ethnic background.
175 2629160 In comparison to IDDM that is associated with both DR3 and DR4 in this population, MRDM showed no significant differences in HLA class II antigens frequencies.
176 2645741 HLA determinations in these patients showed absence of DR3 and DR4, and presence of DR2.
177 2648900 [HLA, A, B, C, DR, C4, Bf in insulin-dependent diabetics in the Tunisian population].
178 2648900 The frequency of HLA-A-B and DR antigens as well as the Bf and C4 allotypes have been investigated in insulinodependant diabetes mellitus (IDDM) and compared to that of healthy controls in Tunisian population.
179 2648900 An increase of A30, DR3, DR4, BfF1, C4AQ0 and C4BQ0 and decrease of B40, DR2, DR5 and DR6 were found in diabetes when compared to the value observation controls.
180 2648900 The strongest association was noticed with HLA, DR3 and DR4.
181 2648900 [HLA, A, B, C, DR, C4, Bf in insulin-dependent diabetics in the Tunisian population].
182 2648900 The frequency of HLA-A-B and DR antigens as well as the Bf and C4 allotypes have been investigated in insulinodependant diabetes mellitus (IDDM) and compared to that of healthy controls in Tunisian population.
183 2648900 An increase of A30, DR3, DR4, BfF1, C4AQ0 and C4BQ0 and decrease of B40, DR2, DR5 and DR6 were found in diabetes when compared to the value observation controls.
184 2648900 The strongest association was noticed with HLA, DR3 and DR4.
185 2669340 An association of diabetes mellitus type I with HLA-B8, DR3 and DR4 was found.
186 2676279 During the last 25 years the concept of a chronic autoimmune process leading to the development of insulin dependent diabetes (IDD) has emerged.
187 2676279 The initial description of linkage disequilibrium of HLA DR3 and DR4 alleles with IDD has now progressed to the molecular level with the identification of residue 57 of the HLA DQ beta chain as crucial to the genetic predisposition to IDD.
188 2676279 However, some therapies in the animal models, not typically considered immunologic, such as protein restriction and insulin therapy, have prevented IDD.
189 2681635 All five subjects with islet cell antibodies or human leukocyte antigen DR3/DR4 with initial impaired glucose tolerance have either acquired diabetes or have abnormal glucose tolerance.
190 2681635 We conclude that in the absence of islet cell antibodies or human leukocyte antigen DR3/DR4 heterozygosity, incidental hyperglycemia or glycosuria is unlikely to be associated with progression or diabetes.
191 2681635 All five subjects with islet cell antibodies or human leukocyte antigen DR3/DR4 with initial impaired glucose tolerance have either acquired diabetes or have abnormal glucose tolerance.
192 2681635 We conclude that in the absence of islet cell antibodies or human leukocyte antigen DR3/DR4 heterozygosity, incidental hyperglycemia or glycosuria is unlikely to be associated with progression or diabetes.
193 2689194 Serological HLA studies have shown susceptibility to type 1 diabetes is linked to HLA DR3 and DR4 allels, whereas DR2 and DR5 alleles contain protective elements.
194 2698733 Studies of patients with insulin-dependent diabetes and their families have shown increased incidences of HLA markers B8, B15, DR3 and DR4.
195 2701766 Autoimmune nature of Type 1 diabetes is based on: association with genetic markers of histocompatibility mainly with the DR3 and DR4 haplotypes of the HLA system; anomalies of the humoral and cellular immunity present in a significant percentage of Type 1 diabetic patients, its association with other autoimmune diseases; the histological features of the affected pancreas and the prevention of experimental diabetes by immunosuppression.
196 2714046 The frequency of HLA A, B, and DR antigens as well as the Bf and C4 allotypes have been investigated in insulin-dependent diabetes mellitus (IDDM) and compared to that of healthy controls in the Tunisian population.
197 2714046 An increase of A30, DR3, DR4, BfF1, C4Ao, and C4Bo and decrease of B40, DR2, DR5, and DR6 were found in diabetics when compared to the value observed in controls.
198 2714046 The strongest association was noticed with HLA DR3 and DR4.
199 2714046 Heterozygotes DR3 DR4 were very frequent in diabetics: 24.2 per cent versus 3.6 per cent in controls (relative risk 7.72).
200 2714046 The frequency of HLA A, B, and DR antigens as well as the Bf and C4 allotypes have been investigated in insulin-dependent diabetes mellitus (IDDM) and compared to that of healthy controls in the Tunisian population.
201 2714046 An increase of A30, DR3, DR4, BfF1, C4Ao, and C4Bo and decrease of B40, DR2, DR5, and DR6 were found in diabetics when compared to the value observed in controls.
202 2714046 The strongest association was noticed with HLA DR3 and DR4.
203 2714046 Heterozygotes DR3 DR4 were very frequent in diabetics: 24.2 per cent versus 3.6 per cent in controls (relative risk 7.72).
204 2714046 The frequency of HLA A, B, and DR antigens as well as the Bf and C4 allotypes have been investigated in insulin-dependent diabetes mellitus (IDDM) and compared to that of healthy controls in the Tunisian population.
205 2714046 An increase of A30, DR3, DR4, BfF1, C4Ao, and C4Bo and decrease of B40, DR2, DR5, and DR6 were found in diabetics when compared to the value observed in controls.
206 2714046 The strongest association was noticed with HLA DR3 and DR4.
207 2714046 Heterozygotes DR3 DR4 were very frequent in diabetics: 24.2 per cent versus 3.6 per cent in controls (relative risk 7.72).
208 2731409 Highly significant association of HLA, A1, B8, DR3, and DR4 were found in patients with IDDM as compared to normal individuals.
209 2758954 The study of HLA histocompatibility antigens and insulin-dependent diabetes mellitus (IDDM) in non-White populations may provide a unique opportunity to more accurately define the diabetes susceptibility gene(s) located within the HLA region.
210 2758954 Several common haplotypes (B8/DR3, B15/DR4) in the non-Hispanic White group occurred less frequently in the Mexican-American group.
211 2758954 Although both DR3- and DR4-haplotype frequencies differed significantly between the two groups, the relative frequency of DR3- but not DR4-containing haplotypes was similar in both ethnic groups.
212 2758954 This adds to the evidence suggesting that different susceptibilities are provided by the haplotypes carrying the DR3 and DR4 alleles.
213 2758954 The study of HLA histocompatibility antigens and insulin-dependent diabetes mellitus (IDDM) in non-White populations may provide a unique opportunity to more accurately define the diabetes susceptibility gene(s) located within the HLA region.
214 2758954 Several common haplotypes (B8/DR3, B15/DR4) in the non-Hispanic White group occurred less frequently in the Mexican-American group.
215 2758954 Although both DR3- and DR4-haplotype frequencies differed significantly between the two groups, the relative frequency of DR3- but not DR4-containing haplotypes was similar in both ethnic groups.
216 2758954 This adds to the evidence suggesting that different susceptibilities are provided by the haplotypes carrying the DR3 and DR4 alleles.
217 2758954 The study of HLA histocompatibility antigens and insulin-dependent diabetes mellitus (IDDM) in non-White populations may provide a unique opportunity to more accurately define the diabetes susceptibility gene(s) located within the HLA region.
218 2758954 Several common haplotypes (B8/DR3, B15/DR4) in the non-Hispanic White group occurred less frequently in the Mexican-American group.
219 2758954 Although both DR3- and DR4-haplotype frequencies differed significantly between the two groups, the relative frequency of DR3- but not DR4-containing haplotypes was similar in both ethnic groups.
220 2758954 This adds to the evidence suggesting that different susceptibilities are provided by the haplotypes carrying the DR3 and DR4 alleles.
221 2784133 HLA-DR4 is associated with insulin-dependent diabetes mellitus (IDDM) in many populations.
222 2784133 The only IDDM-associated DR4 haplotypes were those carrying the IDDM-associated alleles at both loci (RR = 12.1); haplotypes with Dw4 or 10 but not DQ3.2, or vice versa, had a RR less than 1.
223 2801776 Autoimmune thyroid phenomena are not evidence for human lymphocyte antigen-genetic heterogeneity in insulin-dependent diabetes.
224 2801776 It is well established that there is genetic heterogeneity between a human lymphocyte antigen (HLA)-DR3-associated allele and an HLA-DR4-associated allele in insulin-dependent diabetes mellitus (IDDM).
225 2801776 These results suggest that thyroid autoimmunity in IDDM is part of the IDDM "syndrome" and is associated with DR3 and DR4 to the same extent that IDDM without thyroid disease is associated with these two antigens.
226 2801776 Thus, although genetic studies are consistent with the heterogeneity between DR3 and DR4 in IDDM, there is no HLA-thyroid disease association to support this heterogeneity.
227 2801776 Autoimmune thyroid phenomena are not evidence for human lymphocyte antigen-genetic heterogeneity in insulin-dependent diabetes.
228 2801776 It is well established that there is genetic heterogeneity between a human lymphocyte antigen (HLA)-DR3-associated allele and an HLA-DR4-associated allele in insulin-dependent diabetes mellitus (IDDM).
229 2801776 These results suggest that thyroid autoimmunity in IDDM is part of the IDDM "syndrome" and is associated with DR3 and DR4 to the same extent that IDDM without thyroid disease is associated with these two antigens.
230 2801776 Thus, although genetic studies are consistent with the heterogeneity between DR3 and DR4 in IDDM, there is no HLA-thyroid disease association to support this heterogeneity.
231 2863632 To evaluate the role of Coxsackie B viruses in the pathogenesis of insulin-dependent (juvenile-onset, type 1) diabetes mellitus (IDDM), attempts were made to correlate virus-specific IgM responses with HLA genes, autoimmune responses, and C-peptide secretion.
232 2863632 HLA DR3, DR4, or both were present in 73 of 90 (81%) diabetic patients; 22 of 23 (96%) with Coxsackie-B-virus-specific IgM had at least one of these HLA types, compared with 51 of 67 (76%) without virus-specific IgM.
233 2881884 In contrast, the DQ3.DR4.b DQ beta haplotype was significantly decreased in IDD-associated DR4 chromosomes (P = 0.04).
234 2901399 HLA-DQ system and insulin-dependent diabetes mellitus in Japanese: does it contribute to the development of IDDM as it does in Caucasians?
235 2901399 Fifty-six unrelated Japanese patients with insulin-dependent diabetes mellitus (IDDM) were HLA-typed, and restriction fragment length polymorphism (RFLP) analysis was performed after enzyme digestion with Bam HI and Taq I by using both DR and DQ probes.
236 2901399 As previously reported, increased frequencies of Bw54, Cw1, DR4, and DRw53, which are in strong linkage disequilibrium in the Japanese population and make the characteristic Japanese haplotype, were confirmed.
237 2951844 Twelve insulin-dependent diabetes mellitus (IDDM) patients and healthy controls, who all carried the serologically defined DR3 and DR4 antigens, were compared with respect to other HLA polymorphisms.
238 2951844 Furthermore, when the distribution of all DQ beta-specific fragments which demonstrated polymorphism in our material was taken into account, nine of the 12 DR3, 4 IDDM patients demonstrated a similar DQ beta polymorphism compared with only two out of the 12 DR3, 4 controls (P = 0.006; corrected P = 0.037).
239 2952412 Fifty-six had islet cell antibodies and/or were heterozygous for HLA DR3 and DR4 (Group A) whereas 44 had neither of these markers (Group B).
240 2952412 Islet cell antibodies and/or DR3, DR4 heterozygosity were most common in the 70 patients diagnosed below the age of 40 years but were also found in older patients.
241 2952412 Fifty-six had islet cell antibodies and/or were heterozygous for HLA DR3 and DR4 (Group A) whereas 44 had neither of these markers (Group B).
242 2952412 Islet cell antibodies and/or DR3, DR4 heterozygosity were most common in the 70 patients diagnosed below the age of 40 years but were also found in older patients.
243 2979618 DR3 and DR4 have been the most positive and DR2 the most negative.
244 2979618 In 952 Caucasian proband patients reported here, only 57 or 6% had no DR3 or DR4 alleles.
245 2979618 When these 57 patients were compared to 249 Caucasian controls similarly lacking DR3 and DR4 antigens, there were excesses of DR1 (P = 0.13) and DRW8 (P = 0.01) and deficiencies of DR2 (P = 0.03) and DR5 (P = 0.03) in the patient group.
246 2979618 Only four DR-homozygous patients involving alleles other than DR3 and DR4 were found by genotyping, and all were DR1 homozygotes.
247 2979618 We conclude that DR1 is an additional risk DR allele for IDD to that of DR3 and DR4, and DR5 an additional protective DR allele to that of DR2.
248 2979618 DR3 and DR4 have been the most positive and DR2 the most negative.
249 2979618 In 952 Caucasian proband patients reported here, only 57 or 6% had no DR3 or DR4 alleles.
250 2979618 When these 57 patients were compared to 249 Caucasian controls similarly lacking DR3 and DR4 antigens, there were excesses of DR1 (P = 0.13) and DRW8 (P = 0.01) and deficiencies of DR2 (P = 0.03) and DR5 (P = 0.03) in the patient group.
251 2979618 Only four DR-homozygous patients involving alleles other than DR3 and DR4 were found by genotyping, and all were DR1 homozygotes.
252 2979618 We conclude that DR1 is an additional risk DR allele for IDD to that of DR3 and DR4, and DR5 an additional protective DR allele to that of DR2.
253 2979618 DR3 and DR4 have been the most positive and DR2 the most negative.
254 2979618 In 952 Caucasian proband patients reported here, only 57 or 6% had no DR3 or DR4 alleles.
255 2979618 When these 57 patients were compared to 249 Caucasian controls similarly lacking DR3 and DR4 antigens, there were excesses of DR1 (P = 0.13) and DRW8 (P = 0.01) and deficiencies of DR2 (P = 0.03) and DR5 (P = 0.03) in the patient group.
256 2979618 Only four DR-homozygous patients involving alleles other than DR3 and DR4 were found by genotyping, and all were DR1 homozygotes.
257 2979618 We conclude that DR1 is an additional risk DR allele for IDD to that of DR3 and DR4, and DR5 an additional protective DR allele to that of DR2.
258 2979618 DR3 and DR4 have been the most positive and DR2 the most negative.
259 2979618 In 952 Caucasian proband patients reported here, only 57 or 6% had no DR3 or DR4 alleles.
260 2979618 When these 57 patients were compared to 249 Caucasian controls similarly lacking DR3 and DR4 antigens, there were excesses of DR1 (P = 0.13) and DRW8 (P = 0.01) and deficiencies of DR2 (P = 0.03) and DR5 (P = 0.03) in the patient group.
261 2979618 Only four DR-homozygous patients involving alleles other than DR3 and DR4 were found by genotyping, and all were DR1 homozygotes.
262 2979618 We conclude that DR1 is an additional risk DR allele for IDD to that of DR3 and DR4, and DR5 an additional protective DR allele to that of DR2.
263 2979618 DR3 and DR4 have been the most positive and DR2 the most negative.
264 2979618 In 952 Caucasian proband patients reported here, only 57 or 6% had no DR3 or DR4 alleles.
265 2979618 When these 57 patients were compared to 249 Caucasian controls similarly lacking DR3 and DR4 antigens, there were excesses of DR1 (P = 0.13) and DRW8 (P = 0.01) and deficiencies of DR2 (P = 0.03) and DR5 (P = 0.03) in the patient group.
266 2979618 Only four DR-homozygous patients involving alleles other than DR3 and DR4 were found by genotyping, and all were DR1 homozygotes.
267 2979618 We conclude that DR1 is an additional risk DR allele for IDD to that of DR3 and DR4, and DR5 an additional protective DR allele to that of DR2.
268 2987920 (iii) A DR Taq I 14.5-kilobase-pair fragment was found to be strongly associated with DQR4, mainly in DR3/DR4 heterozygous patients (P = 5 X 10(-4).
269 2994251 Furthermore, for the mumps antigen the DR3- and DR4-determinants which are associated with Type 1 diabetes, seemed to have a different regulatory function on the T lymphocyte response in that an increased frequency of low responders was found among DR3 positive individuals and an increased frequency of high responders among DR4 positives.
270 2995183 The results suggest that elements on the DR3 and DR4 molecules may control T-lymphocyte responses to mumps and Coxsackie B4 viruses.
271 2999795 This restriction fragment pattern was found for several haplotypes associated with the DQw3 specificity, including some haplotypes positive for the HLA-DR specificities DR4, DR5, DRw8, and DRw12.
272 3014039 More than 90% of DR4+ IDDM patients express one of these alleles, DQ3.2; restriction enzyme mapping indicates that the presence of this allele also accounts for the genomic fragment patterns previously reported in IDDM.
273 3014346 Certain class II determinants of the human histocompatibility locus antigens (HLA) have been implicated in the aetiology of several autoimmune diseases, including rheumatoid arthritis (RA) and insulin-dependent diabetes mellitus (IDDM).
274 3014346 When the HLA-DR system was defined, RA patients were found to have an increased frequency of DR4 and IDDM patients an increased incidence of both DR4 and DR3 compared with controls.
275 3057885 From 11 studies, a total of 1,792 Caucasian probands with insulin-dependent diabetes mellitus (IDDM) are analyzed.
276 3057885 Removal of DR3 and DR4 reveals an overall protective effect of DR2, predisposing effects of DR1 and DRw8, and a slight protective effect of DR5 and a predisposing effect of DRw6.
277 3057885 The non-DR3, non-DR4 antigens are not independently associated with DR3 and DR4; the largest effect is a deficiency of DR2, followed by excesses of DR1, DRw8, and DRw6, in DR4 individuals, as compared with DR3 individuals.
278 3057885 HLA-B locus distributions on patient haplotypes indicate that only subsets of both DR3 and DR4 are predisposing.
279 3057885 At a minimum, the distinguishing features of the DR3-associated and DR4-associated predisposition remain to be identified at the molecular level.
280 3057885 Risk estimates subdivided by the DR type of the proband are also calculated, the highest being 19.2% for sibs sharing two haplotypes with a DR3/DR4 proband.
281 3057885 From 11 studies, a total of 1,792 Caucasian probands with insulin-dependent diabetes mellitus (IDDM) are analyzed.
282 3057885 Removal of DR3 and DR4 reveals an overall protective effect of DR2, predisposing effects of DR1 and DRw8, and a slight protective effect of DR5 and a predisposing effect of DRw6.
283 3057885 The non-DR3, non-DR4 antigens are not independently associated with DR3 and DR4; the largest effect is a deficiency of DR2, followed by excesses of DR1, DRw8, and DRw6, in DR4 individuals, as compared with DR3 individuals.
284 3057885 HLA-B locus distributions on patient haplotypes indicate that only subsets of both DR3 and DR4 are predisposing.
285 3057885 At a minimum, the distinguishing features of the DR3-associated and DR4-associated predisposition remain to be identified at the molecular level.
286 3057885 Risk estimates subdivided by the DR type of the proband are also calculated, the highest being 19.2% for sibs sharing two haplotypes with a DR3/DR4 proband.
287 3057885 From 11 studies, a total of 1,792 Caucasian probands with insulin-dependent diabetes mellitus (IDDM) are analyzed.
288 3057885 Removal of DR3 and DR4 reveals an overall protective effect of DR2, predisposing effects of DR1 and DRw8, and a slight protective effect of DR5 and a predisposing effect of DRw6.
289 3057885 The non-DR3, non-DR4 antigens are not independently associated with DR3 and DR4; the largest effect is a deficiency of DR2, followed by excesses of DR1, DRw8, and DRw6, in DR4 individuals, as compared with DR3 individuals.
290 3057885 HLA-B locus distributions on patient haplotypes indicate that only subsets of both DR3 and DR4 are predisposing.
291 3057885 At a minimum, the distinguishing features of the DR3-associated and DR4-associated predisposition remain to be identified at the molecular level.
292 3057885 Risk estimates subdivided by the DR type of the proband are also calculated, the highest being 19.2% for sibs sharing two haplotypes with a DR3/DR4 proband.
293 3057885 From 11 studies, a total of 1,792 Caucasian probands with insulin-dependent diabetes mellitus (IDDM) are analyzed.
294 3057885 Removal of DR3 and DR4 reveals an overall protective effect of DR2, predisposing effects of DR1 and DRw8, and a slight protective effect of DR5 and a predisposing effect of DRw6.
295 3057885 The non-DR3, non-DR4 antigens are not independently associated with DR3 and DR4; the largest effect is a deficiency of DR2, followed by excesses of DR1, DRw8, and DRw6, in DR4 individuals, as compared with DR3 individuals.
296 3057885 HLA-B locus distributions on patient haplotypes indicate that only subsets of both DR3 and DR4 are predisposing.
297 3057885 At a minimum, the distinguishing features of the DR3-associated and DR4-associated predisposition remain to be identified at the molecular level.
298 3057885 Risk estimates subdivided by the DR type of the proband are also calculated, the highest being 19.2% for sibs sharing two haplotypes with a DR3/DR4 proband.
