姜黄素对大鼠环孢素A肾间质纤维化的保护作用
2018-08-31王润秀汪国平曹春瑜李伟松谢富华
王润秀 汪国平 曹春瑜 李伟松 谢富华
[摘要]目的 探讨姜黄素(Cur)对环孢素A(CsA)而致的大鼠肾间质纤维化的保护作用及其可能的分子机制。方法 将18只SD大鼠随机分为对照组(Ctrl组,n=6)、CsA组(n=6)和CsA+Cur组(n=6),分别给予橄榄油、CsA、CsA联合Cur处理。通过测量大鼠的体重、取血测尿素氮和肌酐、肾组织病理学检查等指标观察Cur对动物肾间质纤维化的改善作用。通过检测大鼠肾组织超氧化物歧化酶(SOD)活性及丙二醛(MDA)含量反映其ROS水平。采用分子生物学方法检测肾组织转化生长因子-β(TGF-β)的表达情况。结果 CsA组动物相对于Ctrl组,体重下降(P<0.05),血尿素氮和肌酐水平显著上升(P<0.05),肾组织TGF-β表达上调(P<0.05),ROS水平上升,病理学表现为轻度间质纤维化,但同时给予Cur可以在一定程度上缓解上述表现。结论 Cur对CsA而致的大鼠肾间质纤维化具有一定的保护作用,其分子机制可能是降低体内ROS水平和下调TGF-β表达。
[关键词]姜黄素;环孢素A;肾间质纤维化
[中图分类号] R332 [文献标识码] A [文章編号] 1674-4721(2018)5(b)-0009-04
Protective effect of Curcumin on the renal interstitial fibrosis of rat by Cyclosporin A
WANG Run-xiu1 WANG Guo-ping1 CAO Chun-yu1 LI Wei-song2 XIE Fu-hua3
1.Department of Nephrology,the First Affiliated Hospital of Gannan Medical University,Jiangxi Province,Ganzhou 341000,China;2.Department of Pathology,the First Affiliated Hospital of Gannan Medical University,Jiangxi Province,Ganzhou 341000,China;3.Experimental Teaching Center for Analysis and Testing,Gannan Medical University,Jiangxi Province,Ganzhou 341000,China
[Abstract]Objective To investigate the protective effects of Curcumin (Cur) on the renal interstitial fibrosis induced by CsA and reveal the underlying molecular mechanisms.Methods 18 SD rats were randomly divided into control group (Ctrl group,n=6),CsA group (n=6) and group CsA+Cur group (n=6) and the above-mentioned groups was treated with olive oil,CsA and CsA combined with Cur respectively.The effect of Cur on renal interstitial fibrosis in rats were observed by measuring body weight,blood urea nitrogen and creatinine,and histopathological examination.The level of ROS was detected by detecting SOD activity and MDA content in rat kidney tissue.The expression of transforming growth factor beta (TGF-β) in renal tissue was detected by molecular biology.Results Compared with ctrl group,weights of rats in CsA group decreased obviously (P<0.05),and the level of blood urea nitrogen and creatinine increased significantly (P<0.05),and the expression of TGF-β increased significantly (P<0.05).The level of ROS increased, and the pathological findings were mild interstitial fibrosis.However,giving Cur at the same time could alleviate the above symptoms to some extent.Conclusion Cur has a some protective effect on the renal interstitial fibrosis which induced by CsA,and its molecular mechanism may be down-regulating the expression of TGF-β and the level of ROS.
[Key words]Curcumin;Cyclosporin A;Renal interstitial fibrosis
环孢素A(CsA)在各种肾脏疾病如难治性肾病综合征、自身免疫性疾病、各种器官移植或骨髓移植术后应用广泛,它能显著延缓慢性肾脏病的进展,改善患者的生活质量并延长生命[1-5]。然而,长期和广泛使用CsA却会所造成肾脏的慢性结构性损害即肾间质纤维化[6-7]。不过,近来有研究表明,从姜黄中提取的酚类物质姜黄素(curcumin,Cur)具有清除氧自由基(reactive oxygen species,ROS)、抗纤维化、抗细胞增殖和抗炎等作用,不仅对缺血再灌注肾损害、氧化应激诱导的肾损害等均具有很好的保护作用,而且长期应用无明显毒副作用[8-10]。超氧化物歧化酶(SOD),广泛存在于动植物组织细胞中,是重要的生物抗氧化系统。丙二醛(MDA)是生物体内氧自由基作用于脂质的代谢产物,检测组织中SOD活性和MDA水平可间接反映其ROS水平的高低[11-12]。本研究探讨Cur是否对CsA引起的肾间质纤维化具有保护作用及其可能的分子机制。……
