title: N-acetylcysteine or trolox derivative mitigate the toxic effects of methanol on the antioxidant system of rat brain.
abstract: The effect of two compounds: N-acetylcysteine (NAC) and trolox derivative (U-83836E) on the methanol induced impairment of the antioxidant system of the rat brain was studied in male Wistar rats (approx. 250 g body weight). The animals were divided into six main groups: control group (0.5 ml of physiological saline intragastrically), NAC group (150 mg/kg intraperitoneally-i.p), U-83836E group (10 mg/kg i.p.), methanol group (3 g/kg intragastrically), NAC+methanol and U-83836E+methanol groups. In these particular groups the changes in antioxidant parameters were observed for 6,12,24,48 h and 5 and 7 days. The results proved that the use of methanol and N-acetylcysteine increased the activities of Cu,Zn-superoxide dismutase, glutathione peroxidase and glutathione reductase by about 15,15 and 41%, respectively, in comparison to the group of rats receiving methanol alone. Similarly, the level of GSH increased by about 17%, the concentration of ascorbate by 20%, while the thiobarbituric acid-reactive substances (TBA-rs) diminished to the values as in control group. The use of new antioxidant U8383E and methanol showed less beneficial effect in the measured parameters however, it serves as a better protector for the methanol induced decrease in GSH-content. These data suggest that NAC and U-83836E mitigate the toxic effects of methanol on the antioxidant system of the rat brain.
authors.affiliation: Department of Analytical Chemistry, Bialystok Medical Academy, Mickiewicza Str 2, P.O. Box 14, 15-230 Bialystok 8, Poland.
authors.forename: R
authors.initials: R
authors.lastname: Farbiszewski
authors.forename: A
authors.initials: A
authors.lastname: Witek
authors.forename: E
authors.initials: E
authors.lastname: Skrzydlewska
mesh_terms: D000111:Acetylcysteine / Q000494:pharmacology*; D000818:Animals; D000975:Antioxidants / Q000032:analysis* / Q000494:pharmacology; D001205:Ascorbic Acid / Q000032:analysis; D001921:Brain / Q000187:drug effects* / Q000378:metabolism; D002839:Chromans / Q000494:pharmacology*; D005978:Glutathione / Q000032:analysis; D005979:Glutathione Peroxidase / Q000378:metabolism; D008297:Male; D000432:Methanol / Q000633:toxicity*; D010879:Piperazines / Q000494:pharmacology*; D051381:Rats; D017208:Rats, Wistar; D013482:Superoxide Dismutase / Q000378:metabolism
chemical_list: D000975:Antioxidants; D002839:Chromans; D010879:Piperazines; C066382:U 78517F; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase; D005978:Glutathione; D001205:Ascorbic Acid; D000111:Acetylcysteine; D000432:Methanol