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Erschienen in: European Journal of Nutrition 2/2010

01.03.2010 | Short Communication

Arabinoxylan-oligosaccharides (AXOS) reduce preneoplastic lesions in the colon of rats treated with 1,2-dimethylhydrazine (DMH)

verfasst von: Angelo Pietro Femia, Maddalena Salvadori, Willem F. Broekaert, Isabelle E. J. A. François, Jan A. Delcour, Christophe M. Courtin, Giovanna Caderni

Erschienen in: European Journal of Nutrition | Ausgabe 2/2010

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Abstract

Background

Prebiotics are non-digestible compounds that beneficially affect the host by stimulating the growth and/or activity of one or a limited number of resident colonic bacteria in the gut. Reported beneficial effects of prebiotics include reduced gut infections, better absorption of minerals, and notably, antitumorigenic effects. Arabinoxylan (AX)-oligosaccharides (AXOS) have been suggested to exert prebiotic effects in the gut, but their effect on colon carcinogenesis has not been studied so far.

Aim of the study

To test the effect of AXOS in a rat colon carcinogenesis model.

Methods

We determined the occurrence of two types of preneoplastic lesions [aberrant crypt foci (ACF) and mucin depleted foci (MDF)] in the colon of rats treated with the colon carcinogen 1,2-dimethylhydrazine (DMH) and fed either a control diet or a diet containing AXOS (4.8% w/w) (15 rats in each group).

Results

Thirteen weeks after DMH treatment, MDF counts were significantly lower in the entire colon of AXOS fed rats (MDF/colon were 7.5 ± 0.6 and 5.5 ± 0.6, in Control and AXOS groups, respectively, means ± SE, P < 0.05). Although the number of ACF in the entire colon was not significantly different between Control and AXOS fed rats, AXOS fed rats had significantly fewer ACF in the distal part of the colon than Control group rats (ACF/distal colon were 135.5 ± 15 and 84.4 ± 11, in Control and AXOS groups, respectively, means ± SE, P < 0.05).

Conclusions

The present study shows that dietary intake of AXOS by rats reduces the occurrence of two types of preneoplastic lesions, thus suggesting a chemopreventive effect on colon carcinogenesis that should be confirmed in a long-term carcinogenesis experiment.
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Metadaten
Titel
Arabinoxylan-oligosaccharides (AXOS) reduce preneoplastic lesions in the colon of rats treated with 1,2-dimethylhydrazine (DMH)
verfasst von
Angelo Pietro Femia
Maddalena Salvadori
Willem F. Broekaert
Isabelle E. J. A. François
Jan A. Delcour
Christophe M. Courtin
Giovanna Caderni
Publikationsdatum
01.03.2010
Verlag
Springer-Verlag
Erschienen in
European Journal of Nutrition / Ausgabe 2/2010
Print ISSN: 1436-6207
Elektronische ISSN: 1436-6215
DOI
https://doi.org/10.1007/s00394-009-0050-x

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