299 3057885 From 11 studies, a total of 1,792 Caucasian probands with insulin-dependent diabetes mellitus (IDDM) are analyzed.
300 3057885 Removal of DR3 and DR4 reveals an overall protective effect of DR2, predisposing effects of DR1 and DRw8, and a slight protective effect of DR5 and a predisposing effect of DRw6.
301 3057885 The non-DR3, non-DR4 antigens are not independently associated with DR3 and DR4; the largest effect is a deficiency of DR2, followed by excesses of DR1, DRw8, and DRw6, in DR4 individuals, as compared with DR3 individuals.
302 3057885 HLA-B locus distributions on patient haplotypes indicate that only subsets of both DR3 and DR4 are predisposing.
303 3057885 At a minimum, the distinguishing features of the DR3-associated and DR4-associated predisposition remain to be identified at the molecular level.
304 3057885 Risk estimates subdivided by the DR type of the proband are also calculated, the highest being 19.2% for sibs sharing two haplotypes with a DR3/DR4 proband.
305 3071483 Analysis of HLA haplotypes within families illustrated the high frequency of DR3 and DR4 alleles with preferential transmission from parent to both affected and unaffected offspring.
306 3075129 These results support the heterogeneity of the autoantibodies: ICA are related closely to diabetes, decline in frequency with the duration of the disease and show association with DR3 or DR4 and the number of HLA haplotypes shared with the proband; EPA are sex related, independent of the duration of diabetes, non-HLA linked, and clustered in families with parent-offspring overtransmission, reflecting an overlapping autoimmune background.
307 3082114 Moreover, a strong genetic association with HL-A DR3 and DR4 identifies a genetic background compatible with autoimmune phenomena.
308 3125628 Thirty-one Ethiopian insulin-dependent (or type I) diabetes mellitus (IDDM) patients and thirty-three healthy controls from the same ethnic background were typed for HLA-A, B, C, DR and DQ specificities.
309 3125628 The frequencies of both DR3 and DR4 were significantly increased among IDDM patients (resp. p = 0.02, p = 0.01), confirming results in other populations.
310 3125628 Although this latter difference does not retain statistical significance after correction for the number of comparisons made, these findings may support previous results suggesting the existence of IDDM susceptibility genes associated with DR3 and DR4 and of IDDM resistance genes associated with DQ antigens.
311 3125628 Thirty-one Ethiopian insulin-dependent (or type I) diabetes mellitus (IDDM) patients and thirty-three healthy controls from the same ethnic background were typed for HLA-A, B, C, DR and DQ specificities.
312 3125628 The frequencies of both DR3 and DR4 were significantly increased among IDDM patients (resp. p = 0.02, p = 0.01), confirming results in other populations.
313 3125628 Although this latter difference does not retain statistical significance after correction for the number of comparisons made, these findings may support previous results suggesting the existence of IDDM susceptibility genes associated with DR3 and DR4 and of IDDM resistance genes associated with DQ antigens.
314 3139557 In the genetically homogeneous Danish population, 27 HLA-DR3,4 heterozygous patients with insulin-dependent diabetes mellitus (IDDM) and 19 DR3,4 heterozygous controls without family history of IDDM were investigated for HLA-region markers and Gm and Km immunoglobulin allotypes.
315 3139557 Previously reported family studies suggest that these alleles are part of the following haplotype: B15, BFS, C4A3, C4B3, DR4, Dw4, DQw8, and these factors were found together in ten of the patients versus one of the controls (P = 0.01).
316 3139557 In addition to the susceptibility factor DQw8, the study suggests the existence of susceptibility genes for IDDM near the complement C4 genes on DR4-carrying haplotypes.
317 3139557 In the genetically homogeneous Danish population, 27 HLA-DR3,4 heterozygous patients with insulin-dependent diabetes mellitus (IDDM) and 19 DR3,4 heterozygous controls without family history of IDDM were investigated for HLA-region markers and Gm and Km immunoglobulin allotypes.
318 3139557 Previously reported family studies suggest that these alleles are part of the following haplotype: B15, BFS, C4A3, C4B3, DR4, Dw4, DQw8, and these factors were found together in ten of the patients versus one of the controls (P = 0.01).
319 3139557 In addition to the susceptibility factor DQw8, the study suggests the existence of susceptibility genes for IDDM near the complement C4 genes on DR4-carrying haplotypes.
320 3149191 Associations of insulin dependent diabetes mellitus exist with the HLA-DR antigens DR3 and DR4 in both British Caucasoid and Dravidian subjects.
321 3163697 Compared with the normal subjects, HLA-A28 was more frequent in the patients with hypoparathyroidism (31%; P less than 0.001, corrected P less than 0.04), adrenocortical failure (27%; P less than 0.01), insulin-dependent diabetes mellitus (IDDM; 66%; P less than 0.01), keratopathy (53%; P less than 0.001, corrected P less than 0.04), and alopecia (40%; P less than 0.001, corrected P less than 0.04), but not in the patients with ovarian failure (9%; P = NS).
322 3163697 No association was found with any single DR antigen, but of 4 DR-typed IDDM patients, 3 were DR3 or DR4 positive (P = NS).
323 3217930 Two complotypes, BfSC4A3B3 and SC4A0B1, were significantly more common (P less than 0.05) in the diabetic haplotypes, and these were in most cases found in haplotypic combinations with HLA-B15,Dw4,DR4 and HLA-B8,Dw3,DR3 genes, respectively.
324 3217930 "B15,BfS,C4A3B3,Dw4,DR4" and "B8,Bfs,C4A0B1,Dw3,DR3" are inherited as haplotypes.
325 3217930 Two complotypes, BfSC4A3B3 and SC4A0B1, were significantly more common (P less than 0.05) in the diabetic haplotypes, and these were in most cases found in haplotypic combinations with HLA-B15,Dw4,DR4 and HLA-B8,Dw3,DR3 genes, respectively.
326 3217930 "B15,BfS,C4A3B3,Dw4,DR4" and "B8,Bfs,C4A0B1,Dw3,DR3" are inherited as haplotypes.
327 3238312 In order to define genetic, immunological and metabolic risk factors and markers associated with diabetic neuropathy (DN) 47 insulin-dependent diabetic patients with neuropathy were compared to 30 age-matched insulin-dependent diabetes mellitus (IDDM) patients without neuropathy.
328 3238312 The frequency of HLA-antigens DR3, DR4, DR3/DR4, B8, and B15 were increased and those of DR2 and B7 decreased in the diabetic patients.
329 3238312 However, patients who were HLA-DR3/DR4 heterozygotes and had diabetic neuropathy responded to insulin antigens more often by proliferation than DR3/DR4 positive patients without diabetic neuropathy.
330 3238312 Patients with DR3/DR4 heterozygocity and failing to respond to insulin antigens by proliferation seem to be less prone to develop diabetic neuropathy.
331 3238312 In order to define genetic, immunological and metabolic risk factors and markers associated with diabetic neuropathy (DN) 47 insulin-dependent diabetic patients with neuropathy were compared to 30 age-matched insulin-dependent diabetes mellitus (IDDM) patients without neuropathy.
332 3238312 The frequency of HLA-antigens DR3, DR4, DR3/DR4, B8, and B15 were increased and those of DR2 and B7 decreased in the diabetic patients.
333 3238312 However, patients who were HLA-DR3/DR4 heterozygotes and had diabetic neuropathy responded to insulin antigens more often by proliferation than DR3/DR4 positive patients without diabetic neuropathy.
334 3238312 Patients with DR3/DR4 heterozygocity and failing to respond to insulin antigens by proliferation seem to be less prone to develop diabetic neuropathy.
335 3238312 In order to define genetic, immunological and metabolic risk factors and markers associated with diabetic neuropathy (DN) 47 insulin-dependent diabetic patients with neuropathy were compared to 30 age-matched insulin-dependent diabetes mellitus (IDDM) patients without neuropathy.
336 3238312 The frequency of HLA-antigens DR3, DR4, DR3/DR4, B8, and B15 were increased and those of DR2 and B7 decreased in the diabetic patients.
337 3238312 However, patients who were HLA-DR3/DR4 heterozygotes and had diabetic neuropathy responded to insulin antigens more often by proliferation than DR3/DR4 positive patients without diabetic neuropathy.
338 3238312 Patients with DR3/DR4 heterozygocity and failing to respond to insulin antigens by proliferation seem to be less prone to develop diabetic neuropathy.
339 3264044 A hypothesis about the evolution of insulin-dependent diabetes mellitus (IDDM)-susceptibility alleles is proposed.
340 3264044 IDDM is known to be associated with two HLA-DR alleles, DR3 and DR4.
341 3264044 However, in general, DR4 is associated with IDDM only in populations with white ancestry with high rates of IDDM.
342 3264044 The frequency of IDDM in American blacks relative to that in American whites (20% to 30%) approximates the frequency of the American black gene pool that is white-derived (also 20% to 30%), and DR4 is associated with IDDM in American blacks but not in African blacks.
343 3264044 A hypothesis about the evolution of insulin-dependent diabetes mellitus (IDDM)-susceptibility alleles is proposed.
344 3264044 IDDM is known to be associated with two HLA-DR alleles, DR3 and DR4.
345 3264044 However, in general, DR4 is associated with IDDM only in populations with white ancestry with high rates of IDDM.
346 3264044 The frequency of IDDM in American blacks relative to that in American whites (20% to 30%) approximates the frequency of the American black gene pool that is white-derived (also 20% to 30%), and DR4 is associated with IDDM in American blacks but not in African blacks.
347 3264044 A hypothesis about the evolution of insulin-dependent diabetes mellitus (IDDM)-susceptibility alleles is proposed.
348 3264044 IDDM is known to be associated with two HLA-DR alleles, DR3 and DR4.
349 3264044 However, in general, DR4 is associated with IDDM only in populations with white ancestry with high rates of IDDM.
350 3264044 The frequency of IDDM in American blacks relative to that in American whites (20% to 30%) approximates the frequency of the American black gene pool that is white-derived (also 20% to 30%), and DR4 is associated with IDDM in American blacks but not in African blacks.
351 3275559 Islet cell antibodies (ICAs), thyrogastric antibodies, and HLA-DR antigens were determined in 204 patients with type II (non-insulin-dependent) diabetes controlled with diet and/or oral hypoglycemic agents (NIR) and in 108 age-matched patients who required insulin to control their hyperglycemia (IR). beta-Cell function measured as C-peptide response to glucagon was evaluated in relation to the presence of ICAs and HLA-DR antigens.
352 3275559 Neither the presence of ICA alone nor DR3/DR4 alone was associated with a significant impairment of beta-cell function.
353 3275559 However, when both ICA and DR3/DR4 were present in a diabetic individual, beta-cell function was markedly impaired (P less than .001), suggesting that both genetic and autoimmune factors are necessary to facilitate the process leading to beta-cell destruction of the patients.
354 3275559 Islet cell antibodies (ICAs), thyrogastric antibodies, and HLA-DR antigens were determined in 204 patients with type II (non-insulin-dependent) diabetes controlled with diet and/or oral hypoglycemic agents (NIR) and in 108 age-matched patients who required insulin to control their hyperglycemia (IR). beta-Cell function measured as C-peptide response to glucagon was evaluated in relation to the presence of ICAs and HLA-DR antigens.
355 3275559 Neither the presence of ICA alone nor DR3/DR4 alone was associated with a significant impairment of beta-cell function.
356 3275559 However, when both ICA and DR3/DR4 were present in a diabetic individual, beta-cell function was markedly impaired (P less than .001), suggesting that both genetic and autoimmune factors are necessary to facilitate the process leading to beta-cell destruction of the patients.
357 3291550 The Wolfram, or DIDMOAD, syndrome is a rare congenital disease that is associated with diabetes insipidus, insulin dependent diabetes mellitus of an early onset, bilateral optic atrophy and deafness.
358 3291550 On the basis of some of the clinical features it was also possible to further distinguish between the DIDMOAD syndrome and the classical insulin dependent diabetes mellitus.
359 3291550 The differences encountered between classical and DIDMOAD insulin dependent diabetes mellitus--the presence/absence of HLA linkage, HLA-DR2, -DR3 and -DR4 associations, islet cell or antinuclear antibodies, the tendency to ketosis and diabetic retinopathy--indicate that their etiopathogenies are triggered by distinct mechanisms.
360 3301240 Genetic studies indicate that the IDDM susceptibility genes in the HLA region are closely linked to the DR3 and DR4 specificities; however, these specificities do not define the actual susceptibility genes.
361 3301240 For example, the DX alpha, 2.1-kb Taql polymorphism shows a stronger correlation with IDDM than DR3.
362 3307406 Insulin-dependent diabetes mellitus (IDDM) is caused by the destruction of the beta cells of the pancreas.
363 3307406 The risk is greatest for those with both DR3 and DR4.
364 3315368 Diminished complications in a non DR3 DR4 family with insulin-dependent diabetes.
365 3326380 The analysis of variance of urinary C-peptide values on the basis of the presence or absence of DR3 and DR4 antigens revealed that the DR3-positive patients had reduced excretion (15.2 +/- 9.2 SD micrograms/24h) with respect to the others (22.7 +/- 15.5 SD micrograms/24h) (F = 6.35; p less than 0.05).
366 3365534 HLA typing revealed the presence of HLA A2, A9, B8, B27, DR3 and DR4 antigens.
367 3372263 To examine the nature of HLA-linked genetic susceptibility to insulin-dependent diabetes mellitus (IDDM), we compared HLA class II gene sequences from IDDM patients and control individuals.
368 3372263 These libraries represent the HLA haplotypes (DR3, DR4) most frequently associated with IDDM, as well as one haplotype found less often.
369 3400091 From the study of HLA, A, B, C, DR, Bf and C4A, C4B alleles in 287 insulin-dependent diabetes mellitus patients and 108 controls, comparisons were made between 424 diabetic and 216 normal extended haplotypes.
370 3400091 In the "cis" situation (haplotype), the highest relative risks (RR) for IDDM were borne by multiloci allelic associations, mainly DR/complement alleles, rather than by DR3 or DR4 considered alone.
371 3400091 Susceptibility was strongly associated with two extended haplotypes (Aw30, Cw5, B18, C4BQ0, C4A3, BfF1, DR3 and A2, Cw3, B15, C4Bx, C4A3, BfS, DR4) or their smaller segments.
372 3400091 In the "trans" situation (opposite haplotype) the large excess of DR3/DR4 heterozygotes was not the only distortion observed.
373 3400091 Homozygotes for DR3 or DR4 were not increased, and other homozygotes were decreased compared to controls.
374 3400091 From the study of HLA, A, B, C, DR, Bf and C4A, C4B alleles in 287 insulin-dependent diabetes mellitus patients and 108 controls, comparisons were made between 424 diabetic and 216 normal extended haplotypes.
375 3400091 In the "cis" situation (haplotype), the highest relative risks (RR) for IDDM were borne by multiloci allelic associations, mainly DR/complement alleles, rather than by DR3 or DR4 considered alone.
376 3400091 Susceptibility was strongly associated with two extended haplotypes (Aw30, Cw5, B18, C4BQ0, C4A3, BfF1, DR3 and A2, Cw3, B15, C4Bx, C4A3, BfS, DR4) or their smaller segments.
377 3400091 In the "trans" situation (opposite haplotype) the large excess of DR3/DR4 heterozygotes was not the only distortion observed.
378 3400091 Homozygotes for DR3 or DR4 were not increased, and other homozygotes were decreased compared to controls.
379 3400091 From the study of HLA, A, B, C, DR, Bf and C4A, C4B alleles in 287 insulin-dependent diabetes mellitus patients and 108 controls, comparisons were made between 424 diabetic and 216 normal extended haplotypes.
380 3400091 In the "cis" situation (haplotype), the highest relative risks (RR) for IDDM were borne by multiloci allelic associations, mainly DR/complement alleles, rather than by DR3 or DR4 considered alone.
381 3400091 Susceptibility was strongly associated with two extended haplotypes (Aw30, Cw5, B18, C4BQ0, C4A3, BfF1, DR3 and A2, Cw3, B15, C4Bx, C4A3, BfS, DR4) or their smaller segments.
382 3400091 In the "trans" situation (opposite haplotype) the large excess of DR3/DR4 heterozygotes was not the only distortion observed.
383 3400091 Homozygotes for DR3 or DR4 were not increased, and other homozygotes were decreased compared to controls.
384 3400091 From the study of HLA, A, B, C, DR, Bf and C4A, C4B alleles in 287 insulin-dependent diabetes mellitus patients and 108 controls, comparisons were made between 424 diabetic and 216 normal extended haplotypes.
385 3400091 In the "cis" situation (haplotype), the highest relative risks (RR) for IDDM were borne by multiloci allelic associations, mainly DR/complement alleles, rather than by DR3 or DR4 considered alone.
386 3400091 Susceptibility was strongly associated with two extended haplotypes (Aw30, Cw5, B18, C4BQ0, C4A3, BfF1, DR3 and A2, Cw3, B15, C4Bx, C4A3, BfS, DR4) or their smaller segments.
387 3400091 In the "trans" situation (opposite haplotype) the large excess of DR3/DR4 heterozygotes was not the only distortion observed.
388 3400091 Homozygotes for DR3 or DR4 were not increased, and other homozygotes were decreased compared to controls.
389 3456943 Because the strong HLA associations with type I diabetes in American Blacks are the same as in Caucasians (i.e., increased DR3 and DR4 and decreased DR2), the genetic contribution (i.e., the lack of an association with DR4) to susceptibility to type I diabetes in most Nigerian Blacks may be different from that in most Caucasians and American Blacks.
390 3462067 The data obtained suggest that the association with DR3 and DR4 is secondary to that with DQ specificities in linkage disequilibrium with DR3 and DR4.
391 3471665 DR4 and DR3 are in strongest linkage disequilibrium with IDDM susceptibility genes, and DR1 demonstrates a lesser degree of positive disequilibrium.
392 3471665 DR3/DR4 heterozygotes have the highest risk.
393 3471665 The DR1 increase occurs almost exclusively in DR4/DR1 heterozygotes, suggesting that DR1 may be in disequilibrium with the same susceptibility gene as DR3.
394 3471665 GLO-2 is increased in diabetic haplotypes carrying DR4, DR3 or DR1.
395 3471665 DR4 and DR3 are in strongest linkage disequilibrium with IDDM susceptibility genes, and DR1 demonstrates a lesser degree of positive disequilibrium.
396 3471665 DR3/DR4 heterozygotes have the highest risk.
397 3471665 The DR1 increase occurs almost exclusively in DR4/DR1 heterozygotes, suggesting that DR1 may be in disequilibrium with the same susceptibility gene as DR3.
398 3471665 GLO-2 is increased in diabetic haplotypes carrying DR4, DR3 or DR1.
399 3471665 DR4 and DR3 are in strongest linkage disequilibrium with IDDM susceptibility genes, and DR1 demonstrates a lesser degree of positive disequilibrium.
400 3471665 DR3/DR4 heterozygotes have the highest risk.
401 3471665 The DR1 increase occurs almost exclusively in DR4/DR1 heterozygotes, suggesting that DR1 may be in disequilibrium with the same susceptibility gene as DR3.
402 3471665 GLO-2 is increased in diabetic haplotypes carrying DR4, DR3 or DR1.
403 3471665 DR4 and DR3 are in strongest linkage disequilibrium with IDDM susceptibility genes, and DR1 demonstrates a lesser degree of positive disequilibrium.
404 3471665 DR3/DR4 heterozygotes have the highest risk.
405 3471665 The DR1 increase occurs almost exclusively in DR4/DR1 heterozygotes, suggesting that DR1 may be in disequilibrium with the same susceptibility gene as DR3.
406 3471665 GLO-2 is increased in diabetic haplotypes carrying DR4, DR3 or DR1.
407 3484749 The inherited susceptibility to autoimmune Addison's disease was found to be strongly associated with human leukocyte antigens (HLA)-DR3 and DR4 alleles.
408 3484749 These HLA-DR frequencies in patients with Addison's disease were similar to those for 723 patients with insulin-dependent diabetes (IDD).
409 3484749 Adrenocortical autoantibodies in 23 patients with IDD who did not have Addison's disease were equally frequent among those with DR4 and DR3 alleles.
410 3484749 The inherited susceptibility to autoimmune Addison's disease was found to be strongly associated with human leukocyte antigens (HLA)-DR3 and DR4 alleles.
411 3484749 These HLA-DR frequencies in patients with Addison's disease were similar to those for 723 patients with insulin-dependent diabetes (IDD).
412 3484749 Adrenocortical autoantibodies in 23 patients with IDD who did not have Addison's disease were equally frequent among those with DR4 and DR3 alleles.
413 3485759 In this series, however, HLA-DR3/DR4 heterozygotes were apparently at no greater risk for type I diabetes than DR3 or DR4 homozygotes.
414 3485759 The relative risk conferred by DR3/DR4 heterozygotes (6.48) was less than that for DR3 homozygosity (2.8), suggesting a recessive major histocompatibility complex-related susceptibility to type I diabetes.
