Preventive Effects of Selenium Yeast, Chromium Picolinate ...
J Pharm Pharm Sci () 16(5) 848 - 867, 2013
Preventive Effects of Selenium Yeast, Chromium Picolinate, Zinc Sulfate and their Combination on Oxidative Stress, Inflammation, Impaired Angiogenesis and Atherogenesis in Myocardial Infarction in Rats
Nouf M. AL-Rasheed1, Hala A. Attia1, 2 *, Raeesa A. Mohamed3 , Nawal M. Al-Rasheed1 and Maha Al-Amin1
1 Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Kingdom of Saudi Arabia. 2 Department of Biochemistry, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt. 3 Department of Anatomy, College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia.
Received, August 7, 2013; Revised, December 28, 2013; Accepted, December 30, 2013; Published December 31, 2013.
ABSTRACT - Purpose: Accumulating evidences suggest a critical role of trace metal dyshemostasis in oxidative stress and cardiac dysfunction after myocardial infarction (MI). This study investigated the cardioprotective effects of selenium yeast (Se), chromium picolinate Cr(pic)3, zinc sulfate (Zn) and their combination on isoproterenol (ISO)-induced MI. Methods: Rats were divided into six groups: normal control, ISO control, Se-pretreated (0.1 mg/kg), Cr(pic)3-pretreated (400 ?g/kg), Zn-pretreated (30 mg/kg) and metal combination-pretreated groups. All metals were administered for 28 days and at the 27th day, MI was induced by subcutaneous injection of ISO (85 mg/kg) once for two consecutive days. Results: ISO control group showed hyperlipidemia, elevation of cardiac biomarkers and lipid peroxidation and increased immunostaining of p47 phox NADPH oxidase subunit in addition to decreased levels of glutathione (GSH), superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx). Cardiac levels of tumor necrosis factor- (TNF-) were increased, while vascular endothelial growth factor (VEGF, the major angiogenic factor) was decreased. Pretreatment with Se normalized the cardiac enzymes, lipid peroxidation, GSH, SOD, CAT, GPx, TNF- and VEGF (P ................
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