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Abstract Title:

Cytoprotective Effect of Hydroalcoholic Extract of Pinus eldarica Bark against H2O2-Induced Oxidative Stress in Human Endothelial Cells.

Abstract Source:

Iran Biomed J. 2016 Mar 2. Epub 2016 Mar 2. PMID: 26931383

Abstract Author(s):

Fatemeh Babaee, Leila Safaeian, Behzad Zolfaghari, Shaghayegh Haghjoo Javanmard

Article Affiliation:

Fatemeh Babaee

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 (25-1000µg/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 concentrationand 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.

Study Type : Human In Vitro

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Sayer Ji
Founder of GreenMedInfo.com

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