外源性硫化氫對(duì)糖尿病腎病大鼠腎纖維化的影響及機(jī)制
[Abstract]:Objective to investigate the effect and mechanism of exogenous hydrogen sulfide (H 2S) on renal fibrosis in diabetic nephropathy rats. Methods 27 healthy male SD rats were injected with streptozotocin (STZ) to establish diabetic nephropathy model after 8 weeks. Twenty diabetic nephropathy model rats and 20 normal rats were divided into normal control group (Control saline group), H2S control group (Control Na HS group), model group (DN saline group), H2S treatment group (DN Na HS group), 10 rats in each group. Rats in DN saline group and Control Na HS group were intraperitoneally injected with 100 渭 mol/ (kg d), NaHS solution. The Control saline group and DN saline group were given intraperitoneal injection of the same amount of normal saline. After 8 weeks, 24 h urine was collected, 24 h urine protein was measured by Coomassie brilliant blue G-250 method (24 h Upro); heart blood was collected, serum urea nitrogen (BUN), creatinine (Scr) was detected by automatic biochemical analyzer, renal tissue was taken. The expression of transforming growth factor 尾 1 (TGF- 尾 1) Smad7 protein in renal tissue was detected by HE staining and Western blotting. The expression of fibronectin (FN), laminin (LN),) and smooth muscle actin (SMA) was detected by immunohistochemistry. Results compared with Control saline group, the BUNS SCR and 24 h Upro in DN saline group were higher than those in Control saline group (P 0. 05). Compared with DN saline group, the expression of Smad7 protein decreased at 24 h (P 0.05), and the pathological damage of kidney was alleviated. The expression of FNLN, -SMA-TGF- 尾 1 and TGF- 尾 1 protein were down-regulated (P 0.05) and Smad7 protein was upregulated (all P 0.05). Conclusion exogenous H 2S can significantly improve renal fibrosis in diabetic nephropathy rats, and its mechanism may be related to the regulation of TGF- 尾 1/Smad7 signaling pathway.
【作者單位】: 西南醫(yī)科大學(xué)附屬醫(yī)院;
【基金】:四川省科學(xué)技術(shù)廳-瀘州市人民政府-瀘州醫(yī)學(xué)院聯(lián)合科研專項(xiàng)資金資助項(xiàng)目(0903-100020802)
【分類號(hào)】:R587.2;R692.9
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