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자료유형
학술저널
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대한바이러스학회 JOURNAL OF BACTERIOLOGY AND VIROLOGY 大韓바이러스學會誌 제25권 제2호
발행연도
1995.12
수록면
235 - 242 (8page)

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Scrapie-induced amyloid plaque formation in mouse is very useful animal model in research of human Alzheimer's disease. It has been suggested that sulfated glycoprotein-2 (SGP-2) is involved in neuronal cell death. In this study, we have investigated the role of SGP-2 in formation of amyloid plaques in brains of IM rnouse infected with 87V scrapie agent. Both control and scrapie-injected mice were sacrificed after 300 days incubation period and total cellular RNAs were extracted from cerebral cortex, brain stem, cerebellum and entire brain. Northern blot analysis showed that SGP-2 mRNA label was significantly increased in brains of scrapie-infected mice than in control mice. In dissected tissue samples, the level of SGP-2 mRNA was elevated in cerebellum and brain stem but not in cerebral cortex. Since amyloid plaques were mainly found in cerebral cortex of scrapie-injected mice, the observed changes of SGP-2 mRNA level were not exactly correlated with the site of amyloid plaque formation. It has previously shown that SGP-2 mRNA levels were also increased in several nonneural tissues under going programmed cell death and in some tissues of neuronal degeneration. We speculate that the overall increase of SGP-2 mRNA levels in brains of scrapie-infected mice may be a compensatory response to a neurodegenerative cascade control.

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