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Evaluation of the aneugenic potential of the fungicide Ferbam in mice.

Ferbam, a potent dithiocarbamate fungicide is used as a protectant against a wide variety of fungal diseases in fruits, vegetables, and ornamental plants. The wide-spread use of this chemical is likely to pollute the environment. Hence, it was planned to test the possible genotoxicity of Ferbam through its aneugenic potential in the in vivo mouse (Mus musculus) test system. Four different doses of Ferbam, namely, 7.5, 15.0, 30.0, 60.0 mg/kg body weight were administered orally to mice Mus musculus suspended in gum tragacanth representing, respectively, 1/16, 1/8, 1/4;, 1/2 th of the LD50 value. They were sacrificed at 6-, 12-, 24-, and 48-h intervals along with a distilled water negative control at 2 mg/kg body weight. Colchicine treated animals were used as positive controls. Bone marrow preparations were made following the standard Hypotonic flame dry Giemsa staining technique to study the dose and time yield effect of Ferbam. The aneugenic potential was evaluated for C-mitotic effects by scoring the mitotic index, c-mitoses frequency, anaphase reduction, and hyper/hypodiploidy induction. Ferbam showed a significant increase in the mitotic index and C-mitoses effects and anaphase decreased at the highest doses of 30 and 60 mg/kg at 12- and 24-h intervals. Colchicine induced significant effects in all the aneugenic parameters observed at all the time intervals. There was no significant induction of either hyperdiploidy or hypodiploidy by Ferbam, unlike colchicine, indicating that the fungicide Ferbam is not aneugenic in the mouse test system.