🧫
PH-PS treatment in 5×FAD Alzheimer's disease mice
active
experiment
Created: 2026-04-10T22:33:51
By: etl-v1-backfill
Quality:
50%
✓ SciDEX
ID: exp-5bccf030-55e6-4bd9-a954-1a49050e5dc8
🧫 Experiment Protocol
ValidationAlzheimer's disease5×FAD transgenic miceproposed
This comprehensive study investigated the neuroprotective effects of Pseudostellaria heterophylla polysaccharide (PH-PS) in 5×FAD transgenic mice, a well-established animal model of Alzheimer's disease. The experiment examined multiple endpoints including cognitive function, neuropathology, neuroinflammation, and gut microbiome changes. Researchers characterized the PH-PS extract (molecular weight 8.771 kDa, composed of 57.78% glucose, 41.52% galactose, and 0.70% arabinose) and administered it to 5×FAD mice. The study employed behavioral testing to assess learning and spatial memory, histological analysis to evaluate amyloid β plaque burden and glial activation, 16S rRNA sequencing to analyze gut microbiome composition, and molecular analyses to examine inflammatory markers and amyloid-degrading enzymes. The research demonstrated that PH-PS treatment improved cognitive deficits, reduced amyloid pathology, modulated microglial and astrocytic polarization from pro-inflammatory (M1/A1) to anti-inflammatory (M2/A2) phenotypes, restored intestinal barrier function, and promoted beneficial gut bacteria while suppressing harmful inflammatory bacteria.
PRIMARY OUTCOME
learning and spatial memory deficits
EXPECTED OUTCOMES
1. The intervention targeting the nominated disease mechanism shifts learning and spatial memory deficits in the predicted direction relative to the matched control arm.
2. Secondary disease-relevant readouts in Alzheimer's disease remain directionally concordant with the primary endpoint rather than showing isolated single-assay effects.
3. The effect persists after adjustment for baseline covariates, batch effects, or repeated-measures structure used in the study design.
SUCCESS CRITERIA
Ameliorated memory deficits, reduced amyloid β build-up, suppressed reactive glia and astrocytes, improved gut microbiota composition
PROTOCOL
1. Establish 5×FAD transgenic mice cohorts for Alzheimer's disease and predefine inclusion, exclusion, and quality-control criteria before intervention. 2. Apply the experimental manipulation described for the nominated disease mechanism, alongside matched control or comparator arms, and document dose, exposure window, and sample timing in a locked protocol log. 3. Measure learning and spatial memory deficits together with orthogonal secondary readouts such as molecular, imaging, behavioral, or safety endpoints that are appropriate to the title and study design. 4. Use blinded outcome assessment where feasible, prespecified statistical analysis, and replicate the core readout across biological replicates or an independent validation subset. 5. Interpret results against the baseline study rationale: This comprehensive study investigated the neuroprotective effects of Pseudostellaria heterophylla polysaccharide (PH-PS) in 5×FAD transgenic mice, a well-established animal model of Alzheimer's disease. The experiment examined multiple endpoints including cogn
LINKED HYPOTHESES
h_seaad_001· Microglial TREM2 downregulation impairs damage-associated response in late-stage Alzheimer's diseaseh-var-fd2fd0825b· APOE4-Targeted Ultrasonic Lipidation Enhancement for Gamma Oscillation Restoration in Alzheimer's Diseaseh-4dd0d19b· LRP1-Dependent Tau Uptake Disruptionh-b234254c· TREM2-mediated microglial tau clearance enhancementh-55ef81c5· Extracellular Vesicle Biogenesis Modulation
Source: PMID 38750854 ↗
🧫 Experiment Extras
PATHWAY
amyloid beta clearance, neuroinflammation, gut-brain axis
MARKET PRICE
$0.50
STATUS
proposed
▸Metadataorigin_type: v1_polymorphic_backfill
| origin_type | v1_polymorphic_backfill |
| source_table | experiments |
| _schema_version | 1 |
📊 Evidence Profile
Evidence Balance
+0%
Certainty
0%
Debates
0
Incoming
0
Outgoing
0
0 supporting
0 contradicting
0 neutral
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