Evaluation of chemopreventive agents for genotoxic activity
| Autor: | James A. Crowell, Kristien Mortelmans, Rupa S. Doppalapudi, Julie A. Shimon, Pam S. Lee, Edward S. Riccio, Linda L. Rausch, Izet M. Kapetanovic, Jon C. Mirsalis |
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| Rok vydání: | 2007 |
| Předmět: |
Male
Salmonella typhimurium Health Toxicology and Mutagenesis Mutagenesis (molecular biology technique) CHO Cells In Vitro Techniques Biology medicine.disease_cause Chemoprevention Mice chemistry.chemical_compound Cricetulus Cricetinae Escherichia coli Genetics medicine Animals Anticarcinogenic Agents Humans Leukemia L5178 Chromosome Aberrations Micronucleus Tests Mutagenicity Tests Chinese hamster ovary cell Farnesol Molecular biology medicine.anatomical_structure chemistry Toxicity Micronucleus test Female Bone marrow Carcinogenesis Micronucleus Mutagens |
| Zdroj: | Mutation Research/Genetic Toxicology and Environmental Mutagenesis. 629:148-160 |
| ISSN: | 1383-5718 |
| DOI: | 10.1016/j.mrgentox.2007.02.004 |
| Popis: | We conducted genetic toxicity evaluations of 11 candidate chemopreventive agents with the potential for inhibiting carcinogenesis in humans at increased risk of cancer. The compounds were evaluated for bacterial mutagenesis in the Salmonella-E. coli assay, for mammalian mutagenesis in mouse lymphoma cells, for chromosome aberrations in Chinese Hamster Ovary (CHO) cells, and for micronucleus induction in mouse bone marrow. Tested agents were indole 3-carbinol (I3C), bowman-birk inhibitor concentrate (BBIC), black tea polyphenols (BTP), farnesol, geraniol, l-Se-methylselenocysteine (SeMC), 5,6-dihydro-4H-cyclopenta[1,2]-dithiol-3-thione(DC-D3T), 4'-bromoflavone, 2,5,7,8-tetramethyl-(2R-[4R,8R,12-trimethyltridecyl] chroman-6-yloxy) acetic acid (alpha-TEA), SR13668 (2,10-dicarbethoxy-6-methoxy-5,7-dihydro-indolo[2,3-b] carbazole and SR16157 (3-O-sulfamoyloxy-7alpha-methyl-21-(2-N,N-diethylaminoethoxy)-19-norpregna-1,3,5(10)-triene). All these agents, except I3C and BTP, were negative in the Salmonella-E. coli assay in the presence and absence of metabolic activation (S9). I3C and BTP induced a weak mutagenic response in the presence and absence of S9 with strains TA100 and TA98, respectively. Of the three compounds tested in the mouse lymphoma assay (I3C, BBIC, and BTP), only BTP was mutagenic in the presence of S9. In the chromosomal aberration assay, of the 8 compounds that were tested, 4'-bromoflavone elicited a positive response in the absence of S9 only, while SR16157 was positive in the presence of S9. The results with geraniol remain inconclusive. I3C, BBIC and BTP were not tested in the chromosomal aberration assay. None of the 11 agents induced micronuclei in mouse bone marrow erythrocytes. |
| Databáze: | OpenAIRE |
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