Ranked Research Questions
Each question is a structured object derived from the corpus's gaps, contradictions, and silences. Ranked by a weighted score of scientific leverage, knowledge gap, importance, feasibility, and evidence density. Arrows show dependency: a question rests on what must be answered first.
q3causalhighscore 0.775
What is the temporal hierarchy between metabolic/vascular dysfunction and amyloid-beta accumulation in early Alzheimer's disease, and is metabolic failure a permissive prerequisite for amyloid-induced neurotoxicity?
leverage 0.90gap 0.90importance 0.95feasibility 0.40evidence 0.50grounded in: gap
depends on: q1
q1mechanistichighscore 0.757
Which specific BBB cell type or molecular pathway (endothelial transcytosis failure, pericyte-mediated vascular dysregulation, or astrocytic endfoot signaling disruption) is the primary mediator of the causal relay from peripheral insulin resistance to hippocampal neuronal insulin resistance?
leverage 0.85gap 0.80importance 0.90feasibility 0.50evidence 0.60grounded in: gap
q2causalhighscore 0.733
Does exercise-induced cognitive protection strictly depend on cerebral insulin receptor signaling, or can it be dissociated from insulin pathways via alternative neurotrophic or vascular mechanisms?
leverage 0.80gap 0.70importance 0.85feasibility 0.60evidence 0.65grounded in: gap
depends on: q1
q5mechanistichighscore 0.73
Is metabolic stress alone sufficient to drive the chronic neuroinflammatory microglial phenotype observed in Alzheimer's disease, independent of amyloid-beta deposition?
leverage 0.80gap 0.85importance 0.80feasibility 0.50evidence 0.55grounded in: gap
depends on: q3
q10translationalhighscore 0.73
What are the clinical trial outcomes of metabolic interventions (e.g., insulin sensitizers, ketogenic diets) on cognitive trajectories in early-stage Alzheimer's disease patients, and do they validate preclinical metabolic hypotheses?
leverage 0.85gap 0.60importance 0.90feasibility 0.70evidence 0.55grounded in: silence
q8causalhighscore 0.718
What is the dynamic relationship between tau pathology propagation and cerebral metabolic stress, and does tau accumulation amplify or buffer metabolic vulnerability in early Alzheimer's disease?
leverage 0.80gap 0.85importance 0.85feasibility 0.40evidence 0.50grounded in: silence
q11causalhighscore 0.718
Does synaptic decline in early Alzheimer's disease precede overt BBB failure because of intrinsic neuronal metabolic stress or soluble amyloid oligomer toxicity rather than compromised insulin transport?
leverage 0.80gap 0.80importance 0.80feasibility 0.50evidence 0.55grounded in: gap
q7boundarymediumscore 0.69
How do sex-specific differences in peripheral insulin resistance and BBB integrity modulate the risk, onset, and progression of Alzheimer's disease?
leverage 0.75gap 0.80importance 0.80feasibility 0.50evidence 0.45grounded in: silence
q9mechanisticmediumscore 0.682
Do neurotrophic factors (BDNF, IGF-1) mediate the vascular remodeling and insulin sensitization effects of exercise in the aging brain, and can their supplementation replicate exercise-induced cognitive benefits?
leverage 0.75gap 0.70importance 0.70feasibility 0.60evidence 0.60grounded in: silence
depends on: q2
q6boundarymediumscore 0.665
What specific BBB cell types and tight junction proteins are most critically dysregulated in early Alzheimer's disease, and how do their failures differentially impact insulin transport versus general barrier integrity?
leverage 0.70gap 0.70importance 0.75feasibility 0.60evidence 0.50grounded in: silence
depends on: q1
q4mechanisticmediumscore 0.662
Under what molecular, temporal, or neuronal context-dependent conditions does AMPK activation shift from promoting cognitive enhancement via autophagy to suppressing memory formation by inhibiting synaptic translation?
leverage 0.75gap 0.80importance 0.70feasibility 0.50evidence 0.40grounded in: contradiction
q12mechanisticmediumscore 0.635
How do AMPK and mTOR isoform expression patterns vary across brain regions, and does this regional specificity explain the divergent cognitive outcomes of metabolic interventions?
leverage 0.70gap 0.75importance 0.65feasibility 0.50evidence 0.45grounded in: silence
depends on: q4