JCEM:肠道菌群多样性高的个体乳腺癌风险低

2014-09-17 伊文 生物谷

近日,来自美国国家癌症研究所的研究人员通过研究表示,绝经后女性如果机体中携带有多样化的肠道菌群,那么其机体的雌激素代谢产物或许对其健康更加有益,相关研究刊登于国际杂志Journal of Clinical Endocrinology &Metabolism (JCEM)上。 从20世纪70年代开始,科学家们就通过研究发现,构成肠道微生物组的肠道细菌会影响女性机体雌激素的功能,雌激素是

近日,来自美国国家癌症研究所的研究人员通过研究表示,绝经后女性如果机体中携带有多样化的肠道菌群,那么其机体的雌激素代谢产物或许对其健康更加有益,相关研究刊登于国际杂志Journal of Clinical Endocrinology &Metabolism (JCEM)上。

从20世纪70年代开始,科学家们就通过研究发现,构成肠道微生物组的肠道细菌会影响女性机体雌激素的功能,雌激素是女性机体最原始的性激素;肠道细菌的定殖会决定雌激素产生后是存留在机体内还是会随着尿液和粪便而排出体外,此前研究显示,循环在机体中的雌激素和其代谢产物的水平和女性绝经后患乳腺癌的风险直接相关。

研究者James Goedert表示,相比肠道菌群多样性较低的女性来讲,那些机体肠道菌群多样化的女性,其机体中的雌激素的代谢产物存留的水平往往较高,这就暗示了含有较高水平雌激素的女性患乳腺癌的风险会降低。随后研究人员对招募的60名绝经女性进行研究,分析了其尿液和粪便样品,这些女性的年龄都在55至69岁之间,在研究前的6至8周研究人员对其进行了乳房x光检查,结果显示正常;对尿液和粪便样品分析后研究人员表示,机体肠道菌群的多样性和雌激素片段的比率直接相关,而后者则是乳腺癌的一个指示器。

Goedert说道,我们的研究揭示了个体肠道菌群多样性和其患乳腺癌风险的关系,个体肠道菌群多样性往往可以通过饮食或者某些药物来改善,后期我们还需要对更多的女性群体进行深入研究,我们希望未来可以通过改善个体的肠道微生物组来帮助开发靶向预防乳腺癌的新型策略。

原始出处

Fuhrman BJ1, Spencer Feigelson H, Flores R, Gail MH, Xu X, Ravel J, Goedert JJ.Associations of the Fecal Microbiome With Urinary Estrogens and Estrogen Metabolites in Postmenopausal Women.J Clin Endocrinol Metab. 2014 Sep 11

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    2015-01-14 sjq027
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    2015-05-30 smallant2015
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