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Cytoprotective Effect of Hydroalcoholic Extract of Pinus Eldarica Bark Against H2o2-Induced Oxidative Stress in Human Endothelial Cells Pubmed



Babaee F1 ; Safaeian L1 ; Zolfaghari B2 ; Javanmard SH3
Authors
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Authors Affiliations
  1. 1. Department of Pharmacology and Toxicology, Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Department of Pharmacognosy, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
  3. 3. Applied Physiology Research Center, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran

Source: Iranian Biomedical Journal Published:2016


Abstract

Background: Pinus eldarica is a widely growing pine in Iran consisting of biologically active constituents with antioxidant properties. This study investigates the effect of hydroalcoholic extract of P. eldarica bark against oxidative damage induced by hydrogen peroxide (H2O2) in human umbilical vein endothelial cells (HUVECs). Methods: The total phenolic content of P. eldarica extract was determined using Folin-Ciocalteu method. The cytotoxicity of P. eldarica extract (25-1000 μg/ml) on HUVECs was assessed using 3-(4,5- Dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) method. Cytoprotective effect of P. eldarica extract (25-500 μg/ml) on H2O2-induced oxidative stress was also evaluated by MTT assay. The intra- and extra-cellular hydroperoxides concentration and ferric reducing antioxidant power (FRAP) were measured in pretreated cells. Results: The total phenolic content of P. eldarica extract was estimated as 37.04±1.8% gallic acid equivalent. P. eldarica extract (25-1000 μg/ml) had no cytotoxic effect on HUVECs viability. The pretreatment of HUVECs with P. eldarica extract at the concentrations of 50-500 μg/ml significantly reduced the cytotoxicity of H2O2. P. eldarica extract decreased hydroperoxides concentration and increased FRAP value in intra-cellular fluid at the concentration range of 100-500 μg/ml and in extra-cellular fluid at the concentration range of 25-500 μg/ml. Conclusions: This study revealed the antioxidant and cytoprotective effects of P. eldarica extract against H2O2-induced oxidative stress in HUVECs. Concerning the high content of phenolic compounds in P. eldarica, more research is needed to evaluate its clinical value in endothelial dysfunction and in other oxidative conditions. © 2016, Pasteur Institute of Iran. All rights reserved.
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