Alpha-synuclein co-pathology in Down syndrome-associated Alzheimer's disease.

ABSTRACT:

Introduction

Alpha-synuclein (αSyn) seed amplification assay (SAA) enables in vivo study of αSyn but remains underexplored in Down syndrome-associated Alzheimer's disease (DSAD).

Methods

We analyzed αSyn-SAA in cerebrospinal fluid (CSF) from 270 adults with Down syndrome, from the Down Alzheimer Barcelona Neuroimaging Initiative and from the AD21 cohort from the Department of Neurology at the University Hospital, Ludwig Maximilian University of Munich, Germany. Neuropathological examinations were conducted in 19 brain donors (five with ante mortem CSF). Participants were classified as asymptomatic or symptomatic (prodromal/dementia) Alzheimer's disease (AD). CSF Aβ1-42/1-40, CSF and plasma p-Tau181, and neurofilament light chain (NfL) levels were measured. Neuropathological

SUBMITTER: Bernhardt AM 

PROVIDER: S-EPMC12173960 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature