The abstract is read at the publisher; the summary is JClub's.
Greater arteriolosclerosis severity in an autopsy-confirmed cohort of 1,269 decedents is linked to worse memory, executive function, and language z-scores.
- Why it matters: Vascular and neurodegenerative pathologies co-occur in aging, but it is unclear how specific vascular neuropathologies relate to domain-specific cognitive impairment and whether Alzheimer’s pathology explains those links.
- What they did: Using multivariable linear regression adjusted for age at death, sex, education, and apolipoprotein E ε4 status, the study tested mediation by Alzheimer’s disease neuropathologic change (ADNC) and Lewy body disease (LBD) with 5,000 bootstrap samples.
- The result: ADNC accounted for about 13–29% of arteriolosclerosis–cognition associations and 64–91% of cerebral amyloid angiopathy (CAA)–cognition associations, with CAA effects largely explained by ADNC while arteriolosclerosis direct effects remained significant.
The findingWhy it mattersWhat they didThe result
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