Summary of Study ST000032

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 PR000025. The data can be accessed directly via it's Project DOI: 10.21228/M8201W This work is supported by NIH grant, U2C- DK119886.


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Study IDST000032
Study TitleMetabolomics Involved in Early Life Antibiotic Exposures(NOD-Cecal)
Study TypeMetabolomics
Study SummaryIn the NOD sub-study, a total of 18 samples from 6 week old, male NOD/ShiLtj mice; comprised of 6 serum samples, 6 cecal content samples and 6 liver tissue samples were analyzed. Three mice/matrix were exposed to PAT and 3 mice/matrix were non-exposed Controls. The mice were housed with SPF (Helicobacter neg/MNV neg) bedding and fed a normal diet.
University of North Carolina
DepartmentSystems and Translational Sciences
LaboratorySumner Lab
Last NameSumner
First NameSusan
AddressEastern Regional Comprehensive Metabolomics Resource Core, UNC Nutrition Research Institute, 500 Laureate Way, Kannapolis, NC, 28081
Submit Date2014-03-14
Num Groups2
Total Subjects6
Study CommentsNOD_Cecal Study
Raw Data AvailableYes
Uploaded File Size400K approx
Analysis Type DetailNMR
Release Date2015-03-14
Release Version1
Susan Sumner Susan Sumner application/zip

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Sample Preparation:

Sampleprep ID:SP000045
Sampleprep Summary:Frozen cecal contents (cecal) samples were weighed into labeled homogenizer bead tubes. D20 was added to each tube (500 µL if less than 50 mg and 1000 µL if more than 100 mg of tissue). The samples were homogenized on a Spex Geno/Grinder for two 30 second pulses at 1750 rpm. Samples were centrifuged at 12000 rcf for 5 min. Cecal supernatants were transferred (450/700 µL) into 2.0 mL 0.2 µm nylon filter tubes and centrifuged at 16000 rcf until all the homogenate was filtered. The 200 µL remaining aliquot from each 1000 µL cecal sample was combined in a 10 mL tube and vortexed for 30 seconds to generate pooled samples for QC during analysis. Three “low” QC pools were generated by transferring 450 µL of the pooled homogenate into 2.0 mL 0.2 µm nylon filter tubes; and three “high” QC pools were generated by transferring 700 µL of the pooled homogenate into 2.0 mL 0.2 µm nylon filter tubes and also centrifuged at 16000 rcf until all the homogenate was filtered. The volume of homogenate needed to analyze 50 mg/sample and volume of D20 needed to bring the total volume to 630 µL was calculated. The calculated volumes of filtered supernatant and D20 were then transferred into BSI-labeled tubes. Chenomx Internal Standard solution (Chenomx ISTD, Edmonton, Alberta, Canada) contains 5mM 4,4-dimethyl-4-silapentane-1-sulfonic acid (DSS, Chemical Shift Indicator), 100 mM Imidazole (pH indicator), and 0.2% NaN3 (to inhibit bacterial growth) was added (70 µl) to the tubes. Samples were vortexed for 30 seconds and centrifuged at 12000 rcf for 5 minutes. A 600 µL aliquot of the supernatant was then transferred into 5mm NMR tubes (Wilmad LabGlass, New Jersey, USA) which were kept on ice until data acquisition.
Sampleprep Protocol Filename:NOD_Cecal_Metabolomics_Procedure.docx