# |
PMID |
Sentence |
1 |
12224046
|
An angiotensin II-receptor blocker has been shown to prevent depletion in glomerular nephrin expression in the diabetic kidney.
|
2 |
12224046
|
Furthermore, it is suggested that the antiproteinuric effects of inhibition of the renin-angiotensin system may partly relate to the effects of these agents on nephrin expression.
|
3 |
12224046
|
An angiotensin II-receptor blocker has been shown to prevent depletion in glomerular nephrin expression in the diabetic kidney.
|
4 |
12224046
|
Furthermore, it is suggested that the antiproteinuric effects of inhibition of the renin-angiotensin system may partly relate to the effects of these agents on nephrin expression.
|
5 |
12436341
|
Proteinuria and the expression of the podocyte slit diaphragm protein, nephrin, in diabetic nephropathy: effects of angiotensin converting enzyme inhibition.
|
6 |
12544433
|
Nephrin: a pivotal molecule in proteinuria influenced by angiotensin II.
|
7 |
12663475
|
Nephrin expression is reduced in human diabetic nephropathy: evidence for a distinct role for glycated albumin and angiotensin II.
|
8 |
12663475
|
In vitro studies on human cultured podocytes demonstrated that glycated albumin and angiotensin II reduced nephrin expression.
|
9 |
12663475
|
Glycated albumin inhibited nephrin synthesis through the engagement of receptor for advanced glycation end products, whereas angiotensin II acted on cytoskeleton redistribution, inducing the shedding of nephrin.
|
10 |
12663475
|
This study indicates that the alteration in nephrin expression is an early event in proteinuric patients with diabetes and suggests that glycated albumin and angiotensin II contribute to nephrin downregulation.
|
11 |
12663475
|
Nephrin expression is reduced in human diabetic nephropathy: evidence for a distinct role for glycated albumin and angiotensin II.
|
12 |
12663475
|
In vitro studies on human cultured podocytes demonstrated that glycated albumin and angiotensin II reduced nephrin expression.
|
13 |
12663475
|
Glycated albumin inhibited nephrin synthesis through the engagement of receptor for advanced glycation end products, whereas angiotensin II acted on cytoskeleton redistribution, inducing the shedding of nephrin.
|
14 |
12663475
|
This study indicates that the alteration in nephrin expression is an early event in proteinuric patients with diabetes and suggests that glycated albumin and angiotensin II contribute to nephrin downregulation.
|
15 |
12663475
|
Nephrin expression is reduced in human diabetic nephropathy: evidence for a distinct role for glycated albumin and angiotensin II.
|
16 |
12663475
|
In vitro studies on human cultured podocytes demonstrated that glycated albumin and angiotensin II reduced nephrin expression.
|
17 |
12663475
|
Glycated albumin inhibited nephrin synthesis through the engagement of receptor for advanced glycation end products, whereas angiotensin II acted on cytoskeleton redistribution, inducing the shedding of nephrin.
|
18 |
12663475
|
This study indicates that the alteration in nephrin expression is an early event in proteinuric patients with diabetes and suggests that glycated albumin and angiotensin II contribute to nephrin downregulation.
|
19 |
12663475
|
Nephrin expression is reduced in human diabetic nephropathy: evidence for a distinct role for glycated albumin and angiotensin II.
|
20 |
12663475
|
In vitro studies on human cultured podocytes demonstrated that glycated albumin and angiotensin II reduced nephrin expression.
|
21 |
12663475
|
Glycated albumin inhibited nephrin synthesis through the engagement of receptor for advanced glycation end products, whereas angiotensin II acted on cytoskeleton redistribution, inducing the shedding of nephrin.
|
22 |
12663475
|
This study indicates that the alteration in nephrin expression is an early event in proteinuric patients with diabetes and suggests that glycated albumin and angiotensin II contribute to nephrin downregulation.
|
23 |
12819328
|
Regions examined were at human chromosome 10p,10q (orthologous to the rat renal susceptibility Rf-1 locus), and at NPHS1 (nephrin), CD2AP, Wilms tumor (WT1), and NPHS2 (podocin) loci.
|
24 |
12819328
|
We have excluded linkage with candidate regions for nephrin, CD2AP, WT1, and podocin in this sample.
|
25 |
12819328
|
Regions examined were at human chromosome 10p,10q (orthologous to the rat renal susceptibility Rf-1 locus), and at NPHS1 (nephrin), CD2AP, Wilms tumor (WT1), and NPHS2 (podocin) loci.
|
26 |
12819328
|
We have excluded linkage with candidate regions for nephrin, CD2AP, WT1, and podocin in this sample.
|
27 |
15220208
|
Tumstatin peptide is an angiogenesis inhibitor derived from type IV collagen and inhibits in vivo neovascularization induced by vascular endothelial growth factor (VEGF), one of the mediators of glomerular hypertrophy in diabetic nephropathy.
|
28 |
15220208
|
Glomerular matrix expansion, the increase of total glomerular cell number and glomerular endothelial cells (CD31 positive), and monocyte/macrophage accumulation was inhibited by tumstatin peptide.
|
29 |
15220208
|
Increase in renal expression of VEGF, flk-1, and angiopoietin-2, an antagonist of angiopoietin-1, was inhibited by tumstatin treatment in diabetic mice.
|
30 |
15220208
|
Alteration of glomerular nephrin expression, a podocyte protein crucial for maintaining glomerular filtration barrier, was recovered by tumstatin in diabetic mice.
|
31 |
15509792
|
Therefore, to investigate the mechanism of Wt1 R394W-induced renal failure, the expression of genes whose deletion leads to glomerulosclerosis (NPHS1, NPHS2, and CD2AP) was quantitated.
|
32 |
15509792
|
In mutant kidneys, NPHS1 and NPHS2 were only moderately downregulated (25 to 30%) at birth but not at 2 or 4 months.
|
33 |
15509792
|
Two other genes implicated in glomerulosclerosis, TGFB1 and IGF1, were upregulated at 2 months and at 2 and 4 months, respectively.
|
34 |
15509792
|
However, the data do suggest that Wt1 R394W-induced glomerulosclerosis may be independent of downregulation of the genes for NPHS1, NPHS2, CD2AP, and podocalyxin and may involve other genes yet to be implicated in renal failure.
|
35 |
15509792
|
Therefore, to investigate the mechanism of Wt1 R394W-induced renal failure, the expression of genes whose deletion leads to glomerulosclerosis (NPHS1, NPHS2, and CD2AP) was quantitated.
|
36 |
15509792
|
In mutant kidneys, NPHS1 and NPHS2 were only moderately downregulated (25 to 30%) at birth but not at 2 or 4 months.
|
37 |
15509792
|
Two other genes implicated in glomerulosclerosis, TGFB1 and IGF1, were upregulated at 2 months and at 2 and 4 months, respectively.
|
38 |
15509792
|
However, the data do suggest that Wt1 R394W-induced glomerulosclerosis may be independent of downregulation of the genes for NPHS1, NPHS2, CD2AP, and podocalyxin and may involve other genes yet to be implicated in renal failure.
|
39 |
15509792
|
Therefore, to investigate the mechanism of Wt1 R394W-induced renal failure, the expression of genes whose deletion leads to glomerulosclerosis (NPHS1, NPHS2, and CD2AP) was quantitated.
|
40 |
15509792
|
In mutant kidneys, NPHS1 and NPHS2 were only moderately downregulated (25 to 30%) at birth but not at 2 or 4 months.
|
41 |
15509792
|
Two other genes implicated in glomerulosclerosis, TGFB1 and IGF1, were upregulated at 2 months and at 2 and 4 months, respectively.
|
42 |
15509792
|
However, the data do suggest that Wt1 R394W-induced glomerulosclerosis may be independent of downregulation of the genes for NPHS1, NPHS2, CD2AP, and podocalyxin and may involve other genes yet to be implicated in renal failure.
|
43 |
15613060
|
ACE inhibitors improve nephrin expression in Zucker rats with glomerulosclerosis.
|
44 |
15616033
|
TERalb (%/h) was similar in normoalbuminuric and microalbuminuric group 1, 2, and 3 diabetic patients (medians: 14.1 vs. 14.4 vs. 15.7 vs. 14.9, respectively) (ANOVA, NS). mRNA expression of slit diaphragm proteins CD2AP, FAT, Actn 4, NPHS1, and NPHS2 was higher in normoalbuminuric patients than in microalbuminuric patients (groups 1, 2, and 3) (ANOVA, P < 0.001).
|
45 |
15918105
|
Agents that inhibit the renin-angiotensin system, but not other agents that reduce proteinuria, restore nephrin expression and prevent the structural changes seen in the podocyte in diabetes.
|
46 |
15919782
|
A key mediator of nephrin suppression is angiotensin II (ANG II), which can activate other cytokine pathways such as transforming growth factor-beta (TGF-beta) and vascular endothelial growth factor (VEGF) systems.
|
47 |
16146787
|
We hypothesize that chronically elevated intrarenal angiotensin II (ANG II) down-regulates nephrin, a key slit-pore protein and up-regulates fibrogenic molecule transforming growth factor (TGFbeta1) and thus result in progression of nephropathy in type 2 diabetes.
|
48 |
16146787
|
Untreated or angiotensin converting enzyme (ACE) inhibitor, captopril, treated ZO and control Lean (ZL) rats were used to measure intrarenal levels of ANG II, glomerular nephrin, TGFbeta1, collagen and fibronectin with age using radioimmunoassay, RT-PCR and immunoblot techniques.
|
49 |
16146787
|
Captopril treatment prevented increase in intrarenal ANG II, and reversed expression of nephrin, TGFbeta1, collagen and fibronectin.
|
50 |
16146787
|
We conclude that in this model of type 2 diabetic nephropathy, chronically elevated intrarenal ANG II causes proteinuria via decrease in nephrin and glomerulosclerosis via TGFbeta1 mediated increase in matrix component.
|
51 |
16146787
|
We hypothesize that chronically elevated intrarenal angiotensin II (ANG II) down-regulates nephrin, a key slit-pore protein and up-regulates fibrogenic molecule transforming growth factor (TGFbeta1) and thus result in progression of nephropathy in type 2 diabetes.
|
52 |
16146787
|
Untreated or angiotensin converting enzyme (ACE) inhibitor, captopril, treated ZO and control Lean (ZL) rats were used to measure intrarenal levels of ANG II, glomerular nephrin, TGFbeta1, collagen and fibronectin with age using radioimmunoassay, RT-PCR and immunoblot techniques.
|
53 |
16146787
|
Captopril treatment prevented increase in intrarenal ANG II, and reversed expression of nephrin, TGFbeta1, collagen and fibronectin.
|
54 |
16146787
|
We conclude that in this model of type 2 diabetic nephropathy, chronically elevated intrarenal ANG II causes proteinuria via decrease in nephrin and glomerulosclerosis via TGFbeta1 mediated increase in matrix component.
|
55 |
16146787
|
We hypothesize that chronically elevated intrarenal angiotensin II (ANG II) down-regulates nephrin, a key slit-pore protein and up-regulates fibrogenic molecule transforming growth factor (TGFbeta1) and thus result in progression of nephropathy in type 2 diabetes.
|
56 |
16146787
|
Untreated or angiotensin converting enzyme (ACE) inhibitor, captopril, treated ZO and control Lean (ZL) rats were used to measure intrarenal levels of ANG II, glomerular nephrin, TGFbeta1, collagen and fibronectin with age using radioimmunoassay, RT-PCR and immunoblot techniques.
