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Cardiopreventive effect of ethanolic extract of Date Palm Pollen against isoproterenol induced myocardial infarction in rats through the inhibition of the angiotensin-converting enzyme.
Experimental and Toxicologic Pathology : Official Journal of the Gesellschaft Für Toxikologische Pathologie 2017 October 3
The present study aimed to examine the putative preventive effect of the ethanolic extract Date Palm Pollen (DPP, Phoenix dactylifera L., family Arecaceae) on isoproterenol-induced myocardial infarction (MI) in rats. Twenty four rats were randomly divided into four groups including control. They were treated with DPP extract (400mg/kg) and clopidogrel (0.2mg/kg) for 7days followed by myocardial injury induction using subcutaneous isoproterenol (100mg/kg) with an interval of 24h for two days (6th and 7th day). Administration of isoproterenol exhibited indicative changes in the ECG pattern evidenced by significant elevation of ST-segment and cardiac injury markers viz.; troponin-T, creatine phosphokinase (CPK), alanine aminotransferase (ALT) and lactate dehydrogenase (LDH) by 315%, 71%, 64% and 170%, respectively as compared to control. Additionally, the angiotensin-converting enzyme (ACE) activity in plasma was increased by 33% associated to histological myocardial necrosis. However, pre-co-treatment with DPP extract improved the cardiac biomarkers injury, normalized cardiac function indices and prevented the ventricular remodeling process through inhibition of ACE activity by 34% and the inhibition of the generation of radical oxygen species. Extensive characterization of this DPP extract using LC-HRMS revealed numerous flavonoids and phenols compounds which could be endowed with cardiopreventive actions. Overall, these results proved that DPP extract has preventive effects on cardiac remodeling process.
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