415 3485759 In this series, however, HLA-DR3/DR4 heterozygotes were apparently at no greater risk for type I diabetes than DR3 or DR4 homozygotes.
416 3485759 The relative risk conferred by DR3/DR4 heterozygotes (6.48) was less than that for DR3 homozygosity (2.8), suggesting a recessive major histocompatibility complex-related susceptibility to type I diabetes.
417 3488933 There were no significant differences in the gene frequencies of the insulin-dependent diabetes mellitus (IDDM)-associated alleles, DR3 and DR4, and whereas the DR3/4 heterozygotes were as frequent among simplex probands as among the first affected of multiplex sibships, subsequently affected sibs displayed lower frequencies of this genotype in this as well as in previously reported samples, indicating that the excessive risk associated with DR3/4 heterozygosity depends on the order of affection and thus on environmental factors.
418 3489237 Insulin-dependent diabetes mellitus (IDDM) susceptibility determinants are known to be associated with both HLA-DR3 and -DR4.
419 3489237 The proportion of nondiabetic parents who transmitted DR4 to diabetic offspring (22%) was not significantly different from the gene frequency of DR4 in the nondiabetic population (16%), but it was significantly lower (P less than 0.05) than the gene frequency in the overall IDDM population.
420 3489237 These proportions suggest that inheritance of the DR4-associated IDDM susceptibility determinant is not recessive, because in recessive inheritance expression of a trait depends on each parent contributing a susceptibility determinant.
421 3489237 The transmission of predominantly DR4 from affected parents to affected offspring suggests that susceptibility to IDDM is inherited primarily via a single dose of a potent determinant associated with DR4, as in dominant inheritance.
422 3489237 Numerous population data indicate that the DR3DR4 genotype carries a higher relative risk for IDDM than any other genotype, which suggests synergism between the DR3- and DR4-associated determinants.
423 3489237 Insulin-dependent diabetes mellitus (IDDM) susceptibility determinants are known to be associated with both HLA-DR3 and -DR4.
424 3489237 The proportion of nondiabetic parents who transmitted DR4 to diabetic offspring (22%) was not significantly different from the gene frequency of DR4 in the nondiabetic population (16%), but it was significantly lower (P less than 0.05) than the gene frequency in the overall IDDM population.
425 3489237 These proportions suggest that inheritance of the DR4-associated IDDM susceptibility determinant is not recessive, because in recessive inheritance expression of a trait depends on each parent contributing a susceptibility determinant.
426 3489237 The transmission of predominantly DR4 from affected parents to affected offspring suggests that susceptibility to IDDM is inherited primarily via a single dose of a potent determinant associated with DR4, as in dominant inheritance.
427 3489237 Numerous population data indicate that the DR3DR4 genotype carries a higher relative risk for IDDM than any other genotype, which suggests synergism between the DR3- and DR4-associated determinants.
428 3489237 Insulin-dependent diabetes mellitus (IDDM) susceptibility determinants are known to be associated with both HLA-DR3 and -DR4.
429 3489237 The proportion of nondiabetic parents who transmitted DR4 to diabetic offspring (22%) was not significantly different from the gene frequency of DR4 in the nondiabetic population (16%), but it was significantly lower (P less than 0.05) than the gene frequency in the overall IDDM population.
430 3489237 These proportions suggest that inheritance of the DR4-associated IDDM susceptibility determinant is not recessive, because in recessive inheritance expression of a trait depends on each parent contributing a susceptibility determinant.
431 3489237 The transmission of predominantly DR4 from affected parents to affected offspring suggests that susceptibility to IDDM is inherited primarily via a single dose of a potent determinant associated with DR4, as in dominant inheritance.
432 3489237 Numerous population data indicate that the DR3DR4 genotype carries a higher relative risk for IDDM than any other genotype, which suggests synergism between the DR3- and DR4-associated determinants.
433 3489237 Insulin-dependent diabetes mellitus (IDDM) susceptibility determinants are known to be associated with both HLA-DR3 and -DR4.
434 3489237 The proportion of nondiabetic parents who transmitted DR4 to diabetic offspring (22%) was not significantly different from the gene frequency of DR4 in the nondiabetic population (16%), but it was significantly lower (P less than 0.05) than the gene frequency in the overall IDDM population.
435 3489237 These proportions suggest that inheritance of the DR4-associated IDDM susceptibility determinant is not recessive, because in recessive inheritance expression of a trait depends on each parent contributing a susceptibility determinant.
436 3489237 The transmission of predominantly DR4 from affected parents to affected offspring suggests that susceptibility to IDDM is inherited primarily via a single dose of a potent determinant associated with DR4, as in dominant inheritance.
437 3489237 Numerous population data indicate that the DR3DR4 genotype carries a higher relative risk for IDDM than any other genotype, which suggests synergism between the DR3- and DR4-associated determinants.
438 3489237 Insulin-dependent diabetes mellitus (IDDM) susceptibility determinants are known to be associated with both HLA-DR3 and -DR4.
439 3489237 The proportion of nondiabetic parents who transmitted DR4 to diabetic offspring (22%) was not significantly different from the gene frequency of DR4 in the nondiabetic population (16%), but it was significantly lower (P less than 0.05) than the gene frequency in the overall IDDM population.
440 3489237 These proportions suggest that inheritance of the DR4-associated IDDM susceptibility determinant is not recessive, because in recessive inheritance expression of a trait depends on each parent contributing a susceptibility determinant.
441 3489237 The transmission of predominantly DR4 from affected parents to affected offspring suggests that susceptibility to IDDM is inherited primarily via a single dose of a potent determinant associated with DR4, as in dominant inheritance.
442 3489237 Numerous population data indicate that the DR3DR4 genotype carries a higher relative risk for IDDM than any other genotype, which suggests synergism between the DR3- and DR4-associated determinants.
443 3491769 The HLA association with insulin-dependent diabetes mellitus is highest among individuals heterozygous for DR3 and DR4.
444 3491769 These studies demonstrated hybrid molecular dimers corresponding to products of HLA-DQ genes linked to DR3 and DR4, i.e., the DQw2 and DQw3 genes, respectively.
445 3491769 The formation of such DQ alpha (DQw2)-Dq beta (DQw3) dimers potentially contributes a direct molecular mechanism for HLA-associated contributions to disease in DR3/DR4 heterozygotes.
446 3491769 The HLA association with insulin-dependent diabetes mellitus is highest among individuals heterozygous for DR3 and DR4.
447 3491769 These studies demonstrated hybrid molecular dimers corresponding to products of HLA-DQ genes linked to DR3 and DR4, i.e., the DQw2 and DQw3 genes, respectively.
448 3491769 The formation of such DQ alpha (DQw2)-Dq beta (DQw3) dimers potentially contributes a direct molecular mechanism for HLA-associated contributions to disease in DR3/DR4 heterozygotes.
449 3491769 The HLA association with insulin-dependent diabetes mellitus is highest among individuals heterozygous for DR3 and DR4.
450 3491769 These studies demonstrated hybrid molecular dimers corresponding to products of HLA-DQ genes linked to DR3 and DR4, i.e., the DQw2 and DQw3 genes, respectively.
451 3491769 The formation of such DQ alpha (DQw2)-Dq beta (DQw3) dimers potentially contributes a direct molecular mechanism for HLA-associated contributions to disease in DR3/DR4 heterozygotes.
452 3495390 We have reported an increased frequency of the rare B3 allotype of the fourth component of complement (C4B3) in insulin-dependent diabetics, especially in those with microangiopathy.
453 3495390 These results confirm an HLA-linked predisposition to microangiopathy, but do not determine whether the primary association is with C4B3, DR4 or another gene with which they are in linkage disequilibrium.
454 3497749 HLA typing of 100 Type 1 diabetic patients from the Rome area confirmed the strong association with DR3 and DR4 and the prevalence of DR3/4 heterozygotes.
455 3531993 The relative risks (RR) of the immunogenetic markers of insulin-dependent diabetes mellitus (IDDM) have been calculated in a population of 235 IDDM patients compared with a control population.
456 3531993 The highest relative risk was that of subjects heterozygous DR3/DR4 (RR = 47, P less than 0.001) which was still more increased in those who carry this combination associated with the RFLP cluster DQR4 (RR = 72).
457 3531993 The highest risks have been found in addition to DR3/DR4, for DR3 alone and particularly for the combination C4BQ0, DR3 (RR = 9, p less than 0.001) suggesting a role for this peculiar association in the familial penetrance.
458 3531993 In the group of haploidentical siblings, the combination DR3/DR4 and the associations C4BQ0, DR3 and BfF1, DR3 significantly increased the susceptibility for higher familial occurrence of the disease.
459 3531993 The relative risks (RR) of the immunogenetic markers of insulin-dependent diabetes mellitus (IDDM) have been calculated in a population of 235 IDDM patients compared with a control population.
460 3531993 The highest relative risk was that of subjects heterozygous DR3/DR4 (RR = 47, P less than 0.001) which was still more increased in those who carry this combination associated with the RFLP cluster DQR4 (RR = 72).
461 3531993 The highest risks have been found in addition to DR3/DR4, for DR3 alone and particularly for the combination C4BQ0, DR3 (RR = 9, p less than 0.001) suggesting a role for this peculiar association in the familial penetrance.
462 3531993 In the group of haploidentical siblings, the combination DR3/DR4 and the associations C4BQ0, DR3 and BfF1, DR3 significantly increased the susceptibility for higher familial occurrence of the disease.
463 3531993 The relative risks (RR) of the immunogenetic markers of insulin-dependent diabetes mellitus (IDDM) have been calculated in a population of 235 IDDM patients compared with a control population.
464 3531993 The highest relative risk was that of subjects heterozygous DR3/DR4 (RR = 47, P less than 0.001) which was still more increased in those who carry this combination associated with the RFLP cluster DQR4 (RR = 72).
465 3531993 The highest risks have been found in addition to DR3/DR4, for DR3 alone and particularly for the combination C4BQ0, DR3 (RR = 9, p less than 0.001) suggesting a role for this peculiar association in the familial penetrance.
466 3531993 In the group of haploidentical siblings, the combination DR3/DR4 and the associations C4BQ0, DR3 and BfF1, DR3 significantly increased the susceptibility for higher familial occurrence of the disease.
467 3545954 The Type 1 diabetic patients showed a typical HLA pattern, with increased frequencies of B15, DR3, DR4, B8/B15 and DR3/DR4 and decreased frequencies of B7 and DR2.
468 3545954 The Type 2 diabetic patients could be distinguished from blood donors by increased frequencies of Cw4, DR4, DR5 and DR3/DR4, and from Type 1 diabetic patients by increased frequencies of B7, DR2, DR5 and decreased frequency of A9, Bw22 and DR4.
469 3545954 Age at onset and body mass index were unrelated to HLA antigens, but the Type 2 diabetic patients with HLA-Cw4, DR5 and DR6 showed a strong family history for Type 2 diabetes.
470 3545954 Type 2 diabetic patients with HLA-B8, DR4, B8/B15 and DR3/DR4 showed significantly lower C-peptide concentrations (p less than 0.05) than patients without these HLA antigens.
471 3545954 Twelve patients who were positive for both DR3 and DR4 and 23 patients who were DR3/DR4 negative were followed with repeated C-peptide determinations during a period of three years.
472 3545954 The C-peptide concentrations of the DR3/DR4 positive patients decreased during this period, whereas there was no change in C-peptide levels in the DR3/DR4 negative patients.
473 3545954 The Type 1 diabetic patients showed a typical HLA pattern, with increased frequencies of B15, DR3, DR4, B8/B15 and DR3/DR4 and decreased frequencies of B7 and DR2.
474 3545954 The Type 2 diabetic patients could be distinguished from blood donors by increased frequencies of Cw4, DR4, DR5 and DR3/DR4, and from Type 1 diabetic patients by increased frequencies of B7, DR2, DR5 and decreased frequency of A9, Bw22 and DR4.
475 3545954 Age at onset and body mass index were unrelated to HLA antigens, but the Type 2 diabetic patients with HLA-Cw4, DR5 and DR6 showed a strong family history for Type 2 diabetes.
476 3545954 Type 2 diabetic patients with HLA-B8, DR4, B8/B15 and DR3/DR4 showed significantly lower C-peptide concentrations (p less than 0.05) than patients without these HLA antigens.
477 3545954 Twelve patients who were positive for both DR3 and DR4 and 23 patients who were DR3/DR4 negative were followed with repeated C-peptide determinations during a period of three years.
478 3545954 The C-peptide concentrations of the DR3/DR4 positive patients decreased during this period, whereas there was no change in C-peptide levels in the DR3/DR4 negative patients.
479 3545954 The Type 1 diabetic patients showed a typical HLA pattern, with increased frequencies of B15, DR3, DR4, B8/B15 and DR3/DR4 and decreased frequencies of B7 and DR2.
480 3545954 The Type 2 diabetic patients could be distinguished from blood donors by increased frequencies of Cw4, DR4, DR5 and DR3/DR4, and from Type 1 diabetic patients by increased frequencies of B7, DR2, DR5 and decreased frequency of A9, Bw22 and DR4.
481 3545954 Age at onset and body mass index were unrelated to HLA antigens, but the Type 2 diabetic patients with HLA-Cw4, DR5 and DR6 showed a strong family history for Type 2 diabetes.
482 3545954 Type 2 diabetic patients with HLA-B8, DR4, B8/B15 and DR3/DR4 showed significantly lower C-peptide concentrations (p less than 0.05) than patients without these HLA antigens.
483 3545954 Twelve patients who were positive for both DR3 and DR4 and 23 patients who were DR3/DR4 negative were followed with repeated C-peptide determinations during a period of three years.
484 3545954 The C-peptide concentrations of the DR3/DR4 positive patients decreased during this period, whereas there was no change in C-peptide levels in the DR3/DR4 negative patients.
485 3545954 The Type 1 diabetic patients showed a typical HLA pattern, with increased frequencies of B15, DR3, DR4, B8/B15 and DR3/DR4 and decreased frequencies of B7 and DR2.
486 3545954 The Type 2 diabetic patients could be distinguished from blood donors by increased frequencies of Cw4, DR4, DR5 and DR3/DR4, and from Type 1 diabetic patients by increased frequencies of B7, DR2, DR5 and decreased frequency of A9, Bw22 and DR4.
487 3545954 Age at onset and body mass index were unrelated to HLA antigens, but the Type 2 diabetic patients with HLA-Cw4, DR5 and DR6 showed a strong family history for Type 2 diabetes.
488 3545954 Type 2 diabetic patients with HLA-B8, DR4, B8/B15 and DR3/DR4 showed significantly lower C-peptide concentrations (p less than 0.05) than patients without these HLA antigens.
489 3545954 Twelve patients who were positive for both DR3 and DR4 and 23 patients who were DR3/DR4 negative were followed with repeated C-peptide determinations during a period of three years.
490 3545954 The C-peptide concentrations of the DR3/DR4 positive patients decreased during this period, whereas there was no change in C-peptide levels in the DR3/DR4 negative patients.
491 3545954 The Type 1 diabetic patients showed a typical HLA pattern, with increased frequencies of B15, DR3, DR4, B8/B15 and DR3/DR4 and decreased frequencies of B7 and DR2.
492 3545954 The Type 2 diabetic patients could be distinguished from blood donors by increased frequencies of Cw4, DR4, DR5 and DR3/DR4, and from Type 1 diabetic patients by increased frequencies of B7, DR2, DR5 and decreased frequency of A9, Bw22 and DR4.
493 3545954 Age at onset and body mass index were unrelated to HLA antigens, but the Type 2 diabetic patients with HLA-Cw4, DR5 and DR6 showed a strong family history for Type 2 diabetes.
494 3545954 Type 2 diabetic patients with HLA-B8, DR4, B8/B15 and DR3/DR4 showed significantly lower C-peptide concentrations (p less than 0.05) than patients without these HLA antigens.
495 3545954 Twelve patients who were positive for both DR3 and DR4 and 23 patients who were DR3/DR4 negative were followed with repeated C-peptide determinations during a period of three years.
496 3545954 The C-peptide concentrations of the DR3/DR4 positive patients decreased during this period, whereas there was no change in C-peptide levels in the DR3/DR4 negative patients.
497 3556283 The 1-yr incidence of insulin-dependent diabetes mellitus (IDDM) in a population of the Piedmont and Aosta Valley area of Italy was recorded.
498 3556283 Anti-virus antibodies (e.g., Coxsackie B1-6, mumps, cytomegalovirus), islet cell antibodies (ICAs), and HLA-A, -B, -C, and -DR were determined in 74 IDDM patients (38 males, 36 females) and in controls.
499 3556283 ICA frequency was significantly higher in DR3/DR4 heterozygote patients than in patients without DR3 and DR4.
500 3569864 A significantly increased sharing of HLA haplotypes was seen when the index sib was DR3/DR4 compared to those of other genotypes (68% versus 37% sharing 2 haplotypes, p less than .01).
501 3701514 Six had HLA-B8 and -DR3 antigens, and one had B15 and -DR4 phenotypes.
502 3701514 In most patients, a gluten-free diet had little effect on insulin dosage, urinary excretion of glucose, or serum level of hemoglobin A1.
503 3726861 The expected association with B8, B18, Bw62, DR3 and DR4 was observed as well as an excess of DR3/4 heterozygotes.
504 3774753 Using the HLA-DR4 association with two distinct diseases, IDDM and JRA, as a model, we can conclude the following: There are at least seven distinct haplotypes which share the HLA DR4 specificity; these haplotypes include six alleles at the DR-beta genetic locus.
505 3774753 DR4+ IDDM is most closely associated with the DQ 3.2 allele at DQ-beta; DR4+ JRA, on the other hand, appears to be highly associated with rare alleles at DR-beta, but not DQ.
506 3774753 Using the HLA-DR4 association with two distinct diseases, IDDM and JRA, as a model, we can conclude the following: There are at least seven distinct haplotypes which share the HLA DR4 specificity; these haplotypes include six alleles at the DR-beta genetic locus.
507 3774753 DR4+ IDDM is most closely associated with the DQ 3.2 allele at DQ-beta; DR4+ JRA, on the other hand, appears to be highly associated with rare alleles at DR-beta, but not DQ.
508 3856541 Breakdown of data by age of diagnosis of disease showed no increase in the frequency of BfF1 and GLO1-2 but an increase of HLA DR3 and DR4 in patients with early onset diabetes.
509 3862360 Singaporean Chinese IDDM was significantly associated with AW33, BW58, DR3 and DR4.
510 3862360 In the less than or equal to 10 years subgroup, the significant association were either DR3/DRW9, DR3/DR4 or DR3/BLANK.
511 3862360 Singaporean Chinese IDDM was significantly associated with AW33, BW58, DR3 and DR4.
512 3862360 In the less than or equal to 10 years subgroup, the significant association were either DR3/DRW9, DR3/DR4 or DR3/BLANK.
513 3863777 We report a combined segregation and linkage analysis of a Danish sample of 216 insulin-dependent diabetes mellitus (IDDM) nuclear families: of these 216, twenty multiplex families were haplotyped regarding HLA-DR and -B markers.
514 3863777 Particularly strong, positive haplotype associations were found for the DR3,B8, DR3,B18, and DR4,B15 haplotypes, but detailed analyses showed that neither these particular haplotypes nor the DR3 and DR4 haplotypes in general could entirely explain the HLA-associated susceptibility.
515 3876922 Progressive autoimmune beta cell insufficiency: occurrence in the absence of high-risk HLA alleles DR3, DR4.
516 3880963 Her HLA typing showed the following antigens: A1, A28, B8, B12 (44), BW4, BW6 DR3, and DR4.
517 3881821 140 type 1 diabetics from Basle and vicinity were HLA-typed. 89% had HLA-haplotypes DR3, DR4, or DR3/DR4.
518 3881821 Compared to the latter, the relatives had a significantly diminished prevalence of the HLA DR3/DR4 combination.
519 3881821 140 type 1 diabetics from Basle and vicinity were HLA-typed. 89% had HLA-haplotypes DR3, DR4, or DR3/DR4.
520 3881821 Compared to the latter, the relatives had a significantly diminished prevalence of the HLA DR3/DR4 combination.
521 3887826 HLA -B8, -B, -DR3 and -DR4 genotypes, low C4 complement concentrations and islet cell autoantibodies were detected at the time of diagnosis and 1 year later diabetes mellitus developed.
522 3888064 Histocompatibility region genes are major determinants of genetic susceptibility, and more than 90% of Type I individuals express HLA alleles DR3 or DR4.
523 3896215 The distribution of HLA types was not significantly different from a control population, with no increase in DR3 or DR4.
524 3914156 No differences were observed in the frequency of DR3 and DR4 antigens in the two groups but diabetics who developed a remission bore the A 19.2 antigen (9/31 vs 1/16) and the B18 one (11/31 vs 1/16) more frequently, A 19.2 and B18 being associated in 7 cases of this group.
