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- W2784120777 abstract "Abstract Introduction In looking for novel non‐amyloid‐based etiologies for Alzheimer's disease, we explore the hypothesis that age‐related myelin loss is an attractive explanation for age‐associated cognitive decline and dementia. Methods We performed a meta‐analysis of data in the National Alzheimer's Coordinating Center database accompanied by quantitative histopathology of myelin and oligodendrocytes (OLs) in frontal cortices of 24 clinically characterized individuals. Pathological findings were further validated in an Alzheimer's disease mouse model and in culture. Results Myelin lesions increased with cognitive impairment in an amyloid‐independent fashion with signs of degeneration appearing before neuronal loss. Myelinating OLs in the gray matter showed greater vulnerability than those in white matter, and the degenerative changes correlated with evidence of DNA damage. Similar results were found in myelinating OL cultures where DNA damage caused aberrant OL cell cycle re‐entry and death. Discussion We present the first comprehensive analysis of the cell biology of early myelin loss in sporadic Alzheimer's disease." @default.
- W2784120777 created "2018-01-26" @default.
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- W2784120777 date "2018-01-09" @default.
- W2784120777 modified "2023-10-05" @default.
- W2784120777 title "DNA damage‐associated oligodendrocyte degeneration precedes amyloid pathology and contributes to Alzheimer's disease and dementia" @default.
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- W2784120777 doi "https://doi.org/10.1016/j.jalz.2017.11.010" @default.
- W2784120777 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5938117" @default.