|
57 |
16146787
|
Captopril treatment prevented increase in intrarenal ANG II, and reversed expression of nephrin, TGFbeta1, collagen and fibronectin.
|
58 |
16146787
|
We conclude that in this model of type 2 diabetic nephropathy, chronically elevated intrarenal ANG II causes proteinuria via decrease in nephrin and glomerulosclerosis via TGFbeta1 mediated increase in matrix component.
|
59 |
16146787
|
We hypothesize that chronically elevated intrarenal angiotensin II (ANG II) down-regulates nephrin, a key slit-pore protein and up-regulates fibrogenic molecule transforming growth factor (TGFbeta1) and thus result in progression of nephropathy in type 2 diabetes.
|
60 |
16146787
|
Untreated or angiotensin converting enzyme (ACE) inhibitor, captopril, treated ZO and control Lean (ZL) rats were used to measure intrarenal levels of ANG II, glomerular nephrin, TGFbeta1, collagen and fibronectin with age using radioimmunoassay, RT-PCR and immunoblot techniques.
|
61 |
16146787
|
Captopril treatment prevented increase in intrarenal ANG II, and reversed expression of nephrin, TGFbeta1, collagen and fibronectin.
|
62 |
16146787
|
We conclude that in this model of type 2 diabetic nephropathy, chronically elevated intrarenal ANG II causes proteinuria via decrease in nephrin and glomerulosclerosis via TGFbeta1 mediated increase in matrix component.
|
63 |
16164632
|
Evidence linking glycated albumin to altered glomerular nephrin and VEGF expression, proteinuria, and diabetic nephropathy.
|
64 |
16177004
|
Galectin-9 (Gal-9) was identified previously and demonstrated to have apoptotic potential to thymocytes in mice and activated CD8(+) T cells in nephrotoxic serum nephritis model.
|
65 |
16177004
|
Gal-9 reduced glomerular expression of TGF-beta1 and the number of p27(Kip1)- and p21(Cip1)-positive cells in glomeruli.
|
66 |
16177004
|
Double staining with nephrin and type IV collagen revealed that podocytes were mainly positive for p27(Kip1).
|
67 |
16177004
|
Gal-9 reversed the high-glucose-mediated upregulation of p27(Kip1) and p21(Cip1) and inhibited cell-cycle-dependent hypertrophy, i.e., reduced [(3)H]proline incorporation.
|
68 |
16186390
|
Here, we examine the effect of endostatin peptide, a potent inhibitor of angiogenesis derived from type XVIII collagen, in preventing progression in the type 1 diabetic nephropathy mouse model.
|
69 |
16186390
|
Glomerular mesangial matrix expansion, the increase of glomerular type IV collagen, endothelial area (CD31(+)), and F4/80(+) monocyte/macrophage accumulation were significantly inhibited by endostatin peptide.
|
70 |
16186390
|
Increase in the renal expression of VEGF-A, flk-1, Ang-2, an antagonist of angiopoietin-1, transforming growth factor-beta1, interleukin-6, and monocyte chemoattractant protein-1 was inhibited by endostatin peptide in diabetic mice.
|
71 |
16186390
|
Decrease of nephrin mRNA and protein in diabetic mice was suppressed by treatment with endostatin peptide.
|
72 |
16186390
|
Endogenous renal levels of endostatin were decreased in endostatin peptide-treated groups in parallel with VEGF-A.
|
73 |
16332931
|
The increase in UAE in the diabetes group was associated with a significant reduction in the expression of slit diaphragm-associated molecules compared with control (nephrin; P < 0.05 and podocin; P < 0.005) that was reversed by ATL146e treatment.
|
74 |
16332931
|
Diabetes led to an increase in urinary excretion of monocyte chemoattractant protein-1 (705% of control), TNF-alpha (1,586% of control), IFN-gamma (298% of control), kidney fibronectin mRNA (457% of control), and glomerular infiltration of macrophages (764% of control), effects significantly reduced by ATL146e treatment.
|
75 |
16710349
|
No change from base line values was observed as for hs-C-reactive protein and interleukin-6.
|
76 |
16710349
|
Real-time polymerase chain reaction measurement of mRNA SD proteins (CD2AP, FAT, Actn 4, NPHS1, and NPHS2) significantly increased in kidney biopsy specimens after simvastatin, but not cholestyramine treatment.
|
77 |
16899516
|
Transgenic expression of BMP-7 in glomerular podocytes and proximal tubules prevents podocyte dropout and reductions in nephrin levels in diabetic mice.
|
78 |
16899516
|
Maintenance of BMP-7 also reduces glomerular fibrosis and interstitial collagen accumulation as well as collagen I and fibronectin expression.
|
79 |
16955103
|
Nephrin loss in experimental diabetic nephropathy is prevented by deletion of protein kinase C alpha signaling in-vivo.
|
80 |
16955103
|
In PKCalpha-/- mice, hyperglycemia-induced downregulation of nephrin was prevented.
|
81 |
16955103
|
In addition, the nephrin messenger RNA expression was also reduced in hyperglycemic wild-type mice but remained unaltered in PKCalpha-/- mice.
|
82 |
16955103
|
We postulate that the underlying mechanism of the hyperglycemia-induced regulation of various proteins of the glomerular filtration barrier is a PKCalpha-dependent regulation of the Wilms' Tumor Suppressor (WT1) which previously has been shown to act as a direct transcription factor on the nephrin promoter.
|
83 |
16955103
|
Our data suggest that PKCalpha activation may be an important intracellular signaling pathway in the regulation of nephrin expression and glomerular albumin permeability in the diabetic state.
|
84 |
16955103
|
Nephrin loss in experimental diabetic nephropathy is prevented by deletion of protein kinase C alpha signaling in-vivo.
|
85 |
16955103
|
In PKCalpha-/- mice, hyperglycemia-induced downregulation of nephrin was prevented.
|
86 |
16955103
|
In addition, the nephrin messenger RNA expression was also reduced in hyperglycemic wild-type mice but remained unaltered in PKCalpha-/- mice.
|
87 |
16955103
|
We postulate that the underlying mechanism of the hyperglycemia-induced regulation of various proteins of the glomerular filtration barrier is a PKCalpha-dependent regulation of the Wilms' Tumor Suppressor (WT1) which previously has been shown to act as a direct transcription factor on the nephrin promoter.
|
88 |
16955103
|
Our data suggest that PKCalpha activation may be an important intracellular signaling pathway in the regulation of nephrin expression and glomerular albumin permeability in the diabetic state.
|
89 |
16955103
|
Nephrin loss in experimental diabetic nephropathy is prevented by deletion of protein kinase C alpha signaling in-vivo.
|
90 |
16955103
|
In PKCalpha-/- mice, hyperglycemia-induced downregulation of nephrin was prevented.
|
91 |
16955103
|
In addition, the nephrin messenger RNA expression was also reduced in hyperglycemic wild-type mice but remained unaltered in PKCalpha-/- mice.
|
92 |
16955103
|
We postulate that the underlying mechanism of the hyperglycemia-induced regulation of various proteins of the glomerular filtration barrier is a PKCalpha-dependent regulation of the Wilms' Tumor Suppressor (WT1) which previously has been shown to act as a direct transcription factor on the nephrin promoter.
|
93 |
16955103
|
Our data suggest that PKCalpha activation may be an important intracellular signaling pathway in the regulation of nephrin expression and glomerular albumin permeability in the diabetic state.
|
94 |
16955103
|
Nephrin loss in experimental diabetic nephropathy is prevented by deletion of protein kinase C alpha signaling in-vivo.
|
95 |
16955103
|
In PKCalpha-/- mice, hyperglycemia-induced downregulation of nephrin was prevented.
|
96 |
16955103
|
In addition, the nephrin messenger RNA expression was also reduced in hyperglycemic wild-type mice but remained unaltered in PKCalpha-/- mice.
|
97 |
16955103
|
We postulate that the underlying mechanism of the hyperglycemia-induced regulation of various proteins of the glomerular filtration barrier is a PKCalpha-dependent regulation of the Wilms' Tumor Suppressor (WT1) which previously has been shown to act as a direct transcription factor on the nephrin promoter.
|
98 |
16955103
|
Our data suggest that PKCalpha activation may be an important intracellular signaling pathway in the regulation of nephrin expression and glomerular albumin permeability in the diabetic state.
|
99 |
16955103
|
Nephrin loss in experimental diabetic nephropathy is prevented by deletion of protein kinase C alpha signaling in-vivo.
|
100 |
16955103
|
In PKCalpha-/- mice, hyperglycemia-induced downregulation of nephrin was prevented.
|
101 |
16955103
|
In addition, the nephrin messenger RNA expression was also reduced in hyperglycemic wild-type mice but remained unaltered in PKCalpha-/- mice.
|
102 |
16955103
|
We postulate that the underlying mechanism of the hyperglycemia-induced regulation of various proteins of the glomerular filtration barrier is a PKCalpha-dependent regulation of the Wilms' Tumor Suppressor (WT1) which previously has been shown to act as a direct transcription factor on the nephrin promoter.
|
103 |
16955103
|
Our data suggest that PKCalpha activation may be an important intracellular signaling pathway in the regulation of nephrin expression and glomerular albumin permeability in the diabetic state.
|
104 |
17018845
|
Inhibiting albumin glycation attenuates dysregulation of VEGFR-1 and collagen IV subchain production and the development of renal insufficiency.
|
105 |
17018845
|
Glomerular cells in culture respond to albumin containing Amadori glucose adducts (the principal serum glycated protein), with activation of protein kinase C-beta(1), increased expression of transforming growth factor (TGF)-beta1, the TGF-beta type II signaling receptor, and the extracellular matrix proteins alpha(1)(IV) collagen and fibronectin and with decreased production of the podocyte protein nephrin.
|
106 |
17018845
|
Decreasing the burden of glycated albumin in diabetic db/db mice significantly reduces glomerular overexpression of TGF-beta1 mRNA, restores glomerular nephrin immunofluorescence, and lessens proteinuria, mesangial expansion, renal extracellular matrix protein production, and increased glomerular vascular endothelial growth factor (VEGF) immunostaining.
|
107 |
17018845
|
In the present study, db/db mice were treated with a small molecule, designated 23CPPA, that inhibits the nonenzymatic condensation of glucose with the albumin protein to evaluate whether increased glycated albumin influences the production of VEGF receptors (VEGFRs) and type IV collagen subchains and ameliorates the development of renal insufficiency.
|
108 |
17018845
|
Renal levels of VEGF and VEGFR-1 proteins and serum creatinine concentrations were significantly higher and renal levels of alpha(3)(IV) collagen and nephrin proteins and endogenous creatinine clearance values were significantly lower in control diabetic than in age-matched nondiabetic (db/m) mice.
|
109 |
17018845
|
Inhibiting albumin glycation attenuates dysregulation of VEGFR-1 and collagen IV subchain production and the development of renal insufficiency.
|
110 |
17018845
|
Glomerular cells in culture respond to albumin containing Amadori glucose adducts (the principal serum glycated protein), with activation of protein kinase C-beta(1), increased expression of transforming growth factor (TGF)-beta1, the TGF-beta type II signaling receptor, and the extracellular matrix proteins alpha(1)(IV) collagen and fibronectin and with decreased production of the podocyte protein nephrin.
