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JCEM:BMI相关的血浆代谢产物谱与肠道微生物有何关联?

2018-02-09 MedSci MedSci原创

目前越来越多的证据表明肠道微生物和循环代谢产物与人类肥胖相关。肠道微生物负责集中代谢功能,而血浆中代谢产物的改变可能可以反应肠道微生物的差异。近日在JCEM上发表的一篇文章则研究了普通人群中与BMI相关的血浆代谢物谱,并研究了这种代谢物谱与肠道微生物组成不同是否有关。

目前越来越多的证据表明肠道微生物和循环代谢产物与人类肥胖相关。肠道微生物负责集中代谢功能,而血浆中代谢产物的改变可能可以反应肠道微生物的差异。近日在JCEM上发表的一篇文章则研究了普通人群中与BMI相关的血浆代谢物谱,并研究了这种代谢物谱与肠道微生物组成不同是否有关。

研究人员利用靶向液相色谱-质谱法对920名瑞典成年人(平均年龄39岁,53%女性)测试了靶向48种血浆代谢物,。并对674名参与者的粪便通过16S rRNA基因(V1-V3区)的测序分析肠道微生物群。

研究结果显示BMI与19种代谢物有关(所有p<0.001),其中谷氨酸显示出最强的直接关联(p = 5.2e-53)。通过正交偏最小二乘回归建立BMI预测的代谢物主成分(PCBMI)。除了谷氨酸,PCBMI主要由支链氨基酸(BCAA)和相关的代谢物。与BMI和PCBMI都相关的有四种肠道微生物属(L.blautia,L.dorea,L.ruminococcus和SHA-98)(所有P <8.0e-4)。当同时抑制PCBMI和与BMI相抗的代谢相关的肠道细菌时,只有PCBMI保持显着。

上述研究发现四种肠道微生物属(L.blautia,L.dorea,L.ruminococcus和SHA-98)与BMI预测性血浆代谢物(包括谷氨酸和BCAAs)之间的关联。这表明这些代谢物可能是肠道微生物群与肥胖之间的介质,那么将来可能通过肠道微生物群来预防肥胖。

原始出处:

Filip Ottosson.et al. Connection between BMI related plasma metabolite profile and gut microbiota. J Clin Endocrinol Metab. 2017.

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    2018-08-14 smallant2015
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    2018-06-24 achengzhao
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    2018-02-10 衣带渐宽

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