Vascular Contribution to Alzheimer's Disease — Beyond Amyloid

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Vascular Contribution to Alzheimer's Disease — Beyond Amyloid

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experiment Created: 2026-04-02T10:01:41 By: crosslink-v2 Quality: 67% ✓ SciDEX ID: experiment-exp-wiki-experiments-vascular

🧫 Experiment Protocol Validationproposed

SUMMARY

# Vascular Contribution to Alzheimer's Disease — Beyond Amyloid ## Background and Rationale Alzheimer's disease (AD) pathogenesis extends beyond amyloid-beta accumulation to include significant vascular dysfunction. The vascular hypothesis of AD posits that cerebrovascular abnormalities, including blood-brain barrier (BBB) breakdown, reduced cerebral blood flow, and endothelial dysfunction, contribute independently to cognitive decline and interact synergistically with amyloid pathology. This mu

METHODOLOGY NOTES

Phase 1 (Months 1-6): Recruit 300 participants across three groups: cognitively normal controls (n=100), MCI (n=100), and AD dementia (n=100). Inclusion criteria: ages 65-85, MMSE scores appropriate for group classification, stable medications. Exclusion: contraindications to MRI, significant psychiatric disorders, or other neurodegenerative diseases. Phase 2 (Months 7-18): Baseline assessments including comprehensive neuropsychological testing (CDR, ADAS-Cog, TMT), lumbar puncture for CSF collection, and retinal photography. Advanced MRI protocol: 3T scanner with dynamic contrast-enhanced sequences using gadolinium-DTPA (0.1 mmol/kg), arterial spin labeling for perfusion mapping, DTI with 64 directions, and structural T1/FLAIR imaging. Simultaneous amyloid PET using 18F-florbetapir. Phase 3 (Months 19-30): CSF analysis for traditional biomarkers (Aβ42, tau, p-tau) and novel vascular markers (PDGFR-β, sTREM2, VEGF) using ELISA and Luminex multiplex assays. Quantitative analysis of BBB

▸Metadatasource: {'type': 'manual', 'source_name': 'wiki'

source	{'type': 'manual', 'source_name': 'wiki', 'extracted_by': 'backfill_v1', 'extraction_date': '2026-04-16T01:00:16.897895Z'}
summary	# Vascular Contribution to Alzheimer's Disease — Beyond Amyloid ## Background and Rationale Alzheimer's disease (AD) pathogenesis extends beyond amyloid-beta accumulation to include significant vascul
entities	{'genes': ['ABCB1/ANGPT1/CAV1'], 'diseases': ["Alzheimer's Disease"]}
model_system	human
_schema_version	1
experiment_type	validation
primary_outcome	Validate Vascular Contribution to Alzheimer's Disease — Beyond Amyloid
methodology_notes	Phase 1 (Months 1-6): Recruit 300 participants across three groups: cognitively normal controls (n=100), MCI (n=100), and AD dementia (n=100). Inclusion criteria: ages 65-85, MMSE scores appropriate f
replication_status	replicated
extraction_metadata	{'backfill_at': '2026-04-16T01:00:16.897900', 'needs_review': True, 'extraction_notes': 'Backfilled from wiki source (no PMID available)', 'extraction_confidence': 0.4}

📊 Evidence Profile Foundational

Evidence Balance

+0%

Certainty

100%

Debates

0

Incoming

562

Outgoing

487

0 supporting 0 contradicting 0 neutral

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Vascular Contribution to Alzheimer's Disease — Beyond Amyloid

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