|
111 |
17018845
|
Decreasing the burden of glycated albumin in diabetic db/db mice significantly reduces glomerular overexpression of TGF-beta1 mRNA, restores glomerular nephrin immunofluorescence, and lessens proteinuria, mesangial expansion, renal extracellular matrix protein production, and increased glomerular vascular endothelial growth factor (VEGF) immunostaining.
|
112 |
17018845
|
In the present study, db/db mice were treated with a small molecule, designated 23CPPA, that inhibits the nonenzymatic condensation of glucose with the albumin protein to evaluate whether increased glycated albumin influences the production of VEGF receptors (VEGFRs) and type IV collagen subchains and ameliorates the development of renal insufficiency.
|
113 |
17018845
|
Renal levels of VEGF and VEGFR-1 proteins and serum creatinine concentrations were significantly higher and renal levels of alpha(3)(IV) collagen and nephrin proteins and endogenous creatinine clearance values were significantly lower in control diabetic than in age-matched nondiabetic (db/m) mice.
|
114 |
17259378
|
The protein kinase C (PKC)-beta isoform has been implicated to play a pivotal role in the development of diabetic kidney disease.
|
115 |
17259378
|
After 8 weeks of diabetes, the high-glucose-induced renal and glomerular hypertrophy, as well as the increased expression of extracellular matrix proteins such as collagen and fibronectin, was reduced in PKC-beta(-/-) mice.
|
116 |
17259378
|
Furthermore, the high-glucose-induced expression of the profibrotic cytokine transforming growth factor (TGF)-beta1 and connective tissue growth factor were significantly diminished in the diabetic PKC-beta(-/-) mice compared with diabetic wild-type mice, suggesting a role of the PKC-beta isoform in the regulation of renal hypertrophy.
|
117 |
17259378
|
Notably, increased urinary albumin-to-creatinine ratio persisted in the diabetic PKC-beta(-/-) mice.
|
118 |
17259378
|
The loss of the basement membrane proteoglycan perlecan and the podocyte protein nephrin in the diabetic state was not prevented in the PKC-beta(-/-) mice as previously demonstrated in the nonalbuminuric diabetic PKC-alpha(-/-) mice.
|
119 |
17259378
|
In summary, the differential effects of PKC-beta deficiency on diabetes-induced renal hypertrophy and albuminuria suggest that PKC-beta contributes to high-glucose-induced TGF-beta1 expression and renal fibrosis, whereas perlecan, as well as nephrin, expression and albuminuria is regulated by other signaling pathways.
|
120 |
17259378
|
The protein kinase C (PKC)-beta isoform has been implicated to play a pivotal role in the development of diabetic kidney disease.
|
121 |
17259378
|
After 8 weeks of diabetes, the high-glucose-induced renal and glomerular hypertrophy, as well as the increased expression of extracellular matrix proteins such as collagen and fibronectin, was reduced in PKC-beta(-/-) mice.
|
122 |
17259378
|
Furthermore, the high-glucose-induced expression of the profibrotic cytokine transforming growth factor (TGF)-beta1 and connective tissue growth factor were significantly diminished in the diabetic PKC-beta(-/-) mice compared with diabetic wild-type mice, suggesting a role of the PKC-beta isoform in the regulation of renal hypertrophy.
|
123 |
17259378
|
Notably, increased urinary albumin-to-creatinine ratio persisted in the diabetic PKC-beta(-/-) mice.
|
124 |
17259378
|
The loss of the basement membrane proteoglycan perlecan and the podocyte protein nephrin in the diabetic state was not prevented in the PKC-beta(-/-) mice as previously demonstrated in the nonalbuminuric diabetic PKC-alpha(-/-) mice.
|
125 |
17259378
|
In summary, the differential effects of PKC-beta deficiency on diabetes-induced renal hypertrophy and albuminuria suggest that PKC-beta contributes to high-glucose-induced TGF-beta1 expression and renal fibrosis, whereas perlecan, as well as nephrin, expression and albuminuria is regulated by other signaling pathways.
|
126 |
17264876
|
Reduction of VEGF-A and CTGF expression in diabetic nephropathy is associated with podocyte loss.
|
127 |
17264876
|
We now set out to investigate the relationship between reduced VEGF-A and connective tissue growth factor (CTGF) expression levels, the number of podocytes, and the extent of interstitial fibrosis.
|
128 |
17264876
|
Laser capture microdissection was applied to obtain glomerular RNA from 28 patients with DN and 22 controls. mRNA levels of VEGF-A, CTGF, nephrin, podocin, and Wilms tumor1 (WT1) were measured using real-time polymerase chain reaction.
|
129 |
17264876
|
Protein expression was evaluated using immuno-stainings for VEGF-A and CTGF, as well as markers for podocytes (WT1) and endothelial cells (CD31).
|
130 |
17264876
|
We found a significant decrease in glomerular mRNA levels for VEGF-A (2.5 times), CTGF (1.6), nephrin (2.8), podocin (3.3), and WT1 (1.7) in patients with DN.
|
131 |
17264876
|
There was a significant correlation between expression of podocyte markers and VEGF-A mRNA levels, and an inverse correlation between podocin message and the extent of interstitial fibrosis.
|
132 |
17264876
|
The results may suggest that downregulation of VEGF-A and CTGF in DN is a result of podocyte loss.
|
133 |
17264876
|
Reduction of VEGF-A and CTGF expression in diabetic nephropathy is associated with podocyte loss.
|
134 |
17264876
|
We now set out to investigate the relationship between reduced VEGF-A and connective tissue growth factor (CTGF) expression levels, the number of podocytes, and the extent of interstitial fibrosis.
|
135 |
17264876
|
Laser capture microdissection was applied to obtain glomerular RNA from 28 patients with DN and 22 controls. mRNA levels of VEGF-A, CTGF, nephrin, podocin, and Wilms tumor1 (WT1) were measured using real-time polymerase chain reaction.
|
136 |
17264876
|
Protein expression was evaluated using immuno-stainings for VEGF-A and CTGF, as well as markers for podocytes (WT1) and endothelial cells (CD31).
|
137 |
17264876
|
We found a significant decrease in glomerular mRNA levels for VEGF-A (2.5 times), CTGF (1.6), nephrin (2.8), podocin (3.3), and WT1 (1.7) in patients with DN.
|
138 |
17264876
|
There was a significant correlation between expression of podocyte markers and VEGF-A mRNA levels, and an inverse correlation between podocin message and the extent of interstitial fibrosis.
|
139 |
17264876
|
The results may suggest that downregulation of VEGF-A and CTGF in DN is a result of podocyte loss.
|
140 |
17395751
|
Nephrin is critical for the action of insulin on human glomerular podocytes.
|
141 |
17395751
|
Knocking nephrin down with siRNA in wild-type podocytes abrogated the insulin response, and stable nephrin transfection of nephrin-deficient podocytes rescued their insulin response.
|
142 |
17395751
|
Mechanistically, we show that nephrin allows the GLUT1- and GLUT4-rich vesicles to fuse with the membrane of this cell.
|
143 |
17395751
|
Furthermore, we show that the COOH of nephrin interacts with the vesicular SNARE protein VAMP2 in vitro and ex vivo (using yeast-2 hybrid and coimmunoprecipitation studies).
|
144 |
17395751
|
This work demonstrates a previously unsuspected role of nephrin in vesicular docking and insulin responsiveness of podocytes.
|
145 |
17395751
|
Nephrin is critical for the action of insulin on human glomerular podocytes.
|
146 |
17395751
|
Knocking nephrin down with siRNA in wild-type podocytes abrogated the insulin response, and stable nephrin transfection of nephrin-deficient podocytes rescued their insulin response.
|
147 |
17395751
|
Mechanistically, we show that nephrin allows the GLUT1- and GLUT4-rich vesicles to fuse with the membrane of this cell.
|
148 |
17395751
|
Furthermore, we show that the COOH of nephrin interacts with the vesicular SNARE protein VAMP2 in vitro and ex vivo (using yeast-2 hybrid and coimmunoprecipitation studies).
|
149 |
17395751
|
This work demonstrates a previously unsuspected role of nephrin in vesicular docking and insulin responsiveness of podocytes.
|
150 |
17395751
|
Nephrin is critical for the action of insulin on human glomerular podocytes.
|
151 |
17395751
|
Knocking nephrin down with siRNA in wild-type podocytes abrogated the insulin response, and stable nephrin transfection of nephrin-deficient podocytes rescued their insulin response.
|
152 |
17395751
|
Mechanistically, we show that nephrin allows the GLUT1- and GLUT4-rich vesicles to fuse with the membrane of this cell.
|
153 |
17395751
|
Furthermore, we show that the COOH of nephrin interacts with the vesicular SNARE protein VAMP2 in vitro and ex vivo (using yeast-2 hybrid and coimmunoprecipitation studies).
|
154 |
17395751
|
This work demonstrates a previously unsuspected role of nephrin in vesicular docking and insulin responsiveness of podocytes.
|
155 |
17395751
|
Nephrin is critical for the action of insulin on human glomerular podocytes.
|
156 |
17395751
|
Knocking nephrin down with siRNA in wild-type podocytes abrogated the insulin response, and stable nephrin transfection of nephrin-deficient podocytes rescued their insulin response.
|
157 |
17395751
|
Mechanistically, we show that nephrin allows the GLUT1- and GLUT4-rich vesicles to fuse with the membrane of this cell.
|
158 |
17395751
|
Furthermore, we show that the COOH of nephrin interacts with the vesicular SNARE protein VAMP2 in vitro and ex vivo (using yeast-2 hybrid and coimmunoprecipitation studies).
|
159 |
17395751
|
This work demonstrates a previously unsuspected role of nephrin in vesicular docking and insulin responsiveness of podocytes.
|
160 |
17395751
|
Nephrin is critical for the action of insulin on human glomerular podocytes.
|
161 |
17395751
|
Knocking nephrin down with siRNA in wild-type podocytes abrogated the insulin response, and stable nephrin transfection of nephrin-deficient podocytes rescued their insulin response.
|
162 |
17395751
|
Mechanistically, we show that nephrin allows the GLUT1- and GLUT4-rich vesicles to fuse with the membrane of this cell.
|
163 |
17395751
|
Furthermore, we show that the COOH of nephrin interacts with the vesicular SNARE protein VAMP2 in vitro and ex vivo (using yeast-2 hybrid and coimmunoprecipitation studies).
|
164 |
17395751
|
This work demonstrates a previously unsuspected role of nephrin in vesicular docking and insulin responsiveness of podocytes.
|
165 |
17554150
|
Significantly reduced expression of TGF-beta, vascular endothelial growth factor, and collagen IV was found in glomeruli and the tubulointerstitial area with CERA treatment, and these beneficial molecular effects were clearly dosage dependent (both P < 0.05 versus placebo).
|
166 |
17554150
|
Similarly, CERA treatment caused a dosage-dependent increase in p-Akt, nephrin, and perlecan tissue expression (all P < 0.05 versus placebo).
|
167 |
17570945
|
Components of the diabetic milieu (high glucose, accumulation of glycated proteins, high intrarenal angiotensin II (ANG II), and hypertension-induced mechanical stress) result in activation of cytokine systems, the most important of which are transforming growth factor-beta1 (TGF-beta1) and vascular endothelial growth factor-A (VEGF-A).
|
168 |
17570945
|
ANG II-stimulated podocyte-derived VEGF, through a novel autocrine signaling loop, appears to be a major cause of nephrin downregulation and the development of proteinuria.
