Journal of the Serbian Chemical Society 2013 Volume 78, Issue 2, Pages: 179-195
https://doi.org/10.2298/JSC120724127M
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The effects of ethanol on paracetamol-induced oxidative stress in mice liver
Mladenović Dušan (Faculty of Medicine, Department of Pathophysiology, Belgrade)
Ninković Milica (Institute for Medical Research, Millitary Medical Academy, Belgrade)
Vučević Danijela (Faculty of Medicine, Department of Pathophysiology, Belgrade)
Čolić Miodrag (Institute for Medical Research, Millitary Medical Academy, Belgrade)
Micev Marjan (Institute for Digestive Diseases, Clinical Centre of Serbia, Belgrade)
Todorović Vera (Faculty of Stomatology Pančevo, University of Academy Trade, Novi Sad)
Stanković Milena (Faculty of Medicine, Department of Pathophysiology, Belgrade)
Radosavljević Tatjana (Faculty of Medicine, Department of Pathophysiology, Belgrade)
The aim of our study was to investigate the effects of binge drinking on
paracetamol induced oxidative stress in mice liver. Male Swiss mice were
divided into groups: control; ethanol-treated group (E) in five subsequent
doses of 2 g/kg by orogastric tube; paracetamol-treated group (P) in a dose
of 300 mg/kg intraperitoneally; group that received paracetamol 12 hrs after
the last dose of ethanol (PE). Blood and liver samples were collected for
determination of oxidative stress parameters 6, 24 and 48 hrs after
treatment. Prior binge drinking potentiated paracetamol-induced rise in liver
malondialdehyde level 48 hours after treatment in comparison with P and E
groups (17.14 ± 1.98 vs 13.14 ± 0.82 and 12.99 ± 1.18 μmol/L, p<0.01).
Ethanol and paracetamol in combination induced a more pronounced decrease in
liver GSH level than either of these substances alone at all time intervals
(p<0.01). Total liver superoxide dismutase (SOD) activity was significantly
lower in PE 48 hours after treatment in comparison with P and E groups
(251.73 ± 80.63 vs 707.62 ± 179.92 and 1179.62 ± 147.94 U/mg prot., p<0.01).
The lowest MnSOD activity in PE group was detected 48 hrs after treatment
(86.52 ± 28.31; 41.13 ± 11.07 and 23.16 ± 5.18 U/mg prot. in P, E and PE
groups, p<0.05, respectively). Prior binge ethanol drinking potentiates
paracetamol-induced reduction of antioxidative capacity of hepatocytes due to
GSH depletion and SOD activity reduction, simultaneously increasing lipid
peroxidation caused by paracetamol.
Keywords: ethanol, paracetamol, oxidative stress, liver, mice
Projekat Ministarstva nauke Republike
Srbije, br. 175015