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Inhibitory effects of feeding with carrots or (-)-falcarinol on development of azoxymethane-induced preneoplastic lesions in the rat colon

Lookup NU author(s): Dr Kirsten Brandt

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Abstract

The effects of intake of dietary amounts of carrot or corresponding amounts of (-)-(3R)-falcarinol from carrots on development of azoxymethane (AOM)-induced colon preneoplastic lesions were examined in male BDIX rats. Three groups of eight AOM-treated rats were fed the standard rat feed Altromin supplemented with either 10% (w/w) freeze-dried carrots with a natural content of 35 μg falcarinol/g, 10% maize starch to which was added 35 μg falcarinol/g purified from carrots, or 10% maize starch (control). After 18 weeks, the animals were euthanized and the colon was examined for tumors and aberrant crypt foci (ACF), which were classified into four size classes. Although the number of small ACF was unaffected by the feeding treatments, the numbers of lesions as a function of increasing size class decreased significantly in the rats that received one of the two experimental treatments, as compared with the control treatment. This indicates that the dietary treatments with carrot and falcarinol delayed or retarded the development of large ACF and tumors. The present study provides a new perspective on the known epidemiological associations between high intake of carrots and reduced incidence of cancers. © 2005 American Chemical Society.


Publication metadata

Author(s): Kobaek-Larsen M, Christensen LP, Vach W, Ritskes-Hoitinga J, Brandt K

Publication type: Article

Publication status: Published

Journal: Journal of Agricultural and Food Chemistry

Year: 2005

Volume: 53

Issue: 5

Pages: 1823-1827

Print publication date: 09/03/2005

ISSN (print): 0021-8561

ISSN (electronic): 1520-5118

Publisher: American Chemical Society

URL: http://dx.doi.org/10.1021/jf048519s

DOI: 10.1021/jf048519s

PubMed id: 15740080


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