4.7 Article

Caloric restriction increases levels of taurine in the intestine and stimulates taurine uptake by conjugation to glutathione

期刊

出版社

ELSEVIER SCIENCE INC
DOI: 10.1016/j.jnutbio.2021.108781

关键词

Caloric restriction; Bile acids; Taurine; Glutathione; Intestine

资金

  1. University of Vienna

向作者/读者索取更多资源

In the study, it was found that caloric restriction led to increased levels of free taurine and taurine conjugates in the intestine, along with increased GST enzymatic activity and gene expression in the gastrointestinal tract. Additionally, the levels of free GSH were decreased in the intestine of caloric restriction mice compared to ad libitum fed mice, while levels of oxidized GSH were not affected.
Our previous study indicated increased levels of taurine-conjugated bile acids (BA) in the intestine content of mice submitted to caloric restriction (CR). In the current project, we found increased levels of free taurine and taurine conjugates, including glutathione (GSH)-taurine, in CR compared to ad libitum fed animals in the mucosa along the intestine but not in the liver. The levels of free GSH were decreased in the intestine of CR compared to ad libitum fed mice. However, the levels of oxidized GSH were not affected and were complemented by the lack of changes in the antioxidative parameters. Glutathione-S transferases (GST) enzymatic activity was increased as was the expression of GST genes along the gastrointestinal tract of CR mice. In the CR intestine, addition of GSH to taurine solution enhanced taurine uptake. Accordingly, the expression of taurine transporter (TauT) was increased in the ileum of CR animals and the levels of free and BA-conjugated taurine were lower in the feces of CR compared to ad libitum fed mice. Fittingly, BA-and GSH-conjugated taurine levels were increased in the plasma of CR mice, however, free taurine remained unaffected. We conclude that CR-triggered production and release of taurine-conjugated BA in the intestine results in increased levels of free taurine what stimulates GST to conjugate and enhance uptake of taurine from the intestine. (c) 2021 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY license ( http://creativecommons.org/licenses/by/4.0/ )

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据