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## Abstract α‐Cypermethrin, a highly active pyrethroid insecticide, is effective against a wide range of insects encountered in agriculture and animal husbandry. The potential genotoxicity of a commercial formulation of α‐cypermethrin (Fastac 100 EC, containing 10% α‐cypermethrin as the active ingredient) on human peripheral lymphocytes was examined in vitro by sister chromatid exchange (SCE), chromosomal aberrations (CAs), and micronucleus (MN) tests. The human lymphocytes were treated with 5, 10, 15, and 20 μg/ml of α‐cypermethrin for 24‐ and 48‐hr. α‐Cypermethrin induced SCEs and CAs significantly at all concentrations and treatment times and MN formation was significantly induced at 5 and 10 μg/ml of α‐cypermethrin when compared with both the control and solvent control. Binuclear cells could not be detected sufficiently in the highest two concentration of α‐cypermethrin (15 and 20 μg/ml) for both the 24‐ and 48‐hr treatment times. α‐Cypermethrin decreased the proliferation index (PI) at three high concentrations (10, 15, and 20 μg/ml) for both treatment periods as compared with the control groups. In addition, α‐cypermethrin reduced both the mitotic index (MI) and nuclear divi

Author

Ayşe Yavuz Kocaman; Mehmet Topaktaş

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0893-6692)

Published

2008

Language

EN