Tier 3 — preclinical

Urolithin A improves Alzheimer's disease cognition and restores mitophagy and lysosomal functions

Hou Y, Chu X, Park JH, Zhu Q, Hussain M, Li Z, Madsen HB, Yang B, Wei Y, Wang Y, Fang EF, Croteau DL, Bohr VA
Alzheimer's & Dementia 2024 20(6):4212-4233

Bibliography

PubMed
PMID 38753870
PubMed Central
PMC11180933
DOI
10.1002/alz.13847

Study snapshot

DesignLong-term intervention across three transgenic mouse models of Alzheimer's disease with behavioral, electrophysiological and molecular analysis
ModelAPP/PS1, 3xTgAD and 3xTgAD/Polβ+/- mice plus cellular lysosomal assays
SampleMultiple mouse cohorts across three Alzheimer models
InterventionLong-term oral Urolithin A treatment
DurationUp to 5 months in mouse models
EndpointsLearning and memory; Olfactory function; Amyloid-beta and tau pathology; Long-term potentiation; Mitophagy and lysosomal function; Neuroinflammation

What the study showed, in plain terms

In three Alzheimer's mouse models, long-term Urolithin A improved learning, memory and olfactory performance, reduced amyloid and tau pathology, and restored mitophagy/lysosomal function. This is unusually broad preclinical brain evidence, but no completed human Urolithin A trial has yet shown cognitive or disease-modifying benefit.

Key findings

Learning, memory and olfactory outcomes improved in multiple AD mouse models.

Amyloid-beta and tau pathology were reduced and long-term potentiation improved.

Urolithin A restored mitophagy and lysosomal pathways, including cathepsin-related signaling.

Neuroinflammatory markers were reduced.

What this study can and cannot tell us

All efficacy findings were in mouse/cellular models.

Human brain exposure is dominated by conjugated metabolites and remains a translational question.

No human Alzheimer or Parkinson outcome trial validates these effects.

Editorial review

Reviewed by the Biohack Blueprint research team

Last verified

Dr. Khaled Mahmoud, MBBChCritical Care Medicine, Longevity Science & Editorial Direction Dr. Amr Yasser, PhDCardiometabolic, Musculoskeletal, Gut & Bioavailability Dr. Abdulla Mostafa, PhDCellular Senescence, Neurological, Mitochondrial & Brain-Ageing Biology