산화스트레스가 유도된 망막색소상피세포에서 폴리페놀 화합물이 보이는 세포보호 효과

• 영문명: Cytoprotective Effect of Polyphenolic Compounds against Oxidative Stress in Cultured Retinal Pigment Epithelial Cells
• 발행기관: 대한안과학회
• 저자명: 서경훈(Kyung Hoon Seo) 유승영(Seung Young Yu) 곽형우(Hyung Woo Kwak)
• 간행물 정보: 『대한안과학회지』Ophthalmological Society,volume57,number1, 106~112쪽, 전체 7쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 2016.01.30

영문 초록

Purpose: Grape seed-derived polyphenols (GSPs) provide a concentrated source of polyphenols having antioxidant capacity. In this study we investigated the cytoprotective effect of GSP against oxidative stress-induced cell damage in cultured human retinal pigment epithelial (RPE) cells. Methods: Cultured adult retinal pigment epithelium (ARPE)-19 cells were incubated with GSP from Vitis vinifera (0.1, 0.5, 1, 5 or10 μg/mL) for 24 hours and treated with hydrogen peroxide (H2O2, 0.4 mM) for 24 hours to induce oxidative stress. Cell viability was measured using 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay. Intracellular reactive oxygen species (ROS) was quantified using 2′,7′-dichlorofluorescein diacetate (DCF-DA) fluorescence. Results: The percentage of viable RPE cells was significantly lower in cultures treated with H2O2 0.4 mM than in control cultures. GSP significantly reduced H2O2-induced cell death in a dose dependent manner. GSP at 0.1, 0.5, 1, 5 and 10 μg/mL significantly reduced cell mortality due to the treatment with H2O2. Intracellular ROS production increased significantly in cultures treated with H2O2 0.4 mM compared with control. There was a significant dose-dependent decrease in intracellular ROS levels after treatment of RPE with GSP. Conclusions: GSP, a natural polyphenolic compound, can protect RPE cells from H2O2-induced oxidative stress and reduce intracellular ROS production by scavenging free radicals. This suggests potential effects of polyphenolic compounds against retinal diseases associated with oxidative stress.

키워드

Grape seed extract Oxidative stress Polyphenols Proanthocyanidins Retinal pigment epithelium