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Abstract Title:

Antioxidant Effects of Oleuropein on Hydrogen Peroxide-Induced Neuronal Stress-An In Vitro Study.

Abstract Source:

Antiinflamm Antiallergy Agents Med Chem. 2019 Feb 1. Epub 2019 Feb 1. PMID: 30714532

Abstract Author(s):

Altug Kucukgul, Mehmet Mustafa Isgor, Vesile Duzguner, Azime Kucukgul, Meryem Nur Atabay

Article Affiliation:

Altug Kucukgul

Abstract:

BACKGROUND: Persistent oxidative stress can lead to chronic inflammation and mediate most chronic diseases including neurological disorders. Oleuropein has been shown to be a potent antioxidant molecule in olive oil leaf having antioxidative properties.

OBJECTIVE: The aim of this study was to investigate the protective effects of oleuropein against oxidative stress in human glioblastoma cells.

METHOD: Human glioblastoma cells (U87) were pretreated with oleuropein (OP) essential oil 10µM. After 30 minutes, 100 µM H2O2 was added to the cells for three hours. Cell survival was quantified by colorimetric MTT assay. Glutathione level, total oxidant capacity, total antioxidant capacity and nitric oxide levels were determined by using specific spectrophotometric methods. Relative gene expression level of iNOS was performed by qRT-PCR method.

RESULTS: According to viability results, effective concentration of H2O2 (100µM) significantly decreased cell viability and oleuropein pretreatment significantly prevented the cell losses. Oleuropein regenerated total antioxidant capacity and glutathione levels decreased by H2O2 exposure. In addition, nitric oxide and total oxidant capacity levels were also decreased afteradministration of oleuropein in treated cells.

CONCLUSION: Oleuropein was found to have potent antioxidative properties in human glioblastoma cells. However, further studies and validations are needed in order to understand exact neuroprotective mechanism of oleuropein.

Study Type : In Vitro Study

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