细胞凋亡在急性坏死型胰腺炎早期肠黏膜上皮细胞死亡中的作用

被引：24

作者：

王兴鹏

王冰娴

吴恺

徐选福

机构：

[1] 上海市第一人民医院消化科、消化病研究室

来源：

中华消化杂志 | 2001年 / 05期

关键词：

急性胰腺炎; 肠黏膜屏障; 细胞凋亡;

D O I：

暂无

中图分类号：

R657.51 [];

学科分类号：

摘要：

目的　观察急性坏死型胰腺炎 (ANP)大鼠早期肠黏膜上皮细胞凋亡的发生及其演变规律 ,探讨其在肠黏膜屏障功能障碍中的作用。方法　Spraque Dawley大鼠 48只 ,采用胆胰管内逆行注入5 %牛磺胆酸钠溶液诱导大鼠ANP模型。假手术组 (shamoperation ,SO)大鼠仅作剖腹术。术后 3、6、12和 2 4h分批处死大鼠 ,取末端回肠组织 ,分别应用DNA琼脂糖凝胶电泳 ,异硫氰基荧光素 (FITC)结合的Annexin V和碘化丙啶 (PI)标记细胞作流式细胞仪 (FCM)检测和免疫组化 (TUNEL法 )等技术 ,研究ANP大鼠肠黏膜上皮细胞凋亡。结果　DNA琼脂糖凝胶电泳结果显示 ,SO组仅于 12h出现“梯形(ladder)”条带 ;ANP大鼠 ,各时点均可见“梯形”条带。FCM检测结果表明 ,术后 3、6、12和 2 4hSO组肠黏膜上皮脱落细胞凋亡比例分别为 (5 3 .7± 3 .7) %、(2 7.6± 6 .0 ) %、(39.0± 4.8) %和 (2 9.0± 11.3) % ;ANP组分别为 (5 0 .3± 11.3) %、(79.7± 9.2 ) %、(4 7.8± 17.3) %和 (4 9.6± 9.5 ) % ,术后 6h达峰值 ,且较SO组明显增高 (P <0 .0 1) ,凋亡与坏死细胞 (A/N)比值为 2 7.7± 17.9。TUNEL法显示 ,凋亡细胞呈细胞核固缩、断片状 ,术后 3、6、12和 2 4hSO组凋亡指数为 6 .2± 2 .4、7.5± 1.7、10 .5± 0 .9和 5 .3± 0 .8;ANP组为 1

引用

页码：7 / 10

页数：4

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