On the mechanisms of melatonin in protection of aluminum phosphide cardiotoxicity

(2017) On the mechanisms of melatonin in protection of aluminum phosphide cardiotoxicity. Archives of Toxicology.

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Abstract

Aluminum phosphide (AlP), one of the most commonly used pesticides worldwide, has been the leading cause of self-poisoning mortalities among many Asian countries. The heart is the main organ affected in AlP poisoning. Melatonin has been previously shown to be beneficial in reversing toxic changes in the heart. The present study reveals evidence on the probable protective effects of melatonin on AlP-induced cardiotoxicity in rats. The study groups included a control (almond oil only), ethanol 5 (solvent), sole melatonin (50 mg/kg), AlP (16.7 mg/kg), and 4 AlP + melatonin groups which received 20, 30, 40 and 50 mg/kg of melatonin by intraperitoneal injections following AlP treatment. An electronic cardiovascular monitoring device was used to record the electrocardiographic (ECG) parameters. Heart tissues were studied in terms of oxidative stress biomarkers, mitochondrial complexes activities, ADP/ATP ratio and apoptosis. Abnormal ECG records as well as declined heart rate and blood pressure were found to be related to AlP administration. Based on the results, melatonin was highly effective in controlling AlP-induced changes in the study groups. Significant improvements were observed in the activities of mitochondrial complexes, oxidative stress biomarkers, the activities of caspases 3 and 9, and ADP/ATP ratio following treatment with melatonin at doses of 40 and 50 mg/kg. Our results indicate that melatonin can counteract the AlP-induced oxidative damage in the heart. This is mainly done by maintaining the normal balance of intracellular ATP as well as the prevention of oxidative damage. Further research is warranted to evaluate the possibility of using melatonin as an antidote in AlP poisoning. © 2017, Springer-Verlag Berlin Heidelberg.

Item Type: Article
Additional Information: cited By 8
Keywords: adenosine diphosphate; adenosine triphosphate; almond oil; aluminum phosphide; biological marker; caspase 3; caspase 9; glutathione peroxidase; melatonin; reactive oxygen metabolite; succinate dehydrogenase (ubiquinone); troponin I, animal experiment; animal model; animal tissue; Article; blood pressure; cardiotoxicity; controlled study; drug dose comparison; ECG abnormality; electrocardiography; heart protection; heart rate; heart tissue; LD100; LD50; male; median survival time; nonhuman; oxidative stress; priority journal; QRS complex; rat
Subjects: pharmacology
Divisions: Education Vice-Chancellor Department > Faculty of Medicine > Department of Basic Science > Department of Physiology Pharmacology Medical
Depositing User: دکتر مهری غلامی
URI: http://eprints.abzums.ac.ir/id/eprint/2339

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