525 3935724 Immunoglobulin heavy and light chain genes are often discussed as susceptibility genes for insulin dependent (type 1) diabetes mellitus (IDDM) in addition to HLA-DR3 and DR4.
526 3935724 While DR3 and DR4 antigens and DR3/DR4 heterozygotes occur significantly more often among diabetics than among normal controls, their Gm allotype frequencies are very similar.
527 3935724 An interaction between special Gm allotypes and phenotypes, on the one side, and DR3, DR4 or DR3, 4 on the other side could not be demonstrated.
528 3935724 Immunoglobulin heavy and light chain genes are often discussed as susceptibility genes for insulin dependent (type 1) diabetes mellitus (IDDM) in addition to HLA-DR3 and DR4.
529 3935724 While DR3 and DR4 antigens and DR3/DR4 heterozygotes occur significantly more often among diabetics than among normal controls, their Gm allotype frequencies are very similar.
530 3935724 An interaction between special Gm allotypes and phenotypes, on the one side, and DR3, DR4 or DR3, 4 on the other side could not be demonstrated.
531 6332753 Analysis of HLA and C4 allotypes suggested that Type 1 diabetes was associated with only certain DR3- and DR4-containing supratypes.
532 6332752 When comparing the distribution of the phenotype C4BQ0 in Type 1 diabetic patients and normal control subjects, the difference was significant in patients bearing DR3 or DR4 (56% and 25%, respectively, p less than 0.003).
533 6333238 Insulin dependent diabetes mellitus (IDDM) is closely associated with special MHC gene products.
534 6333238 The increased diabetic risk for the identical siblings of DR3, DR4-positive patients offers a good opportunity of studying genetically influenced immune deviations in the prediabetic phase which result in the suppression and destruction of Beta cells and finally in the manifestation of diabetes.
535 6334991 Two novel analytic methods to evaluate the roles of the HLA alleles of the human major histocompatibility complex in disease predisposition have been formulated and applied to insulin-dependent diabetes mellitus (IDDM).
536 6334991 In Caucasian populations, after consideration of the predisposing effect of the antigens DR3 and DR4, the protective effect of DR2 in predisposition is demonstrated.
537 6335238 Human lymphocyte antigen (HLA)-DR-typing was performed in 117 insulin-dependent diabetics with age at onset between 0.5 and 17 years (mean +/- SD, 9.0 +/- 3.9); 115 of 117 patients were DR3- and/or DR4-positive.
538 6335238 A comparison between DR3 and DR4 patients showed that DR4 patients manifested a seasonal variation of onset (most common onset during spring and autumn), had more severe signs and symptoms of the disease at onset, and were less likely to have a partial remission than patients with DR3.
539 6336275 Those at risk are adolescent females with HLA DR3 and DR4 as well as those with limited joint mobility.
540 6339368 Among the conditions which have been shown to be HLA-associated more recently, four deserves special mention: (i) maternal immunization against the Zwa antigen because this is a good candidate for an antigen-specific Ir gene action; (ii) IgA deficiency in blood donors because this is a non-antigen-specific immunodeficiency; (iii) idiopathic hemochromatosis and (iv) congenital adrenal hyperplasia due to 21-OH deficiency because immune mechanisms are unlikely to be involved.
541 6339368 HLA plays a definite and strong role in the susceptibility to IDDM, but simple genetic models (dominant, recessive, and intermediate) have been made unlikely on the basis of HLA results; the hypothesis that there are two different susceptibility genes within the HLA system still remains viable, but the demonstration of clinical heterogeneity and/or (better) of different pathogenetic pathways for DR3- and DR4-associated IDDM is required to substantiate it.
542 6341762 In order to test for intrafamilial constancy and intergroup variation, we compared simplex with multiplex families, HLA identical and non identical siblings within families, as well as groups of families characterized by different DR alleles (DR3, DR4, and DR3/DR4) for various immunologic and clinical characteristics.
543 6373322 A high proportion of twins, but not of IGT subjects, had HLA DR3 or DR4 antigens which seem to confer genetic susceptibility to the development of IDDM.
544 6373322 In the majority of DR3/DR4 twins, ICSA were also present.
545 6373322 A high proportion of twins, but not of IGT subjects, had HLA DR3 or DR4 antigens which seem to confer genetic susceptibility to the development of IDDM.
546 6373322 In the majority of DR3/DR4 twins, ICSA were also present.
547 6373451 The frequency and significance of cytoplasmic pancreatic alpha cell autoantibodies (ACA) were investigated in 2102 healthy controls, 879 patients with insulin-dependent diabetes mellitus (IDDM) who were negative for islet cell autoantibodies (ICA), and 1567 relatives of IDDM patients.
548 6373451 ACA were found in approximately 1 in 200 people of all ages and were not significantly associated with IDDM, the IDDM-associated HLA phenotypes DR3 and DR4, or thyrogastric or adrenal autoantibodies.
549 6383905 There is heterogeneity within insulin-dependent diabetes mellitus (IDDM), and it has been suggested that the presence of the HLA-DR specificities DR3 and DR4 define two subsets of IDDM with clear differences in their immune response to therapeutic insulin.
550 6383905 To test this hypothesis, we have prospectively studies the development of insulin binding antibody (IBA) in 54 subjects with newly diagnosed, classical childhood IDDM, determined seven binding constants of their IBA, and measured the presence or absence of pancreatic polypeptide-binding antibodies after 1 yr of therapy with insulin.
551 6383905 There were no relationships between insulin and pancreatic polypeptide antibodies and the DR3 or DR4 specificities whether these specificities were tested for alone or in combination, comparing the presence and absence of DR3 and DR4 and comparing DR3 with DR4, except that of the 33% of all subjects who developed antibodies binding pancreatic polypeptide by 1 yr, none possessed the DR3 specificity alone (P = 0.018).
552 6383905 Thus, the hypothesis that the HLA-DR3 and -DR4 specificities are major determinants of IBA formation and, therefore, define important subsets of childhood IDDM in terms of immune response to therapeutic insulin is not substantiated by this study.
553 6383905 There is heterogeneity within insulin-dependent diabetes mellitus (IDDM), and it has been suggested that the presence of the HLA-DR specificities DR3 and DR4 define two subsets of IDDM with clear differences in their immune response to therapeutic insulin.
554 6383905 To test this hypothesis, we have prospectively studies the development of insulin binding antibody (IBA) in 54 subjects with newly diagnosed, classical childhood IDDM, determined seven binding constants of their IBA, and measured the presence or absence of pancreatic polypeptide-binding antibodies after 1 yr of therapy with insulin.
555 6383905 There were no relationships between insulin and pancreatic polypeptide antibodies and the DR3 or DR4 specificities whether these specificities were tested for alone or in combination, comparing the presence and absence of DR3 and DR4 and comparing DR3 with DR4, except that of the 33% of all subjects who developed antibodies binding pancreatic polypeptide by 1 yr, none possessed the DR3 specificity alone (P = 0.018).
556 6383905 Thus, the hypothesis that the HLA-DR3 and -DR4 specificities are major determinants of IBA formation and, therefore, define important subsets of childhood IDDM in terms of immune response to therapeutic insulin is not substantiated by this study.
557 6383919 Several patterns of HLA-DR expression were noted (DR3/DR4, DR3/DR3, DR3/x, DR3/DR1, DR4/x, DR4/DR7, DR5/DR7, DR1/DR7 and DR1/DR2).
558 6385308 In insulin-dependent diabetes mellitus (IDDM) there is a strong link with the HLA system with regard to the inheritance of 'susceptible' diabetic genes, especially the DR3 and DR4 alleles.
559 6385308 Non-insulin-dependent diabetes mellitus (NIDDM) has no clear HLA link, but has been shown in studies of twins to have a stronger genetic basis than IDDM.
560 6388459 Present knowledge regarding the HLA system and the association between HLA antigens and insulin-dependent type 1 diabetes mellitus (IDDM) is reviewed.
561 6388459 The frequency of HLA antigens B7, B8 (in linkage disequilibrium with DR3), B15 (in linkage disequilibrium with DR4) and B18 was examined in comparison with a Piemontese control group.
562 6392072 To investigate whether the development of islet-cell antibodies (ICA) in the course of mumps infection is associated with a "diabetes-like" immunogenetic condition, 45 children with mumps complications as well as 56 children with insulin-dependent diabetes mellitus (IDDM) were typed for HLA ABC and DR antigens.
563 6392072 In the IDDM group, significant deviations from antigen frequencies of normal controls were observed for HLA Bw39, DR2, DR3, and DR4.
564 6393434 The patients included 296 subjects with insulin-dependent diabetes (IDDM) and 320 with noninsulin dependent diabetes (NIDDM).
565 6393434 Concerning the relationship between HLA-type and ICA in IDDM, there was a tendency for the prevalence of BW54, DR4 and MT3 of HLA to be higher in the ICA-negative group than in the ICA-positive group or the non-diabetic group.
566 6402059 In both the concordant and discordant groups there was a high prevalence of the antigens DR3 and DR4, a low prevalence of DR5 and DR7, and a virtual absence of DR2.
567 6402059 The heterozygous phenotype DR3,DR4 was more prevalent in concordant than discordant pairs.
568 6402059 These findings suggest that possession of both DR3 and DR4 antigens confers a greater genetic predisposition to insulin-dependent diabetes than does the possession of either antigen alone.
569 6402059 In both the concordant and discordant groups there was a high prevalence of the antigens DR3 and DR4, a low prevalence of DR5 and DR7, and a virtual absence of DR2.
570 6402059 The heterozygous phenotype DR3,DR4 was more prevalent in concordant than discordant pairs.
571 6402059 These findings suggest that possession of both DR3 and DR4 antigens confers a greater genetic predisposition to insulin-dependent diabetes than does the possession of either antigen alone.
572 6402059 In both the concordant and discordant groups there was a high prevalence of the antigens DR3 and DR4, a low prevalence of DR5 and DR7, and a virtual absence of DR2.
573 6402059 The heterozygous phenotype DR3,DR4 was more prevalent in concordant than discordant pairs.
574 6402059 These findings suggest that possession of both DR3 and DR4 antigens confers a greater genetic predisposition to insulin-dependent diabetes than does the possession of either antigen alone.
575 6402405 HLA genotypic study of insulin-dependent diabetes the excess of DR3/DR4 heterozygotes allows rejection of the recessive hypothesis.
576 6402405 The genetics of insulin-dependent diabetes mellitus (IDDM) is currently an area of controversy, with some investigators proposing heterogeneity within the HLA region and even the existence of non-HLA-linked susceptibility genes, and others maintaining that a simple autosomal recessive gene linked to HLA with reduced penetrance is an adequate explanation.
577 6402405 It is shown that if the number of DR3/DR4 heterozygotes in a diabetic population exceeds the combined sum of DR3/3 and DR4/4 homozygotes in that same diabetic population, then a recessive mode of inheritance can be rejected.
578 6402405 HLA genotypic study of insulin-dependent diabetes the excess of DR3/DR4 heterozygotes allows rejection of the recessive hypothesis.
579 6402405 The genetics of insulin-dependent diabetes mellitus (IDDM) is currently an area of controversy, with some investigators proposing heterogeneity within the HLA region and even the existence of non-HLA-linked susceptibility genes, and others maintaining that a simple autosomal recessive gene linked to HLA with reduced penetrance is an adequate explanation.
580 6402405 It is shown that if the number of DR3/DR4 heterozygotes in a diabetic population exceeds the combined sum of DR3/3 and DR4/4 homozygotes in that same diabetic population, then a recessive mode of inheritance can be rejected.
581 6407886 HLA-DR and MT1, MT2, MT3 genotypes have been investigated in 123 Type 1 (insulin-dependent) diabetic subjects and their families.
582 6407886 Almost 51% of the probands were DR3, DR4 heterozygotes.
583 6407886 The DR antigen combinations of the parents leading to DR3, DR4 heterozygous and to DR3 and DR4 homozygous offspring were analysed.
584 6407886 There was a marked increase in DR3, DR4 heterozygosity, but no increase in homozygosity for these antigens compared with the expected frequencies.
585 6407886 In each case, the other inherited allele was DR3 or DR4.
586 6407886 HLA-DR and MT1, MT2, MT3 genotypes have been investigated in 123 Type 1 (insulin-dependent) diabetic subjects and their families.
587 6407886 Almost 51% of the probands were DR3, DR4 heterozygotes.
588 6407886 The DR antigen combinations of the parents leading to DR3, DR4 heterozygous and to DR3 and DR4 homozygous offspring were analysed.
589 6407886 There was a marked increase in DR3, DR4 heterozygosity, but no increase in homozygosity for these antigens compared with the expected frequencies.
590 6407886 In each case, the other inherited allele was DR3 or DR4.
591 6407886 HLA-DR and MT1, MT2, MT3 genotypes have been investigated in 123 Type 1 (insulin-dependent) diabetic subjects and their families.
592 6407886 Almost 51% of the probands were DR3, DR4 heterozygotes.
593 6407886 The DR antigen combinations of the parents leading to DR3, DR4 heterozygous and to DR3 and DR4 homozygous offspring were analysed.
594 6407886 There was a marked increase in DR3, DR4 heterozygosity, but no increase in homozygosity for these antigens compared with the expected frequencies.
595 6407886 In each case, the other inherited allele was DR3 or DR4.
596 6407886 HLA-DR and MT1, MT2, MT3 genotypes have been investigated in 123 Type 1 (insulin-dependent) diabetic subjects and their families.
597 6407886 Almost 51% of the probands were DR3, DR4 heterozygotes.
598 6407886 The DR antigen combinations of the parents leading to DR3, DR4 heterozygous and to DR3 and DR4 homozygous offspring were analysed.
599 6407886 There was a marked increase in DR3, DR4 heterozygosity, but no increase in homozygosity for these antigens compared with the expected frequencies.
600 6407886 In each case, the other inherited allele was DR3 or DR4.
601 6411398 HLA-A and -B typing performed on 231 IDDM individuals and 268 controls from the southeastern U.S. showed significant increases with IDDM in A2, B8, B15 and B18, and significant decreases in Aw23, B7, B14 and B17.
602 6411398 Using the method of Curie-Cohen, no significant increases in risk were found for the B8/B15 or DR3/DR4 heterozygotes when compared to the respective homozygotes.
603 6411398 There was a significant increase in B15 and DR4 in those with onset before age 20.
604 6411398 HLA-A and -B typing performed on 231 IDDM individuals and 268 controls from the southeastern U.S. showed significant increases with IDDM in A2, B8, B15 and B18, and significant decreases in Aw23, B7, B14 and B17.
605 6411398 Using the method of Curie-Cohen, no significant increases in risk were found for the B8/B15 or DR3/DR4 heterozygotes when compared to the respective homozygotes.
606 6411398 There was a significant increase in B15 and DR4 in those with onset before age 20.
607 6418443 Ninety-seven percent of Type 1 diabetic patients belonging to the Barts-Windsor family study possess either DR3 or DR4 and about 50% possess both these antigens.
608 6418443 This excess of DR3, DR4 heterozygosity can be best explained by postulating two different susceptibility genes which react in an interactive way.
609 6418443 No increase in DR3 or DR4 homozygosity is found, nor is there an increase in recombination frequency in these families.
610 6418443 Ninety-seven percent of Type 1 diabetic patients belonging to the Barts-Windsor family study possess either DR3 or DR4 and about 50% possess both these antigens.
611 6418443 This excess of DR3, DR4 heterozygosity can be best explained by postulating two different susceptibility genes which react in an interactive way.
612 6418443 No increase in DR3 or DR4 homozygosity is found, nor is there an increase in recombination frequency in these families.
613 6418443 Ninety-seven percent of Type 1 diabetic patients belonging to the Barts-Windsor family study possess either DR3 or DR4 and about 50% possess both these antigens.
614 6418443 This excess of DR3, DR4 heterozygosity can be best explained by postulating two different susceptibility genes which react in an interactive way.
615 6418443 No increase in DR3 or DR4 homozygosity is found, nor is there an increase in recombination frequency in these families.
616 6443704 Initial researches, performed until now almost exclusively upon diabetics treated with conventional heterologous insulin, seem to indicate a positive relationship between haplotype HLA - B15 - DR4 and an elevated immune response, whereas haplotypes HLA - B8 - DR3 and HLA - B18 - DR3 might protect against the formation of anti-insulin antibodies.
617 6443704 Antigens D/DR3 and D/DR4 are known to be primitively associated to susceptibility for type I diabetes, whereas antigens B8, B15, B18 are secondarily associated to the rise in frequency of DR3 and DR4 for the "linkage disequilibrium" existing between alleles of B and D loci.
618 6443704 A study of the frequencies of various HLA-B antigens in both groups of patients, in regard to a control group of piemontese population, in relation to the intensity of association (relative risk) and to the statistical importance of frequencies, shows only a possible protective effect of the HLA-B18 phenotype (linkage disequilibrium with HLA - DR3) towards the production of anti-insulin antibodies and hyperimmune clinical manifestations, such as allergy.
619 6443704 Initial researches, performed until now almost exclusively upon diabetics treated with conventional heterologous insulin, seem to indicate a positive relationship between haplotype HLA - B15 - DR4 and an elevated immune response, whereas haplotypes HLA - B8 - DR3 and HLA - B18 - DR3 might protect against the formation of anti-insulin antibodies.
620 6443704 Antigens D/DR3 and D/DR4 are known to be primitively associated to susceptibility for type I diabetes, whereas antigens B8, B15, B18 are secondarily associated to the rise in frequency of DR3 and DR4 for the "linkage disequilibrium" existing between alleles of B and D loci.
621 6443704 A study of the frequencies of various HLA-B antigens in both groups of patients, in regard to a control group of piemontese population, in relation to the intensity of association (relative risk) and to the statistical importance of frequencies, shows only a possible protective effect of the HLA-B18 phenotype (linkage disequilibrium with HLA - DR3) towards the production of anti-insulin antibodies and hyperimmune clinical manifestations, such as allergy.
622 6541983 To illustrate the method, it is applied to two specific diseases, insulin dependent diabetes mellitus (IDDM) and gluten-sensitive enteropathy (GSE), and a specific locus, the HLA gene complex.
623 6541983 A possible reason for these differences is the markedly increased disease susceptibility of the DR3/DR4 heterozygote for IDDM.
624 6573128 Heterozygous expression of insulin-dependent diabetes mellitus (IDDM) determinants in the HLA system.
625 6573128 HLA phenotypes of cases with insulin-dependent diabetes mellitus (IDDM) and identity by descent of HLA haplotypes in affected sib-pairs support an intermediate model in which morbid risk is increased by one HLA-linked IDDM determinant, and greatly increased by two determinants, which may be qualitatively different in DR3 and DR4 haplotypes.
626 6573128 Linkage analysis allowing for gametic disequilibrium reveals no recombination in pedigrees with a DR3/DR4 propositus, but spurious recombination in the remaining pedigrees.
627 6573128 Heterozygous expression of insulin-dependent diabetes mellitus (IDDM) determinants in the HLA system.
628 6573128 HLA phenotypes of cases with insulin-dependent diabetes mellitus (IDDM) and identity by descent of HLA haplotypes in affected sib-pairs support an intermediate model in which morbid risk is increased by one HLA-linked IDDM determinant, and greatly increased by two determinants, which may be qualitatively different in DR3 and DR4 haplotypes.
629 6573128 Linkage analysis allowing for gametic disequilibrium reveals no recombination in pedigrees with a DR3/DR4 propositus, but spurious recombination in the remaining pedigrees.
630 6573286 A group of patients with Type 1 (insulin-dependent) diabetes mellitus was investigated for HLA-A, B and DR antigens as well as C4 and factor B polymorphism.
631 6573286 A significant excess of DR3/DR4 heterozygotes was observed (27% versus 17% by Hardy-Weinberg expectation).
632 6584368 HLA-A, B, C and DR antigens in young South African blacks with Type 1 (insulin-dependent) diabetes mellitus.
633 6584368 DR3/DR4 heterozygosity was associated with a greater relative risk for developing Type 1 diabetes mellitus (3.7) than the presence of DR3 alone (relative risk 1.6).
634 6586708 Three diabetic haplotypes were confirmed to occur frequently among affected sibs: (a) A1, B8, BFS, C2.1, C4AQO , C4B1 ,DR3, GLO2 ; (b) Aw30, Cw5 ,B18,BFF1,C2.1, C4A3 , C4BQO ,DR3, GLO2 ; (c) A2,Cw3, B15,BFS, C2.1, C4A3 , C4B3 , DR4,GLO1.
635 6589235 The Pittsburgh Insulin-Dependent Diabetes Mellitus (IDDM) study.
636 6589235 The relationships between HLA antigens, sex, age at diagnosis, season of onset and insulin-dependent diabetes mellitus (IDDM) were studied in a consecutive admissions series of newly-diagnosed IDDM patients at Children's Hospital of Pittsburgh.
637 6589235 In agreement with the findings of others, the strongest positive associations between IDDM and HLA antigens were seen with DR3 and DR4 (odds ratios (OR) of 3.5 and 4.4, respectively), while a very strong negative association was observed with DR2 (OR of 0.1).
