Summary of Study ST000930

This data is available at the NIH Common Fund's National Metabolomics Data Repository (NMDR) website, the Metabolomics Workbench,, where it has been assigned Project ID PR000644. The data can be accessed directly via it's Project DOI: 10.21228/M8F380 This work is supported by NIH grant, U2C- DK119886.


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Study IDST000930
Study TitleDefine alterations in the gut metabolome of mice infected with C. difficile
Study TypeTime course experiment
Study SummaryC57BL/6 mice were treated with antibiotics to make them susceptible to C. difficile. Mice were challenged with C. difficile and the infection was monitored for 30 hours post challenge. Mice were sacrificed at 0 hr, 12 hr, 24 hr, and 30 hr post challenge with C. difficile and gut content was collected for untargeted metabolomic analysis. The aim of this project was to define the gut metabolome throughout C. difficile infection.
North Carolina State University
Last NameTheriot
First NameCasey
Address1051 William Moore Drive
Submit Date2018-02-26
Num Groups4
Total Subjects31
Num Males16
Num Females15
Analysis Type DetailLC-MS
Release Date2018-03-15
Release Version1
Casey Theriot Casey Theriot application/zip

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Sample Preparation:

Sampleprep ID:SP000976
Sampleprep Summary:Samples were prepared using the automated MicroLab STARĀ® system from Hamilton Company. Several recovery standards were added prior to the first step in the extraction process for QC purposes. To remove protein, dissociate small molecules bound to protein or trapped in the precipitated protein matrix, and to recover chemically diverse metabolites, proteins were precipitated with methanol under vigorous shaking for 2 min (Glen Mills GenoGrinder 2000) followed by centrifugation. The resulting extract was divided into five fractions: two for analysis by two separate reverse phase (RP)/UPLC-MS/MS methods with positive ion mode electrospray ionization (ESI), one for analysis by RP/UPLC-MS/MS with negative ion mode ESI, one for analysis by HILIC/UPLC-MS/MS with negative ion mode ESI, and one sample was reserved for backup. Samples were placed briefly on a TurboVapĀ® (Zymark) to remove the organic solvent. The sample extracts were stored overnight under nitrogen before preparation for analysis.