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Calypso (thiacloprid), Poncho (clothianidin), Gaucho (imidacloprid), and Jade (imidacloprid) are commercial neonicotinoid insecticides, a new class of agrochemicals in México. However, genotoxic and cytotoxic studies have not been performed. In the present study, human peripheral blood lymphocytes (PBL) were exposed  in vitro  to different concentrations of the four insecticides. The genotoxic and cytotoxic effects were evaluated using the alkaline comet and trypan blue dye exclusion assays. DNA damage was evaluated using two genotoxicity parameters: tail length and comet frequency. Exposure to 9.5 × 10 −6  to 5.7 × 10 −5  M Jade; 2.8 × 10 −4  to 1.7 × 10 −3  M Gaucho; 0.6 × 10 −1  to 1.4 × 10 −1  M Calypso; 1.2 × 10 −1  to 9.5 × 10 −1  M Poncho for 2 h induced a significant increase DNA damage with a concentration-dependent relationship. Jade was the most genotoxic of the four insecticides studied. Cytotoxicity was observed in cells exposed to 18 × 10 −3  M Jade, 2.0 × 10 −3  M Gaucho, 2.0 × 10 −1  M Calypso, 1.07 M Poncho, and cell death occurred at 30 × 10 −3  M Jade, 3.3 × 10 −3  M Gaucho, 2.8 × 10 −1  M Calypso, and 1.42 M Poncho. This study provides the first report of genotoxic and cytotoxic effects in PBL following  in vitro  exposure to commercial neonicotinoid insecticides.

Evaluation of Genotoxic and Cytotoxic Effects in Human Peripheral Blood Lymphocytes ExposedIn Vitroto Neonicotinoid Insecticides News