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Veterinary Research Forum، جلد ۷، شماره ۱، صفحات ۴۷-۵۴
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عنوان انگلیسی Effects of histidine and vitamin C on isoproterenol-induced acute myocardial infarction in rats
چکیده انگلیسی 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 (40 mg kg-1) and vitamin C (40 mg kg-1) alone and combined daily for 21 days. Propranolol (10 mg kg-1) was orally administered daily for 10 days (from day 11 to day 21). Myocardial infarction was induced by subcutaneous injections of 150 mg kg-1 of isoproterenol at an interval of 24 hr on days 20 and 21. Blood and tissue samples were taken for histopathological and biochemical evaluations following electrocardiography recording on day 21. 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.
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نویسندگان مقاله معصومه مرادی arzeloo | moradi arzeloo
postgraduate student, department of pathobiology, faculty of veterinary medicine, urmia university, urmia, iran
سازمان اصلی تایید شده: دانشگاه ارومیه (Urmia university)

امیر عباس فرشید | amir abbas
department of pathobiology, faculty of veterinary medicine, urmia university, urmia, iran
سازمان اصلی تایید شده: دانشگاه ارومیه (Urmia university)

اسماعیل تمدن فرد |
department of basic sciences, faculty of veterinary medicine, urmia university, urmia, iran
سازمان اصلی تایید شده: دانشگاه ارومیه (Urmia university)

سیامک عصری رضایی | asri rezaei
department of internal medicine and clinical pathology, faculty of veterinary medicine, urmia university, urmia, iran
سازمان اصلی تایید شده: دانشگاه ارومیه (Urmia university)

نشانی اینترنتی http://vrf.iranjournals.ir/article_19038_8f0cc873bcb6b9d7a42f5c6014addfca.pdf
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