Association between neurodegenerative plasma biomarkers and geriatric depression in older adults with and without clinical dementia in Kinshasa, Democratic Republic of the Congo.

(2015) showed that elderly subjects with late-onset depression had a higher plasma Aβ40/Aβ42 ratio than non-depressed participants, as well as a marginally significant reduction in Aβ42 concentrations in the cerebrospinal fluid ( 27 ).

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