|
169 |
17768702
|
Diabetic, but not non-diabetic, MHS rats showed significantly reduced synaptopodin and nephrin expression, though to a lesser extent than non-diabetic and diabetic MNS rats, together with unchanged podocyte number, density and structure and no proteinuria.
|
170 |
17768702
|
Agrin expression was significantly altered in diabetic versus non-diabetic MHS animals, whereas collagen I was expressed only in diabetic MHS rats and collagen IV content did not change significantly between the two groups.
|
171 |
17890883
|
Prevention of hypertension with or without renin-angiotensin system inhibition precludes nephrin loss in the early stage of experimental diabetes mellitus.
|
172 |
17897015
|
There is loss of nephrin from the slit diaphragm, increased synthesis of some of the components of the glomerular basement membrane, activation of pro-apoptotic and hypertrophic pathways, loss of the alpha3beta1 integrin and increased secretion of VEGF.
|
173 |
17928826
|
More fibronectin (FN) and less nephrin were expressed in the VDR knockout mice compared to diabetic wild-type mice.
|
174 |
17928826
|
In receptor knockout mice, increased renin, angiotensinogen, transforming growth factor-beta (TGF-beta), and connective tissue growth factor accompanied the more severe renal injury. 1,25-Dihydroxyvitmain D3 inhibited high glucose (HG)-induced FN production in cultured mesangial cells and increased nephrin expression in cultured podocytes. 1,25-Dihydroxyvitmain D3 also suppressed HG-induced activation of the RAS and TGF-beta in mesangial and juxtaglomerular cells.
|
175 |
17928826
|
More fibronectin (FN) and less nephrin were expressed in the VDR knockout mice compared to diabetic wild-type mice.
|
176 |
17928826
|
In receptor knockout mice, increased renin, angiotensinogen, transforming growth factor-beta (TGF-beta), and connective tissue growth factor accompanied the more severe renal injury. 1,25-Dihydroxyvitmain D3 inhibited high glucose (HG)-induced FN production in cultured mesangial cells and increased nephrin expression in cultured podocytes. 1,25-Dihydroxyvitmain D3 also suppressed HG-induced activation of the RAS and TGF-beta in mesangial and juxtaglomerular cells.
|
177 |
18220580
|
Nephrin is lost in both human and experimental diabetic nephropathy and studies on cultured podocytes have shown that insults relevant to diabetes, such as high glucose, AGE, angiotensin II, and stretch, have important deleterious effects on podocyte survival and adhesion.
|
178 |
18220689
|
Specific markers of islet microvasculature are alpha-1 proteinase inhibitor and nephrin, a highly specific barrier protein with adhesion and signalling function.
|
179 |
18220694
|
Angiotensin II in turn stimulates podocyte-derived VEGF, suppresses nephrin expression, and induces TGF-beta1 leading to podocyte apoptosis and fostering the development of glomerulosclerosis.
|
180 |
18220694
|
Besides direct effects of albuminuria on tubular cells, pathophysiological changes in the ultrafiltration barrier lead to an increased tubular filtration of various growth factors (TGF-beta1, insulin-like growth factor I) that may further alter the function of tubular cells.
|
181 |
18220694
|
In addition, under locally high concentrations of angiotensin II and TGF-beta1, tubular cells may change their phenotype and become fibroblasts by a process called epithelial to mesenchymal transition (EMT) which contributes to interstitial fibrosis and tubular atrophy because of vanishing epithelia cells.
|
182 |
18449463
|
Since insulin levels are misregulated in type 2 diabetes, a possible connection between DN and its decreased nephrin expression could be the presence of regulatory elements responsive to insulin in the nephrin gene (NPHS1) promoter region.
|
183 |
18838678
|
Combination therapy with AT1 blocker and vitamin D analog markedly ameliorates diabetic nephropathy: blockade of compensatory renin increase.
|
184 |
18838678
|
Here we demonstrated that combination therapy with an AT1 receptor blocker and a vitamin D analog markedly ameliorated renal injury in the streptozotocin (STZ)-induced diabetes model due to the blockade of the compensatory renin rise by the vitamin D analog, leading to more effective RAS inhibition.
|
185 |
18838678
|
STZ-treated diabetic DBA/2J mice developed progressive albuminuria and glomerulosclerosis within 13 weeks, accompanied by increased intrarenal production of angiotensin (Ang) II, fibronection, TGF-beta, and MCP-1 and decreased expression of slit diaphragm proteins.
|
186 |
18838678
|
The combined treatment suppressed the induction of fibronection, TGF-beta, and MCP-1 and reversed the decline of slit diaphragm proteins nephrin, Neph-1, ZO-1, and alpha-actinin-4.
|
187 |
18838678
|
These were accompanied by blockade of intrarenal renin and Ang II accumulation induced by hyperglycemia and losartan.
|
188 |
18971923
|
Inhibition of C-jun N-terminal kinase improves insulin sensitivity but worsens albuminuria in experimental diabetes.
|
189 |
18971923
|
C-jun N-terminal kinase (JNK) regulates both the development of insulin resistance and inflammation.
|
190 |
18971923
|
Treatment of podocytes isolated from these two strains of mice with tumor necrosis factor-alpha caused greater phosphorylation of JNK in those obtained from diabetic animals.
|
191 |
18971923
|
We induced diabetes in JNK1 knockout mice with streptozotocin and found that they had significantly better insulin sensitivity compared to diabetic wild-type or JNK2 knockout mice.
|
192 |
18971923
|
Albuminuria was, however, worse in all mice treated with the JNK inhibitor and in diabetic JNK2 knockout mice compared to controls.
|
193 |
18971923
|
Nephrin expression was also reduced in JNK inhibitor-treated mice compared to controls.
|
194 |
18971923
|
Our study shows that targeting JNK to improve systemic insulin sensitivity does not necessarily prevent diabetic nephropathy.
|
195 |
19255250
|
Extracellular antagonists such as connective tissue growth factor (CTGF; CCN-2) and sclerostin domain-containing-1 (SOSTDC1; USAG-1) are important determinants of BMP signaling activity in glomeruli.
|
196 |
19255250
|
BMP signaling activity was visualized by phosphorylated Smad1, -5, and -8 (pSmad1/5/8) immunostaining, and related to expression of CTGF, SOSTDC1, and the podocyte differentiation markers WT1, synaptopodin, and nephrin.
|
197 |
19255250
|
Nephrin and synaptopodin were decreased in diabetic glomeruli.
|
198 |
19255250
|
SOSTDC1 and CTGF were expressed exclusively in podocytes.
|
199 |
19255250
|
In diabetic glomeruli, SOSTDC1 decreased in parallel with podocyte number, whereas CTGF was strongly increased.
|
200 |
19255250
|
This might relate to concomitant overexpression of CTGF but not SOSTDC1.
|
201 |
19507273
|
The expressions of nephrin, tumor necrosis factor-alpha (TNF-alpha), NF-kappaB p65 and 3-nitrotyrosine (3-NT) protein were determined by immunoinfluorescence or Western blot analysis in the kidneys.
|
202 |
19507273
|
The expressions of TNF-alpha, NF-kappaB p65 and 3-NT protein were significantly increased in the kidneys of diabetic rats, which were all significantly inhibited by TGP treatment.
|
203 |
19587356
|
Effect of the monocyte chemoattractant protein-1/CC chemokine receptor 2 system on nephrin expression in streptozotocin-treated mice and human cultured podocytes.
|
204 |
19628668
|
Wnt/beta-catenin signaling promotes podocyte dysfunction and albuminuria.
|
205 |
19628668
|
Here we show that Wnt/beta-catenin signaling plays a critical role in podocyte injury and proteinuria.
|
206 |
19628668
|
Treatment with adriamycin induced Wnt and activated beta-catenin in mouse podocytes.
|
207 |
19628668
|
Overexpression of Wnt1 in vivo activated glomerular beta-catenin and aggravated albuminuria and adriamycin-induced suppression of nephrin expression, whereas blockade of Wnt signaling with Dickkopf-1 ameliorated podocyte lesions.
|
208 |
19628668
|
Podocyte-specific knockout of beta-catenin protected against development of albuminuria after injury.
|
209 |
19628668
|
Moreover, pharmacologic activation of beta-catenin induced albuminuria in wild-type mice but not in beta-catenin-knockout littermates.
|
210 |
19628668
|
In human proteinuric kidney diseases such as diabetic nephropathy and focal segmental glomerulosclerosis, we observed upregulation of Wnt1 and active beta-catenin in podocytes.
|
211 |
19628668
|
Ectopic expression of either Wnt1 or stabilized beta-catenin in vitro induced the transcription factor Snail and suppressed nephrin expression, leading to podocyte dysfunction.
|
212 |
19628668
|
These results suggest that targeting hyperactive Wnt/beta-catenin signaling may represent a novel therapeutic strategy for proteinuric kidney diseases.
|
213 |
19628668
|
Wnt/beta-catenin signaling promotes podocyte dysfunction and albuminuria.
|
214 |
19628668
|
Here we show that Wnt/beta-catenin signaling plays a critical role in podocyte injury and proteinuria.
|
215 |
19628668
|
Treatment with adriamycin induced Wnt and activated beta-catenin in mouse podocytes.
|
216 |
19628668
|
Overexpression of Wnt1 in vivo activated glomerular beta-catenin and aggravated albuminuria and adriamycin-induced suppression of nephrin expression, whereas blockade of Wnt signaling with Dickkopf-1 ameliorated podocyte lesions.
|
217 |
19628668
|
Podocyte-specific knockout of beta-catenin protected against development of albuminuria after injury.
|
218 |
19628668
|
Moreover, pharmacologic activation of beta-catenin induced albuminuria in wild-type mice but not in beta-catenin-knockout littermates.
|
219 |
19628668
|
In human proteinuric kidney diseases such as diabetic nephropathy and focal segmental glomerulosclerosis, we observed upregulation of Wnt1 and active beta-catenin in podocytes.
|
220 |
19628668
|
Ectopic expression of either Wnt1 or stabilized beta-catenin in vitro induced the transcription factor Snail and suppressed nephrin expression, leading to podocyte dysfunction.
|
221 |
19628668
|
These results suggest that targeting hyperactive Wnt/beta-catenin signaling may represent a novel therapeutic strategy for proteinuric kidney diseases.
|
222 |
19833886
|
Nephrin is expressed on the surface of insulin vesicles and facilitates glucose-stimulated insulin release.
|
223 |
19906946
|
Stretch reduces nephrin expression via an angiotensin II-AT(1)-dependent mechanism in human podocytes: effect of rosiglitazone.
|
224 |
19906946
|
Nephrin mRNA and protein expression were assessed using quantitative real-time PCR, immunoblotting, and immunofluorescence, and the protein expression of AT(1) receptor and angiotensin II secretion were evaluated.
|
225 |
19906946
|
Indeed, podocyte stretching induced both angiotensin II secretion and AT(1) receptor overexpression, podocyte exposure to angiotensin II reduced nephrin protein expression, and both the AT-1 receptor antagonist candesartan and a specific anti-angiotensin II antibody completely abolished stretch-induced nephrin downregulation.
|
226 |
19906946
|
Similar to candesartan, the peroxisome proliferator-activated receptor (PPAR)-gamma agonist, rosiglitazone, also inhibited stretch-induced nephrin downregulation, suggesting interference with stretch-induced activation of the angiotensin II-AT(1) receptor system.
|
227 |
19906946
|
Accordingly, rosiglitazone did not alter stretch-induced angiotensin II secretion, but it prevented AT(1) upregulation in response to stretch.