638 6592118 This supports the hypothesis of two different risk factors associated with DR3 and DR4.
639 6592119 Twenty probands carried DR2, in 11 or whom (55%) it was found in combination with either DR3 or DR4.
640 6592119 However, when the DR2 transmission was analysed separately for parents bearing DR2 with DR3, DR4 or another DR allele, it appeared that DR2 transmission to affected offspring was random when the parents carried neither DR3 or DR4, the transmission deficit being due to over-transmission of DR3 and DR4.
641 6592119 Twenty probands carried DR2, in 11 or whom (55%) it was found in combination with either DR3 or DR4.
642 6592119 However, when the DR2 transmission was analysed separately for parents bearing DR2 with DR3, DR4 or another DR allele, it appeared that DR2 transmission to affected offspring was random when the parents carried neither DR3 or DR4, the transmission deficit being due to over-transmission of DR3 and DR4.
643 6608876 Although association with the DR3 and DR4 alleles is quite strong, pleiotropy with regard to these alleles is unlikely.
644 6610167 Insulin administration (once or twice a day) and glycemic control as reflected by hemoglobin A1C were identical in those with progression and in those with no progression of retinopathy.
645 6610167 Human lymphocyte antigen (HLA) types DR3 and DR4 in combination occurred more frequently (P less than .001) in those with progression of retinopathy than in those without progression.
646 6610167 Teenaged , female, insulin-dependent diabetics with both HLA DR3, and DR4, were at increased risk for developing proliferative retinopathy.
647 6610167 Insulin administration (once or twice a day) and glycemic control as reflected by hemoglobin A1C were identical in those with progression and in those with no progression of retinopathy.
648 6610167 Human lymphocyte antigen (HLA) types DR3 and DR4 in combination occurred more frequently (P less than .001) in those with progression of retinopathy than in those without progression.
649 6610167 Teenaged , female, insulin-dependent diabetics with both HLA DR3, and DR4, were at increased risk for developing proliferative retinopathy.
650 6755530 The subtype of diabetes related to DR4/B15 does not appear to predispose to coeliac disease.
651 6814007 By contrast, the observed frequency of patients homozygous for DR3 or DR4 was not increased, but even slightly decreased.
652 6814007 The data support a model of inheritance comprising at least two closely linked specifically "diabetic" loci (most of the time marked by B18, BfF1, DR3 and B15, BfS, DR4) and a non-specifically "diabetic" haplotype favouring auto-immunisation (most of the time marked by B8, BfS, DR3).
653 6814007 By contrast, the observed frequency of patients homozygous for DR3 or DR4 was not increased, but even slightly decreased.
654 6814007 The data support a model of inheritance comprising at least two closely linked specifically "diabetic" loci (most of the time marked by B18, BfF1, DR3 and B15, BfS, DR4) and a non-specifically "diabetic" haplotype favouring auto-immunisation (most of the time marked by B8, BfS, DR3).
655 6814597 The difference in the binding capacity of beef insulin by the high affinity antibodies between the groups with DR3 and DR4 antigens was less pronounced but still significant.
656 6814597 If extended to human insulin and different HLA-DR and HLA-B antigen patterns, these finding should help in the therapeutic selection of the appropriate insulin and thus reduce the induction of an anti-insulin response in patients with diabetes.
657 6944299 On the other hand, the frequency of A26, B18, and Bw38 was increased in Ashkenazi patients, but not in non-Ashkenazim, who in turn showed an increase for Bw51.
658 6944299 There was a typical excess of DR3/DR4 heterozygotes in both patient groups.
659 6950819 Histocompatibility (HLA) antigens and genotypes B, D and DR were studied in large sample of Caucasian insulin dependent diabetic (IDD) probands.
660 6950819 The associations between IDD and B8, B15, Dw3, Dw4, and DR3, and DR4 were measured by relative risks (RR) and delta values.
661 6951830 We studied 102 randomly ascertained probands from the Upper Midwest United States with insulin-dependent diabetes mellitus (IDDM) with respect to both HLA-DR and Kidd (Jk) markers.
662 6951830 Based on our evidence that multiple genetic mechanisms may be involved in the etiology of IDDM the data were partitioned according to the HLA-DR phenotype, containing either two high risk antigens (DR3 or DR4) or not.
663 6951830 These results strongly suggest a complex model of IDDM inheritance involving, at least, one susceptibility locus in linkage disequilibrium with HLA DR3 and DR4 on chromosome 6, and a second locus in linkage disequilibrium with Jkb on chromosome 2.
664 6951830 We studied 102 randomly ascertained probands from the Upper Midwest United States with insulin-dependent diabetes mellitus (IDDM) with respect to both HLA-DR and Kidd (Jk) markers.
665 6951830 Based on our evidence that multiple genetic mechanisms may be involved in the etiology of IDDM the data were partitioned according to the HLA-DR phenotype, containing either two high risk antigens (DR3 or DR4) or not.
666 6951830 These results strongly suggest a complex model of IDDM inheritance involving, at least, one susceptibility locus in linkage disequilibrium with HLA DR3 and DR4 on chromosome 6, and a second locus in linkage disequilibrium with Jkb on chromosome 2.
667 6979813 The inclusion of HLA data in genetic studies of insulin-dependent diabetes mellitus (IDDM) has not led to conclusive segregation models for IDDM so far.
668 6979813 However, when the pedigrees were divided according to whether or not the proband had the heterozygous HLA-phenotype DR3/DR4, a maximum likelihood ratio test for heterogeneity was significant, with estimated recombination fractions of 0.0 and 0.0963 in HLA-DR3/DR4 pedigrees and the remaining pedigrees, respectively.
669 7011215 HLA-A, B, C, and DR-typing was performed in 51 children with insulin-dependent diabetes.
670 7011215 The combination of DR3 and DR4 was present in 37% of the diabetic children compared with only 4% of the controls.
671 7021118 Significantly positive associations of the disease with HLA DR3 and DR4 and a negative association with DR2 were found.
672 7021118 Positive and negative associations with the various HLA A, B and C antigens (A1, A2, B8, B15, B18, Cw3) are of a secondary nature due to strong genetic coupling with primarily associated DR alleles.
673 7031028 A very high association between ICA and DR3 and DR4 was encountered (chi 2 = 17, with two df); half of the patients positive for either one of these antigens were ICA positive.
674 7031028 These results indicate that ICA associates equally with DR3 and DR4, against the hypothesis that this expression of autoimmunity is more a characteristic of DR3- than of DR4-associated genetic susceptibility.
675 7031028 A very high association between ICA and DR3 and DR4 was encountered (chi 2 = 17, with two df); half of the patients positive for either one of these antigens were ICA positive.
676 7031028 These results indicate that ICA associates equally with DR3 and DR4, against the hypothesis that this expression of autoimmunity is more a characteristic of DR3- than of DR4-associated genetic susceptibility.
677 7031653 Insulin-dependent diabetes mellitus is often accompanied by manifestations of autoimmunity and is frequently associated with certain HLA haplotypes, predominantly DR3 and DR4.
678 7031653 The major histocompatibility antigens corresponding to the H-2 K,D molecules in mice, the H1-A in rats, and the HLA-A, -B, and -C in humans were precipitated from both islet and lymphocyte lysates and were accompanied by beta 2-microglobulin.
679 7547572 ALP, IGA, and PC had the highest 5-year graft survival rates (72.8%, 71.2%, and 68.5%, respectively) whereas HTN and NS, the lowest (51.8% and 46.0%, respectively). 2.
680 7547572 Despite having overall lower graft survival than Whites (p < 0.00001), there was no significant difference between Black and White 3-year graft survival for recipients with PC, ALP, IGA, and SLE. 4.
681 7547572 Whites expressing DR3 and DR4 and DR3 or DR4 alleles had better overall HLA matching (p < 0.001) and graft survival (75.4% and 70.7% versus 58.5% and 65.1%, p < 0.00001) than Blacks with similar DR expression. 8.
682 7553076 One of them was a control person having a family history of diabetes and genetic loci DR4/DR11.
683 7660388 Fifty-seven Thai IDDM patients were studied for HLA class I by LCT and HLA class II by LCT and PCR-RFLP.
684 7660388 In contrast, DQA1*0101, DRB3*0301, DR5 and DQ1 were significantly decreased with R.R. = 0.2, 0.2, 0.3 and 0.5 and Pc < 0.01, 0.05, 0.01 and 0.05, respectively.
685 7660388 However, DR3/DR4 genotype was increased only in female patients with a family history of DM and early onset.
686 7706515 HLA typing for DR3 and DR4 using artificial restriction fragment length polymorphism PCR from archival DNA.
687 7726162 Among patients with insulin-dependent diabetes mellitus (IDDM), an excess of DR3 and DR4 alleles is classically described when compared with the general population.
688 7834558 The HLA typing of both patients showed no relation to DR3 or DR4.
689 7835212 Fifty juvenile insulin dependent diabetes mellitus (JIDDM) patients of Tamil Nadu (South India) were typed for HLA-A, -B, -C, -DR, and -DQ, ESD, GLOI, C3 and HP polymorphisms.
690 7835212 The frequencies of B8, DR3, DR4, DR53 and DQ2 antigens of the HLA system were significantly higher in the patients than in controls (relative risk, RR = 4.81; 5.14; 3.98; 3.36 and 2.53, respectively).
691 7835212 However HLA-DR2, -DR5 and -DQ1, observed less frequently in the patient group, appear to play a role of protection against the disease (RR = 0.32; 0.30 and 0.20 respectively).
692 7914753 Type 1 (insulin-dependent) diabetes is strongly associated with the HLA genes encoding DR3 and DR4 and their associated DQ alleles.
693 8058658 The degree of the immunologic shifts was in direct correlation with the HLA A9 antigen expression, this relationship being the most marked in cases with the HLA DR3 and DR4.
694 8093442 Association of tumor necrosis factor (TNF) and class II major histocompatibility complex alleles with the secretion of TNF-alpha and TNF-beta by human mononuclear cells: a possible link to insulin-dependent diabetes mellitus.
695 8093442 We have investigated the correlation between different tumor necrosis factor (TNF) and class II major histocompatibility complex alleles in the lipopolysaccharide- or phytohemagglutinin-induced secretion of TNF-alpha and TNF-beta by human monocytes and peripheral blood mononuclear cells in 87 unrelated Danish male individuals.
696 8093442 Significant differences in TNF-alpha secretory capacity between TNF NcoI restriction fragment length polymorphisms, TNFa and TNFc microsatellite alleles and DR alleles were identified.
697 8093442 In a group of DR3/DR4 heterozygous patients with insulin-dependent diabetes mellitus (IDDM), the frequency of the TNFa2 allele was higher than in HLA-DR matched controls, whereas the TNFa6 allele was more frequent in control individuals.
698 8093442 In the DR3/DR4 heterozygous diabetic group 12/26 had the alleles combination DQw8, DR4 (Dw4), C4A3, TNFB*2, TNFa2, B15, whereas only 1/18 controls had this haplotype.
699 8093442 This diabetogenic haplotype is identical to the DR4 haplotype which correlates with a higher TNF-alpha response.
700 8093442 These observations suggest a direct role for the TNF locus in the pathogenesis of IDDM.
701 8093442 Association of tumor necrosis factor (TNF) and class II major histocompatibility complex alleles with the secretion of TNF-alpha and TNF-beta by human mononuclear cells: a possible link to insulin-dependent diabetes mellitus.
702 8093442 We have investigated the correlation between different tumor necrosis factor (TNF) and class II major histocompatibility complex alleles in the lipopolysaccharide- or phytohemagglutinin-induced secretion of TNF-alpha and TNF-beta by human monocytes and peripheral blood mononuclear cells in 87 unrelated Danish male individuals.
703 8093442 Significant differences in TNF-alpha secretory capacity between TNF NcoI restriction fragment length polymorphisms, TNFa and TNFc microsatellite alleles and DR alleles were identified.
704 8093442 In a group of DR3/DR4 heterozygous patients with insulin-dependent diabetes mellitus (IDDM), the frequency of the TNFa2 allele was higher than in HLA-DR matched controls, whereas the TNFa6 allele was more frequent in control individuals.
705 8093442 In the DR3/DR4 heterozygous diabetic group 12/26 had the alleles combination DQw8, DR4 (Dw4), C4A3, TNFB*2, TNFa2, B15, whereas only 1/18 controls had this haplotype.
706 8093442 This diabetogenic haplotype is identical to the DR4 haplotype which correlates with a higher TNF-alpha response.
707 8093442 These observations suggest a direct role for the TNF locus in the pathogenesis of IDDM.
708 8093442 Association of tumor necrosis factor (TNF) and class II major histocompatibility complex alleles with the secretion of TNF-alpha and TNF-beta by human mononuclear cells: a possible link to insulin-dependent diabetes mellitus.
709 8093442 We have investigated the correlation between different tumor necrosis factor (TNF) and class II major histocompatibility complex alleles in the lipopolysaccharide- or phytohemagglutinin-induced secretion of TNF-alpha and TNF-beta by human monocytes and peripheral blood mononuclear cells in 87 unrelated Danish male individuals.
710 8093442 Significant differences in TNF-alpha secretory capacity between TNF NcoI restriction fragment length polymorphisms, TNFa and TNFc microsatellite alleles and DR alleles were identified.
711 8093442 In a group of DR3/DR4 heterozygous patients with insulin-dependent diabetes mellitus (IDDM), the frequency of the TNFa2 allele was higher than in HLA-DR matched controls, whereas the TNFa6 allele was more frequent in control individuals.
712 8093442 In the DR3/DR4 heterozygous diabetic group 12/26 had the alleles combination DQw8, DR4 (Dw4), C4A3, TNFB*2, TNFa2, B15, whereas only 1/18 controls had this haplotype.
713 8093442 This diabetogenic haplotype is identical to the DR4 haplotype which correlates with a higher TNF-alpha response.
714 8093442 These observations suggest a direct role for the TNF locus in the pathogenesis of IDDM.
715 8094039 Using RFLPs at V beta 11 and V beta 8 loci TCR beta haplotypes have been identified in five families in which the probands have insulin-dependent diabetes mellitus (IDDM).
716 8094039 An extremely rare haplotype, marked by the higher molecular weight BamH1 allele (H, H) at each of V beta 11 and V beta 8, was found in the DR4+ DR3- probands of two families (P = 0.004).
717 8097419 The frequency distributions of the HLA types DR3, DR4 and DR3/4, which normally confer susceptibility to insulin-dependent diabetes mellitus and of HLA-DR2, which normally confers resistance to insulin-dependent diabetes mellitus, were not different in non-diabetic CF patients, diabetic CF patients and normal subjects.
718 8097419 The genotypic frequencies of tumor necrosis factor-beta and of heat shock protein 70, located within the HLA region on chromosome 6, in CF patients with diabetes were not different from those in patients with insulin-dependent diabetes mellitus, while non-diabetic CF patients and normal subjects shared other patterns.
719 8097419 The frequencies of the interleukin-1 beta alleles, located on chromosome 2, were not different in non-diabetic and diabetic CF patients, insulin-dependent diabetic patients and normal subjects.
720 8157258 Stable cell surface presentation of MHC class I molecules requires active transport of antigenic peptides across the endoplasmic reticulum by products of two genes, TAP1 and TAP2, which are maped in the MHC class II region.
721 8157258 The data suggests that the association of TAP2 allele with IDDM disease may be a simple reflection of the linkage disequilibrium between TAP allele and DR4 gene.
722 8194658 GAD antibody negative NIDDM in adult black subjects with diabetic ketoacidosis and increased frequency of human leukocyte antigen DR3 and DR4.
723 8194658 HLA DR3 and DR4 frequency was higher than in nondiabetic black control subjects (65 vs. 30%, P < 0.012).
724 8194658 GAD antibody negative NIDDM in adult black subjects with diabetic ketoacidosis and increased frequency of human leukocyte antigen DR3 and DR4.
725 8194658 HLA DR3 and DR4 frequency was higher than in nondiabetic black control subjects (65 vs. 30%, P < 0.012).
726 8196846 The relative risk (RR) was calculated using these data and its statistical significance was assessed using the chi-square test. 70.6% of subjects were positive for loci DR3 or DR4, whereas only 7.7% (11 subjects) were found to be carriers of eterozygous DR3-DR4.
727 8196846 The presence of antigen DQw2 is strongly indicative of the disease, both when it is found in an isolated form and in association with DR3 or DR4 (RR = 2.56, 4.03, 3.29 respectively).
728 8196846 The DR3/DR4/DQw2 axis gives a RR of 9.17.
729 8196846 The associations of B8/DR3/DR4 and B8/DR3/DQw2 give a RR of 9.17, whereas the B8/DR4 axis gives a RR of 10.47.
730 8196846 The relative risk (RR) was calculated using these data and its statistical significance was assessed using the chi-square test. 70.6% of subjects were positive for loci DR3 or DR4, whereas only 7.7% (11 subjects) were found to be carriers of eterozygous DR3-DR4.
731 8196846 The presence of antigen DQw2 is strongly indicative of the disease, both when it is found in an isolated form and in association with DR3 or DR4 (RR = 2.56, 4.03, 3.29 respectively).
732 8196846 The DR3/DR4/DQw2 axis gives a RR of 9.17.
733 8196846 The associations of B8/DR3/DR4 and B8/DR3/DQw2 give a RR of 9.17, whereas the B8/DR4 axis gives a RR of 10.47.
734 8196846 The relative risk (RR) was calculated using these data and its statistical significance was assessed using the chi-square test. 70.6% of subjects were positive for loci DR3 or DR4, whereas only 7.7% (11 subjects) were found to be carriers of eterozygous DR3-DR4.
735 8196846 The presence of antigen DQw2 is strongly indicative of the disease, both when it is found in an isolated form and in association with DR3 or DR4 (RR = 2.56, 4.03, 3.29 respectively).
736 8196846 The DR3/DR4/DQw2 axis gives a RR of 9.17.
737 8196846 The associations of B8/DR3/DR4 and B8/DR3/DQw2 give a RR of 9.17, whereas the B8/DR4 axis gives a RR of 10.47.
738 8196846 The relative risk (RR) was calculated using these data and its statistical significance was assessed using the chi-square test. 70.6% of subjects were positive for loci DR3 or DR4, whereas only 7.7% (11 subjects) were found to be carriers of eterozygous DR3-DR4.
739 8196846 The presence of antigen DQw2 is strongly indicative of the disease, both when it is found in an isolated form and in association with DR3 or DR4 (RR = 2.56, 4.03, 3.29 respectively).
740 8196846 The DR3/DR4/DQw2 axis gives a RR of 9.17.
741 8196846 The associations of B8/DR3/DR4 and B8/DR3/DQw2 give a RR of 9.17, whereas the B8/DR4 axis gives a RR of 10.47.
742 8217479 It has been clearly shown that type I diabetic patients more frequently display HLA DR3 and DR4 specificities.
743 8224807 This method has been applied to 27 DR3/DR3 parents and 50 DR4/DR4 parents who have at least 2 children affected with insulin dependent diabetes mellitus (IDDM).
744 8224807 The transmission of both DR3 and DR4 haplotypes is statistically different from 50% (P < 0.05 and P < 0.001, respectively).
745 8448621 A young woman with the HLA phenotype A1, A2, B5, B8, DR3, DR4 developed RA, idiopathic thrombocytopenic purpura (ITP), pernicious anaemia (PA), Hashimoto's thyroiditis (HT), systemic sclerosis (SS), pancreatic exocrine insufficiency (PEI) and coeliac disease (CD) before dying from vasculitic complications.
746 8448621 A family study revealed RA, PA and insulin-dependent diabetes mellitus (IDDM) amongst her first degree relatives.
747 8557177 Variation in the risk of insulin-dependent diabetes mellitus (IDDM) across alleles at HLA-A, B, and DR loci was investigated in a population-based study of 801 families of children with newly diagnosed IDDM in Finland nationwide.
748 8557177 The joint effects of DR3 and DR4 alleles were investigated under dominant, recessive, and additive models of gene expression.
749 8557177 After controlling for the correlation among alleles, significantly elevated risks were found for B13, DR3, DR4, and DR14.
750 8557177 Variation in the risk of insulin-dependent diabetes mellitus (IDDM) across alleles at HLA-A, B, and DR loci was investigated in a population-based study of 801 families of children with newly diagnosed IDDM in Finland nationwide.
751 8557177 The joint effects of DR3 and DR4 alleles were investigated under dominant, recessive, and additive models of gene expression.
752 8557177 After controlling for the correlation among alleles, significantly elevated risks were found for B13, DR3, DR4, and DR14.
753 8722074 Transcomplementation of HLA DQA1-DQB1 in DR3/DR4 and DR3/DR9 heterozygotes and IDDM in Taiwanese families.
754 8747721 Circulating lymphocyte subset imbalance is associated with type-1 insulin-dependent diabetes mellitus (IDDM).
