Summary of Study ST000899

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 PR000625. The data can be accessed directly via it's Project DOI: 10.21228/M8W983 This work is supported by NIH grant, U2C- DK119886.


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Study IDST000899
Study TitleAlterations in Lipid, Amino Acid, and Energy Metabolism Distinguish Crohn Disease from Ulcerative Colitis and Control Subjects by Serum Metabolomic Profiling
Study SummaryNon-invasive biomarkers are needed in inflammatory bowel disease (IBD) to help define disease activity and identify underlying pathogenic mechanisms. We hypothesized that serum metabolomics, which produces unique metabolite profiles, can aid in this search. The aim of this study was to characterize serum metabolomic profiles in patients with IBD, and to assess for differences between patients with ulcerative colitis (UC), Crohn disease (CD), and non-IBD subjects. Serum samples from 20 UC, 20 CD, and 20 non-IBD control subjects were obtained along with patient characteristics, including medication use and clinical disease activity. Non-targeted metabolomic profiling was performed using ultra-high performance liquid chromatography/mass spectrometry (UPLC-MS/MS) optimized for basic or acidic species and hydrophilic interaction liquid chromatography (HILIC/UPLC-MS/MS).
Vanderbilt University Medical Center
Last NameScoville
First NameElizabeth
Address1030C MRB IV, 2215 Garland Avenue, Nashville, TN, 37232, USA
Submit Date2017-08-29
Analysis Type DetailLC-MS
Release Date2018-01-11
Release Version1
Elizabeth Scoville Elizabeth Scoville application/zip

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Sample Preparation:

Sampleprep ID:SP000943
Sampleprep Summary:: All samples were maintained at -80oC until processed. 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.
Sampleprep Protocol Filename:SupplementalMaterial1.docx