Open Access

Resveratrol ameliorates diabetic nephropathy in rats through negative regulation of the p38 MAPK/TGF-β1 pathway

  • Authors:
    • Yuan Qiao
    • Ke Gao
    • Yangwei Wang
    • Xueliang Wang
    • Bo Cui
  • View Affiliations

  • Published online on: May 4, 2017     https://doi.org/10.3892/etm.2017.4420
  • Pages: 3223-3230
  • Copyright: © Qiao et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Resveratrol (RSV) has been shown to have a renoprotective effect against diabetic nephropathy, but the underlying mechanisms of this have not been fully elucidated. The aim of the current study was to explore the mechanisms responsible for the therapeutic effects of RSV in rat mesangial cells in vitro and in a rat model of diabetic nephropathy. The viability of CRL‑2573 rat mesangial cells and their expression levels of p38, phosphorylated (p)‑p38, transforming growth factor beta 1 (TGF‑β1) and fibronectin were assessed in response to treatment with high glucose, with or without RSV. Diabetic nephropathy was also induced in Sprague‑Dawley rats by streptozotocin treatment. At 8 weeks, basic biochemical parameters and histopathological abnormalities as well as the expression of p38, p‑p38, TGF-β1 and fibronectin in rat kidneys were compared between control diabetic rats and those treated with 20 mg/kg RSV daily for 4 weeks. In the mesangial cell line, RSV inhibited high glucose‑induced increases in cell viability and fibronectin expression by significantly reducing p38 mitogen‑activated protein kinase (MAPK) activation and TGF‑β1 expression (P<0.05). In diabetic rats, RSV significantly decreased blood glucose, serum creatinine and urinary albumin levels, as well as the kidney weight and ratio of kidney weight/body weight compared with the control group (P<0.05). Moreover, RSV ameliorated renal histological changes and downregulated the expression of p‑p38, TGF‑β1 and fibronectin in the kidneys of diabetic rats. These data suggested that RSV protected renal tissue from diabetes‑induced injury and that this activity may be via inhibition of the p38 MAPK/TGF‑β1 signaling pathway.

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June-2017
Volume 13 Issue 6

Print ISSN: 1792-0981
Online ISSN:1792-1015

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Spandidos Publications style
Qiao Y, Gao K, Wang Y, Wang X and Cui B: Resveratrol ameliorates diabetic nephropathy in rats through negative regulation of the p38 MAPK/TGF-β1 pathway. Exp Ther Med 13: 3223-3230, 2017
APA
Qiao, Y., Gao, K., Wang, Y., Wang, X., & Cui, B. (2017). Resveratrol ameliorates diabetic nephropathy in rats through negative regulation of the p38 MAPK/TGF-β1 pathway. Experimental and Therapeutic Medicine, 13, 3223-3230. https://doi.org/10.3892/etm.2017.4420
MLA
Qiao, Y., Gao, K., Wang, Y., Wang, X., Cui, B."Resveratrol ameliorates diabetic nephropathy in rats through negative regulation of the p38 MAPK/TGF-β1 pathway". Experimental and Therapeutic Medicine 13.6 (2017): 3223-3230.
Chicago
Qiao, Y., Gao, K., Wang, Y., Wang, X., Cui, B."Resveratrol ameliorates diabetic nephropathy in rats through negative regulation of the p38 MAPK/TGF-β1 pathway". Experimental and Therapeutic Medicine 13, no. 6 (2017): 3223-3230. https://doi.org/10.3892/etm.2017.4420