Summary of Study ST000723

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 PR000520. The data can be accessed directly via it's Project DOI: 10.21228/M8FQ1J This work is supported by NIH grant, U2C- DK119886.


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Study IDST000723
Study TitleAnalysis of SCFA in the fecal matter of wt and Orai1kO mice
Study TypeMS analysis
Study SummaryThe gut microbiome participates in numerous physiological functions and is believed to be shaped by the host intestine. We report here an unsuspected prominent role of Orai1-mediated pancreatic acinar cell exocytosis in shaping the microbiome. Deletion of Orai1 in pancreatic acini of mature mice maintained on solid diet resulted in 60-70% mortality. The mice have severe bacterial burden with dysbiosis resulting in systemic inflammation and death. This occurs despite prominent Paneth cell hyperplasia and activation of the intestinal innate immune response. Secretion of and bacterial killing by pancreatic defensins are markedly reduced, resulting in microbiota with decreased diversity and increased pathogenic bacteria. Survival and weight gain are not rescued by digestive enzyme supplements, but are by broad-spectrum antibiotics and purified liquid diet. These findings reveal an unexpected profound role of pancreatic secretion in shaping the microbiome
University of Michigan
DepartmentBiomedical Research Core Facilities
LaboratoryMetabolomics core
Last NameKachman
First NameMaureen
Address6300 Brehm Tower, 1000 Wall Street, Ann Arbor, MI 48105-5714
Phone(734) 232-8175
Submit Date2017-06-19
Num Groups4
Total Subjects4
Raw Data AvailableYes
Raw Data File Type(s)d
Analysis Type DetailGC-MS
Release Date2017-12-06
Release Version1
Maureen Kachman Maureen Kachman application/zip

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Combined analysis:

Analysis ID AN001133
Analysis type MS
Chromatography type GC
Chromatography system Agilent 7890N
Column Phenomenex Zebron ZB-WAXplus (30m x 0.25mm,0.25um)
MS Type EI
MS instrument type Single quadrupole
MS instrument name Agilent 5975
Units nmol/mg


Chromatography ID:CH000796
Instrument Name:Agilent 7890N
Column Name:Phenomenex Zebron ZB-WAXplus (30m x 0.25mm,0.25um)
Chromatography Type:GC