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Biochemical and genotoxic effects in women exposed to pesticides in Southern Ecuador

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Abstract

Toxicity refers to the potential of a substance such as a pesticide to cause damage to the structure or functions of an exposed organism. Pesticides can lead to harmful biological effects in exposed animals and their offspring over the medium and long term. They can affect the immunological, nervous, endocrine, and reproductive systems. DNA damage has also been linked to exposure to pesticides, and this damage can cause abortions, degenerative diseases, and cancer. The aim of this work was to establish whether women who are indirectly exposed to pesticides exhibit a compromised health status, including genotoxic effect. Women exposed indirectly to pesticides in Chimchanga and Colaisaca in the south of Ecuador underwent hematological and biochemical tests and micronucleus assay in buccal cells. The subjects were also genotyped for GSTM1, GSTT1, GSTP1, and PON1 polymorphisms, which can modify an individual’s capacity to metabolize pesticides and relation with damage of DNA. The study revealed hepatic toxicity in Colaisaca women (AST and ALT) and an increase in the rate of micronucleus (MN) in Colaisaca individuals. In addition, genetic polymorphisms in PON1 and GSTP1 showed effects of modulating the frequency of karyolytic cells, karyorrhectic cells, and condensed chromatin cells.

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Acknowledgments

We acknowledge the technical support of Gabriela González and Patricio Espinosa. The authors express their gratitude to all of the individuals who volunteered to participate in this study. This study was only possible with the help of the “Organización Cantonal de Mujeres Emprendedoras Campesinas y Urbanas de Calvas- OCMECUC.” We also especially thank Emilio Aguilar and Julio Ajila, Emperatriz Sarango, Gabriel Chamba, José Espinosa, Blanca Cueva, Enrique Sarango, Zoila Guamán, and Marisol Jima.

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This work was financially supported by UTPL (no. PROY_CCSAL_1334).

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Correspondence to Natalia Bailon-Moscoso.

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The authors declare that they have no conflict of interest.

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Responsible editor: Philippe Garrigues

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Arévalo-Jaramillo, P., Idrobo, A., Salcedo, L. et al. Biochemical and genotoxic effects in women exposed to pesticides in Southern Ecuador. Environ Sci Pollut Res 26, 24911–24921 (2019). https://doi.org/10.1007/s11356-019-05725-7

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  • DOI: https://doi.org/10.1007/s11356-019-05725-7

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