Interindividual differences in microbial counts and biochemical-associated variables in the feces of healthy Spanish adults.

Digestive Diseases and Sciences
Susana DelgadoBaltasar Mayo

Abstract

The aim of this study was to examine, over a period of 1 year, interindividual variations in the most prominent and representative of the cultivatable microbial populations in the feces of eight healthy Spanish persons. A number of biochemical variables (enzyme activities and ammonium and short-chain fatty acid [SCFA] concentrations) thought to be influenced by the GIT microbiota were also analyzed. Total cultivatable microbial counts ranged from 10(10) to 10(11) cfu/g of feces. The largest populations were obligate anaerobes belonging to the Clostridium clusters, followed by species of bifidobacteria and bacteroides. Coliforms and lactobacilli were found at a more intermediate level (10(5)-10(9) cfu/g). The predominant anaerobe populations remained quite constant over time, but all other microbial groups showed significant interindividual differences. Enzyme profiles were individual-dependent, but within subjects, moderate to high intersample variations over time were recorded for some activities. Fecal ammonium concentration was the most unpredictable variable; this fluctuated widely between individuals and samples. Acetic acid was the most abundant SCFA in the feces, followed by butyric and propionic acids. SCFA concentratio...Continue Reading

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Citations

Jun 10, 2008·Applied and Environmental Microbiology·Nuria SalazarClara G de los Reyes-Gavilán
Aug 30, 2008·Applied and Environmental Microbiology·David BeightonJennifer Gallagher
May 8, 2007·Applied and Environmental Microbiology·Patricia Ruas-MadiedoClara G de Los Reyes-Gavilán
Dec 24, 2009·Canadian Journal of Microbiology·Clarissa SchwabMichael Gänzle
Mar 2, 2011·Canadian Journal of Microbiology·Clarissa Schwab, Michael Gänzle
Sep 9, 2015·Frontiers in Microbiology·David Rios-CovianClara G de Los Reyes-Gavilán
Apr 30, 2016·Expert Reviews in Molecular Medicine·Jyoti Chhibber-GoelAmit Sharma
Jul 16, 2016·BMC Microbiology·David Rios-CovianClara G de Los Reyes-Gavilán
Dec 15, 2015·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·Tim G J de MeijPaul H M Savelkoul

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