Pharmacologic and Nonpharmacologic Therapies for the Gut Microbiota in Type 2 Diabetes
Abstract
The gut microbiota is an important regulator of host metabolism. Metagenome analyses have demonstrated that the gut microbiota differs between patients with type 2 diabetes and healthy subjects, and several studies have shown that impaired glucose metabolism is associated with decreased levels of butyrate-producing bacteria. Gut microbiota-produced metabolites, such as short-chain fatty acids, amino acid derivatives and secondary bile acids, participate in metabolic and immunologic processes and, hence, pose putative links between the gut microbiota and glucose homeostasis. Strategies to prevent and treat type 2 diabetes through manipulation of the gut microbiota are being developed. These include replacement of the gut microbiota by fecal transplantation, consumption of fibres to promote the function and growth of beneficial bacteria and treatment with probiotic bacterial strains. Furthermore, it has been shown that many drugs, including drugs used for treatment of diabetes, have major impacts on gut microbiota and, thereby, potentially on glucose metabolism. In particular, the commonly used drug metformin has been shown to influence the functional capacity of the gut microbiota, and recent evidence indicates that this may contribute to the antidiabetes effect of metformin.
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