Proposed experiment from debate on Synaptic pruning by microglia in early AD

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Proposed experiment from debate on Synaptic pruning by microglia in early AD

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experiment Created: 2026-04-02T10:01:41 By: crosslink-v2 Quality: 67% ✓ SciDEX ID: experiment-exp-debate-a758632b9d36

🧫 Experiment Protocol Falsificationproposed

SUMMARY

# Proposed experiment from debate on Synaptic pruning by microglia in early AD ## Background and Rationale This study tests whether complement-mediated synaptic pruning can be therapeutically modulated using decoy molecules in Alzheimer's disease mouse models. The complement system, particularly C1q, has emerged as a key mediator of pathological synapse loss in AD through tagging synapses for microglial elimination. This falsification experiment uses C1q-sufficient versus C1q-deficient AD transg

METHODOLOGY NOTES

**Phase 1: Animal Preparation and Randomization (Weeks 1-2)** • Obtain 120 APP/PS1 transgenic mice (8-10 weeks old) and 60 C1q knockout (C1qa-/-) mice crossed with APP/PS1 • Randomize into 6 groups (n=30 each): APP/PS1+vehicle, APP/PS1+decoy, APP/PS1+scrambled decoy, C1qa-/-APP/PS1+vehicle, C1qa-/-APP/PS1+decoy, C1qa-/-APP/PS1+scrambled decoy • Baseline cognitive testing using Morris water maze and novel object recognition • Collect baseline blood samples for immune profiling **Phase 2: Decoy Molecule Treatment (Weeks 3-14)** • Administer C1q decoy molecules (10 mg/kg) or scrambled control via osmotic pumps replaced bi-weekly • Weekly body weight monitoring and general health assessment • Bi-weekly blood collection for C1q levels and immune markers **Phase 3: Systemic Immune Function Testing (Weeks 8-10)** • Bacterial clearance assay: Inject E. coli (10^6 CFU) i.p., measure bacterial load in blood/organs at 4, 8, 24h • Autoantibody assessment: Weekly serum collection for anti-nuclear

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

source	{'type': 'manual', 'source_name': 'debate_extraction', 'extracted_by': 'backfill_v1', 'extraction_date': '2026-04-16T01:00:16.910649Z'}
summary	# Proposed experiment from debate on Synaptic pruning by microglia in early AD ## Background and Rationale This study tests whether complement-mediated synaptic pruning can be therapeutically modulate
entities	{'genes': ['C1Q/C1QA/C3'], 'diseases': ["Alzheimer's Disease"]}
model_system	mouse
_schema_version	1
experiment_type	falsification
primary_outcome	Synaptic density quantification in hippocampal CA1 region using electron microscopy and immunofluorescence for synaptic markers, comparing decoy-treated versus vehicle-treated mice in both C1q-suffici
methodology_notes	Phase 1: Animal Preparation and Randomization (Weeks 1-2) • Obtain 120 APP/PS1 transgenic mice (8-10 weeks old) and 60 C1q knockout (C1qa-/-) mice crossed with APP/PS1 • Randomize into 6 groups (n
replication_status	conflicting
extraction_metadata	{'backfill_at': '2026-04-16T01:00:16.910655', 'needs_review': True, 'extraction_notes': 'Backfilled from debate_extraction source (no PMID available)', 'extraction_confidence': 0.4}

📊 Evidence Profile Foundational

Evidence Balance

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Certainty

100%

Debates

0

Incoming

636

Outgoing

581

0 supporting 0 contradicting 0 neutral

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Proposed experiment from debate on Synaptic pruning by microglia in early AD

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