Effects of histidine and vitamin C on isoproterenol-induced acute myocardial infarction in rats

سال انتشار: 1395
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 48

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شناسه ملی سند علمی:

JR_VRFAN-7-1_008

تاریخ نمایه سازی: 25 آبان 1402

چکیده مقاله:

In the present study, we investigated the effects of histidine and vitamin C (alone or in combination) treatments against isoproterenol (a β-adrenergic receptor agonist)-induced acute myocardial infarction in rats. We used propranolol (a β-adrenergic receptor blocker) to compare the results. Rats were given intraperitoneal injections of histidine (۴۰ mg kg-۱) and vitamin C (۴۰ mg kg-۱) alone and combined daily for ۲۱ days. Propranolol (۱۰ mg kg-۱) was orally administered daily for ۱۰ days (from day ۱۱ to day ۲۱). Myocardial infarction was induced by subcutaneous injections of ۱۵۰ mg kg-۱ of isoproterenol at an interval of ۲۴ hr on days ۲۰ and ۲۱. Blood and tissue samples were taken for histopathological and biochemical evaluations following electrocardiography recording on day ۲۱. Isoproterenol elevated ST segment, increased heart weight, heart rate, serum activities of aspartate transaminase, lactate dehydrogenase, creatine kinase-MB and heart tissue content of malondialdehyde, and decreased R wave amplitude and superoxide dismutase and catalase activities of heart tissue. Necrosis, edema and inflammatory cells infiltration were observed in myocardial tissue sections. Our results indicated that histidine and vitamin C alone, and especially in combination prevent isoproterenol-induced cardiotoxicity and have similar protective effects with propranolol. Cardioprotective effects of histidine and vitamin C may be associated with their ability to reduce free radical-induced toxic effects.

نویسندگان

Masoumeh Moradi-Arzeloo

Postgraduate student, Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran

Amir Abbas Farshid

Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran

Esmaeal Tamaddonfard

Department of Basic Sciences, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran

Siamak Asri-Rezaei

Department of Internal Medicine and Clinical Pathology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran

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