Cardioprotective effects of insulin on carbon monoxide-induced toxicity in male rats

Human & Experimental Toxicology
Kaveh TabrizianMahmoud Hashemzaei

Abstract

Carbon monoxide (CO) poisoning is a significant cause of death especially in developing countries. The current study investigated cardioprotective effects of insulin in CO-poisoned rats. Male rats were exposed to 3000 ppm CO for 1 h. Insulin (100 and 120 U/kg intraperitoneally) was immediately administered after CO exposure and on the next 4 days, on a daily basis (a total of 5 doses). On day 5, animals were euthanized, and the hearts were harvested for Western blotting and histopathological studies. The electrocardiograms (ECG) were recorded postexposure to CO and after the completion of insulin treatment period. Histopathological evaluations showed reduction of myocardial necrosis in insulin-treated animals compared to controls. BAX/BCL2 ratio, as a proapoptotic index, was significantly reduced in treatment groups ( p < 0.01). The ECG findings showed no differences among groups; also, compared to control animals, myocardial Akt levels were not markedly affected by insulin. The current study showed that insulin significantly reduces myocardial necrotic and apoptotic indices in CO-poisoned rats.

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Citations

Aug 16, 2019·Drug and Chemical Toxicology·Ramin RezaeeMahmoud Hashemzaei
Dec 22, 2020·Pharmacological Research : the Official Journal of the Italian Pharmacological Society·Fatemeh YarmohammadiGholamreza Karimi
Feb 6, 2020·Toxicology Reports·Hiroshi KinoshitaAristides Tsatsakis

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Methods Mentioned

BETA
Protein Assay

Software Mentioned

Gene Tools
SPSS

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