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Antioxidative and Neuroprotective Effects of Extract and Fractions from Adenophora triphylla

잔대 추출물과 이들 분획물들의 항산화 및 뇌신경세포 보호 효과

  • Chung, Mi Ja (Department of Food Science and Nutrition, Gwangju University) ;
  • Lee, Sanghyun (Department of Integrative Plant Science, Chung-Ang University) ;
  • Park, Yong Il (Department of Biotechnology, The Catholic University of Korea) ;
  • Kwon, Ki Han (Department of Food Science and Nutrition, Gwangju University)
  • 정미자 (광주대학교 식품영양학과) ;
  • 이상현 (중앙대학교 식물시스템과학과) ;
  • 박용일 (가톨릭대학교 생명공학과) ;
  • 권기한 (광주대학교 식품영양학과)
  • Received : 2016.06.28
  • Accepted : 2016.09.01
  • Published : 2016.11.30

Abstract

The 70% ethanol extract from Adenophora triphylla showed a strong antioxidant effect and reduced cytotoxicity of $H_2O_2$ in SK-N-SH cells. The chloroform fraction from A. triphylla extract (AT-CH) among the six fractions showed strong DPPH radical and intracellular reactive oxygen species (ROS) scavenger effects and the highest protective effect against $H_2O_2$-induced SK-N-SH cell death. Bioactivity compounds were purified from AT-CH, and the chemical structures of the compounds were determined as ${\beta}$-sitosterol and daucosterol on the basis of $^1H-NMR$, $^{13}C-NMR$, and EI mass spectra. ${\beta}$-Sitosterol and daucosterol also had protective effects against oxidative stress in SK-N-SH cells. Phospho-p38 MAPK levels were elevated by $H_2O_2$ but were inhibited by treatment with AT-CH and phytosterols (${\beta}$-sitosterol and daucosterol) isolated from AT-CH. These results suggest that AT-CH has brain neuroprotective effects against oxidative stress ($H_2O_2$) by inhibiting activation of p38 pathways and scavenging intracellular ROS.

잔대의 70% 에탄올 추출물은 강한 항산화 효과 및 산화적 스트레스 조건에서 뇌신경세포 사멸 억제 효과가 있었다. 6개의 분획물 중에 잔대 추출물의 클로로포름 분획물(AT-CH)은 높은 DPPH 라디칼 소거작용 및 세포 내 활성산소종(ROS) 소거작용을 가지고 있었고 $H_2O_2$에 대항하여 뇌신경 세포(SK-N-SH) 보호 효과가 가장 뛰어났다. 활성이 가장 우수한 클로로포름 분획물을 대상으로 주요 물질을 순수분리한 후 $^1H-NMR$, $^{13}C-NMR$ 그리고 EI mass spectra를 이용하여 화학구조를 분석한 결과 phytosterols(${\beta}$-sitosterol과 daucosterol)이라는 것을 알 수 있었다. ${\beta}$-Sitosterol과 daucosterol 역시 산화적 스트레스에 대항하여 SK-N-SH 세포를 보호하는 작용이 있었다. AT-CH 그리고 이것으로부터 분리된 화합물은 p38 경로를 저해하였다. 이들 결과는 AT-CH는 p38 경로를 저해하고 세포 내 ROS 소거작용에 의해 산화적 스트레스로부터 뇌신경세포 보호 효과를 가질 것이라 제안하였다.

Keywords

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