755 8747721 Total B lymphocytes, CD19+ cells, was increased in IDDM patients (P = 0.001), but was comparable to controls in IDDM patients' first-degree relatives.
756 8747721 No quantitative abnormality was demonstrated in CD4+ cells in IDDM patients; however, these cells were higher in their first-degree relatives (P = 0.0089).
757 8747721 Suppressor T lymphocytes, CD8+ cells, in first-degree relatives and controls were not significantly different; however, these cells were significantly reduced in IDDM patients (P = 0.001).
758 8747721 The ratio of CD4+/CD8+ cells was higher in IDDM patients and their first-degree relatives compared to controls (P = 0.0007 and 0.0103, respectively).
759 8747721 However, no relationship was found in the levels of CD3+, CD4+ or CD8+ cells in patients possessing either DR3 or DR4.
760 8875117 Moreover, putative high responder HLA-DR1, DR3 and DR4 alleles were significantly (p < 0.001) more frequent in pre-eclampsia patients (79%) than in controls (59%).
761 8900244 We report here our analysis of HLA class II alleles in 180 Caucasian nuclear families with at least two children with insulin-dependent diabetes mellitus (IDDM).
762 8900244 DRB1, DQA1, DQB1, and DPB1 genotypes were determined with PCR/sequence-specific oligonucleotide probe typing methods.
763 8900244 Consistent with other studies, our data indicate an increase in DR3/DR4, DR3/DR3, and DR4/DR4 genotypes in patients compared to controls.
764 8900244 In addition, we found an increase in DR1/DR4, DR1/DR3, and DR4/DR8 genotypes.
765 8900244 We report here our analysis of HLA class II alleles in 180 Caucasian nuclear families with at least two children with insulin-dependent diabetes mellitus (IDDM).
766 8900244 DRB1, DQA1, DQB1, and DPB1 genotypes were determined with PCR/sequence-specific oligonucleotide probe typing methods.
767 8900244 Consistent with other studies, our data indicate an increase in DR3/DR4, DR3/DR3, and DR4/DR4 genotypes in patients compared to controls.
768 8900244 In addition, we found an increase in DR1/DR4, DR1/DR3, and DR4/DR8 genotypes.
769 8927593 An important factor appears to be a genetic predisposition (HLA DR3/DR4/DQ8) in connection with as yet unknown environmental factors (e.g., viruses).
770 8927593 Autoantibodies, such as islet cell cytoplasmic antibodies (ICA), insulin autoantibodies (IAA), and/or autoantibodies to the GABA-synthesizing enzyme glutamic acid carboxylase (GAD), are already detectable in a prediabetic phase, although it is not possible to predict the time of clinical manifestation.
771 8943434 Autoreactive islet cell Abs (ICA) accompany the pathogenic destruction of pancreatic beta cells in insulin-dependent diabetes mellitus (IDDM).
772 8943434 We have isolated 4 new ICA-reactive B cell lines, one from a DR4/DR11-positive newly diagnosed IDDM patient (MICA 7) and three from a DR3 homozygous patient with both IDDM and Graves' disease (MICA 8-10).
773 8943434 Like MICA 1-6, MICA 7-10 are specific for GAD65, suggesting that GAD65-reactive B cells dominate the ICA response in IDDM.
774 8943434 MICA 1-6, 7, and 8-10, derived from three IDDM patients of different HLA haplotypes, define six different epitopes in GAD65 and represent tools to determine the spectrum, possible HLA association, and temporal order of epitope recognition in IDDM.
775 8948898 The serological findings of HLA antigens showed a significant association of DR3, DR4, DQ2 and DQ8 and a protective effect of DR11, DR15, DQ5, DQ6 and DQ7.
776 8948898 With these results, DNA analysis of HLA-DRB1, B3, B4, DQA1, DQB1, DPA1, DPB1 genes was performed using PCR with allele specific oligotyping.
777 8948898 Positions 57 and 74 of DRB1 locus contribute highly to the expression and severity of IDDM in Mestizos and other ethnic groups, but not in Caucasians or Blacks.
778 8955758 In 15 cadaveric renal transplant patients (10 men, 5 women, ages 29-65 years) with chronic hepatitis C and histological features of chronic active hepatitis, undergoing chronic immunosuppression (ciclosporine A with or without steroid and azathioprine) and treated with recombinant alpha 2b-interferon (IFN alpha) (mean duration 142 +/- 35 days), we assessed before and after this therapy the serum levels of cryoglobulinemia, rheumatoid factors (RF), thyroid-stimulating hormone (TSH), free thyroxine (fT4), and antinuclear (ANA), antismooth muscle (ASMA), antimitochondrial (AMA), anti-LKM1, antimicrosomal thyroid (MCA), antithyroglobulin (TGA) autoantibodies.
779 8955758 At the start of IFN alpha therapy, 14 of 15 patients had detectable autoantibodies (RF: 9; ANA > 1/50: 8; ASMA > 1/50: 4; other autoantibodies: 0); 1 had cryoglobulinemia.
780 8955758 Finally, the occurrence of autoantibodies in our patients was associated either with HLA DR3 or DR4 or DR7 phenotypes.
781 8955758 We found that the prevalence of extrahepatic immunologic abnormalities was high in renal transplant patients with chronic hepatitis C and no exacerbation was observed during of after IFN alpha therapy.
782 8955758 The most frequent autoantibody appearing after IFN alpha therapy was MCA although without thyroid abnormalities.
783 8971095 HLA-encoded genetic predisposition in IDDM: DR4 subtypes may be associated with different degrees of protection.
784 9015682 We confirm for a Spanish population the high frequency of risk genotypes for Type I, involving DR3, DR4 and DQB1*0302 (DQ8) which were present in 26 of 28 (93%) patients and 32 of 41 (78%) relatives.
785 9065059 An important factor appears to be a genetic predisposition (HLA DR3/DR4/DQ8) in connection with as yet unknown environmental factors (e.g., viruses).
786 9065059 Autoantibodies, such as islet cell cytoplasmic antibodies (ICA), insulin autoantibodies (IAA) and/or autoantibodies to the GABA-synthesizing enzyme glutamic acid carboxylase (GAD), are already detectable in a prediabetic phase, though it is not possible to predict the time of clinical manifestation.
787 9098435 The role of HLA class II alleles in genetic predisposition to insulin-dependent diabetes mellitus (IDDM) was examined using Polymerase Chain Reaction/oligonucleotide probe typing (PCR/SSOs) of eight HLA class II loci in 58 IDDM patients and 50 healthy controls from the Northwest of Spain (Asturias).
788 9098435 By using the aetiologic fraction (delta) as an almost absolute measure of the strongest linkage of disequilibrium of a HLA marker to the putative Type I susceptibility locus, it has been found that the strength of association of the HLA markers may be quantified as follows: DQA1*03-DQB1*0302 or DQA1*0501-DQB1*0201 > DR3 or DR4; presence of more than one dimer DQ alpha beta of the six proposed by Rønningen > non-Asp57 DQ beta and Arg52 DQ alpha > Arg52 DQ alpha > non-Asp57 DQ beta/non-Asp57 DQ beta > DRB1*0301; DQA1*0501-DQB1*0201 > DQA1*03-DQB1*0302; DQB1*0302.
789 9098450 Application of the relative predispositional effect (RPE) method to our data, revealed a further susceptibility risk provided by the DRB1*13-DQA1*0102-DQB1*0604 haplotype once DR3 and DR4 haplotypes were removed.
790 9201596 The aim of this study was to evaluate the role of HLA (human leucocyte antigen) class I (A, B, C) and class II (DR) alleles and familial insulin-dependent diabetes mellitus as possible risk markers for early retinopathy in a population of 103 Finnish adolescents with type I diabetes mellitus for 3.6-16.2 years.
791 9201596 The frequency of HLA DR3, DR4, or DR3/4 heterozygosity did not differ between the two groups of patients.
792 9239904 The role of HLA class II alleles in the genetic susceptibility to develop insulin-dependent diabetes mellitus (IDDM) was examined by means of PCR and oligospecific probes in 63 IDDM children and 74 controls subjects.
793 9239904 In diabetic patients we found a significant increase in the alleles frequency DR3, DR4, DQB1*0302 and DQA1*0301 compared to the control group, where the most prevalent alleles were DR2, DR14 (DRB1*1402), DQA1*0101 and DQA1*0201.
794 9254534 At the present time, there are markers which we can use to identify individuals with a high susceptibility of developing insulin-dependent diabetes mellitus (IDDM) years before the onset of the disease.
795 9254534 Insulin-dependent diabetes mellitus is an autoimmune disease strongly associated with HLA antigens DR3 and DR4.
796 9254534 In this manuscript, we discuss the usefulness of several markers, such as islet cell antibodies, insulin autoantibodies and glutamic acid decarboxylase antibodies, to identify individuals with a high susceptibility to IDDM before the disease is clinically evident.
797 9254534 Currently, two large-scale multicentric human trials, one in Europe using nicotinamide (European Nicotinamide Diabetes Intervention Trial, ENDIT) and the other in the USA using insulin (Diabetes Prevention Trial), are now in full activity and will test the benefits of these drugs in the prophylaxis of IDDM in highly susceptible individuals.
798 9353155 CTLA-4 gene polymorphism confers susceptibility to insulin-dependent diabetes mellitus (IDDM) independently from age and from other genetic or immune disease markers.
799 9353155 Apart from genes in the HLA complex (IDDM1) and the variable number of tandem repeats in the 5' region of the insulin gene (INS VNTR, IDDM2), several other loci have been proposed to contribute to IDDM susceptibility.
800 9353155 Recently, linkage and association have been shown between the cytotoxic T lymphocyte-associated protein 4 (CTLA-4) gene on chromosome 2q and IDDM.
801 9353155 In a registry-based group of 525 recent-onset IDDM patients <40 years old we investigated the possible interactions of a CTLA-4 gene A-to-G transition polymorphism with age at clinical disease onset and with the presence or absence of established genetic (HLA-DQ, INS VNTR) and immune disease markers (autoantibodies against islet cell cytoplasm (ICA); insulin (IAA); glutamate decarboxylase (GAD65-Ab); IA-2 protein tyrosine phosphatase (IA-2-Ab)) determined within the first week of insulin treatment.
802 9353155 G-allele-containing CTLA-4 genotypes (relative risk (RR)= 1.5; 95% confidence interval (CI) = 1.2-2.0; P < 0.005) were not preferentially associated with age at clinical presentation or with the presence of other genetic (HLA-DR3 or DR4 alleles; HLA-DQA1*0301-DQB1*0302 and/or DQA1*0501-DQB1*0201 risk haplotypes; INS VNTR I/I risk genotype) or immune (ICA, IAA, IA-2-Ab, GAD65-Ab) markers of diabetes.
803 9353155 For 151 patients, thyrogastric autoantibodies (anti-thyroid peroxidase, anti-thyroid-stimulating hormone (TSH) receptor, anti-parietal cell, anti-intrinsic factor) were determined, but association between CTLA-4 risk genotypes and markers of polyendocrine autoimmunity could not be demonstrated before or after stratification for HLA- or INS-linked risk.
804 9353155 In conclusion, the presence of a G-containing CTLA-4 genotype confers a moderate but significant RR for IDDM that is independent of age and genetic or immune disease markers.
805 9405979 Persistent GAD 65 antibodies in longstanding IDDM are not associated with residual beta-cell function, neuropathy or HLA-DR status.
806 9405979 Persistent humoral autoimmunity to the enzyme glutamic acid decarboxylase (GAD) has been described in a substantial proportion of patients with insulin-dependent diabetes mellitus (IDDM) of long duration.
807 9405979 Because the GAD 65 isoform is mainly expressed in pancreatic beta-cells and in the nervous system we investigated in the present study of the largest number of well characterized patients with longstanding IDDM (n = 105; median duration: 21 years; range: 10-46 years) the presence of autoantibodies to GAD 65 and their relationship to a residual C-peptide response or peripheral and autonomic neuropathy.
808 9405979 One hundred healthy control subjects and 100 recent onset IDDM patients were also studied for GAD 65 antibodies.
809 9405979 GAD 65 antibodies were detected in a radioligand-binding-assay with recombinant human GAD 65 and were present in 32% of the long-term diabetic patients, 82% of the recent onset IDDM patients and in 3% of the healthy control subjects.
810 9405979 Patients who were heterozygous for DR3/DR4 were found in 23% of the cases.
811 9405979 GAD 65 antibodies were significantly less frequent in the long-term IDDM patients compared to recent onset IDDM (p < 0.001), and diabetes duration showed a significant negative correlation with GAD 65 antibody index levels (r = 0.22, p < 0.01).
812 9405979 In conclusion neither residual beta-cell function nor diabetic neuropathy or a certain HLA-DR specificity are exclusively associated with persistent autoimmunity directed to GAD 65 in longstanding IDDM.
813 9438201 Five to 20% insulin-dependent diabetes mellitus (IDDM) patients do not bear the classical HLA class II DR3 or DR4 susceptibility haplotypes.
814 9498628 It has been proposed that molecular mimicry between protein 2C (p2C) of coxsackie virus B4 and the autoantigen glutamic acid decarboxylase (GAD65) plays a role in the pathogenesis of insulin-dependent diabetes mellitus (IDDM).
815 9498628 Therefore, we tested whether the PEVKEK motif can bind to the IDDM-associated HLA-DR1, -DR3 and -DR4 molecules.
816 9704223 Similar frequencies of HLA-DR2, DR3, and DR4 antigens in healthy pregnant women and women with GDM and low prevalences of markers for autoimmune destruction of the beta-cells in GDM pregnancy rule out the possibility that GDM is a disease of autoimmune origin.
817 9704223 Insulin receptor binding to target tissues is largely unaffected by normal and GDM pregnancy; the same is true for basal and insulin-stimulated insulin receptor-bound tyrosine kinase activity.
818 9704223 Hormones that circulate in high concentrations in pregnancy (e.g., progesterone, cortisol, prolactin, human placental lactogen, and estrogen) have all been shown, in animal models, to be able to influence beta-cell function and/or the peripheral tissue sensitivity to insulin, but whether they play similar roles in human pregnancy remains to be investigated.
819 9827157 In insulin-dependent diabetes mellitus, HLA-DR markers are involved, namely DR3, DR4 and DR9 alleles, among black senegalese populations.
820 9828917 Autoimmune IDDM in a sporadic MELAS patient with mitochondrial tRNA(Leu(UUR)) mutation.
821 9828917 He was also affected with insulin-dependent diabetes mellitus (IDDM), as diagnosed by the experience of diabetic ketoacidosis (DKA), and dependence on insulin therapy.
822 9828917 In addition, human leucocyte associated antigen (HLA) typing showed DR3 and DR4, suggesting the strong contribution of autoimmunity to the pathogenesis of IDDM in this patient.
823 9828917 This extremely rare case of sporadic MELAS syndrome with autoimmune IDDM harbouring mtDNA mutation highlights the possible pathogenetic role of mtDNA mutations in autoimmune disease.
824 9867222 Mutations in the hepatocyte nuclear factor-1alpha (HNF-1alpha) gene are the cause of maturity-onset diabetes of the young type 3 (MODY3), which is characterised by a severe impairment of insulin secretion and an early onset of the disease.
825 9867222 Also at onset of diabetes some MODY patients show similar clinical symptoms and signs as patients with Type I (insulin-dependent) diabetes mellitus.
826 9867222 DR3 or DR4 or both were examined by single-strand conformational polymorphism scanning and direct sequencing of the coding region and the minimal promoter of the HNF-1alpha gene.
827 10197051 Blockade of this presentation event via synthetic ligands that bind to disease-associated MHCs (such as DR1 and DR4) may be useful for the treatment of autoimmune diseases such as rheumatoid arthritis, Type 1 diabetes, multiple sclerosis, lupus erthymatosis and Graves disease.
828 10197051 Recently reported synthetic ligands for DR1 and DR4 are short modified peptides (2-7 mers) capable of competing at nanomolar concentrations with antigenic peptides for the DR (MHC) binding groove.
829 10197051 Blockade of this presentation event via synthetic ligands that bind to disease-associated MHCs (such as DR1 and DR4) may be useful for the treatment of autoimmune diseases such as rheumatoid arthritis, Type 1 diabetes, multiple sclerosis, lupus erthymatosis and Graves disease.
830 10197051 Recently reported synthetic ligands for DR1 and DR4 are short modified peptides (2-7 mers) capable of competing at nanomolar concentrations with antigenic peptides for the DR (MHC) binding groove.
831 10404800 Predictive value of human leukocyte antigen class II typing for the development of islet autoantibodies and insulin-dependent diabetes postpartum in women with gestational diabetes.
832 10404800 Gestational diabetes mellitus (GDM) is a risk factor for the development of insulin-dependent diabetes mellitus (IDDM) and noninsulin-dependent diabetes mellitus postpartum.
833 10404800 To evaluate whether there is any association of human leukocyte antigen (HLA) class II alleles (DR and DQ) with GDM and the postpartum development of IDDM, we analyzed 184 women with GDM from Germany for HLA class II alleles, islet autoantibodies [islet cell autoantibodies (ICA), glutamic acid decarboxylase autoantibodies (GADA), and protein tyrosine phosphatase IA-2 autoantibodies (IA-2A), and the postpartum development of diabetes.
834 10404800 Twenty-five (59.5%) islet antibody-positive women and 17 (74%) women who developed IDDM postpartum had a DR3- or DR4-containing genotype.
835 10404800 The cumulative risk to develop IDDM within 2 yr postpartum in GDM women with either DR3 or DR4 was 22% compared to 7% in women without those alleles (P = 0.02) and rose to 50% in the DR3- or DR4-positive women who had required insulin during pregnancy (P = 0.006).
836 10404800 Combining the determination of susceptible HLA alleles (DR3, DR4) with islet autoantibody measurement increased the sensitivity of identifying GDM women developing postpartum IDDM to 92%, but did not improve risk assessment above that achieved using GADA measurement alone, which was the strongest predictor of IDDM.
837 10404800 Predictive value of human leukocyte antigen class II typing for the development of islet autoantibodies and insulin-dependent diabetes postpartum in women with gestational diabetes.
838 10404800 Gestational diabetes mellitus (GDM) is a risk factor for the development of insulin-dependent diabetes mellitus (IDDM) and noninsulin-dependent diabetes mellitus postpartum.
839 10404800 To evaluate whether there is any association of human leukocyte antigen (HLA) class II alleles (DR and DQ) with GDM and the postpartum development of IDDM, we analyzed 184 women with GDM from Germany for HLA class II alleles, islet autoantibodies [islet cell autoantibodies (ICA), glutamic acid decarboxylase autoantibodies (GADA), and protein tyrosine phosphatase IA-2 autoantibodies (IA-2A), and the postpartum development of diabetes.
840 10404800 Twenty-five (59.5%) islet antibody-positive women and 17 (74%) women who developed IDDM postpartum had a DR3- or DR4-containing genotype.
841 10404800 The cumulative risk to develop IDDM within 2 yr postpartum in GDM women with either DR3 or DR4 was 22% compared to 7% in women without those alleles (P = 0.02) and rose to 50% in the DR3- or DR4-positive women who had required insulin during pregnancy (P = 0.006).
842 10404800 Combining the determination of susceptible HLA alleles (DR3, DR4) with islet autoantibody measurement increased the sensitivity of identifying GDM women developing postpartum IDDM to 92%, but did not improve risk assessment above that achieved using GADA measurement alone, which was the strongest predictor of IDDM.
843 10404800 Predictive value of human leukocyte antigen class II typing for the development of islet autoantibodies and insulin-dependent diabetes postpartum in women with gestational diabetes.
844 10404800 Gestational diabetes mellitus (GDM) is a risk factor for the development of insulin-dependent diabetes mellitus (IDDM) and noninsulin-dependent diabetes mellitus postpartum.
845 10404800 To evaluate whether there is any association of human leukocyte antigen (HLA) class II alleles (DR and DQ) with GDM and the postpartum development of IDDM, we analyzed 184 women with GDM from Germany for HLA class II alleles, islet autoantibodies [islet cell autoantibodies (ICA), glutamic acid decarboxylase autoantibodies (GADA), and protein tyrosine phosphatase IA-2 autoantibodies (IA-2A), and the postpartum development of diabetes.
846 10404800 Twenty-five (59.5%) islet antibody-positive women and 17 (74%) women who developed IDDM postpartum had a DR3- or DR4-containing genotype.
847 10404800 The cumulative risk to develop IDDM within 2 yr postpartum in GDM women with either DR3 or DR4 was 22% compared to 7% in women without those alleles (P = 0.02) and rose to 50% in the DR3- or DR4-positive women who had required insulin during pregnancy (P = 0.006).
848 10404800 Combining the determination of susceptible HLA alleles (DR3, DR4) with islet autoantibody measurement increased the sensitivity of identifying GDM women developing postpartum IDDM to 92%, but did not improve risk assessment above that achieved using GADA measurement alone, which was the strongest predictor of IDDM.
