ArticleAlzheimer's & dementia : the journal of the Alzheimer's Association2023
Hippocampal connectivity and memory decline in cognitively intact APOE ε4 carriers.
Article in Alzheimer's & dementia : the journal of the Alzheimer's Association, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 13 citations in OpenAlex.
- Using diffusion MRI to relate hippocampal subfield microstructure to delayed verbal memory in cognitively intact individuals at genetic risk for developing Alzheimer's disease.Experimental gerontology · 2026Article
- Neuroprotective mechanisms of dexmedetomidine in perioperative neurocognitive disorders: From molecular pathways to clinical translation.Journal of anesthesia and translational medicine · 2025Review
- Neurite Degradation Mediates the Effect of Amyloid Deposition on Global Cognition in Asymptomatic Older Adults.medRxiv : the preprint server for health sciences · 2025Article
- The Effect of APOE ε4 Allele on Dynamic Local Spontaneous Brain Activity and Functional Integration in Alzheimer's Disease.Human brain mapping · 2025Article
- Hippocampal vascular supply and its mediating role in systemic physiological influences on hippocampal volume.Frontiers in aging neuroscience · 2025Article
- Cerebral hyperactivation across the Alzheimer's disease pathological cascade.Brain communications · 2024Review
- Altered hippocampal connectivity dynamics predicts memory performance in neuropsychiatric lupus: a resting-state fMRI study using cross-recurrence quantification analysis.Lupus science & medicine · 2023Article
- Associations between lifestyle, genetic risk for Alzheimer's disease, and longitudinal brain atrophy in the UK Biobank (Alzheimer's & dementia (Amsterdam, Netherlands)Article
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Authors and funding
8 authors at 4 institutions in 1 country.
Funding
Abstract
introductionResting-state functional magnetic resonance imaging (fMRI) graph theory may help detect subtle functional connectivity changes affecting memory prior to impairment.
methodsCognitively normal apolipoprotein E (APOE) ε4 carriers/noncarriers underwent longitudinal cognitive assessment and one-time MRI. The relationship of left/right hippocampal connectivity and memory trajectory were compared between carriers/noncarriers.
resultsSteepness of verbal memory decline correlated with decreased connectivity in the left hippocampus, only among APOE ε4 carriers. Right hippocampal metrics were not correlated with memory and there were no significant correlations in the noncarriers. Verbal memory decline correlated with left hippocampal volume loss for both carriers and noncarriers, with no other significant volumetric findings. DISCUSSION: Findings support early hippocampal dysfunction in intact carriers, the AD disconnection hypothesis, and left hippocampal dysfunction earlier than the right. Combining lateralized graph theoretical metrics with a sensitive measure of memory trajectory allowed for detection of early-stage changes in APOE ε4 carriers before symptoms of mild cognitive impairment are present. HIGHLIGHTS: Graph theory connectivity detects preclinical hippocampal changes in APOE ε4 carriers. The AD disconnection hypothesis was supported in unimpaired APOE ε4 carriers. Hippocampal dysfunction starts asymmetrically on the left.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.