Summary of Study ST000203

This data is available at the NIH Common Fund's National Metabolomics Data Repository (NMDR) website, the Metabolomics Workbench, https://www.metabolomicsworkbench.org, where it has been assigned Project ID PR000171. The data can be accessed directly via it's Project DOI: 10.21228/M8HG6N This work is supported by NIH grant, U2C- DK119886.

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Study IDST000203
Study TitleGermfree vs Conventional Swiss webster mice Studies
Study TypeShort-chain fatty acid analysis
Study SummaryThe intestinal tract is inhabited by a large and diverse community of microbes collectively referred to as the gut microbiota. While the gut microbiota provides important benefits to its host, especially in metabolism and immune development, disturbance of the microbiota–host relationship is associated with numerous chronic inflammatory diseases, including inflammatory bowel disease and the group of obesity-associated diseases collectively referred to as metabolic syndrome. A primary means by which the intestine is protected from its microbiota is via multi-layered mucus structures that cover the intestinal surface, thereby allowing the vast majority of gut bacteria to be kept at a safe distance from epithelial cells that line the intestine1. Thus, agents that disrupt mucus–bacterial interactions might have the potential to promote diseases associated with gut inflammation. Consequently, it has been hypothesized that emulsifiers, detergent-like molecules that are a ubiquitous component of processed foods and that can increase bacterial translocation across epithelia in vitro2, might be promoting the increase in inflammatory bowel disease observed since the mid-twentieth century3. Here we report that, in mice, relatively low concentrations of two commonly used emulsifiers, namely carboxymethylcellulose and polysorbate-80, induced low-grade inflammation and obesity/metabolic syndrome in wild-type hosts and promoted robust colitis in mice predisposed to this disorder. Emulsifier-induced metabolic syndrome was associated with microbiota encroachment, altered species composition and increased pro-inflammatory potential. Use of germ-free mice and faecal transplants indicated that such changes in microbiota were necessary and sufficient for both low-grade inflammation and metabolic syndrome. These results support the emerging concept that perturbed host–microbiota interactions resulting in low-grade inflammation can promote adiposity and its associated metabolic effects. Moreover, they suggest that the broad use of emulsifying agents might be contributing to an increased societal incidence of obesity/metabolic syndrome and other chronic inflammatory diseases. In Study Design factor “Treatment” CMC stands for carboxymethylcellulose and P80 for polysorbate-80 Research is published: http://www.nature.com/nature/journal/v519/n7541/full/nature14232.html
Institute
University of Michigan
DepartmentBiomedical Research Core Facilities
LaboratoryMetabolomics core
Last NameKachman
First NameMaureen
Address6300 Brehm Tower, 1000 Wall Street, Ann Arbor, MI 48105-5714
Email mkachman@umich.edu
Submit Date2015-06-11
Num Groups6
Total Subjects66
Raw Data AvailableYes
Raw Data File Type(s)d
Uploaded File Size2.3 M
Analysis Type DetailGC-MS
Release Date2015-12-28
Release Version1
Maureen Kachman Maureen Kachman
https://dx.doi.org/10.21228/M8HG6N
ftp://www.metabolomicsworkbench.org/Studies/ application/zip

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Sample Preparation:

Sampleprep ID:SP000224
Sampleprep Protocol Filename:SCFA_analysis_protocol-2015-03-10.docx
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