|
228 |
19906946
|
These results suggest a role for hemodynamic stress in loss of nephrin expression and allude to a role of PPAR-gamma agonists in the prevention of this loss.
|
229 |
19906946
|
Stretch reduces nephrin expression via an angiotensin II-AT(1)-dependent mechanism in human podocytes: effect of rosiglitazone.
|
230 |
19906946
|
Nephrin mRNA and protein expression were assessed using quantitative real-time PCR, immunoblotting, and immunofluorescence, and the protein expression of AT(1) receptor and angiotensin II secretion were evaluated.
|
231 |
19906946
|
Indeed, podocyte stretching induced both angiotensin II secretion and AT(1) receptor overexpression, podocyte exposure to angiotensin II reduced nephrin protein expression, and both the AT-1 receptor antagonist candesartan and a specific anti-angiotensin II antibody completely abolished stretch-induced nephrin downregulation.
|
232 |
19906946
|
Similar to candesartan, the peroxisome proliferator-activated receptor (PPAR)-gamma agonist, rosiglitazone, also inhibited stretch-induced nephrin downregulation, suggesting interference with stretch-induced activation of the angiotensin II-AT(1) receptor system.
|
233 |
19906946
|
Accordingly, rosiglitazone did not alter stretch-induced angiotensin II secretion, but it prevented AT(1) upregulation in response to stretch.
|
234 |
19906946
|
These results suggest a role for hemodynamic stress in loss of nephrin expression and allude to a role of PPAR-gamma agonists in the prevention of this loss.
|
235 |
19906946
|
Stretch reduces nephrin expression via an angiotensin II-AT(1)-dependent mechanism in human podocytes: effect of rosiglitazone.
|
236 |
19906946
|
Nephrin mRNA and protein expression were assessed using quantitative real-time PCR, immunoblotting, and immunofluorescence, and the protein expression of AT(1) receptor and angiotensin II secretion were evaluated.
|
237 |
19906946
|
Indeed, podocyte stretching induced both angiotensin II secretion and AT(1) receptor overexpression, podocyte exposure to angiotensin II reduced nephrin protein expression, and both the AT-1 receptor antagonist candesartan and a specific anti-angiotensin II antibody completely abolished stretch-induced nephrin downregulation.
|
238 |
19906946
|
Similar to candesartan, the peroxisome proliferator-activated receptor (PPAR)-gamma agonist, rosiglitazone, also inhibited stretch-induced nephrin downregulation, suggesting interference with stretch-induced activation of the angiotensin II-AT(1) receptor system.
|
239 |
19906946
|
Accordingly, rosiglitazone did not alter stretch-induced angiotensin II secretion, but it prevented AT(1) upregulation in response to stretch.
|
240 |
19906946
|
These results suggest a role for hemodynamic stress in loss of nephrin expression and allude to a role of PPAR-gamma agonists in the prevention of this loss.
|
241 |
19906946
|
Stretch reduces nephrin expression via an angiotensin II-AT(1)-dependent mechanism in human podocytes: effect of rosiglitazone.
|
242 |
19906946
|
Nephrin mRNA and protein expression were assessed using quantitative real-time PCR, immunoblotting, and immunofluorescence, and the protein expression of AT(1) receptor and angiotensin II secretion were evaluated.
|
243 |
19906946
|
Indeed, podocyte stretching induced both angiotensin II secretion and AT(1) receptor overexpression, podocyte exposure to angiotensin II reduced nephrin protein expression, and both the AT-1 receptor antagonist candesartan and a specific anti-angiotensin II antibody completely abolished stretch-induced nephrin downregulation.
|
244 |
19906946
|
Similar to candesartan, the peroxisome proliferator-activated receptor (PPAR)-gamma agonist, rosiglitazone, also inhibited stretch-induced nephrin downregulation, suggesting interference with stretch-induced activation of the angiotensin II-AT(1) receptor system.
|
245 |
19906946
|
Accordingly, rosiglitazone did not alter stretch-induced angiotensin II secretion, but it prevented AT(1) upregulation in response to stretch.
|
246 |
19906946
|
These results suggest a role for hemodynamic stress in loss of nephrin expression and allude to a role of PPAR-gamma agonists in the prevention of this loss.
|
247 |
19906946
|
Stretch reduces nephrin expression via an angiotensin II-AT(1)-dependent mechanism in human podocytes: effect of rosiglitazone.
|
248 |
19906946
|
Nephrin mRNA and protein expression were assessed using quantitative real-time PCR, immunoblotting, and immunofluorescence, and the protein expression of AT(1) receptor and angiotensin II secretion were evaluated.
|
249 |
19906946
|
Indeed, podocyte stretching induced both angiotensin II secretion and AT(1) receptor overexpression, podocyte exposure to angiotensin II reduced nephrin protein expression, and both the AT-1 receptor antagonist candesartan and a specific anti-angiotensin II antibody completely abolished stretch-induced nephrin downregulation.
|
250 |
19906946
|
Similar to candesartan, the peroxisome proliferator-activated receptor (PPAR)-gamma agonist, rosiglitazone, also inhibited stretch-induced nephrin downregulation, suggesting interference with stretch-induced activation of the angiotensin II-AT(1) receptor system.
|
251 |
19906946
|
Accordingly, rosiglitazone did not alter stretch-induced angiotensin II secretion, but it prevented AT(1) upregulation in response to stretch.
|
252 |
19906946
|
These results suggest a role for hemodynamic stress in loss of nephrin expression and allude to a role of PPAR-gamma agonists in the prevention of this loss.
|
253 |
19950250
|
Utilizing a powerful human cell culture model, comparing wild-type with nephrin-null podocytes, we can show that several crucial functional properties of podocytes depend on nephrin, including insulin responsiveness and cytoskeletal reorganization.
|
254 |
19955187
|
Characterization of arbitrarily selected two clonal cell lines from each human subject was carried out. mRNA expression for the podocyte markers synaptopodin, nestin, and CD2AP were detected in all eight clones.
|
255 |
19955187
|
The expression of nephrin, Wilms' tumor 1 (WT1), and podocalyxin mRNA varied among the clones, which may be due to transformation and/or cloning.
|
256 |
20186149
|
As angiotensin-converting enzyme-2 (ACE2) was identified as a negative regulator of the renin-angiotensin system, there have been many reports concerning its role in several tissues, including the kidney.
|
257 |
20186149
|
Periodic acid-Schiff-stained cross-section of diabetic ACE2-KO mice showed a more severe time-dependent increase in glomerular/tubulointerstitial damage than did that of wild-type mice, confirmed by the immunostaining of alpha-smooth muscle actin, collagen IV and F4-80 antigen.
|
258 |
20186149
|
Glomeruli of diabetic ACE2-KO mice showed earlier and more severe decrease in the expression of nephrin, whose degradation is involved in the onset of albuminuria, and more potent increase of vascular endothelial growth factor expression.
|
259 |
20186149
|
The renal-protective effect of ACE2 might involve more than just suppressing angiotensin II-mediated AT1 receptor signaling.
|
260 |
20375116
|
Therefore, we generated two podocyte-specific GLUT1 transgenic mouse lines (driven by a podocin promoter) on a db/m C57BLKS background.
|
261 |
20375116
|
Levels of nephrin, neph1, CD2AP, podocin, and GLUT4 were not significantly different in transgenic compared with wild-type mice.
|
262 |
20375116
|
Taken together, increased podocyte GLUT1 expression in diabetic mice does not contribute to early diabetic nephropathy; surprisingly, it protects against mesangial expansion and fibronectin accumulation possibly by blunting podocyte VEGF increases.
|
263 |
20375978
|
Using transmission electron microscopy, we established that VEGF-A receptor-2 (VEGFR2) was expressed in podocytes and glomerular endothelial cells.
|
264 |
20375978
|
Further, we were able to co-immunoprecipitate VEGFR2 and nephrin using whole kidney lysates, confirming interaction in vivo.
|
265 |
20375978
|
This implies that autocrine and paracrine VEGF-A signaling through VEGFR2 occurs in podocytes and may mediate the glomerular phenotype caused by VEGF164 overexpression.
|
266 |
20385070
|
Nephrin and Macrophage Chemoattractant Protein-1 (MCP-1) gene expression were also assessed by fluorescence real-time quantitative PCR after RNA extraction and cDNA synthesis.
|
267 |
20385070
|
DTS supplementation also enabled a reduction of diabetes-induced decrease of nephrin mRNA expression and a 67 percent reduction of MCP-1 mRNA up-regulation (p less than 0.01).
|
268 |
20385070
|
Nephrin and Macrophage Chemoattractant Protein-1 (MCP-1) gene expression were also assessed by fluorescence real-time quantitative PCR after RNA extraction and cDNA synthesis.
|
269 |
20385070
|
DTS supplementation also enabled a reduction of diabetes-induced decrease of nephrin mRNA expression and a 67 percent reduction of MCP-1 mRNA up-regulation (p less than 0.01).
|
270 |
20419132
|
Podocytic PKC-alpha is regulated in murine and human diabetes and mediates nephrin endocytosis.
|
271 |
20606418
|
Renoprotection by rosiglitazone in accelerated type 2 diabetic nephropathy: Role of STAT1 inhibition and nephrin restoration.
|
272 |
20668098
|
Compared with podocytes transformed with a thermo-sensitive SV40 large T antigen mutant tsA58U19 (tsT podocytes), podocytes transformed with CDK4 (CDK4 podocytes) exhibited significantly higher expression of nephrin mRNA.
|
273 |
20668098
|
Synaptopodin mRNA expression was significantly lower in CDK4 podocytes and in tsT podocytes under growth-permissive conditions (33°C) compared with tsT podocytes under growth-restricted conditions (37°C), which suggests a role for cell cycle arrest in synaptopodin mRNA expression.
|
274 |
20668098
|
Confluent CDK4 podocytes showed significantly higher mRNA expression levels for nephrin, synaptopodin, Wilms tumor 1, podocalyxin, and P-cadherin compared with subconfluent cultures.
|
275 |
20668098
|
We carried out experiments to clarify roles of various factors in the confluent podocyte cultures; our findings indicate that cell-cell contact promotes expression of five podocyte marker genes studied, that cellular quiescence increases synaptopodin and podocalyxin mRNA expression, and that soluble factors play a role in nephrin mRNA expression.
|
276 |
20668098
|
Compared with podocytes transformed with a thermo-sensitive SV40 large T antigen mutant tsA58U19 (tsT podocytes), podocytes transformed with CDK4 (CDK4 podocytes) exhibited significantly higher expression of nephrin mRNA.
|
277 |
20668098
|
Synaptopodin mRNA expression was significantly lower in CDK4 podocytes and in tsT podocytes under growth-permissive conditions (33°C) compared with tsT podocytes under growth-restricted conditions (37°C), which suggests a role for cell cycle arrest in synaptopodin mRNA expression.
|
278 |
20668098
|
Confluent CDK4 podocytes showed significantly higher mRNA expression levels for nephrin, synaptopodin, Wilms tumor 1, podocalyxin, and P-cadherin compared with subconfluent cultures.
|
279 |
20668098
|
We carried out experiments to clarify roles of various factors in the confluent podocyte cultures; our findings indicate that cell-cell contact promotes expression of five podocyte marker genes studied, that cellular quiescence increases synaptopodin and podocalyxin mRNA expression, and that soluble factors play a role in nephrin mRNA expression.
