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Effects of α-lipoic acid on high-glucose induced transdifferentiation of human renal tubular epithelial cells
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- Author:
- No author available
- Journal Title:
- Chinese Journal of Diabetes
- Issue:
- 7
- DOI:
- 10.3969/j.issn.1006-6187.2013.07.023
- Key Word:
- 肾小管上皮细胞;转分化;α-硫辛酸;糖尿病慢性肾脏疾病;Renal tubular epithelial cell;Transdifferentiation;α-lipoic acid;Chronic kidney disease in diabetes(CKD)
Abstract： 目的 探讨α-硫辛酸(ALA)对高糖诱导的肾小管上皮细胞转分化的影响. 方法 体外培养人肾小管上皮细胞株(HKC)分别予正常糖(NG组)、高糖(HG组)、高糖+ALA(100、200、400μmol/L)组或高糖+甘露醇(M组)干预48 h；观察HKC细胞形态改变,RT-PCR检测结缔组织生长因子(CTGF)和α-平滑肌肌动蛋白(α-SMA) mRNA的表达,免疫荧光染色检测α-SMA蛋白表达. 结果 高糖刺激使HKC细胞由铺路石样变为梭形长条状；ALA干预可部分逆转高糖对HKC细胞形态的影响.HG组干预HKC细胞的CTGF及α-SMA mRNA表达水平较NG组增强,高糖+ALA组表达均较HG组减弱,且呈浓度依赖性(P＜0.01)；HG组α-SMA表达增强,NG组表达微弱,高糖+ALA组表达渐次减弱,差异均有统计学意义(P＜0.01)；M组上述指标与NG组比较差异均无统计学意义. 结论 ALA可阻断高糖诱导的肾小管上皮细胞转分化,对糖尿病慢性肾脏疾病(CKD)的防治可能具有一定作用.
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