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- W2992552744 abstract "Depression has been linked to Alzheimer’s disease as either an increased risk factor for its development or as a prodromal symptom. The neurobiological basis for such an association, however, remains poorly understood. Numerous studies have examined whether changes in amyloid beta (A[beta]) metabolism, which are implicated in the pathogenesis of Alzheimer’s disease, are also found in depression. In this paper, we investigated the relationship between depressive symptoms and cerebrospinal fluid (CSF) A[beta] indices in otherwise healthy, cognitively normal elderly with late-life major depression (LLMD) and controls using a longitudinal approach, which is a novel contribution toward the literature. Significantly lower levels of CSF A[beta]42 were observed in the LLMD group at baseline and were associated with more severe depressive symptoms. During longitudinal follow-up, the depressed group remained cognitively unchanged, but was significantly less depressed than at baseline. A greater improvement in depressive symptoms was associated with increases in CSF A[beta]42 levels in both groups. Increases in CSF A[beta]42 and A[beta]40 were also associated with increased CSF total-tau levels. Our results suggest that LLMD may be associated with state-dependent effects of CSF A[beta]42 levels. Future studies should determine whether the association reflects state-dependent changes in neuronal activity and/or brain amyloid burden in depression." @default.
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- W2992552744 date "2016-09-28" @default.
- W2992552744 modified "2023-09-27" @default.
- W2992552744 title "State-dependent alterations in cerebrospinal fluid A42 levels in cognitively intact elderly with late-life major depression" @default.
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