|
280 |
20668098
|
Compared with podocytes transformed with a thermo-sensitive SV40 large T antigen mutant tsA58U19 (tsT podocytes), podocytes transformed with CDK4 (CDK4 podocytes) exhibited significantly higher expression of nephrin mRNA.
|
281 |
20668098
|
Synaptopodin mRNA expression was significantly lower in CDK4 podocytes and in tsT podocytes under growth-permissive conditions (33°C) compared with tsT podocytes under growth-restricted conditions (37°C), which suggests a role for cell cycle arrest in synaptopodin mRNA expression.
|
282 |
20668098
|
Confluent CDK4 podocytes showed significantly higher mRNA expression levels for nephrin, synaptopodin, Wilms tumor 1, podocalyxin, and P-cadherin compared with subconfluent cultures.
|
283 |
20668098
|
We carried out experiments to clarify roles of various factors in the confluent podocyte cultures; our findings indicate that cell-cell contact promotes expression of five podocyte marker genes studied, that cellular quiescence increases synaptopodin and podocalyxin mRNA expression, and that soluble factors play a role in nephrin mRNA expression.
|
284 |
20719975
|
Adding a statin to a combination of ACE inhibitor and ARB normalizes proteinuria in experimental diabetes, which translates into full renoprotection.
|
285 |
20719975
|
Here we assessed the effects of maximal RAS inhibition by angiotensin-converting enzyme (ACE) inhibitor plus angiotensin II type 1 receptor blocker (ARB) in combination with statin in rats with overt diabetic nephropathy.
|
286 |
20719975
|
Defective nephrin expression of diabetes was increased by dual RAS blockade or statin and restored by the triple therapy.
|
287 |
20719975
|
Tubular damage, interstitial inflammation, and expression of the fibrotic markers transforming growth factor (TGF)-β1 and phosphorylated Smad 2/3 in tubuli were significantly reduced by the triple regimen.
|
288 |
21177830
|
Recent data suggest that nicotinamide adenine dinucleotide phosphate oxidase-mediated oxidative injury to the proximal tubule, like that seen in the glomerulus, contributes to proteinuria in insulin-resistant states.
|
289 |
21177830
|
The vasodilator β-blocker nebivolol reduces nicotinamide adenine dinucleotide phosphate oxidase activity, increases bioavailable nitric oxide, and improves insulin sensitivity.
|
290 |
21177830
|
Compared with Zucker lean, ZO controls exhibited increased proteinuria and γ-glutamyl transpeptidase, reductions in systemic insulin sensitivity in association with increased renal renin, (pro)renin receptor, angiotensin II type 1 receptor, and mineralocorticoid receptor immunostaining, oxidative stress, and glomerular tubular structural abnormalities that were substantially improved with in vivo nebivolol treatment.
|
291 |
21177830
|
Nebivolol treatment also led to improvements in glomerular podocyte foot-process effacement and improvement in podocyte-specific proteins (nephrin and synaptopodin) as well as proximal tubule-specific proteins (megalin and lysosomal-associated membrane protein-2) and proximal tubule ultrastructural remodeling in the ZO kidney.
|
292 |
21186102
|
Evidence has been reported that chemokine CXCL16, rather than CD36, is the main scavenger receptor in human podocytes mediating the uptake of ox-LDL.
|
293 |
21186102
|
It has been recently shown that nephrin once phosphorilated associates with PI3K and stimulates the Akt dependent signaling.
|
294 |
21186102
|
Notably CXCL16 are the main receptors for the uptake of ox-LDL in podocytes, whereas CD36 plays this role in tubular renal cells.
|
295 |
21228103
|
An increase in the renal levels of VEGF-A, VEGFR-2, transforming growth factor (TGF)-β1, and monocyte chemoattractant protein-1 in diabetic animals was significantly suppressed by AdhVASH-1 (immunoblotting).
|
296 |
21228103
|
AdhVASH-1 treatment significantly recovered the loss and altered the distribution patterns of nephrin and zonula occludens (ZO)-1 and suppressed the increase in the number of fibroblast-specific protein-1 (FSP-1(+)) and desmin(+) podocytes in diabetic mice.
|
297 |
21228103
|
In vitro, recombinant human VASH-1 (rhVASH-1) dose dependently suppressed the upregulation of VEGF induced by high ambient glucose (25 mM) in cultured mouse podocytes.
|
298 |
21228103
|
In addition, rhVASH-1 significantly recovered the mRNA levels of nephrin and the protein levels of ZO-1 and P-cadherin and suppressed the increase in protein levels of desmin, FSP-1, Snail, and Slug in podocytes under high-glucose condition.
|
299 |
21228103
|
An increase in the renal levels of VEGF-A, VEGFR-2, transforming growth factor (TGF)-β1, and monocyte chemoattractant protein-1 in diabetic animals was significantly suppressed by AdhVASH-1 (immunoblotting).
|
300 |
21228103
|
AdhVASH-1 treatment significantly recovered the loss and altered the distribution patterns of nephrin and zonula occludens (ZO)-1 and suppressed the increase in the number of fibroblast-specific protein-1 (FSP-1(+)) and desmin(+) podocytes in diabetic mice.
|
301 |
21228103
|
In vitro, recombinant human VASH-1 (rhVASH-1) dose dependently suppressed the upregulation of VEGF induced by high ambient glucose (25 mM) in cultured mouse podocytes.
|
302 |
21228103
|
In addition, rhVASH-1 significantly recovered the mRNA levels of nephrin and the protein levels of ZO-1 and P-cadherin and suppressed the increase in protein levels of desmin, FSP-1, Snail, and Slug in podocytes under high-glucose condition.
|
303 |
21289599
|
Urinary albumin excretion increased in vehicle-treated diabetic rats (single injection of streptozotocin), compared with controls, and was associated with tubule injury and increased urinary tumor necrosis factor-α (TNF-α) at 9 weeks.
|
304 |
21289599
|
Further, both agonists restored WT-1 staining along with podocin and nephrin mRNA expression, suggesting podocyte protection.
|
305 |
21321125
|
PKC alpha mediates beta-arrestin2-dependent nephrin endocytosis in hyperglycemia.
|
306 |
21321125
|
We identified PKCα and protein interacting with c kinase-1 (PICK1) as nephrin-binding proteins.
|
307 |
21321125
|
Hyperglycemia induced up-regulation of PKCα and led to the formation of a complex of nephrin, PKCα, PICK1, and β-arrestin2 in vitro and in vivo.
|
308 |
21321125
|
Further, cellular knockdown of PKCα and/or PICK1 attenuated the nephrin-β-arrestin2 interaction and abrogated the amplifying effect of high blood glucose on nephrin endocytosis.
|
309 |
21321125
|
In summary, we have provided a molecular model of hyperglycemia-induced nephrin endocytosis and subsequent proteinuria and highlighted PKCα and PICK1 as promising therapeutic targets for diabetic nephropathy.
|
310 |
21321125
|
PKC alpha mediates beta-arrestin2-dependent nephrin endocytosis in hyperglycemia.
|
311 |
21321125
|
We identified PKCα and protein interacting with c kinase-1 (PICK1) as nephrin-binding proteins.
|
312 |
21321125
|
Hyperglycemia induced up-regulation of PKCα and led to the formation of a complex of nephrin, PKCα, PICK1, and β-arrestin2 in vitro and in vivo.
|
313 |
21321125
|
Further, cellular knockdown of PKCα and/or PICK1 attenuated the nephrin-β-arrestin2 interaction and abrogated the amplifying effect of high blood glucose on nephrin endocytosis.
|
314 |
21321125
|
In summary, we have provided a molecular model of hyperglycemia-induced nephrin endocytosis and subsequent proteinuria and highlighted PKCα and PICK1 as promising therapeutic targets for diabetic nephropathy.
|
315 |
21321125
|
PKC alpha mediates beta-arrestin2-dependent nephrin endocytosis in hyperglycemia.
|
316 |
21321125
|
We identified PKCα and protein interacting with c kinase-1 (PICK1) as nephrin-binding proteins.
|
317 |
21321125
|
Hyperglycemia induced up-regulation of PKCα and led to the formation of a complex of nephrin, PKCα, PICK1, and β-arrestin2 in vitro and in vivo.
|
318 |
21321125
|
Further, cellular knockdown of PKCα and/or PICK1 attenuated the nephrin-β-arrestin2 interaction and abrogated the amplifying effect of high blood glucose on nephrin endocytosis.
|
319 |
21321125
|
In summary, we have provided a molecular model of hyperglycemia-induced nephrin endocytosis and subsequent proteinuria and highlighted PKCα and PICK1 as promising therapeutic targets for diabetic nephropathy.
|
320 |
21321125
|
PKC alpha mediates beta-arrestin2-dependent nephrin endocytosis in hyperglycemia.
|
321 |
21321125
|
We identified PKCα and protein interacting with c kinase-1 (PICK1) as nephrin-binding proteins.
|
322 |
21321125
|
Hyperglycemia induced up-regulation of PKCα and led to the formation of a complex of nephrin, PKCα, PICK1, and β-arrestin2 in vitro and in vivo.
|
323 |
21321125
|
Further, cellular knockdown of PKCα and/or PICK1 attenuated the nephrin-β-arrestin2 interaction and abrogated the amplifying effect of high blood glucose on nephrin endocytosis.
|
324 |
21321125
|
In summary, we have provided a molecular model of hyperglycemia-induced nephrin endocytosis and subsequent proteinuria and highlighted PKCα and PICK1 as promising therapeutic targets for diabetic nephropathy.
|
325 |
21321125
|
PKC alpha mediates beta-arrestin2-dependent nephrin endocytosis in hyperglycemia.
|
326 |
21321125
|
We identified PKCα and protein interacting with c kinase-1 (PICK1) as nephrin-binding proteins.
|
327 |
21321125
|
Hyperglycemia induced up-regulation of PKCα and led to the formation of a complex of nephrin, PKCα, PICK1, and β-arrestin2 in vitro and in vivo.
|
328 |
21321125
|
Further, cellular knockdown of PKCα and/or PICK1 attenuated the nephrin-β-arrestin2 interaction and abrogated the amplifying effect of high blood glucose on nephrin endocytosis.
|
329 |
21321125
|
In summary, we have provided a molecular model of hyperglycemia-induced nephrin endocytosis and subsequent proteinuria and highlighted PKCα and PICK1 as promising therapeutic targets for diabetic nephropathy.
|
330 |
21694920
|
Insulin resistance from excess fatty acids is exacerbated by decreased secretion of high molecular weight adiponectin from adipose cells in the obese state.
|
331 |
21694920
|
Adiponectin potentiates insulin in its post-receptor signaling resulting in glucose oxidation in mitochondria.
|
332 |
21694920
|
The architecture of the podocyte involves nephrin and podocin, proteins that cooperate to keep slit pores between foot processes competent to retain albumin.
|
333 |
21694920
|
Insulin and adiponectin are necessary for high-energy phosphate generation.
|
334 |
21694920
|
Fatty acid accumulation and resistin inhibit insulin and adiponectin.
|
335 |
21694920
|
Study of cytokines produced by adipose tissue (adiponectin and leptin) and macrophages (resistin) has led to a better understanding of the relationship between weight and hypertension.
|
336 |
21803771
|
ChIP scan of the 6-kb 5' upstream region of the mouse nephrin gene identified several putative vitamin D response elements (VDREs), and EMSA confirmed that the VDRE at -312 (a DR4-type VDRE) could be bound by vitamin D receptor (VDR)/retinoid X receptor.
