ArticleTranslational psychiatry2024
The mediating effect of the amygdala-frontal circuit on the association between depressive symptoms and cognitive function in Alzheimer's disease.
Article in Translational psychiatry, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Biomarker profiles in late-life depression and Alzheimer's disease across and beyond the A/T/N framework: A scoping review.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026Review
- Abnormal effective connectivity of default mode network subsystems affects depressive symptoms and sleep disturbances in adolescents with internet gaming disorder.BMC psychiatry · 2026Article
- Ventral hippocampal-postcentral gyrus functional connectivity mediates the association of APOE ε4 gene dose, depressive symptoms, and cognitive function in mild cognitive impairment with subsyndromal depression.Frontiers in aging neuroscience · 2026Article
- Cognition, Diagnosis, and Treatment of Alzheimer's Disease: A Review.Recent patents on biotechnology · 2026Review
- Subtype-Specific Brain Atrophy and White Matter Alterations in Mild Cognitive Impairment.Brain sciences · 2025Article
- Correlation study of 5-HT in brain with cognitive function and anxious-like behavior in APP/PS1 transgene mice.Sleep and biological rhythms · 2025Article
- A bibliometric analysis of research on dementia comorbid with depression from 2005 to 2024.Frontiers in neuroscience · 2025Article
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9 authors.
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Abstract
Depressive symptoms occur commonly in Alzheimer's disease (AD). Although abnormalities in the amygdala-frontal circuit have been linked to emotional dysregulation and cognitive impairment, the neurological basis underlying these associations in AD patients with depressive symptoms (ADD) is unclear. We aimed to investigate the relationship between the amygdala-frontal circuit and depressive symptoms and cognitive function in ADD. We recruited 60 ADD, 60 AD patients without depressive symptoms (ADND), and 60 healthy controls (HC). Functional connectivity (FC) maps of the bilateral amygdala were compared. Fractional anisotropy (FA) of the amygdala-frontal circuit connected by the uncinate fasciculus (UF) was calculated using automated fiber quantification (AFQ). In addition, mediation analysis was performed to explore the effects of the amygdala-frontal circuit on the relationship between depressive symptoms and cognitive function. We found decreased bilateral amygdala FC with the inferior frontal gyrus (IFG) in the ADD group compared to the ADND and HC groups. Moreover, FA in the left frontal UF (nodes 64-97) was significantly lower in the ADD group than ADND group. Notably, amygdala-based FC with IFG and the left frontal UF FA mediated the relationship between depressive symptoms and cognitive function in ADD, with mediating effects ranging between 15 and 18%. Our study is the first to demonstrate the mediating effect of functional and microstructural abnormalities in the amygdala-frontal circuit in ADD. The findings suggest that the amygdala-frontal circuit may underlie emotional dysregulation in ADD, providing potential targets for treatment strategies.
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