CELL:摄入可溶性纤维增加肝癌风险

2018-10-21 海北 MedSci原创

膳食可溶性纤维通过肠道细菌发酵成短链脂肪酸(SCFA),广泛被认为可以促进健康。人们还认为,这种纤维的消耗改善了代谢综合征。

膳食可溶性纤维通过肠道细菌发酵成短链脂肪酸(SCFA),广泛被认为可以促进健康。人们还认为,这种纤维的消耗改善了代谢综合征

然而,将可溶性纤维菊粉,但不是不溶性纤维,掺入组成定义的饮食中,可以诱导黄疸型肝细胞癌(HCC)。这种HCC是微生物群依赖性的,并且可以在多种生理小鼠品系中观察到,但在无菌或抗生素处理的小鼠中没有观察到。

此外,富含菊粉的高脂肪饮食的消耗在野生型(WT)小鼠中诱导了微生物生态失调和HCC。菊粉诱导的HCC通过胆汁淤积的早期发作,肝细胞死亡,以及肝脏中中性粒细胞的炎症得以发展。发酵的药理学抑制或发酵细菌的消耗显着减少了肠SCFA,并且预防HCC

用消胆胺进行干预以防止胆汁酸的重吸收也赋予了对这种HCC的保护作用。

因此,尽管有其益处,我们应该非常谨慎地处理富含可发酵纤维的食物,因为它可能增加HCC的风险。


原始出处:

Singh V et al. Dysregulated Microbial Fermentation of Soluble Fiber Induces Cholestatic Liver CancerCELL, 2018; DOI: 10.1016/j.cell.2018.09.004.


本文系梅斯医学(MedSci)原创编译整理,转载需授权

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    2019-07-14 维他命
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    2018-11-17 sjq027
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