Effects of haloperidol and clozapine administration on oxidative stress in rat brain, liver and serum

• Published in: Neuroscience letters 2015-03, Vol.591, p.36-40
• Main Authors: Andreazza, Ana C., Barakauskas, Vilte E., Fazeli, Salar, Feresten, Abigail, Shao, Li, Wei, Vivien, Wu, Che Hsuan, Barr, Alasdair M., Beasley, Clare L.
• Format: Article
• Language: English
• Subjects: Animals; Antioxidant; Antipsychotic agent; Antipsychotic Agents - pharmacology; Brain - drug effects; Brain - metabolism; Clozapine - pharmacology; Haloperidol - pharmacology; Lipid Peroxidation; Liver - drug effects; Liver - metabolism; Male; Organ Specificity; Oxidation-Reduction; Oxidative Stress - drug effects; Peroxiredoxin; Peroxiredoxins - metabolism; Rats, Sprague-Dawley; Schizophrenia; Serum
• ISSN: 0304-3940; 1872-7972
• DOI: 10.1016/j.neulet.2015.02.028

•Oxidative stress measured in brain, liver and serum following antipsychotics.•Haloperidol increased levels of antioxidant peroxiredoxin-6 in frontal cortex.•Clozapine increased lipid peroxidation in liver.•Differences are consistent with documented adverse effects. Antipsychotics remain the standard of care for individuals with schizophrenia, despite their association with adverse effects including extrapyramidal symptoms, metabolic syndrome and agranulocytosis. While the biological mechanisms underlying these side effects remain unresolved, it has been proposed that oxidative stress may play a role in their development. The aim of this study was to evaluate markers of oxidative stress associated with first- and second-generation antipsychotics, focusing on protein and lipid oxidation and expression of the antioxidant proteins peroxiredoxin-2 and peroxiredoxin-6. Following 28-day administration of haloperidol, clozapine or saline to adult rats, brain grey matter, white matter, serum and liver samples were obtained and lipid peroxidation, protein oxidation, peroxiredoxin-2 and peroxiredoxin-6 levels quantified. In grey matter, peroxiredoxin-6 was significantly increased in the haloperidol-exposed animals, with a trend towards increased lipid peroxidation also observed in this group. In liver, lipid peroxidation was increased in the clozapine-exposed animals, with a similar trend noted in the haloperidol group. Antipsychotics did not produce significant changes in serum or white matter. Our results suggest that haloperidol and clozapine may induce oxidative stress in brain and liver, respectively, consistent with the documented adverse effects of these agents.