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• W2337252009 endingPage "e1005551" @default.
• W2337252009 startingPage "e1005551" @default.
• W2337252009 abstract "Misfolding and aggregation of host proteins are important features of the pathogenesis of neurodegenerative diseases including Alzheimer's disease, Parkinson's disease, frontotemporal dementia and prion diseases. In all these diseases, the misfolded protein increases in amount by a mechanism involving seeded polymerization. In prion diseases, host prion protein is misfolded to form a pathogenic protease-resistant form, PrPSc, which accumulates in neurons, astroglia and microglia in the CNS. Here using dual-staining immunohistochemistry, we compared the cell specificity of PrPSc accumulation at early preclinical times post-infection using three mouse scrapie strains that differ in brain regional pathology. PrPSc from each strain had a different pattern of cell specificity. Strain 22L was mainly associated with astroglia, whereas strain ME7 was mainly associated with neurons and neuropil. In thalamus and cortex, strain RML was similar to 22L, but in substantia nigra, RML was similar to ME7. Expression of 90 genes involved in neuroinflammation was studied quantitatively using mRNA from thalamus at preclinical times. Surprisingly, despite the cellular differences in PrPSc accumulation, the pattern of upregulated genes was similar for all three strains, and the small differences observed correlated with variations in the early disease tempo. Gene upregulation correlated with activation of both astroglia and microglia detected in early disease prior to vacuolar pathology or clinical signs. Interestingly, the profile of upregulated genes in scrapie differed markedly from that seen in two acute viral CNS diseases (LaCrosse virus and BE polytropic Friend retrovirus) that had reactive gliosis at levels similar to our prion-infected mice." @default.
• W2337252009 created "2016-06-24" @default.
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• W2337252009 date "2016-04-05" @default.
• W2337252009 modified "2023-10-11" @default.
• W2337252009 title "Prion Strain Differences in Accumulation of PrPSc on Neurons and Glia Are Associated with Similar Expression Profiles of Neuroinflammatory Genes: Comparison of Three Prion Strains" @default.
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• W2337252009 doi "https://doi.org/10.1371/journal.ppat.1005551" @default.
• W2337252009 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4821575" @default.
• W2337252009 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/27046083" @default.
• W2337252009 hasPublicationYear "2016" @default.
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