Molecular characterization of the microbial species that colonize human ileal and colonic mucosa by using 16S rDNA sequence analysis

Wang, X., Heazlewood, S. P., Krause, D. O. and Florin, T. H. J. (2003) Molecular characterization of the microbial species that colonize human ileal and colonic mucosa by using 16S rDNA sequence analysis. Journal of Applied Microbiology, 95 3: 508-520. doi:10.1046/j.1365-2672.2003.02005.x


Author Wang, X.
Heazlewood, S. P.
Krause, D. O.
Florin, T. H. J.
Title Molecular characterization of the microbial species that colonize human ileal and colonic mucosa by using 16S rDNA sequence analysis
Journal name Journal of Applied Microbiology   Check publisher's open access policy
ISSN 1364-5072
Publication date 2003
Sub-type Article (original research)
DOI 10.1046/j.1365-2672.2003.02005.x
Volume 95
Issue 3
Start page 508
End page 520
Total pages 13
Editor A. F. Godfree
Place of publication U.K.
Publisher Blackwell Publishing
Collection year 2003
Language eng
Subject C1
321006 Gastroenterology and Hepatology
730100 Clinical (Organs, Diseases and Abnormal Conditions)
1108 Medical Microbiology
Abstract Aim: The aim of this study was to characterize the bacterial community adhering to the mucosa of the terminal ileum, and proximal and distal colon of the human digestive tract. Methods and Results: Pinch samples of the terminal ileum, proximal and distal colon were taken from a healthy 35-year-old, and a 68-year-old subject with mild diverticulosis. The 16S rDNA genes were amplified using a low number of PCR cycles, cloned, and sequenced. In total, 361 sequences were obtained comprising 70 operational taxonomic units (OTU), with a calculated coverage of 82.6%. Twenty-three per cent of OTU were common to the terminal ileum, proximal colon and distal colon, but 14% OTU were only found in the terminal ileum, and 43% were only associated with the proximal or distal colon. The most frequently represented clones were from the Clostridium group XIVa (24.7%), and the Bacteroidetes (Cytophaga-Flavobacteria-Bacteroides ) cluster (27.7%). Conclusion: Comparison of 16S rDNA clone libraries of the hindgut across mammalian species confirms that the distribution of phylogenetic groups is similar irrespective of the host species. Lesser site-related differences within groups or clusters of organisms, are probable. Significance and Impact: This study provides further evidence of the distribution of the bacteria on the mucosal surfaces of the human hindgut. Data contribute to the benchmarking of the microbial composition of the human digestive tract.
Keyword 16s Rdna Sequences
Bacteria
Biotechnology & Applied Microbiology
Diversity
Colon
Diverticulosis
Gastrointestinal Microflora
Human
Human Fecal Flora
Human Gut
Hybridization
Ileum
Intestinal Microflora
Mice
Microbial Ecology
Microbiology
Molecular
Mucosal Bacteria
Ribosomal-rna
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
2004 Higher Education Research Data Collection
School of Medicine Publications
 
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Created: Wed, 15 Aug 2007, 02:33:26 EST