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  2. Chung Shan Medical University
  3. Project/研究計畫(老師)
  4. PAs/MMP-9酵素系統在小白鼠感染廣東住血線蟲造成嗜伊紅性腦膜炎之致病機轉及治療(I)
 
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PAs/MMP-9酵素系統在小白鼠感染廣東住血線蟲造成嗜伊紅性腦膜炎之致病機轉及治療(I)

  • Details
Project title
94學年度國家科學及技術委員會補助研究計畫
Acronym
專題研究計畫
Internal ID
NSC94-2320-B040-029
Principal Investigator
Lai, Shih-Chan  
Status
research project
Start Date
August 1, 2005
End Date
July 31, 2006
Organizations
School of Medicine  
Partner Organizations
National Science and Technology Council  
Project Web Site
https://www.grb.gov.tw/search/planDetail?id=1132695
Keywords
廣東住血線蟲
腦膜炎
血纖維蛋白
原活化因子
基質金屬蛋白
-9
Albendazole
thalidomide
JAK
STAT
NF-κB
TNF-α
IL-1β
Description
血纖維蛋白.原活化因子(plasminogen activators, PAs)是絲胺酸(serine)家族的蛋白.,有tissue-type plasminogen activator (tPA)及urokinase-type plasminogen activator (uPA)兩種。PAs可將血纖維蛋白.原(plasminogen)活化成血纖維蛋白.(plasmin);而血纖維蛋白.可活化基質金屬蛋白.(matrix metalloproteinases, MMPs),進而參與各種生理或病理過程。MMP-9會分解細胞外質(extracellular matrix, ECM),增加血腦障壁(blood-brain barrier, BBB)的通透性,媒介腦部的發炎反應,引起神經發炎。本實驗室先前的研究顯示PAs及MMP-9酵素系統與嗜伊紅性腦膜炎(eosinophilic meningitis)有關,且可以做為廣東住血線蟲(Angiostrongylus cantonensis)引起腦膜炎的指標性酵素。干擾素(interfern gamma, IFN-γ)的刺激訊號作用可誘導活化細胞中調控增殖相關的訊息蛋白(Janus kinase, JAK)及訊息傳遞與轉錄活化因子(signal transducer and activator of transcription, STAT)通路,使腫瘤壞死因子(tumor necrosis factor alpha, TNF-α)、介白素(interleukin-1 beta, IL-1β)分泌增多,進而誘導核轉錄因子(nuclear factor kappa B, NF-κB)的活化訊號進一步被這些細胞激素增強。因此,本研究擬以廣東住血線蟲感染BALB/c小白鼠,誘發嗜伊紅性腦膜腦炎的模式進行研究。第一年將探討BALB/c小白鼠腦脊髓液中的PAs及MMP-9產生的訊息傳遞是否可藉由細胞激素(TNF-α、IL-1β)誘發JAK/STAT路徑。第二年將探討albendazole-thalidomide混合治療後,細胞激素(IFN-γ、IL-5 、TNF-α、IL-1β)、訊息蛋白質(JAK、STAT、NF-κB),PAs及MMP-9是否也相對的發生改變,進一步找出廣東住血線蟲感染時導致嗜伊紅性腦膜炎之致病機轉及治療機制,由此模式提供臨床上治療此症之參考。
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