Carcinogenicity of deoxycholate, a secondary bile acid.

Carcinogenicity of deoxycholate, a secondary bile acid.
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DOI:
10.1007/s00204-011-0648-7
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发表时间:
2011-08
影响因子:
6.1
通讯作者:
Bernstein, Harris
Bernstein, Harris
中科院分区:
医学2区
文献类型:
--
作者:
Bernstein, Carol;Holubec, Hana;Bhattacharyya, Achyut K.;Huy Nguyen;Payne, Claire M.;Zaitlin, Beryl;Bernstein, Harris

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饮食中的高脂肪会导致胆汁酸分泌增加,进入胃肠道,并与结肠癌有关。鉴于胆汁酸去氧胆酸(DOC)在结肠癌病因学中有重要作用,本研究探讨了高生理水平的DOC是否可能是结肠癌致癌物。在18只野生型小鼠的日粮中添加0.2% DOC,持续8-10个月,诱导17只小鼠出现结肠肿瘤,其中10只小鼠发生癌变。在doc补充饲料中添加0.007%的抗氧化剂绿原酸可显著减少肿瘤的形成。这些结果表明,与结肠癌风险增加相关的人类高脂肪饮食可能通过胆汁酸的作用介导其致癌潜力,一些饮食中的抗氧化剂可能会改善这种致癌性。
High dietary fat causes increased bile acid secretion into the gastrointestinal tract and is associated with colon cancer. Since the bile acid deoxycholic acid (DOC) is suggested to be important in colon cancer etiology, this study investigated whether DOC, at a high physiologic level, could be a colon carcinogen. Addition of 0.2% DOC for 8–10 months to the diet of 18 wild-type mice induced colonic tumors in 17 mice, including 10 with cancers. Addition of the antioxidant chlorogenic acid at 0.007% to the DOC-supplemented diet significantly reduced tumor formation. These results indicate that a high fat diet in humans, associated with increased risk of colon cancer, may have its carcinogenic potential mediated through the action of bile acids, and that some dietary anti-oxidants may ameliorate this carcinogenicity.
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发表时间: 1990-05-01
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