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Cited by 136Antioxidant Activity and Oxidative StressCancer and biochemical researchCarcinogens and Genotoxicity Assessment

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Suppression of azoxymethane-induced rat colon carcinogenesis by dietary administration of naturally occurring xanthophylls astaxanthin and canthaxanthin during the postinitiation phase

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Tanaka, Takuji, Kawamori, Toshihiko, Ohnishi, Masami, Makita, Hiroki, Mori, Hideki, Satoh, Kumiko, Hara, Akira·1995·Carcinogenesis
DOI 10.1093/carcin/16.12.2957
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Abstract

The modulating effects of dietary feeding of two xanthophylls, astaxanthin (AX) and canthaxanthin (CX) during the postinitiation phase on colon carcinogenesis initiated with azoxymethane (AOM) were investigated in male F344 rats. Animals were initiated with AOM by weekly s.c. injections of 15 mg/kg body wt for 3 weeks and then they were fed the diets containing AX or CX at concentrations of 100 and 500 p.p.m. for 34 weeks. The others contained the groups of rats treated with AX or CX alone and untreated. At the end of the study (week 37), the incidence and multiplicity of neoplasms (adenoma and adenocarcinoma) in the large intestine of rats initiated with AOM and followed by AX or CX containing diet at a high dose (500 p.p.m.) were significantly smaller than those of rats given AOM alone (P < 0.001). In addition, AX or CX feeding significantly inhibited the development of aberrant crypt foci induced by AOM. Dietary exposure to AX or CX also decreased cell proliferation activity as revealed by measuring 5'-bromodeoxyuridine-labeling index as crypt cells, colonic mucosal ornithine decarboxylase activity and blood polyamine levels. These results indicate that AX and CX are possible chemopreventers for carcinogenesis of colon in addition to urinary bladder and oral cavity and such effects may be partly due to suppression of cell proliferation.

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Metadata

Authors
Tanaka, T., Kawamori, T., Ohnishi, M., Makita, H., Mori, H., Satoh, K., & Hara, A.
Affiliations
  • Gifu University (JP)
  • Gifu Pharmaceutical University (JP)
ORCID
Venue
Carcinogenesis
Publisher
Oxford University Press (OUP)
Published
1995
Volume
16
Issue
12
Pages
2957-2963
ISSN
  • 0143-3334 (ISSN-L)
  • 1460-2180
DOI
10.1093/carcin/16.12.2957
OpenAlex
W1964960880
Cited by
134
References
0
Citations by year
2026: 1 · 2025: 5 · 2024: 1 · 2022: 3 · 2021: 4 · 2020: 6 · 2019: 12 · 2018: 3 · 2017: 9 · 2016: 5 · 2015: 6 · 2014: 2 · 2013: 3 · 2012: 4
FWCI
2.78
Type
journal article
Language
en
Open access
Licence
cc-by-nc-nd
Locations
  • Carcinogenesis (publishedVersion)
  • PubMed (publishedVersion)
  • Institutional Repositories DataBase (IRDB) (submittedVersion, cc-by-nc-nd)
Topics
  • Health Sciences › Medicine › Biochemistry (medical) › Antioxidant Activity and Oxidative Stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cancer and biochemical research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Carcinogens and Genotoxicity Assessment
Keywords
colon carcinogenesis, azoxymethane, astaxanthin, canthaxanthin, xanthophylls, chemoprevention, aberrant crypt foci, cell proliferation, ornithine decarboxylase, polyamines, colonic adenoma, adenocarcinoma, dietary carotenoids
MeSH terms
Animals, Azoxymethane, Bromodeoxyuridine, Carcinogens, Carotenoids, Colon, Colonic Neoplasms, Diet, Intestinal Mucosa, Male, Ornithine Decarboxylase, Polyamines, Rats, Inbred F344, Incidence, Canthaxanthin, beta Carotene, Xanthophylls, Rats

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