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- W2318414969 abstract "Development of diabetic nephropathy is accompanied by changes in integrin-mediated cell-matrix interactions. The α8-integrin chain is specifically expressed in mesangial cells of the glomerulus. During experimental hypertension, α8-integrin plays a protective role in the glomerulus. We hypothesized that α8-integrin is involved in maintaining the integrity of the glomerulus in diabetic nephropathy. Experimental streptozotocin (STZ) diabetes led to an increased expression and glomerular deposition of α8-integrin. To test the functional role of α8-integrin, STZ diabetes was induced in mice with a homozygous (α8−/−) or heterozygous (α8+/−) deletion of the α8-integrin gene and in wild-type litters (α8+/+). Blood glucose and mean arterial blood pressure were not different in α8−/− and α8+/+ mice after 6 wk of diabetes. However, diabetic α8−/− mice developed significantly higher albuminuria and more glomerulosclerosis than diabetic α8+/+ mice. Moreover, in diabetic α8−/− mice, the number of glomerular cells staining positive for the podocyte markers WT-1 and vimentin were reduced more prominently than in diabetic α8+/+. The filtration barrier protein nephrin was downregulated in diabetic glomeruli with the strongest reduction observed in α8−/− mice. Taken together, α8−/− mice developed more severe glomerular lesions and podocyte damage after onset of STZ diabetes than α8+/+ mice, indicating that α8-integrin is protective for the structure and function of the glomerulus and maintains podocyte integrity during the development of diabetic nephropathy." @default.
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- W2318414969 date "2010-11-01" @default.
- W2318414969 modified "2023-09-27" @default.
- W2318414969 title "Lack of α8-integrin aggravates podocyte injury in experimental diabetic nephropathy" @default.
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- W2318414969 doi "https://doi.org/10.1152/ajprenal.00058.2010" @default.
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