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Causal relationships among the gut microbiome, short-chain fatty acids and metabolic diseases
- Source :
- Nature Genetics; 600; 605; 1061-4036; 4; 51; ~Nature Genetics~600~605~~~1061-4036~4~51~~
- Publication Year :
- 2019
-
Abstract
- Contains fulltext : 202884.pdf (publisher's version ) (Closed access)<br />Microbiome-wide association studies on large population cohorts have highlighted associations between the gut microbiome and complex traits, including type 2 diabetes (T2D) and obesity(1). However, the causal relationships remain largely unresolved. We leveraged information from 952 normoglycemic individuals for whom genome-wide genotyping, gut metagenomic sequence and fecal short-chain fatty acid (SCFA) levels were available(2), then combined this information with genome-wide-association summary statistics for 17 metabolic and anthropometric traits. Using bidirectional Mendelian randomization (MR) analyses to assess causality(3), we found that the host-genetic-driven increase in gut production of the SCFA butyrate was associated with improved insulin response after an oral glucose-tolerance test (P = 9.8 x 10(-5)), whereas abnormalities in the production or absorption of another SCFA, propionate, were causally related to an increased risk of T2D (P = 0.004). These data provide evidence of a causal effect of the gut microbiome on metabolic traits and support the use of MR as a means to elucidate causal relationships from microbiome-wide association findings.
Details
- Database :
- OAIster
- Journal :
- Nature Genetics; 600; 605; 1061-4036; 4; 51; ~Nature Genetics~600~605~~~1061-4036~4~51~~
- Publication Type :
- Electronic Resource
- Accession number :
- edsoai.on1284010475
- Document Type :
- Electronic Resource