Age-related topographical metabolic signatures for the rat gastrointestinal contents

Yuan Tian, Limin Zhang, Yulan Wang, Huiru Tang

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Symbiotic gut microbiota is essential for mammalian physiology and analyzing the metabolite compositions of gastrointestinal contents is vital for understanding the microbiome-host interactions. To understand the developmental dependence of the topographical metabolic signatures for the rat gastrointestinal contents, we systematically characterized the metabolite compositional variations of the contents in rat jejunum, ileum, cecum, and colon for two age-groups using 1H NMR spectroscopy and multivariate analysis. Significant topographical metabolic variations were present for the jejunal, ileal, cecal, colonic contents, and feces, reflecting the absorption functions for each intestinal region and the gut microbiota therein. The concentrations of amino acids, lactate, creatine, choline, bile acids, uracil and urocanate decreased drastically from jejunal to ileal contents followed with steady decreases from cecal content to feces. Short-chain fatty acids (SCFAs) and arabinoxylan-related carbohydrates had highest levels in cecal content and feces, respectively. Such topographical metabolic signatures for the intestinal contents varied with animal age highlighted by the level changes for lactate, choline, taurine, amino acids, carbohydrates, keto-acids, and SCFAs. These findings provided essential information for the topographical metabolic variations in the gastrointestinal tract and demonstrated metabolic profiling as a useful approach for understanding host-microbiome interactions and functional status of the gastrointestinal regions.

Original languageEnglish (US)
Pages (from-to)1397-1411
Number of pages15
JournalJournal of Proteome Research
Volume11
Issue number2
DOIs
StatePublished - Feb 3 2012

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Gastrointestinal Contents
Volatile Fatty Acids
Metabolites
Choline
Feces
Rats
Lactic Acid
Microbiota
Carbohydrates
Keto Acids
Amino Acids
Uracil
Creatine
Taurine
Physiology
Bile Acids and Salts
Nuclear magnetic resonance spectroscopy
Animals
Cecum
Jejunum

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Chemistry(all)

Cite this

Tian, Yuan ; Zhang, Limin ; Wang, Yulan ; Tang, Huiru. / Age-related topographical metabolic signatures for the rat gastrointestinal contents. In: Journal of Proteome Research. 2012 ; Vol. 11, No. 2. pp. 1397-1411.
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Age-related topographical metabolic signatures for the rat gastrointestinal contents. / Tian, Yuan; Zhang, Limin; Wang, Yulan; Tang, Huiru.

In: Journal of Proteome Research, Vol. 11, No. 2, 03.02.2012, p. 1397-1411.

Research output: Contribution to journalArticle

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