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Article Publish Status: FREE
Abstract Title:

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

Abstract Source:

Vet Res Forum. 2016 ;7(1):47-54. Epub 2016 Mar 15. PMID: 27226887

Abstract Author(s):

Masoumeh Moradi-Arzeloo, Amir Abbas Farshid, Esmaeal Tamaddonfard, Siamak Asri-Rezaei

Article Affiliation:

Masoumeh Moradi-Arzeloo

Abstract:

In the present study, we investigated the effects of histidine and vitamin C (alone or in combination) treatments against isoproterenol (aβ-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 biochemicalevaluations 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 andsuperoxide 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 havesimilar protective effects with propranolol. Cardioprotective effects of histidine and vitamin C may be associated with their ability to reduce free radical-induced toxic effects.

Study Type : Animal Study

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