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NTIS 바로가기한국식품영양과학회지 = Journal of the Korean Society of Food Science and Nutrition, v.42 no.2, 2013년, pp.161 - 167
지나 (부산대학교 식품영양학과 및 김치연구소) , 송가락 (부산대학교 식품영양학과 및 김치연구소) , 길정하 (부산대학교 식품영양학과 및 김치연구소) , 박건영 (부산대학교 식품영양학과 및 김치연구소)
The aim of this study was to investigate the protective effects of methanolic extract from perilla (Perilla frutescens Britt var. japonica) leaves (PLME) on oxidative injury from hydrogen peroxide (
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
인체 피부의 구성 요소는? | 인체 피부는 표피, 진피, 피하조직으로 구성되어 있으며, 이 중 표피에 있는 각질세포(keratinocytes)는 외부 자극(화학적 및 물리적)으로부터 신체를 보호하고, 체온 조절, 보습 유지 등의 작용을 한다. 하지만 각질세포는 이런 외부 자극에 의해 세포내에 산화적 스트레스(oxidative stress)를 일으킨다. | |
각질세포의 역할은? | 인체 피부는 표피, 진피, 피하조직으로 구성되어 있으며, 이 중 표피에 있는 각질세포(keratinocytes)는 외부 자극(화학적 및 물리적)으로부터 신체를 보호하고, 체온 조절, 보습 유지 등의 작용을 한다. 하지만 각질세포는 이런 외부 자극에 의해 세포내에 산화적 스트레스(oxidative stress)를 일으킨다. | |
과량의 reactive oxygen species가 세포막에 미치는 영향은? | 산화적 스트레스와 reactive oxygen species(ROS)는 다양한 기전을 통하여 암, 염증, 심장질환, 당뇨병, 비만 및 노화 등의 여러 가지 질병의 발생과 진행에 관여한다(1,2). 과산화수소는 직접적으로 피부 각질 세포 내에서 산화적 스트레스를 유발하며(3), 과량의 ROS는 세포막의 구성 성분인 불포화지방산을 공격하여 지질과산화물질인 malondialdehyde(MDA)를 생성한다. 세포 내에 많은 MDA가 축적되면 세포막에서 교차결합, 중합 및 변성이 일어나 이온 수송, 효소 활성 및 세포 표면의 부착상태를 변성시키며 DNA의 염기와 반응하여 돌연변이성 병변을 일으킨다고 알려져 있다(4). |
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