期刊
NEUROREPORT
卷 13, 期 13, 页码 1695-1700出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/00001756-200209160-00025
关键词
microglia; neurodegeneration; prion; PrP; scrapie; transwell
Previous studies have demonstrated a role for microglia in the neuronal loss that occurs in the transmissible spongiform encephalopathies or prion diseases. In the present studies, the processes that lead to the death of neurones treated with synthetic peptides derived from the prion protein (PrP) were fully activated within 1 h, although neuronal cell death was not seen until 24 h later. Similarly, neurones exposed to PrP peptides for only 1 h activated microglia and a temporal relationship between the production of interleukin-6, an indicator of microglial activation, and microglial killing of PrP-treated neurones was also demonstrated. Activation of microglia and microglia-mediated killing of PrP-treated neurones or scrapie-infected neuroblastoma cells were maximal only when microglia were in direct contact with neurones.
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