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Misfolded α-Synuclein in Autosomal Dominant Alzheimer's Disease.

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We analyzed Lewy body (LB) pathology in 18 autosomal dominant Alzheimer's disease (ADAD) brains via immunohistochemistry. Real-time quaking induced conversion was used to detect misfolded α-synuclein (α-syn) in 18 living ADAD cerebrospinal fluid (CSF) samples. Concomitant LB pathology was present in 44% ADAD brains. Only 6% CSF samples were positive for misfolded α-syn. In an additional AD sample, all patients with confirmed LB presented misfolded α-syn in postmortem CSF regardless of the LB staging. In conclusion, misfolded α-syn in CSF was scarce in symptomatic living ADAD individuals, in contrast to postmortem brain tissue. These results suggest late appearance of LB pathology in ADAD.

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FORT AZNAR, Laura, et al. Misfolded α-Synuclein in Autosomal Dominant Alzheimer's Disease. Journal of Alzheimers Disease. 2024. ISSN 1387-2877. [consulted: 2 of June of 2026]. Available at: https://hdl.handle.net/2445/210362

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