Brain microglia were activated in sporadic CJD but almost unchanged in fatal familial insomnia and G114V genetic CJD

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• 作者：Qi Shi (11)
  Wu-Ling Xie (11)
  BaoYun Zhang (11)
  Li-Na Chen (11)
  Yin Xu (11)
  Ke Wang (11)
  Ke Ren (11)
  Xiao-Mei Zhang (11)
  Cao Chen (11)
  Jin Zhang (11)
  Xiao-Ping Dong (11) (12)
  
• 关键词：Prions ; Microglia ; Creutzfeldt ; Jakob disease ; Fatal familial insomnia ; G114V ; Cytokines
• 刊名：Virology Journal
• 出版年：2013
• 出版时间：December 2013
• 年：2013
• 卷：10
• 期：1
• 全文大小：744KB
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• 作者单位：Qi Shi (11)
  Wu-Ling Xie (11)
  BaoYun Zhang (11)
  Li-Na Chen (11)
  Yin Xu (11)
  Ke Wang (11)
  Ke Ren (11)
  Xiao-Mei Zhang (11)
  Cao Chen (11)
  Jin Zhang (11)
  Xiao-Ping Dong (11) (12)
  
  11. State Key Laboratory for Infectious Disease Prevention and ControlCollaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases (Hangzhou), National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Chang-Bai Rd 155, Beijing, 102206, People’s Republic of China
  12. Chinese Academy of Sciences Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
  
• ISSN：1743-422X

文摘

Background Microglial activations have been described in different subtypes of human prion diseases such as sporadic Creutzfeldt-Jakob disease (CJD), variant CJD, Kuru and Gerstmann-Str?ussler-Scheinker disease (GSS). However, the situation of microglia in other genetic prion diseases such as fatal familial insomnia (FFI) and familial CJD remains less understood. The brain microglia was evaluated comparatively between the FFI, G114V and sCJD cases in the study. Methods Specific Western blots, immunohistochemical and immunofluorescent assays were used to detect the changes of microglia and ELISA tests were used for levels of inflammatory cytokines. Results Western blots, immunohistochemical and immunofluorescent assays illustrated almost unchanged microglia in the temporal lobes of FFI and G114V gCJD, but obviously increased in those of sCJD. The Iba1-levels maintained comparable in six different brain regions of FFI and G114V cases, including thalamus, cingulate gyrus, frontal cortex, parietal cortex, occipital cortex and temporal cortex. ELISA tests for inflammatory cytokines revealed significantly up-regulated IL-1β, IL-6 and TNF-α in the brain homogenates from sCJD, but not in those from FFI and G114V gCJD. Conclusion Data here demonstrates silent brain microglia in FFI and G114V gCJD but obviously increased in sCJD, which reflects various pathogenesis of different human prion diseases subtypes.