Abstract
Silver nanoparticles (AgNPs) are clusters of silver atoms with diameters that range from 1 to 100 nm. Due to the various shapes and large surface areas, AgNPs have been employed in the food and textile industries and medical fields. Therefore, because of the widespread use of these compounds, the aim of this study was to evaluate the effect of AgNP exposure on the gene and protein expression levels of Neuroglobin (Ngb) and Cytoglobin (Cygb), in the rat cortex, hippocampus and cerebellum. Post-natal day (PND) 21 male Wistar rats were randomly divided into three groups. One group received 15 μg/kg body weight of AgNP by gavage another group received 30 μg/kg and the control group that received saline, from PND23 to PND58. On PND102 the animals were euthanized and the cortex, hippocampus and cerebellum were isolated and evaluated for gene and protein expression levels of Nbg and Cygb. The results demonstrated that the 30 μg/kg AgNP group displayed increased gene and protein expression of Cygb in the cortex. In the Hippocampus, AgNP exposure did not modulate gene or protein expression levels of Ngb and Cygb. In cerebellum the Ngb gene and protein expression was increased with both doses of AgNP. AgNP exposure during prepubescence can modulate the gene and protein expression levels of Ngb and Cygb in adulthood. Furthermore, the observed modulation was specific to the cerebellum, and cortex, and was dose dependent.
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Acknowledgements
We thank the Coordenação de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) for fincancial support through the grant to MRDS (23038009864/2013-98) and the scholarships to RRC, JSS, and KCO. We would also like to thank the Sao Paulo Research Foundation (FAPESP) for supporting this work through the research grant to MIC (2013/26851-7) and the scholarships to JSS (FAPESP 18952-21-7).
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da Conceição, R.R., de Souza, J.S., de Oliveira, K.C. et al. Evaluation of neuroglobin and cytoglobin expression in adult rats exposed to silver nanoparticles during prepubescence. Metab Brain Dis 34, 705–713 (2019). https://doi.org/10.1007/s11011-019-0386-8
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DOI: https://doi.org/10.1007/s11011-019-0386-8