
NeuroImage Clinical, Journal Year: 2025, Volume and Issue: unknown, P. 103781 - 103781
Published: April 1, 2025
The overlapping features of depressive symptoms and apathy hinder their differentiation in clinical practice, hence a greater understanding neurosubstrates dementia its subtypes is necessary. Ninety-two patients (Alzheimer's disease [AD, n = 52]; subcortical ischemic vascular [SIVD, 40]), 30 cognitively normal subjects were evaluated using the Apathy Evaluation Scale (AES), Beck's Depression Inventory (BDI), brain magnetic resonance imaging (MRI). Grouped by AES/BDI scores, hubs depression/apathy identified comparing MRI metrics including fractional amplitude low-frequency fluctuation (fALFF) resting-state functional MRI, mean kurtosis (MK) diffusion imaging. Associations between with analyzed. Comparing low-AES high-AES groups, fALFF indicated pervasive changes mainly within default mode network (DMN) frontoparietal (FPN). low-BDI high-BDI reflected DMN, FPN, salience (SAN). Contrarily, MK showed focal DMN SAN regions from same group-wise comparisons. While was more correlated DMN/FPN for AES than BDI significantly SIVD AD, left anterior cingulate cortex right insula BDI, but AD (all P < 0.01). Topologically, centered at posterior poles, respectively. These findings suggest that dual-modal could reflect distinct neuropathological basis SIVD.
Language: Английский