Secondary bile acids: an underrecognized cause of colon cancer.

Secondary bile acids: an underrecognized cause of colon cancer.
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DOI:
10.1186/1477-7819-12-164
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发表时间:
2014-05-24
影响因子:
3.2
通讯作者:
Shamseddine A
Shamseddine A
中科院分区:
医学3区
文献类型:
--
作者:
Ajouz H;Mukherji D;Shamseddine A

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胆汁酸在1939年首次被认为是致癌物质。从那时起,越来越多的证据表明,胃肠道细胞暴露与反复高生理水平的胆汁酸有关,胆汁酸是胃肠道癌症的重要风险因素。胆汁酸的高暴露可能发生在许多环境中,但最重要的是,在饮食脂肪摄入量较高的个人中普遍存在。高胆汁酸暴露对细胞的快速影响是产生活性氧和活性氮,破坏细胞膜和线粒体,诱导DNA损伤、突变和凋亡,以及在长期暴露时细胞凋亡能力降低。在这里,我们回顾了次级胆汁酸的机制及其在结肠癌中的作用的大量证据。
Bile acids were first proposed as carcinogens in 1939. Since then, accumulated evidence has linked exposure of cells of the gastrointestinal tract to repeated high physiologic levels of bile acids as an important risk factor for gastrointestinal cancers. High exposure to bile acids may occur in a number of settings, but most importantly, is prevalent among individuals who have a high dietary fat intake. A rapid effect on cells of high bile acid exposure is the generation of reactive oxygen species and reactive nitrogen species, disruption of the cell membrane and mitochondria, induction of DNA damage, mutation and apoptosis, and development of reduced apoptosis capability upon chronic exposure. Here, we review the substantial evidence of the mechanism of secondary bile acids and their role in colon cancer.
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