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12086958
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Recent studies from our laboratory have shown that insulin induces relaxation of vascular smooth muscle cells (VSMCs) via stimulation of myosin phosphatase and inhibition of Rho kinase activity.
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12086958
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In this study, we examined the mechanism whereby insulin inhibits Rho signaling and its impact on actin cytoskeleton organization.
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12086958
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Incubation of confluent serum-starved VSMCs with thrombin or phenylephrine (PE) caused a rapid increase in glutathione S-transferase-Rhotekin-Rho binding domain-associated RhoA, Rho kinase activation, and actin cytoskeleton organization, which was blocked by preincubation with insulin.
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12086958
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Preexposure to N(G)-monomethyl L-arginine acetate (L-NMMA), a nitric oxide synthase inhibitor, and Rp-8 CPT-cyclic guanosine monophosphate (RpcGMP), a cyclic guanosine monophosphate (cGMP) antagonist, attenuated the inhibitory effect of insulin on RhoA activation and restored thrombin-induced Rho kinase activation, and site-specific phosphorylation of the myosin-bound regulatory subunit (MBS(Thr695)) of myosin-bound phosphatase (MBP), and caused actin fiber reorganization.
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12086958
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In contrast, 8-bromo-cGMP, a cGMP agonist, mimicked the inhibitory effects of insulin and abolished thrombin-mediated Rho activation.
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12086958
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We conclude that insulin may inhibit Rho signaling by affecting posttranslational modification of RhoA via nitric oxide/cGMP signaling pathway to cause MBP activation, actin cytoskeletal disorganization, and vasodilation.
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7 |
15042845
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With these families, linkage to T1DM was demonstrated for CTLA4 (IDDM12, 2q32.1-q33), which codes for a T-cell surface antigen, and PDCD2 (IDDM8, 6q25-q27), which is homologous to the mouse programmed cell death activator gene.
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15042845
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With polymorphic microsatellites, regions 3q21-q25 (IDDM9) and 10p12.2 (IDDM10) were also linked to T1DM.
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15042845
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Diabetic polyneuropathy (DPN) proved to be associated with single-nucleotide polymorphisms Ala(-9)Val (SOD2), Arg213Gly (SOD3), and T(-262)C (CAT) and with a polymorphic microsatellite of the NOS2 promoter.
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15042845
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However, the association was observed for the insertion/deletion (I/D) polymorphism of ACE and the ecNOS34a/4b polymorphism of NOS3, two genes involved in controlling vascular tonicity, and for the I/D polymorphism of APOB and the epsilon 2/epsilon 3/epsilon 4 polymorphism of APOE, two genes involved in lipid transport.
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15848047
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This is within the region which harbours a cluster of three genes encoding proteasome subunit beta 1 (PMSB1), TATA-box binding protein (TBP) and a homologue of mouse programming cell death activator 2 (PDCD2).
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12 |
15848047
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G/A1180 dimorphism and two other SNPs, C/T771 TBP and G/T(-271) PDCD2, were shown to share three common haplotypes, two of which (A-T-G and A-T-T) have been associated with higher development risk of T1D.
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15848047
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These findings suggest that the PDCD2 gene is a likely susceptibility gene for T1D within IDDM8.
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14 |
15848047
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This is within the region which harbours a cluster of three genes encoding proteasome subunit beta 1 (PMSB1), TATA-box binding protein (TBP) and a homologue of mouse programming cell death activator 2 (PDCD2).
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15 |
15848047
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G/A1180 dimorphism and two other SNPs, C/T771 TBP and G/T(-271) PDCD2, were shown to share three common haplotypes, two of which (A-T-G and A-T-T) have been associated with higher development risk of T1D.
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16 |
15848047
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These findings suggest that the PDCD2 gene is a likely susceptibility gene for T1D within IDDM8.
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17 |
15848047
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This is within the region which harbours a cluster of three genes encoding proteasome subunit beta 1 (PMSB1), TATA-box binding protein (TBP) and a homologue of mouse programming cell death activator 2 (PDCD2).
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18 |
15848047
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G/A1180 dimorphism and two other SNPs, C/T771 TBP and G/T(-271) PDCD2, were shown to share three common haplotypes, two of which (A-T-G and A-T-T) have been associated with higher development risk of T1D.
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19 |
15848047
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These findings suggest that the PDCD2 gene is a likely susceptibility gene for T1D within IDDM8.
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15850778
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Using a much larger sample of T1D families than those studied by others, and by extensive re-sequencing of nine other genes in the proximity, in which we identified 279 polymorphisms, 83 of which were genotyped in up to 725 T1D multiplex and simplex families, we obtained no evidence for association of the TBP CAG/CAA (glutamine) microsatellite repeat sequence with disease, or for nine other genes, PDCD2, PSMB1, KIAA1838, DLL1, dJ894D12.4, FLJ25454, FLJ13162, FLJ11152, PHF10 and CCR6.
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16945141
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The region contains a number of potential candidate genes, including programmed cell death 2 (PDCD2), the proteosome subunit beta type 1 (PSMB1), delta-like ligand 1 (DLL-1) and TATA box-binding protein (TBP) amongst others.
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