The role of gut microbiota and amino metabolism in the effects of improvement of islet β-cell function after modified jejunoileal bypass.

The role of gut microbiota and amino metabolism in the effects of improvement of islet β-cell function after modified jejunoileal bypass.
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肠道微生物群和氨基酸代谢在改良空肠旁路术后胰岛β细胞功能改善中的作用

DOI:
10.1038/s41598-021-84355-x
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发表时间:
2021-02-26
期刊:
影响因子:
4.6
通讯作者:
Duan J
Duan J
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Tan C;Zheng Z;Wan X;Cao J;Wei R;Duan J

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肠道菌群的改变是减肥手术后2型糖尿病(T2 DM)改善的重要机制。在此,我们观察到改良空回肠旁路术有效地降低了体重增加、空腹血糖和血清中的脂质水平;此外,胰岛β细胞功能、糖耐量和胰岛素抵抗显著改善。降糖作用和胰岛β细胞功能的改善取决于肠道微生物群结构的变化。改良空回肠转流可提高2型糖尿病大鼠肠道大肠埃希菌和反刍兽球菌的丰度及血清甘氨酸、组氨酸和谷氨酰胺水平,降低猪普雷沃氏菌的丰度及血清支链氨基酸水平,这与改善2型糖尿病大鼠胰岛β细胞功能显著相关。我们的研究结果表明,氨基酸代谢可能有助于改善T2 DM大鼠改良空回肠转流后的胰岛β细胞功能,改善肠道微生物群组成是T2 DM的潜在治疗策略。
The change in gut microbiota is an important mechanism of the amelioration of type 2 diabetes mellitus (T2DM) after bariatric surgery. Here, we observe that the modified jejunoileal bypass effectively decreases body weight gain, fasting blood glucose, and lipids level in serum; additionally, islet β-cell function, glucose tolerance, and insulin resistance were markedly ameliorated. The hypoglycemic effect and the improvement in islet β-cell function depend on the changes in gut microbiota structure. modified jejunoileal bypass increases the abundance of gutEscherichia coliandRuminococcus gnavusand the levels of serum glycine, histidine, and glutamine in T2DM rats; and decreases the abundance ofPrevotella copriand the levels of serum branched chain amino acids, which are significantly related to the improvement of islet β-cell function in T2DM rats. Our results suggest that amino acid metabolism may contribute to the islet β-cell function in T2DM rats after modified jejunoileal bypass and that improving gut microbiota composition is a potential therapeutic strategy for T2DM.
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