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Investigation of pesticide exposure by genotoxicological, biochemical, genetic polymorphic and in silico analysis

2019; Elsevier BV; Volume: 179; Linguagem: Inglês

10.1016/j.ecoenv.2019.04.023

1090-2414

Arielly Furtado Bento de Oliveira, Melissa Rosa de Souza, Danieli Benedetti, Amanda Souza Scotti, Luma Smidt Piazza, Ana Letícia Hilário Garcia, Johnny Ferraz Dias, Liana Appel Boufleur Niekraszewicz, Anaí Duarte, D.V. Bauer, L. Amaral, Carmen Lucia Bassi Branco, Érica de Melo Reis, Fernanda Rabaioli da Silva, Juliana da Silva,

Pesticide Exposure and Toxicity

Soybean farmers are exposed to various types of pesticides that contain in their formulations a combination of chemicals with genotoxic and mutagenic potential. Therefore, the objective of this paper was to evaluate the genetic damages caused by this pesticide exposure to soybean producers in the state of Mato Grosso (Brazil), regarding biochemical, genetic polymorphic and in silico analyses. A total of 148 individuals were evaluated, 76 of which were occupationally exposed and 72 were not exposed at all. The buccal micronucleus cytome assay (BMCyt) detected in the exposed group an increase on DNA damage and cell death. No inhibition of butyrylcholinesterase (BchE) was observed within the exposed group. The detection of inorganic elements was made through the particle-induced X-ray emission technique (PIXE), which revealed higher concentrations of Bromine (Br), Rubidium (Rb) and Lead (Pb) in rural workers. A molecular model using in silico analysis suggests how metal ions can cause both DNA damage and apoptosis in the exposed cells. Analysis of the compared effect of X-ray Repair Cross-complement Protein 1 (XRCC1) and Paraoxonase 1 (PON1) genotypes in the groups demonstrated an increase of binucleated cells (exposed group) and nuclear bud (non-exposed group) in individuals with the XRCC1 Trip/- and PON1 Arg/- genes. There was no significant difference in the telomere (TL) mean value in the exposed group in contrast to the non-exposed group. Our results showed that soybean producers showed genotoxic effect and cell death, which may have been induced by exposure to complex mixtures of agrochemicals and fertilizers. In addition, XRCC1 Arg/Arg could, in some respects, provide protection to individuals.