目的:通过小鼠模型试验,探讨姜黄素对肥胖相关性肾小球病( ORG)的防治作用。方法:21只C57BL/6J雄性小鼠被随机分为对照组、ORG模型组及姜黄素干预组进行试验。在光镜下用计算机图像分析软件测量肾小球直径,用实时定量聚合酶链反应和Western印迹试验分别检测mRNA及蛋白表达。结果:与对照组相比,模型组小鼠体重、Lee指数、腹腔脂肪指数、尿蛋白定量、肾小球平均直径均显著增加;nephrin、podocin、podoplanin、podocalyxin的mRNA和蛋白表达均显著降低;肾组织Wnt1、Wnt2b、Wnt6及β-catenin的mRNA表达均显著上调;β-catenin蛋白的磷酸化水平显著下降。而姜黄素干预能够有效拮抗上述全部反应。结论:姜黄素能通过抑制Wnt/β-catenin信号通路激活而减轻肥胖及其肾损伤。
Objective:To study the effects of Curcumin intervention on mouse model of obesity related glomerulopathy (ORG). Methods:Twenty one male C57BL/6J mice were randomly divided into control group(CG),ORG model group(MG)and Curcumin intervention group. Glomerular diameters were measured by light microscopy. mRNA and protein expression was detected by real-time quantitative PCR and Western blotting,respectively. Results:Compared with the CG,body weight,Lee’s index,abdomi-nal fat index,urinary protein excretion,glomerular average diameter all were significantly increased in MG(P〈0. 05 or 0. 01);Nephrin、podocin、podoplanin、podocalyxin mRNA and protein levels all were significantly decreased in MG( P 〈0. 05 );Wnt1, Wnt2b,Wnt6 andβ-catenin mRNA expression of renal tissue was significantly up-regulated and phosphorylation level ofβ-cate-nin protein was significantly reduced in MG(P〈0. 05). Curcumin intervention effectively antagonized the all above reactions(P〈0. 05). Conclusion:Curcumin can relieve obesity and ORG by means of inhibition of Wnt/β-catenin signaling activation.