Abstract
Acetamiprid (ACP) is a novel neonicotinoid insecticide used for controlling insect pests. Resveratrol (RSV) is a natural polyphenol that possesses anti-oxidant, anti-inflammatory and anti-apoptotic actions. The current research explores the mechanism of ACP-induced cardiotoxicity and the alleviative effects of RSV. Male rats were allocated to four groups of ten each. Rats were treated daily for 90 days via oral route. Control rats received distilled water, ACP rats received 25 mg acetamiprid/kg, RSV rats received 20 mg resveratrol/kg and ACP + RSV rats received both ACP and RSV. ACP exposure increased serum creatine phosphokinase activity and cardiac troponin level. It also induced oxidative stress, as evidenced by the glutathione reduction, and malondialdehyde elevation, as well as the detrimental histopathological and immunohistochemical changes in the myocardium. Gene expression analysis revealed down-regulation in the mRNA expression of the survival-related genes α7 nAChR, Erk and Bcl-2, and up-regulation in the apoptosis-related genes Jnk, Bax and Caspase-3. Conversely, the concomitant administration of ACP with RSV alleviated most of the aforementioned toxic impacts. It can be concluded that ACP induces cardiotoxicity by dysregulating the mRNA expression of α7 nAChR and its downstream targets. Additionally, RSV is proved to be a promising ameliorative agent against ACP-induced cardiotoxicity.
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