• 제목/요약/키워드: Aster scaber Thunberg (AS)

검색결과 2건 처리시간 0.014초

PC12세포와 동물모델에서의 기억력 장애를 유도하는 산화적스트레스에 대한 취나물과 모과 복합추출물의 개선 효과 (Ameliorative Effect of Aster scaber Thunberg and Chaenoleles sinensis Koehne Complex Extracts Against Oxidative Stress-induced Memory Dysfunction in PC12 Cells and ICR Mice)

  • 박찬규;최수정;신동훈
    • 한국약용작물학회지
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    • 제27권6호
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    • pp.365-375
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    • 2019
  • Background: Oxidative stress plays an important role in neuro-degenerative disorders such as Alzheimer's disease. Oxidative stress is mediated by reactive oxygen species (ROS), which are implicated in the pathogenesis of numerous diseases, and account for the toxicity of a wide range of compounds. Methods and Results: In order to study the neuro-protective effect of the complex extracts of Aster scaber Thunberg (AS) and Chaenoleles sinensis Koehne (CSK) against hydrogen peroxide in PC12 cells, cell viability was evaluated by the MTT assay using tetrazole, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and the intracellular ROS levels were determined the by 2',7'-dichlorofluorescein diacetate (DCF-DA) assay. In order to examine the anti-amnesic effects of the complex extracts of AS and CSK, behavioral tests were performed on male ICR mice. The ameliorating effect of the complex extracts against Aβ1-42-induced learning and memory impairment was analyzed by y-maze and passive avoidance tests. The AS and CSK extracts showed neuro-protective activity both in vitro and in vivo, and the neuro-protective effect of their 60 : 40 (AS : CSK) mixture was better than that of the other mixtures. Moreover, the complex extracts synergistically inhibited acetylcholinesterase activity and rapid peroxidation. Conclusions: A mixture of the AS and CSK extracts could be used to develop functional foods and serve as raw materials for the development of therapeutics against Alzheimer's disease.

참취에서 분리한 다당의 면역자극 활성 (Immunostimulating Activites of Polysaccharide Fractions isolated from Aster scaber Thunb.)

  • 성수경;이영경;조장원;김은영;강동주;홍희도
    • 한국식품영양학회지
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    • 제28권5호
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    • pp.821-828
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    • 2015
  • ASW0 is a polysaccharide derived from the perennial herb Aster scaber Thunberg. We isolated ASW0, a fraction of crude polysaccharide, by means of ethanol precipitation and dialysis after hot water extraction to investigate its physicochemical properties and immunostimulatory effects. ASW0 contains neutral sugar (45.7%), acidic sugar (51.6%), protein (2.3%), and 2-keto-3-deoxy-D-manno-octonate (KDO) (0.4%). The neutral sugar in ASW0 (in mole percentage) was mainly composed of arabinose (34.5 mol%), glucose (31.1 mol%), galactose (14.9 mol%), and rhamnose (8.1 mol%), which are characteristic of pectic polysaccharides. ASW0 also contained small amounts of xylose, mannose, and fucose. The anti-complementary activity of ASW-0 was similar to that of polysaccharide K (used as positive control). ASW0 exhibited no cytotoxicity in RAW 264.7 macrophages and dramatically increased nitric oxide (NO) production in a dose dependent manner ($0.3{\sim}30{\mu}g/mL$). Also, macrophages stimulated with ASW0 showed enhanced production of immunostimulatory cytokines such as interleukin-6 (IL-6) and tumor necrosis factor alpha ($TNF-{\alpha}$) in a dose dependent manner. These results suggest that the ASW0 have a potent immunostimulatory effect and can be used as a natural immune health ingredient.