Dataset Information

Beta-diversity metrics of the upper digestive tract microbiome are associated with body mass index.

ABSTRACT: OBJECTIVE:Studies of the fecal microbiome have implicated the gut microbiota in obesity, but few studies have examined the microbial diversity at other sites. The association between obesity and the upper gastrointestinal (UGI) microbial diversity was explored. METHODS:The UGI microbiome of 659 healthy Chinese adults with a measured body mass index (BMI) range of 15.0 to 35.7 was characterized using the 16S rRNA gene DNA microarray (HOMIM). RESULTS:In multivariate-adjusted models, alpha diversity was not associated with BMI. However, beta diversity, assessed by principal coordinate vectors generated from an unweighted UniFrac distance matrix of pairwise comparisons, was associated with BMI (third and fourth vectors, P?=?0.01 and P?=?0.03, respectively). Moreover, beta diversity, assessed by cluster membership (three clusters), was also associated with BMI; individuals in the first cluster [median BMI 22.35, odds ratio (OR)?=?0.48, 95% confidence interval (CI) = 0.05-4.34] and second cluster [median BMI 22.55, OR?=?0.26, 95% CI?=?0.09-0.75] were significantly less likely to be obese (BMI???27.5) than those in the third cluster (median BMI 23.59). CONCLUSIONS:A beta-diversity metric of the UGI microbiome is associated with a four fold difference in obesity risk in this Asian population. Future studies should address whether the UGI microbiome plays a causal role in obesity.

SUBMITTER: Lin SW

PROVIDER: S-EPMC4380747 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature

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Beta-diversity metrics of the upper digestive tract microbiome are associated with body mass index.

Lin Shih-Wen SW Freedman Neal D ND Shi Jianxin J Gail Mitchell H MH Vogtmann Emily E Yu Guoqin G Klepac-Ceraj Vanja V Paster Bruce J BJ Dye Bruce A BA Wang Guo-Qing GQ Wei Wen-Qiang WQ Fan Jin-Hu JH Qiao You-Lin YL Dawsey Sanford M SM Abnet Christian C CC

Obesity (Silver Spring, Md.) 20150309 4

<h4>Objective</h4>Studies of the fecal microbiome have implicated the gut microbiota in obesity, but few studies have examined the microbial diversity at other sites. The association between obesity and the upper gastrointestinal (UGI) microbial diversity was explored.<h4>Methods</h4>The UGI microbiome of 659 healthy Chinese adults with a measured body mass index (BMI) range of 15.0 to 35.7 was characterized using the 16S rRNA gene DNA microarray (HOMIM).<h4>Results</h4>In multivariate-adjusted ...[more]

PMID: 25755147

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Dataset Information

Beta-diversity metrics of the upper digestive tract microbiome are associated with body mass index.

Publications

Beta-diversity metrics of the upper digestive tract microbiome are associated with body mass index.

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