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The mutagenic activity of razoxane (ICRF 159): an anticancer agent
British Journal of Cancer
|November 1, 1985
Summary
Razoxane (ICRF 159) showed no mutagenic activity in bacteria but induced chromosomal damage in eukaryotic cells. This indicates razoxane
Area of Science:
- Toxicology
- Genetics
- Cell Biology
Background:
- Razoxane (ICRF 159) is an antineoplastic agent.
- Understanding its mutagenic potential is crucial for risk assessment.
Purpose of the Study:
- To evaluate the mutagenic activity of razoxane.
- To determine if razoxane induces genetic mutations or chromosomal damage.
Main Methods:
- Salmonella/microsome assay for bacterial mutagenicity.
- Rodent bone-marrow micronucleus and metaphase assays for chromosomal damage in eukaryotes.
Main Results:
- Razoxane did not increase mutation frequency in the Salmonella/microsome assay.
- In mice, razoxane caused cytotoxicity but increased micronucleated erythrocytes.
- In Chinese hamsters, razoxane induced abnormal chromosome condensation, structural aberrations, and polyploidy.
Conclusions:
- Razoxane exhibits mutagenic effects specifically in eukaryotic cells.
- The mutagenicity is linked to chromosomal abnormalities, not bacterial mutations.