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• W2968793552 endingPage "3902" @default.
• W2968793552 startingPage "3902" @default.
• W2968793552 abstract "Carcinogenesis induced by high-risk human papillomavirus (HPV) involves inflammatory phenomena, partially mediated by cyclooxigenase-2. In pre-clinical models of HPV-induced cancer, cyclooxygenase-2 inhibitors have shown significant efficacy, but also considerable toxicity. This study addresses the chemopreventive effect and hepatic toxicity of a specific cyclooxigensase-2 inhibitor, parecoxib, in HPV16-transgenic mice. Forty-three 20 weeks-old female mice were divided into four groups: I (HPV16-/-, n = 10, parecoxib-treated); II (HPV16-/-n = 11, untreated); III (HPV16+/-, n = 11, parecoxib-treated) and IV (HPV16+/-, n = 11, untreated). Parecoxib (5.0 mg/kg once daily) or vehicle was administered intraperitoneally for 22 consecutive days. Skin lesions were classified histologically. Toxicological endpoints included genotoxic parameters, hepatic oxidative stress, transaminases and histology. Parecoxib completely prevented the onset of epidermal dysplasia in HPV16+/- treated animals (0% versus 64% in HPV16+/- untreated, p = 0.027). Parecoxib decreases lipid peroxidation (LPO) and superoxide dismutase (SOD) activity and increases the GSH:GSSG ratio in HPV16+/- treated animals meaning that oxidative stress is lower. Parecoxib increased genotoxic stress parameters in wild-type and HPV16-transgenic mice, but didn't modify histological or biochemical hepatic parameters. These results indicate that parecoxib has chemopreventive effects against HPV16-induced lesions while maintaining an acceptable toxicological profile in this model." @default.
• W2968793552 created "2019-08-22" @default.
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• W2968793552 date "2019-08-10" @default.
• W2968793552 modified "2023-10-17" @default.
• W2968793552 title "The Cyclooxigenase-2 Inhibitor Parecoxib Prevents Epidermal Dysplasia in HPV16-Transgenic Mice: Efficacy and Safety Observations" @default.
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• W2968793552 doi "https://doi.org/10.3390/ijms20163902" @default.
• W2968793552 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6720853" @default.
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• W2968793552 hasPublicationYear "2019" @default.
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