期刊
FRONTIERS IN ENDOCRINOLOGY
卷 12, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fendo.2021.761834
关键词
type 2 diabetes (T2D); microbiota; butyrate; metabolic disease; short chain fatty acids (SCFAs)
资金
- Novo Nordisk Foundation [NNF15OC0016798]
Metagenomics studies have linked type 2 diabetes with altered gut microbiota, particularly a reduction in butyrate-producing bacteria. Current treatment strategies aim to increase butyrate levels in the gut, but long-term improvements in glycemic control have not been reported yet. Further studies are needed to explore effective approaches in restoring butyrate-producing bacteria and levels in the human gut, and their impact on glucose regulation in type 2 diabetes.
Metagenomics studies have shown that type 2 diabetes (T2D) is associated with an altered gut microbiota. Whereas different microbiota patterns have been observed in independent human cohorts, reduction of butyrate-producing bacteria has consistently been found in individuals with T2D, as well as in those with prediabetes. Butyrate is produced in the large intestine by microbial fermentations, particularly of dietary fiber, and serves as primary fuel for colonocytes. It also acts as histone deacetylase inhibitor and ligand to G-protein coupled receptors, affecting cellular signaling in target cells, such as enteroendocrine cells. Therefore, butyrate has become an attractive drug target for T2D, and treatment strategies have been devised to increase its intestinal levels, for example by supplementation of butyrate-producing bacteria and dietary fiber, or through fecal microbiota transplant (FMT). In this review, we provide an overview of current literature indicating that these strategies have yielded encouraging results and short-term benefits in humans, but long-term improvements of glycemic control have not been reported so far. Further studies are required to find effective approaches to restore butyrate-producing bacteria and butyrate levels in the human gut, and to investigate their impact on glucose regulation in T2D.
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