발표논문

제목 [실험연구] 천연알칼로이드 Tetramethylpyrazine이 rat의 뇌의 미세아교세포에서 amyloid β와 interferon-γ에 의해 유도된 염증전 매개물질을 희석시킨다.
천연알칼로이드 Tetramethylpyrazine이 rat의 뇌의 미세아교세포에서 amyloid β와 interferon-γ에 의해 유도된 염증전 매개물질을 희석시킨다.
Tetramethylpyrazine, a natural alkaloid, attenuates pro-inflammatory mediators induced by amyloid β and interferon-γ in rat brain microglia
저자 강동경희대병원 의료진 : 고창남(공동)
타기관 의료진 : 황은주(교신저자), 김미아(1저자), 정우상(공동), 문상관(공동), 조기호(공동), 김영석(공동), 이문성(공동), 김성옥(공동), 이준행(공동)
저널명 European Journal of Pharmacology 2014;740:504-511
게재일 2014.10.05.
논문소개
-초록정리
Neuroinflammation has been consistently reported as a pathological hallmark of Alzheimer's disease and other neurodegenerative diseases. Microglial cells are activated by diverse pathological stimuli and play key roles in development of neuroinflammation. Amyloid β peptide (Aβ), the major constituent of amyloid plaques in Alzheimer's brain, is known to activate cultured microglial cells to produce increased amounts of proinflammatory and neurotoxic factors. Tetramethylpyrazine (TMP) is the main bioactive alkaloid isolated from Ligusticum chuanxiong. TMP has multiple pharmacological activities, including anti-oxidant, anti-inflammatory, and anti-cancer effects. Neuroprotective potential of TMP has been demonstrated in animal models of neuropathologies. However, the efficacy of this compound for controlling Aβ-related neuropathology has not been explored yet. We examined the efficacy of TMP in the repression of inflammatory response in cultured microglial cells stimulated with Aβ25–35 in the presence of interferon (IFN)-γ. TMP significantly inhibited the Aβ25–35 and IFN-γ-stimulated productions of nitric oxide, tumor necrosis factor (TNF)-α, interleukin (IL)-1β, monocyte chemoattractant protein-1, and intracellular reactive oxygen species from primary microglial cells. TMP also effectively reduced Aβ25–35 and IFN-γ-elicited NF-κB activation. In organotypic hippocampal slice cultures (OHSCs), TMP significantly blocked Aβ25–35-induced reactive oxygen species generation and phosphorylation of Akt. Furthermore, TMP also inhibited Aβ1–42-induced TNF-α and IL-1β production in primary microglial cells and neuronal death in OHSCs. These results suggest that TMP provide a possible therapeutic approach for alleviating the inflammatory progression of Alzheimer's disease.
페이지 URL http://www.sciencedirect.com/science/article/pii/S0014299914004889

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