|
337 |
21803771
|
ChIP assays showed that, upon 1,25(OH)(2)D(3) activation, VDR bound to this VDRE leading to recruitment of DRIP205 and RNA polymerase II and histone 4 acetylation.
|
338 |
21803771
|
Treatment of mice with a vitamin D analog induced nephrin mRNA and protein in the kidney, accompanied by increased VDR binding to the -312VDRE and histone 4 acetylation. 1,25(OH)(2)D(3) reversed high glucose-induced nephrin reduction in podocytes, and vitamin D analogs prevented nephrin decline in both type 1 and 2 diabetic mice.
|
339 |
21803771
|
ChIP scan of the 6-kb 5' upstream region of the mouse nephrin gene identified several putative vitamin D response elements (VDREs), and EMSA confirmed that the VDRE at -312 (a DR4-type VDRE) could be bound by vitamin D receptor (VDR)/retinoid X receptor.
|
340 |
21803771
|
ChIP assays showed that, upon 1,25(OH)(2)D(3) activation, VDR bound to this VDRE leading to recruitment of DRIP205 and RNA polymerase II and histone 4 acetylation.
|
341 |
21803771
|
Treatment of mice with a vitamin D analog induced nephrin mRNA and protein in the kidney, accompanied by increased VDR binding to the -312VDRE and histone 4 acetylation. 1,25(OH)(2)D(3) reversed high glucose-induced nephrin reduction in podocytes, and vitamin D analogs prevented nephrin decline in both type 1 and 2 diabetic mice.
|
342 |
21807121
|
The development of diabetes was associated with significant increases in total protein, albumin, nephrin and collagen excretions compared to their controls.
|
343 |
21807121
|
In addition, the diabetic mice displayed increased urinary MCP-1 excretion in association with increased renal ICAM-1 expression and apoptotic cells.
|
344 |
21913214
|
The roles of connective tissue growth factor and integrin-linked kinase in high glucose-induced phenotypic alterations of podocytes.
|
345 |
21913214
|
Connective tissue growth factor (CTGF) and integrin-linked kinase (ILK) are involved in the progression of DN.
|
346 |
21913214
|
The study aimed to investigate the roles of CTGF and ILK in high glucose-induced phenotypic alterations of podocytes and determine whether ILK signaling is downstream of CTGF.
|
347 |
21913214
|
The epithelial marker of nephrin and the mesenchymal marker of desmin were investigated by real-time RT-PCR and Western blotting.
|
348 |
21913214
|
The results demonstrated that podocytes displayed a spreading, arborized morphology in normal glucose, whereas they had a cobblestone morphology in high glucose conditions, accompanied by decreased nephrin expression and increased desmin expression, suggesting podocytes underwent EMT.
|
349 |
21913214
|
In response to high glucose, CTGF and ILK expression in podocytes were increased in a dose- and time-dependent manner, whereas the increase did not occur in the osmotic control.
|
350 |
21913214
|
Furthermore, the inhibition of CTGF with anti-CTGF antibody prevented the phenotypic transition, as demonstrated by the preservation of epithelial morphology, the suppression of high glucose-induced desmin overexpression and the restoration of nephrin.
|
351 |
21913214
|
Of note, the upregulation of ILK induced by high glucose was partially blocked by the inhibition of CTGF.
|
352 |
21913214
|
In summary, these findings suggested that CTGF and ILK were involved in high glucose-induced phenotypic alterations of podocytes.
|
353 |
21913214
|
ILK acted as a downstream kinase of CTGF and high glucose-induced ILK expression might occur through CTGF-dependent and -independent pathways.
|
354 |
21913214
|
The roles of connective tissue growth factor and integrin-linked kinase in high glucose-induced phenotypic alterations of podocytes.
|
355 |
21913214
|
Connective tissue growth factor (CTGF) and integrin-linked kinase (ILK) are involved in the progression of DN.
|
356 |
21913214
|
The study aimed to investigate the roles of CTGF and ILK in high glucose-induced phenotypic alterations of podocytes and determine whether ILK signaling is downstream of CTGF.
|
357 |
21913214
|
The epithelial marker of nephrin and the mesenchymal marker of desmin were investigated by real-time RT-PCR and Western blotting.
|
358 |
21913214
|
The results demonstrated that podocytes displayed a spreading, arborized morphology in normal glucose, whereas they had a cobblestone morphology in high glucose conditions, accompanied by decreased nephrin expression and increased desmin expression, suggesting podocytes underwent EMT.
|
359 |
21913214
|
In response to high glucose, CTGF and ILK expression in podocytes were increased in a dose- and time-dependent manner, whereas the increase did not occur in the osmotic control.
|
360 |
21913214
|
Furthermore, the inhibition of CTGF with anti-CTGF antibody prevented the phenotypic transition, as demonstrated by the preservation of epithelial morphology, the suppression of high glucose-induced desmin overexpression and the restoration of nephrin.
|
361 |
21913214
|
Of note, the upregulation of ILK induced by high glucose was partially blocked by the inhibition of CTGF.
|
362 |
21913214
|
In summary, these findings suggested that CTGF and ILK were involved in high glucose-induced phenotypic alterations of podocytes.
|
363 |
21913214
|
ILK acted as a downstream kinase of CTGF and high glucose-induced ILK expression might occur through CTGF-dependent and -independent pathways.
|
364 |
22056625
|
The phosphoinositide 3-kinase (PI3K) inhibitor, wortmannin, simultaneously regulates Rac1 and Cdc42, which destabilize the podocyte actin cytoskeleton during early DN.
|
365 |
22056625
|
In this study, in order to evaluate the reno-protective effects of wortmannin in early DN by regulating Rac1 and Cdc42, streptozotocin (STZ)-induced proteinuric renal disease (SPRD) rats were treated with wortmannin.
|
366 |
22056625
|
Changes in the expression level of nephrin, podocin and Rac1/Cdc42, which is related to actin cytoskeleton in podocytes, by wortmannin administration were confirmed by Western blotting.
|
367 |
22056625
|
The expression levels of nephrin (79.66 ± 0.02), podocin (87.81 ± 0.03) and Rac1/Cdc42 (86.12 ± 0.02) in the wortmannin group were higher than the expression levels of nephrin (55.32 ± 0.03), podocin (53.40 ± 0.06) and Rac1/Cdc42 (54.05 ± 0.04) in the SPRD group.
|
368 |
22056625
|
In addition, expression and localization of nephrin, podocin and desmin were confirmed by immunofluorescence.
|
369 |
22056625
|
The phosphoinositide 3-kinase (PI3K) inhibitor, wortmannin, simultaneously regulates Rac1 and Cdc42, which destabilize the podocyte actin cytoskeleton during early DN.
|
370 |
22056625
|
In this study, in order to evaluate the reno-protective effects of wortmannin in early DN by regulating Rac1 and Cdc42, streptozotocin (STZ)-induced proteinuric renal disease (SPRD) rats were treated with wortmannin.
|
371 |
22056625
|
Changes in the expression level of nephrin, podocin and Rac1/Cdc42, which is related to actin cytoskeleton in podocytes, by wortmannin administration were confirmed by Western blotting.
|
372 |
22056625
|
The expression levels of nephrin (79.66 ± 0.02), podocin (87.81 ± 0.03) and Rac1/Cdc42 (86.12 ± 0.02) in the wortmannin group were higher than the expression levels of nephrin (55.32 ± 0.03), podocin (53.40 ± 0.06) and Rac1/Cdc42 (54.05 ± 0.04) in the SPRD group.
|
373 |
22056625
|
In addition, expression and localization of nephrin, podocin and desmin were confirmed by immunofluorescence.
|
374 |
22056625
|
The phosphoinositide 3-kinase (PI3K) inhibitor, wortmannin, simultaneously regulates Rac1 and Cdc42, which destabilize the podocyte actin cytoskeleton during early DN.
|
375 |
22056625
|
In this study, in order to evaluate the reno-protective effects of wortmannin in early DN by regulating Rac1 and Cdc42, streptozotocin (STZ)-induced proteinuric renal disease (SPRD) rats were treated with wortmannin.
|
376 |
22056625
|
Changes in the expression level of nephrin, podocin and Rac1/Cdc42, which is related to actin cytoskeleton in podocytes, by wortmannin administration were confirmed by Western blotting.
|
377 |
22056625
|
The expression levels of nephrin (79.66 ± 0.02), podocin (87.81 ± 0.03) and Rac1/Cdc42 (86.12 ± 0.02) in the wortmannin group were higher than the expression levels of nephrin (55.32 ± 0.03), podocin (53.40 ± 0.06) and Rac1/Cdc42 (54.05 ± 0.04) in the SPRD group.
|
378 |
22056625
|
In addition, expression and localization of nephrin, podocin and desmin were confirmed by immunofluorescence.
|
379 |
22094487
|
Soy protein preserves basement membrane integrity through a synergistic effect on nephrin, matrix metalloproteinase and vascular endothelial growth factor.
|
380 |
22137331
|
The pathogenesis is multifactorial involving adaptive hyperfiltration, advanced glycosylated end-product synthesis (AGES), prorenin, cytokines, nephrin expression and impaired podocyte-specific insulin signaling.
|
381 |
22483555
|
The fasting blood glucose, insulin, total cholesterol, triglyceride, glycosylated hemoglobin were measured in rats.
|
382 |
22483555
|
In addition, the protein expressions of nephrin and podocin were significantly increased.
|
383 |
22496773
|
Urinary nephrin excretion was also significantly increased in albuminuric Akita mice at 16 and 20 weeks of age and correlated with the albumin excretion rate.
|
384 |
22718751
|
Dynamin-mediated Nephrin phosphorylation regulates glucose-stimulated insulin release in pancreatic beta cells.
|
385 |
22718751
|
We have previously demonstrated a role for Nephrin in glucose stimulated insulin release (GSIR).
|
386 |
22718751
|
We now hypothesize that Nephrin phosphorylation is required for GSIR and that Dynamin influences Nephrin phosphorylation and function.
|
387 |
22718751
|
Immunoprecipitation experiments and overexpression of WT-Dynamin or dominant negative Dynamin mutant (K44A-Dynamin) in WT-Nephrin, 3YF-Nephrin, or Nephrin siRNA-transfected cells were utilized to study Nephrin-Dynamin interaction.
|
388 |
22718751
|
K44A-Dynamin prevented the effect of Nephrin on GSIR in the absence of protein-protein interaction between Nephrin and Dynamin.
|
389 |
22718751
|
Nephrin gene silencing abolished the positive effects of WT-Dynamin on GSIR.
|
390 |
22718751
|
In conclusion, Dynamin-dependent Nephrin phosphorylation occurs in response to glucose and is necessary for Nephrin-mediated augmentation of GSIR.
|
391 |
22718751
|
Dynamin-mediated Nephrin phosphorylation regulates glucose-stimulated insulin release in pancreatic beta cells.
|
392 |
22718751
|
We have previously demonstrated a role for Nephrin in glucose stimulated insulin release (GSIR).
|
393 |
22718751
|
We now hypothesize that Nephrin phosphorylation is required for GSIR and that Dynamin influences Nephrin phosphorylation and function.
|
394 |
22718751
|
Immunoprecipitation experiments and overexpression of WT-Dynamin or dominant negative Dynamin mutant (K44A-Dynamin) in WT-Nephrin, 3YF-Nephrin, or Nephrin siRNA-transfected cells were utilized to study Nephrin-Dynamin interaction.
|
395 |
22718751
|
K44A-Dynamin prevented the effect of Nephrin on GSIR in the absence of protein-protein interaction between Nephrin and Dynamin.
