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Genotoxic activity of benomyl in different test systems
V Georgieva1, R Vachkova, M Tzoneva
1Medical Genetics, Medical Academy, Sofia, Bulgaria.
Environmental and Molecular Mutagenesis
|January 1, 1990
Summary
Benomyl fungicide induced aneuploidy and sister chromatid exchanges in human cells and micronuclei in rats. However, it did not cause point mutations, chromosome aberrations, or dominant lethal mutations.
Area of Science:
- Toxicology
- Genetics
- Environmental Science
Background:
- Benomyl is a benzimidazole derivative widely used as a fungicide.
- Understanding its genotoxic potential is crucial for risk assessment.
Purpose of the Study:
- To evaluate the genotoxicity of benomyl using a battery of in vitro and in vivo assays.
- To assess potential risks to human health and the environment.
Main Methods:
- Ames test for point mutations.
- Human lymphocyte cultures for cell division, chromosomal aberrations, and sister chromatid exchanges (SCE).
- In vivo rat bone marrow micronucleus test and dominant lethal assay.
Main Results:
- Benomyl tested negative in the Ames test.
- Induced aneuploidy and SCE in human lymphocytes.
- Induced micronuclei in rat bone marrow cells.
- Did not induce chromosome aberrations or dominant lethal mutations in rats.
- Decreased the number of female rats with implants.
Conclusions:
- Benomyl exhibits clastogenic and aneugenic effects in vitro and in vivo.
- Does not appear to be mutagenic or induce dominant lethals.
- Further investigation into its reproductive toxicity is warranted.