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Resveratrol induces mitochondrial DNA repair enzyme downregulation and promotes pancreatic acinar cell apoptosis in rats with severe acute pancreatitis
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- Author:
- No author available
- Journal Title:
- WORLD CHINESE JOURNAL OF DIGESTOLOGY
- Issue:
- 28
- DOI:
- No doi available
- Key Word:
- 白藜芦醇;重症急性胰腺炎;凋亡;8-氧鸟嘌呤DNA糖基化酶;线粒体
Abstract： 目的:观察白藜芦醇对重症急性胰腺炎(SAP)胰腺细胞凋亡的影响,探讨线粒体凋亡通路及线粒体DNA修复酶OGG1与SAP腺泡细胞凋亡的关系.方法:30只SD大鼠随机分为假手术组(Sham组,只行开腹术,n=10),SAP模型组(SAP组,胆管逆行性注射牛黄胆酸钠制备SAP模型,n=10),白藜芦醇治疗组(Res组,SAP模型制作成功后,注射白藜芦醇溶液,n=10).测定各组血清淀粉酶,caspase-3,-9活性,高压液相色谱法测定线粒体DNA 8-氧鸟嘌呤(8-oxodG)含量,罗丹明123法测定线粒体膜电位,流式细胞法检测胰腺腺泡细胞凋亡,Western blot法测定细胞色素C释放及线粒体OGG1蛋白表达,并对胰腺组织进行病理学评分.结果:Res组与SAP组比较,血清胰淀粉酶、线粒体膜电位、线粒体OGG1蛋白表达量及胰腺病理损害评分显著降低(4761.98±501.45 vs7428.91±526.49,18.42±2.04 vs 22.01±2.93,73.97±6.49 vs 159.46±12.85.5.74±0.95 vs12.95±1.54,均P<0.05).胰腺腺泡细胞凋亡指数、线粒体细胞色素C释放、线粒体DNA8-oxodG含量及caspase-3,-9的活性显著升高(19.63±2.07 vs 12.45±1.93,174.31±15.93 vs100±0.00,0.0590±0.074 vs 0.0336±0.0061,2.37±0.35 vs 1.95±0.19.2.07±0.25 vs 1.62±0.15,均P<0.05).结论:白藜芦醇通过下调胰腺腺泡细胞线粒体DNA修复酶OGG1,增加SAP胰腺腺泡细胞凋亡以减轻胰腺组织病理损害,对SAP具有治疗意义.
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