|
396 |
22718751
|
Nephrin gene silencing abolished the positive effects of WT-Dynamin on GSIR.
|
397 |
22718751
|
In conclusion, Dynamin-dependent Nephrin phosphorylation occurs in response to glucose and is necessary for Nephrin-mediated augmentation of GSIR.
|
398 |
22718751
|
Dynamin-mediated Nephrin phosphorylation regulates glucose-stimulated insulin release in pancreatic beta cells.
|
399 |
22718751
|
We have previously demonstrated a role for Nephrin in glucose stimulated insulin release (GSIR).
|
400 |
22718751
|
We now hypothesize that Nephrin phosphorylation is required for GSIR and that Dynamin influences Nephrin phosphorylation and function.
|
401 |
22718751
|
Immunoprecipitation experiments and overexpression of WT-Dynamin or dominant negative Dynamin mutant (K44A-Dynamin) in WT-Nephrin, 3YF-Nephrin, or Nephrin siRNA-transfected cells were utilized to study Nephrin-Dynamin interaction.
|
402 |
22718751
|
K44A-Dynamin prevented the effect of Nephrin on GSIR in the absence of protein-protein interaction between Nephrin and Dynamin.
|
403 |
22718751
|
Nephrin gene silencing abolished the positive effects of WT-Dynamin on GSIR.
|
404 |
22718751
|
In conclusion, Dynamin-dependent Nephrin phosphorylation occurs in response to glucose and is necessary for Nephrin-mediated augmentation of GSIR.
|
405 |
22718751
|
Dynamin-mediated Nephrin phosphorylation regulates glucose-stimulated insulin release in pancreatic beta cells.
|
406 |
22718751
|
We have previously demonstrated a role for Nephrin in glucose stimulated insulin release (GSIR).
|
407 |
22718751
|
We now hypothesize that Nephrin phosphorylation is required for GSIR and that Dynamin influences Nephrin phosphorylation and function.
|
408 |
22718751
|
Immunoprecipitation experiments and overexpression of WT-Dynamin or dominant negative Dynamin mutant (K44A-Dynamin) in WT-Nephrin, 3YF-Nephrin, or Nephrin siRNA-transfected cells were utilized to study Nephrin-Dynamin interaction.
|
409 |
22718751
|
K44A-Dynamin prevented the effect of Nephrin on GSIR in the absence of protein-protein interaction between Nephrin and Dynamin.
|
410 |
22718751
|
Nephrin gene silencing abolished the positive effects of WT-Dynamin on GSIR.
|
411 |
22718751
|
In conclusion, Dynamin-dependent Nephrin phosphorylation occurs in response to glucose and is necessary for Nephrin-mediated augmentation of GSIR.
|
412 |
22718751
|
Dynamin-mediated Nephrin phosphorylation regulates glucose-stimulated insulin release in pancreatic beta cells.
|
413 |
22718751
|
We have previously demonstrated a role for Nephrin in glucose stimulated insulin release (GSIR).
|
414 |
22718751
|
We now hypothesize that Nephrin phosphorylation is required for GSIR and that Dynamin influences Nephrin phosphorylation and function.
|
415 |
22718751
|
Immunoprecipitation experiments and overexpression of WT-Dynamin or dominant negative Dynamin mutant (K44A-Dynamin) in WT-Nephrin, 3YF-Nephrin, or Nephrin siRNA-transfected cells were utilized to study Nephrin-Dynamin interaction.
|
416 |
22718751
|
K44A-Dynamin prevented the effect of Nephrin on GSIR in the absence of protein-protein interaction between Nephrin and Dynamin.
|
417 |
22718751
|
Nephrin gene silencing abolished the positive effects of WT-Dynamin on GSIR.
|
418 |
22718751
|
In conclusion, Dynamin-dependent Nephrin phosphorylation occurs in response to glucose and is necessary for Nephrin-mediated augmentation of GSIR.
|
419 |
22718751
|
Dynamin-mediated Nephrin phosphorylation regulates glucose-stimulated insulin release in pancreatic beta cells.
|
420 |
22718751
|
We have previously demonstrated a role for Nephrin in glucose stimulated insulin release (GSIR).
|
421 |
22718751
|
We now hypothesize that Nephrin phosphorylation is required for GSIR and that Dynamin influences Nephrin phosphorylation and function.
|
422 |
22718751
|
Immunoprecipitation experiments and overexpression of WT-Dynamin or dominant negative Dynamin mutant (K44A-Dynamin) in WT-Nephrin, 3YF-Nephrin, or Nephrin siRNA-transfected cells were utilized to study Nephrin-Dynamin interaction.
|
423 |
22718751
|
K44A-Dynamin prevented the effect of Nephrin on GSIR in the absence of protein-protein interaction between Nephrin and Dynamin.
|
424 |
22718751
|
Nephrin gene silencing abolished the positive effects of WT-Dynamin on GSIR.
|
425 |
22718751
|
In conclusion, Dynamin-dependent Nephrin phosphorylation occurs in response to glucose and is necessary for Nephrin-mediated augmentation of GSIR.
|
426 |
22718751
|
Dynamin-mediated Nephrin phosphorylation regulates glucose-stimulated insulin release in pancreatic beta cells.
|
427 |
22718751
|
We have previously demonstrated a role for Nephrin in glucose stimulated insulin release (GSIR).
|
428 |
22718751
|
We now hypothesize that Nephrin phosphorylation is required for GSIR and that Dynamin influences Nephrin phosphorylation and function.
|
429 |
22718751
|
Immunoprecipitation experiments and overexpression of WT-Dynamin or dominant negative Dynamin mutant (K44A-Dynamin) in WT-Nephrin, 3YF-Nephrin, or Nephrin siRNA-transfected cells were utilized to study Nephrin-Dynamin interaction.
|
430 |
22718751
|
K44A-Dynamin prevented the effect of Nephrin on GSIR in the absence of protein-protein interaction between Nephrin and Dynamin.
|
431 |
22718751
|
Nephrin gene silencing abolished the positive effects of WT-Dynamin on GSIR.
|
432 |
22718751
|
In conclusion, Dynamin-dependent Nephrin phosphorylation occurs in response to glucose and is necessary for Nephrin-mediated augmentation of GSIR.
|
433 |
23147865
|
RT-PCR and immunohistochemistry were used to detect the mRNA and protein levels of nephrin, podocin and heparanase (HPSE) in the kidney cortex of rats, respectively.
|
434 |
23147865
|
Treatment with arctiin significantly decreased the levels of 24-h urinary albumin, prevented the sclerosis of glomeruli and effectively restored the glomerular filtration barrier damage by up-regulating the expression of nephrin and podocin and down-regulating HPSE level.
|
435 |
23147865
|
The effects of arctiin on attenuating albuminuria and glomerulosclerosis are possibly mediated by regulating the expression of nephrin and podocin and HPSE in STZ-induced diabetic rats.
|
436 |
23147865
|
RT-PCR and immunohistochemistry were used to detect the mRNA and protein levels of nephrin, podocin and heparanase (HPSE) in the kidney cortex of rats, respectively.
|
437 |
23147865
|
Treatment with arctiin significantly decreased the levels of 24-h urinary albumin, prevented the sclerosis of glomeruli and effectively restored the glomerular filtration barrier damage by up-regulating the expression of nephrin and podocin and down-regulating HPSE level.
|
438 |
23147865
|
The effects of arctiin on attenuating albuminuria and glomerulosclerosis are possibly mediated by regulating the expression of nephrin and podocin and HPSE in STZ-induced diabetic rats.
|
439 |
23147865
|
RT-PCR and immunohistochemistry were used to detect the mRNA and protein levels of nephrin, podocin and heparanase (HPSE) in the kidney cortex of rats, respectively.
|
440 |
23147865
|
Treatment with arctiin significantly decreased the levels of 24-h urinary albumin, prevented the sclerosis of glomeruli and effectively restored the glomerular filtration barrier damage by up-regulating the expression of nephrin and podocin and down-regulating HPSE level.
|
441 |
23147865
|
The effects of arctiin on attenuating albuminuria and glomerulosclerosis are possibly mediated by regulating the expression of nephrin and podocin and HPSE in STZ-induced diabetic rats.
|
442 |
23476687
|
In addition, the protein expressions of renal nephrin and podocin in diabetic rats were significantly increased following the treatment with EEZZR.
|
443 |
23476687
|
This study suggested that the renoprotective effects of EEZZR may be similar, with the action of metformin, to the prevention of AMPK dephosphorylation and upregulate the expressions of renal nephrin and podocin.
|
444 |
23476687
|
In addition, the protein expressions of renal nephrin and podocin in diabetic rats were significantly increased following the treatment with EEZZR.
|
445 |
23476687
|
This study suggested that the renoprotective effects of EEZZR may be similar, with the action of metformin, to the prevention of AMPK dephosphorylation and upregulate the expressions of renal nephrin and podocin.
|
446 |
23710468
|
Compared to KK-a/a controls, 26-week-old KK-A (y) mice had elevated HbA1c, insulin, leptin, triglycerides, and cholesterol, and Unx further elevated these markers of metabolic dysregulation.
|
447 |
23710468
|
Consistent with functional and histological evidence of increased injury, fibrotic (fibronectin 1, MMP9, and TGF β 1) and inflammatory (IL-6, CD68) genes were markedly upregulated in Unx KK-A (y) mice, while podocyte markers (nephrin and podocin) were significantly decreased.
|
448 |
23950936
|
Plasma creatinine was higher in diabetic CTGF+/+ group (11.7±1.2 vs 7.9±0.6 µmol/L p<0.01), while urinary albumin excretion and mesangial expansion were reduced in diabetic CTGF+/- animals.
|
449 |
23950936
|
Cortices from diabetic mice (both CTGF +/+ and CTGF +/-) manifested higher expression of CTGF and thrombospondin 1 (TSP1).
|
450 |
23950936
|
Expression of nephrin was reduced in CTGF +/+ animals; this reduction was attenuated in CTGF+/- group.
|
451 |
23950936
|
In cultured MEF from CTGF+/+ mice, glucose (25 mM) increased expression of pro-collagens 1, IV and XVIII as well as fibronectin and thrombospondin 1 (TSP1).
|
452 |
23611540
|
Induction of diabetes significantly increased renal sEH expression and decreased the renal EETs/DHETEs (dihydroxyeicosatrienoic acid) ratio without affecting HO-1 activity or expression in SHR.
|
453 |
23611540
|
Inhibition of sEH with t-AUCB increased the renal EETs/DHETEs ratio and HO-1 activity in diabetic SHR; however, it did not significantly alter systolic blood pressure.
|
454 |
23611540
|
Treatment of diabetic SHR with t-AUCB significantly reduced the elevation in urinary albumin and nephrin excretion, whereas co-administration of the HO inhibitor SnMP with t-AUCB prevented these changes.
|
455 |
23611540
|
Immunohistochemical analysis revealed elevations in renal fibrosis as indicated by increased renal TGF-β (transforming growth factor β) levels and fibronectin expression in diabetic SHR and these changes were reduced with sEH inhibition.
|
456 |
23611540
|
In addition, SnMP treatment also prevented t-AUCB-induced decreases in renal macrophage infiltration, IL-17 expression and MCP-1 levels in diabetic SHR.
|
457 |
23611540
|
These findings suggest that HO-1 induction is involved in the protective effect of sEH inhibition against diabetic renal injury.
|