Abstract
The aim of the present study was to comparatively evaluate genomic damage (micronucleus) and cellular death (pyknosis, karyolysis, and karyorrhexis) in exfoliated oral mucosa cells from crack cocaine users by micronucleus test. A total of 30 crack cocaine users and 30 health controls (non-exposed individuals) were included in this setting. Individuals had epithelial cells from cheek mechanically exfoliated, placed in fixative, and dropped in clean slides, which were checked for the above nuclear phenotypes. The results pointed out significant statistical differences (p < 0.05) of micronucleated oral mucosa cells from crack cocaine users. Exposure to crack cocaine caused an increase of other nuclear alterations closely related to cytotoxicity such as karyolysis in oral cells as well. In summary, these data indicate that crack cocaine is able to induce chromosomal breakage and cellular death in oral mucosa cells of users.
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DAR is a recipient of the CNPq fellowship. VHPS is a recipient of CAPES fellowship.
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das Graças Alonso de Oliveira, M., dos Santos, J.N., Cury, P.R. et al. Cytogenetic biomonitoring of oral mucosa cells of crack cocaine users. Environ Sci Pollut Res 21, 5760–5764 (2014). https://doi.org/10.1007/s11356-013-2447-6
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DOI: https://doi.org/10.1007/s11356-013-2447-6