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Moyamoya disease: A human model for chronic hypoperfusion and intervention in Alzheimer's disease
Xiang Zou1,2,3,4, Yifan Yuan1, Yujun Liao1,2,3,4
1Department of Neurosurgery Huashan Hospital Fudan University Shanghai China.
Introduction:
Chronic cerebral hypoperfusion has been considered the etiology for sporadic Alzheimer's disease (AD). However, no valid clinical evidence exists due to the similar risk factors between cerebrovascular disease and AD.
Methods:
We used moyamoya disease (MMD) as a model of chronic hypoperfusion and cognitive impairment, without other etiology interference.
Results:
Based on the previous reports and preliminary findings, we hypothesized that chronic cerebral hypoperfusion could be an independent upstream crucial variable, resulting in AD, and induce pathological hallmarks such as amyloid beta peptide and hyperphosphorylated tau accumulation.
Discussion:
Timely intervention with revascularisation would help reverse the brain damage with AD hallmarks and lead to cognitive improvement.
Insights
Chronic cerebral hypoperfusion, a potential cause of Alzheimer's disease (AD), was studied using moyamoya disease. Revascularization may reverse AD pathology and improve cognition.
Area of Science:
- Neurology
- Neuroscience
- Pathology
Background:
- Chronic cerebral hypoperfusion is a suspected cause of sporadic Alzheimer's disease (AD).
- Clinical evidence is limited due to overlapping risk factors with cerebrovascular disease.
- Moyamoya disease offers a unique model to study hypoperfusion's effects without confounding factors.
Purpose of the Study:
- To investigate chronic cerebral hypoperfusion as an independent cause of Alzheimer's disease.
- To explore the role of hypoperfusion in the accumulation of AD pathological hallmarks.
- To assess the potential of revascularization as an intervention for hypoperfusion-induced AD.
Main Methods:
- Utilized moyamoya disease as a clinical model for chronic cerebral hypoperfusion and cognitive impairment.
- Analyzed preliminary findings and existing reports to formulate hypotheses.
- Focused on the etiological link between hypoperfusion and AD development.
Main Results:
- Hypothesized that chronic cerebral hypoperfusion is a critical upstream factor in AD.
- Proposed that hypoperfusion induces key AD pathological hallmarks, including amyloid-beta and hyperphosphorylated tau accumulation.
- Suggested that revascularization could reverse AD-related brain damage.
Conclusions:
- Chronic cerebral hypoperfusion may be a direct and independent cause of Alzheimer's disease.
- Revascularization interventions show promise in mitigating AD pathology and improving cognitive function in hypoperfusion models.
- Further research is warranted to validate these findings in broader clinical settings.
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