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NTIS 바로가기Journal of nutrition and health, v.50 no.1, 2017년, pp.25 - 31
박재현 (제주대학교 생물학과) , 김성훈 (제주대학교 생물학과) , 이선령 (제주대학교 생물학과)
Purpose: Neuroinflammation is mediated by activation of microglia implicated in the pathogenesis of neurodegenerative disorders such as Alzheimer's disease and Parkinson's disease. Inhibition of neuroinflammation may be an effective solution to treat these brain disorders. Petalonia binghamiae is kn...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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미세아교세포의 과도한 활성화는 어떤 것에 의해 발생하는가? | 미세아교세포의 과도한 활성화는 lipopolysccharides(LPS), β-amyloid related proteins, human immunodeficiency virus (HIV)의 외부 단백질인 gp120과 같은 물질들에 의해 일어나는 것으로 알려져 있으며, nitric oxide (NO), prostaglandin E2 (PGE2), interleukin-1β (IL-1β), interleukin-6(IL-6), tumor necrosis factor-α (TNF-α) 등과 같은 염증성 매개 인자 및 활성산소종 (reactive oxygen species, ROS)의 분비를 촉진하여 신경독성을 유발한다.11,12 LPS에 의한 신경염증반응은 Toll-like receptor 4 (TLR 4) 신호전달경로의 활성화에 의해 조절되거나 독성물질로 작용하는 NO나 PG의 생성에 영향을 미치는 inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2)에 의해 조절되기도 하는데 이러한 일련의 과정은 nuclear fator (NF)-κB와 activator protein (AP)-1의 신호전달 조절 기전과 밀접한 연관성이 있는 것으로 알려져 있다. | |
미세아교세포는 무엇인가? | 뇌에서 대식세포의 역할을 하는 미세아교세포 (microglialcell)는 중추신경계 (central nervous system, CNS) 내 면역 반응을 조절하는 중요한 효과세포 (effector cell)이다. 이들의 활성화는 약물이나 독소에 의한 이물질을 제거하고 신경 성장 인자를 분비하여 CNS의 항상성을 유지하는데 중요한 역할을 한다. | |
활성화된 미세아교세포의 중요한 역할은? | 뇌에서 대식세포의 역할을 하는 미세아교세포 (microglialcell)는 중추신경계 (central nervous system, CNS) 내 면역 반응을 조절하는 중요한 효과세포 (effector cell)이다. 이들의 활성화는 약물이나 독소에 의한 이물질을 제거하고 신경 성장 인자를 분비하여 CNS의 항상성을 유지하는데 중요한 역할을 한다.1 그러나 손상된 뉴런으로부터 발생하는 신호, 외부 자극에 의해 변형된 비정상적인 형태의 단백질의 축적, 병원체의 침투와 같은 유해한 스트레스에 노출되면 미세아교세포의 활성이 지나치게 증가되어 과도한 뇌에서 대식세포의 역할을 하는 미세아교세포 (microglialcell)는 중추신경계 (central nervous system, CNS) 내 면역 반응을 조절하는 중요한 효과세포 (effector cell)이다. |
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