Abstract
The present study was designed to evaluate the cardioprotective effect of Tunisian flaxseed oil (Linum usitatissimum) against isoproterenol-induced myocardial infarction in rats by studying hypertensive and cardiac damage markers especially electrocardiographic changes and troponin T serum level. In vitro, the extracted oil showed an important inhibition of angiotensin converting enzyme (ACE) with an IC50 = 85.96 μg/ml. According to chemical analysis, this extract is composed essentially of alpha linolenic acid (ALA), an n-3 polyunsaturated fatty acid (58.59 %). Male rats were randomly divided into three groups, namely control (C), isoproterenol (ISO), and isoproterenol-treated group with flaxseed oil (FO + ISO). Isoproterenol injection showed changes in ECG pattern, including ST-segment elevation (diagnostic of myocardial infarction), increase in the serum levels of Troponin T and cardiac injury markers (creatine kinase-MB (CK-MB), lactate dehydrogenase (LDH), alkaline phosphatase (ALP), aspartate transaminase (AST), and alanine transaminase (ALT)). However, Linum oil pre-co-treatment prevented almost all the parameters isoproterenol-induced myocardial infarction in rats. Results of the present study proved that flaxseed oil has a significant effect by heart protection against isoproterenol-induced myocardial infarction through beneficial effect of the important fraction of ALA.
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Acknowledgements
This research was supported by the Tunisian Ministry of Higher Education and Scientific Research and the Tunisian Ministry of Public Health. Authors wish to thank Mbarek Nasri and Chedly Tmar for their assistance and cooperation.
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Amal Derbali and Kais Mnafgui contributed equally to this work.
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Derbali, A., Mnafgui, K., Affes, M. et al. Cardioprotective effect of linseed oil against isoproterenol-induced myocardial infarction in Wistar rats: a biochemical and electrocardiographic study. J Physiol Biochem 71, 281–288 (2015). https://doi.org/10.1007/s13105-015-0411-2
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DOI: https://doi.org/10.1007/s13105-015-0411-2