849 10426387 The strongest associations were found with the A locus: DR3/DR4 genotype frequency decreases with age of onset in this data set only among A*0101- individuals, and A*2402 is strongly associated with younger age of onset in many DR-DQ haplotypes.
850 10714434 The analysis of in vitro transforming growth factor-beta1 (TGF-beta1) production by peripheral blood in overt and pre-clinical type 1 diabetes mellitus.
851 10714434 The alterations of TGF-beta1 production are believed to contribute to the development of insulin-dependent diabetes mellitus (IDDM) in animal models as well as in humans.
852 10714434 The aim of our study was to evaluate in vitro TGF-beta1 production by peripheral blood of newly diagnosed type 1 diabetes patients and subjects in the pre-clinical stage of the disease in comparison to healthy controls and relatives of IDDM patients with low genetic risk for diabetes development.
853 10714434 In the first degree relatives HLA typing (for DR3, DR4 and DQB1*0602 alleles), measurements of anti-pancreatic antibodies (ICA, GADA, IA-2A, IAA) and intravenous glucose tolerance tests were performed.
854 10714434 In the group of first degree relatives TGF-beta1 levels were highest in subjects with the presence of two or more pancreatic autoantibodies and/or with impaired insulin release in IVGTT, but lowest in relatives with protective DQB1*0602 alleles (P < 0.01).
855 10714434 There was also a significant positive correlation between the TGF-beta1 levels and HbA1C in the IDDM subjects and first degree relatives (P < 0.03).
856 10725774 Thyroid autoimmunity tended to be more prevalent in the subgroup of patients with the HLA type DR3/DR4 compared to patients with other HLA types (p = 0.08).
857 10871191 HLA DQ8 and DQ2 have been shown to strongly predispose to disease and to be in linkage disequilibrium with at-risk DR4 and DR3 alleles, respectively.
858 10871191 Inheritance of a mixed DR3/DR4 haplotype confers the greatest risk.
859 10871191 HLA DQ8 and DQ2 have been shown to strongly predispose to disease and to be in linkage disequilibrium with at-risk DR4 and DR3 alleles, respectively.
860 10871191 Inheritance of a mixed DR3/DR4 haplotype confers the greatest risk.
861 11024583 Some environmental and genetic factors play important roles in etiopathogenesis of type 1 or insulin-dependent diabetes mellitus (IDDM).
862 11024583 HLA genes, the IDDM1 locus located the human chromosome 6, were found to be associated with insulin-dependent diabetes mellitus.
863 11024583 To study detailed molecular structure of class II HLA molecules and disease association, we examined several amino acid residues on DQalpha and DQbeta chains and the molecular mechanisms to explain the heterozygotic effect of the DR3/DR4 and DR3/DR9 in the Chinese population.
864 11024583 Among the several class II alleles, a closer segregation of HLA-DQB1*0401 to the affected persons might suggest that HLA-DQB1*0401 itself or an allele closely linked to the DQB1 locus was the IDDM-predisposing allele in Taiwanese.
865 11024583 For IDDM2 (INS) region, association with IDDM was not found due to that more than 90% of the population carried class I alleles.
866 11221543 Our results revealed that the frequencies of DR3, DR4 and DR9 in diabetes patients were significantly higher than those in control group (all P < 0.01).
867 11221543 The susceptible alleles were DR3, DR4, DR9, with relative risks of 8.25, 2.57 and 2.67, respectively.
868 11221543 There was a trend that the frequencies of DR9 decreased with the increase of age at onset, but there was no significant difference of DR3, DR4, DR9, DR3/4, DR3/9 and DR4/9 frequencies between diabetes children with age onset 0-10 years and 11-17 years.
869 11221543 Our results revealed that the frequencies of DR3, DR4 and DR9 in diabetes patients were significantly higher than those in control group (all P < 0.01).
870 11221543 The susceptible alleles were DR3, DR4, DR9, with relative risks of 8.25, 2.57 and 2.67, respectively.
871 11221543 There was a trend that the frequencies of DR9 decreased with the increase of age at onset, but there was no significant difference of DR3, DR4, DR9, DR3/4, DR3/9 and DR4/9 frequencies between diabetes children with age onset 0-10 years and 11-17 years.
872 11221543 Our results revealed that the frequencies of DR3, DR4 and DR9 in diabetes patients were significantly higher than those in control group (all P < 0.01).
873 11221543 The susceptible alleles were DR3, DR4, DR9, with relative risks of 8.25, 2.57 and 2.67, respectively.
874 11221543 There was a trend that the frequencies of DR9 decreased with the increase of age at onset, but there was no significant difference of DR3, DR4, DR9, DR3/4, DR3/9 and DR4/9 frequencies between diabetes children with age onset 0-10 years and 11-17 years.
875 11269900 He expresses the alleles DQ2 A1 0501 and B1 which are strongly associated with susceptibility to insulin-dependent diabetes mellitus and celiac disease, but don't express antigens HLA class II DR3 and DR4 that are more frequent in these entities.
876 11532327 Higher prevalence of GAD antibody in diabetes patients using a new radioligand-binding assay with recombinant human GAD65 antibodies (GAD65Ab) has been seen in several studies.
877 11532327 There was no significant difference in gender, diabetes onset and duration, HbA1c, C-peptide concentration and frequencies of HLA DR3, DR4, DR9, DR3/DR4, DR3/DR9 and DR4/DR9 genotypes between GAD65Ab+ and GAD65Ab- groups.
878 11532327 The frequencies of antimicrosomal and anti-thyroglobulin antibodies in GAD65Ab+ (13.5,8.1%, respectively) were not different from GAD65- patients (9.4,12.5%, respectively).
879 11668578 Both groups of probands have almost identical frequencies of DR and DQ haplotypes but significantly different IBD distributions in the subset of families with probands who do not carry the highly predisposing DR3/DR4 genotype.
880 11668578 Our results are consistent with previous reports implicating DPB1 in IDDM susceptibility.
881 11679444 To study the dynamics of disease-associated humoral immune responses, we analyzed autoantibodies to the IA-2 protein (IA-2A), glutamic acid decarboxylase (GADA), and insulin (IAA) and also islet cell antibodies (ICA) in a population-based, prospective, representative series of 710 siblings (<20 years of age) of children with type 1 diabetes.
882 11679444 Positive seroconversions seemed to be associated with a young age of the sibling, HLA DR3/DR4 heterozygosity, HLA identity, and a high initial number of detectable autoantibodies.
883 11679444 No consistent risk factor for inverse seroconversions was present, although seroconversions were most frequent in siblings with older age, male sex, HLA phenotypes other than DR3/DR4, a small family size, and no other autoantibodies detectable at seroconversion.
884 11679444 To study the dynamics of disease-associated humoral immune responses, we analyzed autoantibodies to the IA-2 protein (IA-2A), glutamic acid decarboxylase (GADA), and insulin (IAA) and also islet cell antibodies (ICA) in a population-based, prospective, representative series of 710 siblings (<20 years of age) of children with type 1 diabetes.
885 11679444 Positive seroconversions seemed to be associated with a young age of the sibling, HLA DR3/DR4 heterozygosity, HLA identity, and a high initial number of detectable autoantibodies.
886 11679444 No consistent risk factor for inverse seroconversions was present, although seroconversions were most frequent in siblings with older age, male sex, HLA phenotypes other than DR3/DR4, a small family size, and no other autoantibodies detectable at seroconversion.
887 11770176 The occurrence of the haplotypes HLA DQ2/DR3 and/or DQ8/DR4 was observed in two thirds of type 1 diabetic and LADA patients.
888 12021131 Among 3756 newborns born in southeast Sweden we have found the high-risk genotype DQ2/DR3-DO8/DR4 to be present in 1%, haplotype DQ8/DR4 in 7.8%, and haplotype DQ2/DR3 in 9.6%.
889 12021131 DQ2/DR3 or DQ8/DR4 was carried by 16.4% of newborns; the low-risk DQ6 molecule was carried by newborns as follows: DQ2/DR3-DQ6/DR15, 1.3%; DQ8/DR4-DQ6/DR15, 1.3%; and DQ6/DR15, 9.4%.
890 12021131 Among 3756 newborns born in southeast Sweden we have found the high-risk genotype DQ2/DR3-DO8/DR4 to be present in 1%, haplotype DQ8/DR4 in 7.8%, and haplotype DQ2/DR3 in 9.6%.
891 12021131 DQ2/DR3 or DQ8/DR4 was carried by 16.4% of newborns; the low-risk DQ6 molecule was carried by newborns as follows: DQ2/DR3-DQ6/DR15, 1.3%; DQ8/DR4-DQ6/DR15, 1.3%; and DQ6/DR15, 9.4%.
892 12021135 Associations of HLA-DR3/DQ2 with GAD65 and DR4 with IA-2 antibodies in insulin-dependent diabetes mellitus (IDDM) and DR3/DQ2 with GAD65 antibodies in latent autoimmune diabetes in adult (LADA) patients are known.
893 12021135 The aim of the present study was to look for association of HLA DR and DQ with GAD65, IA2 and ICA12 antibodies in IDDM (n = 97), LADA (n = 32), and malnutrition-modulated diabetes mellitus (MMDM) (n = 22) patients from northern India.
894 12021135 Antibodies to GAD65, IA-2, and ICA-12 were assayed by radioimmunoassay using (35)S-labeled recombinant human GAD65, IA2, and ICA12 using the in vitro transcription-translation method.
895 12021135 We found DR3 (29% vs. 11%) and DQ2 (36% vs. 14%) were increased in GAD65 antibody-positive compared to GAD65 antibody-negative IDDM patients (P > 0.05).
896 12021135 ICA 12 antibodies were increased in either DR3 or DR4 (84% vs. 69%) positives compared to non-DR3/DR4 IDDM patients (P > 0.05).
897 12021135 However in LADA patients, ICA12 was increased in non-DR3/DR4 patients compared to DR3- or DR4-positive patients (P < 0.05).
898 12021135 Associations of HLA-DR3/DQ2 with GAD65 and DR4 with IA-2 antibodies in insulin-dependent diabetes mellitus (IDDM) and DR3/DQ2 with GAD65 antibodies in latent autoimmune diabetes in adult (LADA) patients are known.
899 12021135 The aim of the present study was to look for association of HLA DR and DQ with GAD65, IA2 and ICA12 antibodies in IDDM (n = 97), LADA (n = 32), and malnutrition-modulated diabetes mellitus (MMDM) (n = 22) patients from northern India.
900 12021135 Antibodies to GAD65, IA-2, and ICA-12 were assayed by radioimmunoassay using (35)S-labeled recombinant human GAD65, IA2, and ICA12 using the in vitro transcription-translation method.
901 12021135 We found DR3 (29% vs. 11%) and DQ2 (36% vs. 14%) were increased in GAD65 antibody-positive compared to GAD65 antibody-negative IDDM patients (P > 0.05).
902 12021135 ICA 12 antibodies were increased in either DR3 or DR4 (84% vs. 69%) positives compared to non-DR3/DR4 IDDM patients (P > 0.05).
903 12021135 However in LADA patients, ICA12 was increased in non-DR3/DR4 patients compared to DR3- or DR4-positive patients (P < 0.05).
904 12021135 Associations of HLA-DR3/DQ2 with GAD65 and DR4 with IA-2 antibodies in insulin-dependent diabetes mellitus (IDDM) and DR3/DQ2 with GAD65 antibodies in latent autoimmune diabetes in adult (LADA) patients are known.
905 12021135 The aim of the present study was to look for association of HLA DR and DQ with GAD65, IA2 and ICA12 antibodies in IDDM (n = 97), LADA (n = 32), and malnutrition-modulated diabetes mellitus (MMDM) (n = 22) patients from northern India.
906 12021135 Antibodies to GAD65, IA-2, and ICA-12 were assayed by radioimmunoassay using (35)S-labeled recombinant human GAD65, IA2, and ICA12 using the in vitro transcription-translation method.
907 12021135 We found DR3 (29% vs. 11%) and DQ2 (36% vs. 14%) were increased in GAD65 antibody-positive compared to GAD65 antibody-negative IDDM patients (P > 0.05).
908 12021135 ICA 12 antibodies were increased in either DR3 or DR4 (84% vs. 69%) positives compared to non-DR3/DR4 IDDM patients (P > 0.05).
909 12021135 However in LADA patients, ICA12 was increased in non-DR3/DR4 patients compared to DR3- or DR4-positive patients (P < 0.05).
910 12021139 Patients with type 1 diabetes had significantly higher frequency of DR3, DQ2, DR4, and DQ8 alleles when compared to healthy controls.
911 12021139 No significant difference was observed in frequency of DR3 between ABO blood group incompatibility and type 1 diabetes patients.
912 12021140 Microsatellite allele 5 of MHC class I chain-related gene a increases the risk for insulin-dependent diabetes mellitus in latvians.
913 12021140 Insulin-dependent diabetes mellitus (IDDM) is one of the most common chronic diseases.
914 12021140 HLA-DQ8/DR4 and DQ2/DR3 are positively associated with IDDM and DQ6 is negatively associated with IDDM in most Caucasian populations.
915 12021140 The MICA gene is located in the MHC class I region and is expressed by monocytes, keratinocytes, and endothelial cells.
916 12021140 Analysis of allele distribution among 93 Latvian IDDM patients and 108 healthy controls showed that allele A5 of MICA is significantly increased in IDDM patients [33/93 (35%)] compared to healthy controls [22/108 (20%)] (OR = 2.15; P = 0.016).
917 12021140 In conclusion, we believe that MICA may play an important role in the etiopathogenesis of IDDM.
918 12021142 Tumor necrosis factor-alpha allele 2 shows an association with insulin-dependent diabetes mellitus in Latvians.
919 12021142 Insulin-dependent diabetes mellitus (IDDM) is one of the most common chronic diseases.
920 12021142 Genes contributing the most for development of IDDM are located on chromosome 6p21.3 in the region called the major histocompatibility complex (MHC).
921 12021142 HLA-DQ8/DR4 and DQ2/DR3 have shown positive association with IDDM, while DQ6 has negative association with IDDM in most Caucasian populations.
922 12021142 The location of the tumor necrosis factor alpha (TNF-alpha) gene in the MHC suggests the role of TNF in the etiology of IDDM as an autoimmune disease.
923 12021142 Ninety-two Latvian IDDM patients corresponding to WHO diagnostic criteria and 107 unrelated age- and sex-matched healthy controls were analyzed for the frequency of TNF-alpha alleles to test the hypothesis that TNF-alpha is associated with IDDM.
924 12021142 We found that TNF-alpha microsatellite allele 2 is associated with IDDM, 29/92 (32%), versus 14/107 (13%) in healthy controls.
925 12021142 The test of the strongest association of the MICA A5 allele and TNF-alpha allele 2 with IDDM showed that both are independently associated with the disease.
926 12114788 An important factor appears to be a genetic predisposition (human leukocyte antigen [HLA] DR3/DR4/DQ8) in connection with as-yet-unknown environmental factors (e.g., viruses).
927 12114788 Autoantibodies, such as islet cell cytoplasmic antibodies (ICA). insulin autoantibodies (IAA) and/or autoantibodies to the gamma-aminobutyric acid (GABA)-synthesizing enzyme glutamic acid carboxylase (GAD), are already detectable in a prediabetic phase, though it is not possible to predict the time of clinical onset.
928 12392510 Intra-MHC sequences including MHC class I chain-related genes (MICAs), D6S273 and D6S2223 are associated with autoimmune diseases in addition to HLA class II.
929 12392510 The MICA-A5.1 allele was increased on both the DR3 and DR4 haplotypes, independent of DQ and DRB1 subtyping, in the patients with Addison's disease compared with the controls.
930 12401728 IL4R encodes a subunit of the interleukin-4 receptor, a molecule critical to T-helper cell development.
931 12401728 In particular, we have identified a specific haplotype that appears to be protective and observed that this protective effect is strongest among individuals not carrying the HLA DR3/DR4 genotype (which confers the strongest genetic risk for type 1 diabetes).
932 12632104 Like the Fas/Fas-L system, the tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) transduces apoptosis in a number of cancers; it is also a clinical candidate for cancer therapy.
933 12632104 Caspase-3 activity and the expression of four types of TRAIL receptor mRNAs were quantitated in tumor and contiguous non-tumor tissues obtained from 27 patients with HCC (HBV-related in 10; HCV-related in 17).
934 12632104 The expression of caspase-3 and TRAIL receptors was also examined immunohistochemically.
935 12632104 A significantly positive correlation was observed between caspase-3 activity and TRAIL-R1, -R2.
936 12632104 Caspase-3 activity and TRAIL-R1, -R2 expression in tumor tissue were significantly lower than those in non-tumor tissue in HBV-related HCC.
937 12632104 Some HCV-related HCC cases, however, demonstrated elevated caspase-3 activity and TRAIL-R1, -R2 expression in tumor tissue.
938 12632104 Both TRAIL-R1 and -R2 showed coefficient correlation with caspase-3 activity, and were strongly associated with apoptosis in human HCC.
939 12632104 Like the Fas/Fas-L system, the tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) transduces apoptosis in a number of cancers; it is also a clinical candidate for cancer therapy.
940 12632104 Caspase-3 activity and the expression of four types of TRAIL receptor mRNAs were quantitated in tumor and contiguous non-tumor tissues obtained from 27 patients with HCC (HBV-related in 10; HCV-related in 17).
941 12632104 The expression of caspase-3 and TRAIL receptors was also examined immunohistochemically.
942 12632104 A significantly positive correlation was observed between caspase-3 activity and TRAIL-R1, -R2.
943 12632104 Caspase-3 activity and TRAIL-R1, -R2 expression in tumor tissue were significantly lower than those in non-tumor tissue in HBV-related HCC.
944 12632104 Some HCV-related HCC cases, however, demonstrated elevated caspase-3 activity and TRAIL-R1, -R2 expression in tumor tissue.
945 12632104 Both TRAIL-R1 and -R2 showed coefficient correlation with caspase-3 activity, and were strongly associated with apoptosis in human HCC.
946 12632104 Like the Fas/Fas-L system, the tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) transduces apoptosis in a number of cancers; it is also a clinical candidate for cancer therapy.
947 12632104 Caspase-3 activity and the expression of four types of TRAIL receptor mRNAs were quantitated in tumor and contiguous non-tumor tissues obtained from 27 patients with HCC (HBV-related in 10; HCV-related in 17).
948 12632104 The expression of caspase-3 and TRAIL receptors was also examined immunohistochemically.
949 12632104 A significantly positive correlation was observed between caspase-3 activity and TRAIL-R1, -R2.
950 12632104 Caspase-3 activity and TRAIL-R1, -R2 expression in tumor tissue were significantly lower than those in non-tumor tissue in HBV-related HCC.
951 12632104 Some HCV-related HCC cases, however, demonstrated elevated caspase-3 activity and TRAIL-R1, -R2 expression in tumor tissue.
952 12632104 Both TRAIL-R1 and -R2 showed coefficient correlation with caspase-3 activity, and were strongly associated with apoptosis in human HCC.
953 12632104 Like the Fas/Fas-L system, the tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) transduces apoptosis in a number of cancers; it is also a clinical candidate for cancer therapy.
954 12632104 Caspase-3 activity and the expression of four types of TRAIL receptor mRNAs were quantitated in tumor and contiguous non-tumor tissues obtained from 27 patients with HCC (HBV-related in 10; HCV-related in 17).
955 12632104 The expression of caspase-3 and TRAIL receptors was also examined immunohistochemically.
956 12632104 A significantly positive correlation was observed between caspase-3 activity and TRAIL-R1, -R2.
957 12632104 Caspase-3 activity and TRAIL-R1, -R2 expression in tumor tissue were significantly lower than those in non-tumor tissue in HBV-related HCC.
958 12632104 Some HCV-related HCC cases, however, demonstrated elevated caspase-3 activity and TRAIL-R1, -R2 expression in tumor tissue.
959 12632104 Both TRAIL-R1 and -R2 showed coefficient correlation with caspase-3 activity, and were strongly associated with apoptosis in human HCC.
960 12691706 Major histocompatibility complex (MHC) class I chain related gene-A (MIC-A) is associated with type 1 diabetes mellitus (T1DM) in other populations.
961 12691706 MIC-A6 conferred protection (OR = 0.098, p(c) = 0.032) in females heterozygous for DR3/DR4.
962 12706109 Of these 10 SNPs, 5 are located between DQB1 and DRB1, confirming the known association with the DR3 and DR4 haplotypes whereas two additional SNPs also reproduced known associations of T1D with DOB and LTA.
963 12706109 In the CD pool also, two earlier described associations were found with SNPs close to DRB1 and MICA.
964 12706864 Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) has been shown to exert potent cytotoxic activity against many tumor cells but not normal cells.
965 12706864 We found that most TRAIL-resistant and -partial resistant clones expressed low levels of DR5, whereas most TRAIL-sensitive clones expressed high levels of Death Receptor (DR5).
966 12706864 However, there were clones with a range of different TRAIL-sensitivities that had similar levels of DR5 expression.
