Abstract
The objective of this study was to evaluate the effects of different doses of 2,4-dichlorophenoxyacetic herbicide in rat hearts. Exposure was through rat food that was nebulized with the herbicide. Thirty adult male Wistar rats (200–300 g) were used. The diet was exposed to 2,4-D in two different doses (CG: control group 10 ml distilled water; LCG: low concentration group 3.71 × 10−3 g.ia/ha diluted in 10 ml saline at 0.9% and HCG: High concentration group 9.28 × 10−3 g.ia/ha diluted in 10 ml 0.9% saline). After 6 months of exposure, blood samples were collected for CKMB evaluation, and left ventricular fragments were analyzed by histological evaluation, fibrosis measurements, fractal dimension and immunohistochemistry (BAX, Bcl2, TNF-α and NF-kB). There were no significant changes in CK-MB concentration, histological parameters, fibrosis measurements and fractal dimension. Long-term oral consumption of food nebulized by the herbicide 2,4-D promoted an increase in BAX, Bcl-2/BAX, and cytoplasmic NF-kB in the nuclear area of the group that received the highest dose of the herbicide. This suggests that the herbicide induces cardiotoxicity.
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Conception and design of the research: GAN and FLP. Acquisition of data: ROM, DGP, GLFO, SNP, ASCV, and MEAT. Analysis and interpretation of the data: ROM, DGP, GLFO, and SNP. Statistical analysis: FLP. Writing of the manuscript: ROM, GRT, ASCV, MEAT, and LOM. Critical revision of the manuscript for important intellectual content: FLP and LOM.
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De Oliveira Mantovani, R., Pinheiro, D.G., De Oliveira, G.L.F. et al. Effect of different doses of 2,4-dichlorophenoxyacetic acid (2,4-d) on cardiac parameters in male Wistar rats. Environ Sci Pollut Res 28, 3078–3087 (2021). https://doi.org/10.1007/s11356-020-10699-y
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DOI: https://doi.org/10.1007/s11356-020-10699-y