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Protective effect of melatonin against mitomycin C-induced genotoxic damage in peripheral blood of rats
Journal article   Open access

Protective effect of melatonin against mitomycin C-induced genotoxic damage in peripheral blood of rats

S Ortega-Gutiérrez, M López-Vicente, F Lostalé, L Fuentes-Broto, E Martínez-Ballarín and J J García
Journal of biomedicine & biotechnology, Vol.2009, 791432
2009
DOI: 10.1155/2009/791432
PMCID: PMC2764378
PMID: 19859567
url
https://doi.org/10.1155/2009/791432View
Published (Version of record) Open Access

Abstract

Mitomycin C (MMC) generates free radicals when metabolized. We investigated the effect of melatonin against MMC-induced genotoxicity in polychromatic erythrocytes and MMC-induced lipid peroxidation in brain and liver homogenates. Rats (N = 36) were classified into 4 groups: control, melatonin, MMC, and MMC + melatonin. Melatonin and MMC doses of 10 mg/kg and 2 mg/kg, respectively, were injected intraperitoneally. Peripheral blood samples were collected at 0, 24, 48, 72, and 96 hours posttreatment and homogenates were obtained at 96 hours posttreatment. The number of micronucleated polychromatic erythrocytes (MN-PCE) per 1000 PCE was used as a genotoxic marker. Malondialdehyde (MDA) plus 4-hydroxyalkenal (4-HDA) levels were used as an index of lipid peroxidation. The MMC group showed a significant increase in MN-PCE at 24, 48, 72, and 96 hours that was significantly reduced with melatonin begin coadministrated. No significant differences were found in lipid peroxidation. Our results indicate that MMC-induced genotoxicity can be reduced by melatonin.
Malondialdehyde - metabolism Mutagens - toxicity Liver - metabolism Rats Rats, Sprague-Dawley Erythrocytes - drug effects Brain - drug effects Brain - metabolism Micronucleus Tests Animals Liver - drug effects Erythrocytes - metabolism Lipid Peroxidation - drug effects Mitomycin - antagonists & inhibitors Mitomycin - toxicity In Vitro Techniques Melatonin - pharmacology

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