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Erschienen in: Digestive Diseases and Sciences 3/2007

01.03.2007 | Original Article

High Proportions of Proinflammatory Bacteria on the Colonic Mucosa in a Young Patient with Ulcerative Colitis as Revealed by Cloning and Sequencing of 16S rRNA Genes

verfasst von: Mei Wang, Göran Molin, Siv Ahrné, Diya Adawi, Bengt Jeppsson

Erschienen in: Digestive Diseases and Sciences | Ausgabe 3/2007

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Abstract

The pathogenesis of ulcerative colitis (UC) remains unknown. It is thought to be due to an abnormal and uncontrolled immune response to normally occurring constituents of the intestine. Microbial agents appear to be involved in the pathogenesis and intestinal bacteria seem to be an important factor in the development and chronicity. The aim of this study was to investigate the colonic microbiota of a patient with UC. The colonic tissues were taken during surgery from a 12-year-old girl suffering from UC. The microbiota on the colonic samples was studied by cloning and sequencing of amplified 16S rRNA genes. Compared with healthy subjects, alteration of the dominant bacterial group was observed in the UC patient. We found a high incidence of Enterobacteriaceae, Bacteroides fragilis, and the single phylotype of the Faecalibacterium prausnitzii-like “Butyrate-producing bacterium” L2-6. Furthermore, there was a substantial presence of Pseudomonas aeruginosa in the present case of UC. The high proportion of adverse proinflammatory species is striking in the present case compared with more normal situations. Even if those bacteria are not the cause of the UC, they most probably enhance the symptoms of the disease.
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Metadaten
Titel
High Proportions of Proinflammatory Bacteria on the Colonic Mucosa in a Young Patient with Ulcerative Colitis as Revealed by Cloning and Sequencing of 16S rRNA Genes
verfasst von
Mei Wang
Göran Molin
Siv Ahrné
Diya Adawi
Bengt Jeppsson
Publikationsdatum
01.03.2007
Erschienen in
Digestive Diseases and Sciences / Ausgabe 3/2007
Print ISSN: 0163-2116
Elektronische ISSN: 1573-2568
DOI
https://doi.org/10.1007/s10620-006-9461-1

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