Ellagic acid alleviates clozapine‑induced oxidative stress and mitochondrial dysfunction in cardiomyocytes.

Drug and Chemical Toxicology
Roya AhangariAhmad Salimi

Abstract

Clozapine (CLZ) as an antipsychotic agent is very effective in treating of psychosis disorders and resistant schizophrenia, but the risk of severe cardiac toxicity effects restricts its clinical use. There are several interrelated hypotheses to explain clozapine-induced cardiotoxicity which all of them may be related to oxidative stress. Therefore, the current study investigated the harmful effects of clozapine on cardiomyocytes and assessed the cytoprotective effect of ellagic acid (EA). Freshly isolated adult rat ventricular cardiomyocytes were incubated for 4 h at 37 °C with 00.05% ethanol as control, CLZ (50 µM), CLZ (50 µM) + a series of EA concentrations (10, 20 and 50 µM) and EA (50 µM). To evaluate the protective effect of EA, the markers of cell viability, reactive oxygen species (ROS) formation, mitochondria membrane potential (ΔΨm) collapse, lysosomal membrane integrity, malondialdehyde (MDA) and oxidized/reduced glutathione (GSH/GSSG) content were checked by biochemical and flowcytometry techniques. Our results demonstrated that EA (10, 20 and 50 µM) effectively inhibited CLZ-induced cytotoxicity which is associated with ROS overproduction and amelioration of mitochondrial and lysosomal damages. In addition, EA (10,...Continue Reading

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