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Ann Biol Clin (Paris). 2009 Nov-Dec;67(6):619-27. doi: 10.1684/abc.2009.0376.

[Protective effect of diclofenac towards the oxidative stress induced by paracetamol toxicity in rats].

[Article in French]

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Laboratoire de biochimie et microbiologie appliquée, Département de biochimie, France.


Association of paracetamol (PARA) and diclofenac (DiCF) is the aim of our study. 60 male rats "Albinos wistar" were treated by oral gavage (per os) during seven days. A control group was treated by mineral water (0+0) mg/kg and a second group was treated with only a toxic dose of 100 mg/kg of PARA (100+0). Remaining lots were treated with a combination of different toxic doses of PARA and a therapeutic dose of DiCF (15+3, 100+3, 200+3 and 400+3) mg/kg. Plasma concentration of amiotransferases (ASAT, ALAT), alkalines phosphatase (ALP), glutathione peroxidase (GPx), glutathione reductase (GR), glutathione (GSH), glucose, cholesterol, creatinin, direct and total bilirubin, significantly varied in the treated rats regarding to the witness's rats. The toxicity of PARA revealed by a dose dependant blood increases of ASAT, ALAT, ALP, GPx, GR, glucose, creatinin, bilirubin, and by decreases of cholesterol concentration and tissue GSH in comparisons to controls. The depletion of GSH and the increase of the oxidative stress enzymes (GPx and GR) suggest a detoxification function of the glutathione system. The association (PARA + DiCF) revealed a protective effect, resulting in the increase of the concentrations of ASAT, ALAT, ALP, GPx, GR, bilirubin and the increase of GSH. Regarding to all these results, it has been suggested that DiCF has a protective action towards the toxic effects of PARA.

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