Stabilization of Mitochondrial Function by Ellagic Acid Prevents Celecoxib-induced Toxicity in Rat Cardiomyocytes and Isolated Mitochondria

Abstract

The possible action of polyphenolic compounds in the reduction of reactive oxygen species (ROS) and mitochondrial toxicity may suggest them as putative agents for the treatment of drug-induced mitochondrial dysfunction and cardiotoxicity. This study was designed to explore protective effect of ellagic acid (EA) against celecoxib-induced cellular and mitochondrial toxicity in cardiomyocytes and their isolated mitochondria. In order to do this, isolated cardiomyocytes and mitochondria were pretreated with 3 different concentrations of EA (10, 50 and 100 µM), after which celecoxib (16 µg/ml) was added to promote deleterious effects on cells and mitochondria. Using flow cytometry and biochemical methods, the parameters of cellular and mitochondrial toxicity were investigated. Our results showed that celecoxib (16 µg/ml) caused a significant decrease in cell viability, mitochondrial membrane potential (MMP), glutathione (GSH) in intact cardiomyocytes and succinate dehydrogenase (SDH) activity, MMP collapse, and mitochondrial swelling, and a significant increase in reactive oxygen species (ROS) formation, lipid peroxidation (LP) and oxidative stress in isolated mitochondria. Also, our results revealed that co-administration of EA (50 and 100 µM) with celecoxib significantly attenuated the cellular and mitochondrial toxicity effects. In this study, we showed that simultaneous treatment with of EA ameliorated the cellular and mitochondrial toxicity induced by celecoxib, with cardiomyocytes presenting normal activity compared to the control group, and mitochondria retaining their normal activity.

Key words

celecoxib - ellagic acid - polyphenols - cardiotoxicity - mitochondria

Publication History

Received: 09 September 2020

Accepted: 03 November 2020

Article published online:
04 December 2020

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