Summary of Study ST000965

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 PR000662. The data can be accessed directly via it's Project DOI: 10.21228/M83Q2T This work is supported by NIH grant, U2C- DK119886.


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Study IDST000965
Study TitleTimecourse of U13C glucose labeling of pancreatic islets in young mice
Study SummaryPancreatic islets from young mice were traced with 16.8mM U13C glucose over a 90 minute timecourse to determine the rate of metabolite labeling during glucose stimulation.
University of California, San Diego
Last NameWortham
First NameMatthew
Address2880 Torrey Pines Scenic Drive, Sanford Consortium for Regenerative Medicine, Room 3102
Submit Date2018-04-27
Raw Data AvailableYes
Raw Data File Type(s)d
Analysis Type DetailGC-MS
Release Date2019-04-27
Release Version1
Matthew Wortham Matthew Wortham application/zip

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Sample Preparation:

Sampleprep ID:SP001011
Sampleprep Summary:Metabolites were extracted from pellets using a bligh and dyer-based methanol/chloroform/water extraction with inclusion of norvaline as a polar internal standard. Briefly, 250 μl MeOH, 250 μl CHCL3, 100 μl water containing norvaline were added to pellets. This was vortexed for 10 minutes followed by centrifugation at 10,000 g for 5 minutes at 4°C. The upper phase was separated and dried under vacuum at 4°C until dry. Polar metabolites were derivatized in 2% (w/v) methoxyamine hydrochloride in pyridine and incubated at 45°C for 60 minutes. Samples were then silylated with N-tertbutyldimethylsilyl-N-methyltrifluoroacetamide (MtBSTFA) with 1% tert-butyldimethylchlorosilane (tBDMCS) at 45°C for 30 minutes. Polar derivatives were analyzed by GC-MS using a DB-35MS column (30m x 0.25 mm i.d. x 0.25 μm) installed in an Agilent 7890B gas chromatograph (GC) interfaced with an Agilent 5977A mass spectrometer (MS) with an XTR EI source using the following temperature program: 100 °C initial, increase by 3.5 °C/min to 255 °C, increase by 15 °C/min to 320 °C and hold for 3 min.