967 12706864 The expression levels of DR4 and the decoy receptors, DcR1 and DcR2, did not correlate with TRAIL sensitivities.
968 12706864 We also compared the subgroups in terms of the expression of Fas-associated death domain protein (FADD), the levels of activation of Receptor Interacting Protein (RIP) and caspases, and cleavage of Poly (ADP-Ribose)Polymerase (PARP).
969 12706864 After treatment with TRAIL, both TRAIL-sensitive and partial resistant clones showed high levels of activation of caspase-3, caspase-8, RIP and PARP.
970 12706864 Relative basal level and induced level of Phosphoprotein over Expressed in Diabetes/Phosphoprotein Enriched in Astrocytes (PED/PEA-15) after TRAIL treatment were compared in the clones.
971 12706864 TRAIL did not change the PED/PEA-15 level in the clones.
972 12706864 In addition, transduction and expression of the dominant negative form of the I-kBalpha gene did not change TRAIL-sensitivities.
973 12706864 Our results showed that the expression levels of DR5, the activation levels of caspase-8, -3 and RIP were critical factors in determining TRAIL-sensitivities in Jurkat cells.
974 12817789 APS-1 is characterized by presence of chronic candidiasis, chronic hypoparathyroidism, Addison's disease.
975 12817789 It is a rare syndrome interesting particularly adult females and associated to a genetic pattern of HLA DR3/DR4.
976 12843130 Patients with PAS had significantly higher frequencies of the human leukocyte antigens A24, A31, B8, B51, B62, DR3, and DR4 (relative risk, 2.35, 2.74, 2.47, 7.17, 2.22, 1.94, and 2.46) vs. controls, and for A31, B15, B52, B55, DR2, DR11, and DR13 (relative risk, 2.51, 7.96, 3.99, 5.36, 4.46, 2.89, and 3.26) vs. type 1 diabetes patients without PAS.
977 12859535 In tacrolimus-converted children, age at transplant, mean and maximum tacrolimus blood levels, and first-year rejection episodes were higher in the post-transplant diabetes group, which also consistently had DR-mismatched transplants and HLA DR3/DR4 haplotypes.
978 12941542 In this study, we analyzed whether antibodies against CBV are increased in DR3, DR4, MICA5, or MICA5.1 positive patients from Linköping (n = 46) and from Swedish population as a whole (n = 298) between the age of 0 and 15 years old.
979 14679079 Frequency of diabetes risk-related alleles DQB1*0302, DQA1*0201, DR4, and DR3 was less prevalent among Lithuanian than among Swedish children with type 1 DM.
980 15277401 In this study, results are reported from testing these associations in three different sample sets: 1) Puerto Rican case and control subjects, 2) Mexican-American simplex families, and 3) high-risk (DR3/DR4) individuals with and without an affected relative.
981 15620463 One function of Lyp is downregulation of T-cell signaling through its interaction with the negative regulatory kinase C-terminal Src tyrosine kinase (Csk).
982 15620463 A single nucleotide polymorphism in the PTPN22 gene, C1858T, encodes products with different Csk binding affinities.
983 15620463 No effects of parent of origin, sex of patient, or human leukocyte antigen genotype (high-risk human leukocyte antigen DR3/DR4 vs non-DR3/DR4) were observed.
984 15699512 In addition, polymorphic MICA in HLA class I interacts with non-polymorphic NKG2D receptor on NK cells.
985 15699512 We have studied, in addition to HLA-DR and -DQ, genes of the innate immune system MICA and KIR in Latvian patients (n = 98) with T1DM and controls (n = 100).
986 15699512 KIR2DL2 and KIR2DS2 were both positively associated.
987 15699512 However, the combined risk of KIR2DL2 and HLA class II genes, HLADR3 (OR = 73.4), DR4 (OR = 66.8), and DR3 and DR4 (OR = 88.3), was higher.
988 16249070 Comparative study of GAD65-specific CD4+ T cells in healthy and type 1 diabetic subjects.
989 16249070 The prevalence of autoreactive CD4+ T cells towards the immunodominant GAD65(555-567) epitope in DR4 healthy and T1D subjects was investigated with class II tetramers.
990 16249070 A slightly higher percentage of diabetic subjects had GAD65(555-567) tetramer-positive T cells upon GAD65(555-567) peptide stimulation on the total CD4+ T-cell populations compared to healthy subjects.
991 16249070 In contrast, three quarters of subjects in both groups had tetramer-positive T cells resulting from stimulation of the CD4+CD25+ regulatory T-cell depleted CD4+ T cells.
992 16249070 These findings suggested that there is no difference in thymic selection of DR4 restricted GAD-reactive T cells amongst healthy and T1D individuals but GAD65(555-567)-reactive T cells have been preferentially activated in diabetic patients.
993 16392185 Despite histological arguments in favor of the mainly mechanical islet disturbances, an increased prevalence of anti-islets auto-antibodies and an increased frequency of HLA DR3/DR4 have been reported in cystic fibrosis population with glucose tolerance troubles.
994 16483918 The "Diabetogenic haplotypes" in Mexicans were DRB1*0301-DQA1*0501-DQB1*0201 (OR = 21.4); DRB1*0405-DQA1-*0301-DQB1*0302 (OR = 44.5) and the same DQA1/DQB1 with DRB1*0404/*0401 conferring lower risk, increasing (OR = 61.3) with an early age at onset and a heterozygote DR3/DR4 genotype.
995 16554480 Human astrocytes are resistant to Fas ligand and tumor necrosis factor-related apoptosis-inducing ligand-induced apoptosis.
996 16554480 Here, we report that calcium/calmodulin-dependent protein kinase II (CaMKII) is constitutively activated in human astrocytes and protects the cells from apoptotic stimulation by Fas agonist.
997 16554480 Once stimulated, Fas recruits Fas-associated death domain and caspase-8 for the assembly of the death-inducing signaling complex (DISC); however, caspase-8 cleavage is inhibited in the DISC.
998 16554480 Inhibition of CaMKII kinase activity inhibits the expression of phosphoprotein enriched astrocytes-15 kDa/phosphoprotein enriched in diabetes (PEA-15/PED) and cellular Fas-associated death domain-like interleukin-1beta-converting enzyme-inhibitory protein (c-FLIP), thus releasing their inhibition of caspase-8 cleavage.
999 16554480 Inhibition of PEA-15/PED or c-FLIP by small interfering RNA sensitizes human astrocytes to Fas-induced apoptosis.
1000 16554480 In contrast, inhibition of CaMKII, PEA-15, or c-FLIP does not affect the sensitivity of human astrocytes to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL).
1001 16554480 TRAIL death receptors (DR4, DR5) are weakly expressed at mRNA, protein, and cell surface levels and thus fail to mediate the assembly of the DISC in human astrocytes.
1002 16554480 Overexpression of DR5 restores TRAIL signaling pathways and sensitizes the human astrocytes to TRAIL-induced apoptosis if CaMKII kinase activity or expression of PEA-15 and c-FLIP is inhibited; the results suggest that CaMKII-mediated pathways prevent TRAIL-induced apoptosis in human astrocytes under conditions in which TRAIL death receptors are upregulated.
1003 16554480 This study has therefore identified the molecular mechanisms that protect normal human astrocytes from apoptosis induced by Fas ligand and TRAIL.
1004 16995591 He had HLA A24, DR4 and DR53 antigens in common with previously reported cases of DM-NS association.
1005 17435869 We report two cases of dizygotic twins with type 1 diabetes onset in their first 9 months of age, with genetic homogeneity (for HLA DR3/DR4 alleles), a history of CMV infection (positive IgG and urinary PCR) and positive antibody anti-GAD (9.6 UI/ml), present only in the second twin.
1006 17554341 SUMO4 M55V polymorphism affects susceptibility to type I diabetes in HLA DR3- and DR4-positive Swedish patients.
1007 17554341 When we stratified our patients and controls based on heterozygosity for HLA-DR3/DR4 and SUMO4 genotypes, we found that presence of SUMO4 GG increased further the relative risk conferred by HLA-DR3/DR4 to TIDM, whereas SUMO4 AA decreased the risk.
1008 17554341 SUMO4 M55V polymorphism affects susceptibility to type I diabetes in HLA DR3- and DR4-positive Swedish patients.
1009 17554341 When we stratified our patients and controls based on heterozygosity for HLA-DR3/DR4 and SUMO4 genotypes, we found that presence of SUMO4 GG increased further the relative risk conferred by HLA-DR3/DR4 to TIDM, whereas SUMO4 AA decreased the risk.
1010 17560173 The HLA-DR3 and DR4 alleles are considered high risk factors for T1D and T(CD40) expansion occurs in T1D subjects carrying HLA DR3 or DR4 haplotypes but, T1D subjects who do not carry either DR3 or DR4 haplotypes still have an expanded percentage of T(CD40) cells.
1011 17569614 Resveratrol induces apoptosis by up-regulating the expression of Bax, Bak, PUMA, Noxa, Bim, p53, TRAIL, TRAIL-R1/DR4 and TRAIL-R2/DR5 and simultaneously down-regulating the expression of Bcl-2, Bcl-XL, Mcl-1 and survivin.
1012 17569614 Resveratrol causes growth arrest at G1 and G1/S phases of cell cycle by inducing the expression of CDK inhibitors p21/WAF1/CIP1 and p27/KIP1.
1013 18486765 Type 1 diabetes risk for human leukocyte antigen (HLA)-DR3 haplotypes depends on genotypic context: association of DPB1 and HLA class I loci among DR3- and DR4-matched Italian patients and controls.
1014 18486765 Patients (n = 133) with high-risk genotypes (DR3/DR3, DR3/DR4, DR4/DR4) were selected from the Lazio (Rome) region of Italy.
1015 18486765 Type 1 diabetes risk for human leukocyte antigen (HLA)-DR3 haplotypes depends on genotypic context: association of DPB1 and HLA class I loci among DR3- and DR4-matched Italian patients and controls.
1016 18486765 Patients (n = 133) with high-risk genotypes (DR3/DR3, DR3/DR4, DR4/DR4) were selected from the Lazio (Rome) region of Italy.
1017 19432816 DR5-mediated DISC controls caspase-8 cleavage and initiation of apoptosis in human glioblastomas.
1018 19432816 TRAIL has four membrane-anchored receptors, death receptor 4/5 (DR4/5) and decoy receptor 1/2 (DcR1/2).
1019 19432816 Of these receptors, only DR5 was expressed consistently in glioblastoma cell lines and tumour tissues, ruling out the role of DcR1/2 in TRAIL resistance.
1020 19432816 Upon TRAIL binding, DR5 was homotrimerized and recruited Fas-associated death domain (FADD) and caspase-8 for the assembly of death-inducing signalling complex (DISC) in the lipid rafts of the plasma membrane.
1021 19432816 In the DISC, caspase-8 was cleaved and initiated apoptosis by cleaving downstream caspases in TRAIL-sensitive glioblastoma cells.
1022 19432816 In TRAIL-resistant cells, however, DR5-mediated DISC was modified by receptor-interacting protein (RIP), cellular FADD-like interleukin-1beta-converting enzyme inhibitory protein (c-FLIP) and phosphoprotein enriched in diabetes or in astrocyte-15 (PED/PEA-15).
1023 19432816 This DISC modification occurred in the non-raft fractions of the plasma membrane and resulted in the inhibition of caspase-8 cleavage and activation of nuclear factor-kappaB (NF-kappaB).
1024 19432816 Treatment of resistant cells with parthenolide, an inhibitor of inhibitor of kappaB (I-kappaB), eliminated TRAIL-induced NF-kappaB activity but not TRAIL resistance.
1025 19432816 In contrast, however, targeting of RIP, c-FLIP or PED/PEA-15 with small interfering RNA (siRNA) led to the redistribution of the DISC from non-rafts to lipid rafts and eliminated the inhibition of caspase-8 cleavage and thereby TRAIL resistance.
1026 19432816 Taken together, this study indicates that the DISC modification by RIP, c-FLIP and PED/PEA-15 is the most upstream event in TRAIL resistance in glioblastomas.
1027 19541464 Autoantibody positivity is often accompanied by a high frequency of DR3 and DR4 alleles, which are classically related to the development of type 1 diabetes and, although not all studies agree on this point, by an immunological imbalance expressed by the behaviour of the lymphocyte subpopulation, which can be seen as diabetic anomalies overlapping with the immunological changes that occur during pregnancy.
1028 19956102 After stratification on the high T1D risk DR3/DR4 genotype, the variant (A) allele of C883A was significantly associated with T1D among non-DR3/DR4 cases (transmission=55.8%, P=0.004; OR=1.26) but was not significantly associated in the DR3/DR4 patient subgroup, replicating the earlier report.
1029 19956102 The reference A allele of intronic SNP rs17653687 was modestly associated with T1D in both DR3/DR4 strata (transmission=54.4% in DR3/DR4; P=0.03; transmission=52.9% in non-DR3/DR4; P=0.03).
1030 19956102 After stratification on the high T1D risk DR3/DR4 genotype, the variant (A) allele of C883A was significantly associated with T1D among non-DR3/DR4 cases (transmission=55.8%, P=0.004; OR=1.26) but was not significantly associated in the DR3/DR4 patient subgroup, replicating the earlier report.
1031 19956102 The reference A allele of intronic SNP rs17653687 was modestly associated with T1D in both DR3/DR4 strata (transmission=54.4% in DR3/DR4; P=0.03; transmission=52.9% in non-DR3/DR4; P=0.03).
1032 20054343 Using the transmission disequilibrium test, we compared the proportion of SNP alleles transmitted from within the high-risk DR3 and DR4 haplotypes to affected offspring.
1033 20451496 TRAIL upregulates decoy receptor 1 and mediates resistance to apoptosis in insulin-secreting INS-1 cells.
1034 20451496 TRAIL/Apo2L (tumor necrosis factor-related apoptosis-inducing ligand) is a multifunctional protein regulating the homeostasis of the immune system, infection, autoimmune diseases, and apoptosis.
1035 20451496 A previous study found that TRAIL did not have significant cytotoxic effects on the insulin-secreting pancreatic beta cell line, INS-1.
1036 20451496 TRAIL treatment showed NF-kappaB translocation to the nucleus in TRAIL-resistant INS-1 cells, and TRAIL-induced NF-kappaB activation was preceded by IkappaBalpha degradation.
1037 20451496 A pharmacological inhibitor of NF-kappaB, Bay 11-7082, blocked TRAIL-induced NF-kappaB translocation to the nucleus and IkappaBalpha degradation.
1038 20451496 Four related receptors bind TRAIL: two death receptors (DR4 and DR5) that promote apoptosis, and two decoy receptors (DcR1 and DcR2) that act as dominant-negative inhibitors of TRAIL-mediated apoptosis.
1039 20451496 In the present study, TRAIL treatment in INS-1 cells upregulated DcR1 and downregulated DR5 without altering the expression of DcR2 and DR4.
1040 20451496 The resistance to apoptosis in INS-1 cells might therefore, be a consequence of DcR1 upregulation and DR5 downregulation, and the transcription factor, NF-kappaB, could regulate the sensitivity of cells to TRAIL by controlling the ratio of decoy to death receptors.
1041 20451496 Thus, TRAIL may play an important role in the survival of pancreatic beta cells by regulating receptor expression in an NF-kappaB-dependent manner.
1042 20451496 TRAIL upregulates decoy receptor 1 and mediates resistance to apoptosis in insulin-secreting INS-1 cells.
1043 20451496 TRAIL/Apo2L (tumor necrosis factor-related apoptosis-inducing ligand) is a multifunctional protein regulating the homeostasis of the immune system, infection, autoimmune diseases, and apoptosis.
1044 20451496 A previous study found that TRAIL did not have significant cytotoxic effects on the insulin-secreting pancreatic beta cell line, INS-1.
1045 20451496 TRAIL treatment showed NF-kappaB translocation to the nucleus in TRAIL-resistant INS-1 cells, and TRAIL-induced NF-kappaB activation was preceded by IkappaBalpha degradation.
1046 20451496 A pharmacological inhibitor of NF-kappaB, Bay 11-7082, blocked TRAIL-induced NF-kappaB translocation to the nucleus and IkappaBalpha degradation.
1047 20451496 Four related receptors bind TRAIL: two death receptors (DR4 and DR5) that promote apoptosis, and two decoy receptors (DcR1 and DcR2) that act as dominant-negative inhibitors of TRAIL-mediated apoptosis.
1048 20451496 In the present study, TRAIL treatment in INS-1 cells upregulated DcR1 and downregulated DR5 without altering the expression of DcR2 and DR4.
1049 20451496 The resistance to apoptosis in INS-1 cells might therefore, be a consequence of DcR1 upregulation and DR5 downregulation, and the transcription factor, NF-kappaB, could regulate the sensitivity of cells to TRAIL by controlling the ratio of decoy to death receptors.
1050 20451496 Thus, TRAIL may play an important role in the survival of pancreatic beta cells by regulating receptor expression in an NF-kappaB-dependent manner.
1051 20580654 The genotype 2DL1/C2+ was also more common in controls (p = 0.001), as well as haplotype association KIR2DL2/DR3/DR4+ and the combination with only DR3+ (p < 0.001; p < 0.001).
1052 20580654 The maximum protection was seen when KIR2DL2/DR3-were absent when the combination of KIR2DL1/C2+ were present (p < 0.001) and the maximum risk was observed when KIR2DL2/DR3/DR4+ were present in the absence of KIR2DL1/C2- (p = 0.005).
1053 20580654 Our results confirmed the association of the KIR2DL2/DR3 increasing risk for T1D and suggest a protective role of KIR2DL1/C2.
1054 20580654 The genotype 2DL1/C2+ was also more common in controls (p = 0.001), as well as haplotype association KIR2DL2/DR3/DR4+ and the combination with only DR3+ (p < 0.001; p < 0.001).
1055 20580654 The maximum protection was seen when KIR2DL2/DR3-were absent when the combination of KIR2DL1/C2+ were present (p < 0.001) and the maximum risk was observed when KIR2DL2/DR3/DR4+ were present in the absence of KIR2DL1/C2- (p = 0.005).
1056 20580654 Our results confirmed the association of the KIR2DL2/DR3 increasing risk for T1D and suggest a protective role of KIR2DL1/C2.
1057 22385239 In this study we showed that peripheral sera cytokines [interleukin (IL)-12, IL-6, II-1β, tumour necrosis factor (TNF)-α, IL-10] and chemokines (CXCL10, CXCL8, CXCL9, CCL2) measured were significantly higher in newly diagnosed T1AD patients when compared to healthy controls (P < 0·001).
1058 22385239 Among T1AD, we found a positive correlation between CXCL10 and CCL-2 (r = 0·80; P = 0·000), IL-8 and TNF-α (r = 0·60; P = 0·000); IL-8 and IL-12 (r = 0·57; P = 0·001) and TNF-α and IL-12 (r = 0·93; P = 0·000).
1059 22385239 Glutamic acid decarboxylase-65 (GAD-65) autoantibodies (GADA) were associated negatively with CXCL10 (r = -0·45; P = 0·011) and CCL2 (r = -0·65; P = 0·000), while IA-2A showed a negative correlation with IL-10 (r = -0·38; P = 0·027).
1060 22385239 Human leucocyte antigen (HLA) DR3, DR4 or DR3/DR4 and PTPN22 polymorphism did not show any association with pancreatic islet cell antibodies or cytokines studied.
1061 23480181 The PTPN22 1858T allele but not variants in the proximal promoter region of IL-21 gene is associated with the susceptibility to type 1 diabetes and the presence of autoantibodies in a Brazilian cohort.
1062 23480181 Interleukin (IL)-21 and protein tyrosine phosphatase non-receptor 22 (PTPN22) regulate lymphocyte function and have been implicated in the pathogenesis of autoimmune diabetes.
1063 23480181 We sequenced the proximal promoter of the IL-21 gene for the first time and analysed the PTPN22 1858T polymorphism in type 1A diabetes (T1AD) patients and healthy controls (HC).
1064 23480181 We also evaluated human leucocyte antigen (HLA) DR3/DR4 alleles.
1065 23480181 The frequencies of glutamic acid decarboxylase (GAD65), tyrosine phosphatase-like protein (IA)-2, anti-nuclear antibody (ANA), thyroid peroxidase (TPO), thyroglobulin (TG), thyrotrophin receptor autoantibody (TRAb), anti-smooth muscle (ASM) and 21-hydroxylase (21-OH) autoantibodies were higher in T1AD patients than in HC.
1066 23480181 The PTPN22 1858T allele was associated with an increased risk for developing T1AD [odds ratio (OR) = 1·94; P < 0·001], particularly in patients of European ancestry, and with a higher frequency of GAD65 and TG autoantibodies.
1067 23480181 In conclusion, only PTPN22 C1858T polymorphism and HLA-DR3 and/or DR4 alleles, but not allelic variants in the 5'-proximal region of the IL-21 gene were associated with T1AD risk.
1068 23480181 The C1858T PTPN22 polymorphism was also associated with a higher frequency of GAD65 and TG autoantibodies.