Differential effects of Bifidobacterium pseudolongum strain Patronus and metronidazole in the rat gut.

Abstract:

:In the luminal contents of metronidazole-treated rats, there was a dominant Bifidobacterium species. A strain has been isolated, its 16S rRNA gene has been sequenced, and the strain has been named Bifidobacterium pseudolongum strain Patronus. In this study, using an experimental model of healthy rats, the effects of metronidazole treatment and B. pseudolongum strain Patronus administration on the luminal and mucosa-associated microbiota and on gut oxidation processes were investigated. Metronidazole treatment and the daily gavage of rats with B. pseudolongum strain Patronus increased the numbers of bifidobacteria in cecal contents and in cecal mucosa-associated microbiota compared with those in control rats. Metronidazole reduced the colonic oxidative damage to proteins. This is the first evidence that B. pseudolongum strain Patronus exerts an effect on a biomarker of oxidative damage by reducing the susceptibility to oxidation of proteins in the colon and the small bowel. Antioxidant effects of metronidazole could be linked to the bifidobacterial increase but also to other bacterial modifications.

journal_name

Appl Environ Microbiol

authors

Vasquez N,Suau A,Magne F,Pochart P,Pélissier MA

doi

10.1128/AEM.01731-08

subject

Has Abstract

pub_date

2009-01-01 00:00:00

pages

381-6

issue

2

eissn

0099-2240

issn

1098-5336

pii

AEM.01731-08

journal_volume

75

pub_type

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