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Related Experiment Videos

Alzheimer's disease and angiogenesis.

Anthony H Vagnucci1, William W Li

  • 1Department of Psychiatry, The Cambridge Hospital, Cambridge, MA, USA.

Lancet (London, England)
|February 25, 2003
PubMed
Summary

Alzheimer's disease may stem from brain endothelial cells producing toxic substances and promoting neuron death. Inhibiting this abnormal blood vessel growth (angiogenesis) could offer new treatments.

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Area of Science:

  • Neuroscience
  • Vascular Biology
  • Pathology

Background:

  • The pathological basis of Alzheimer's disease (AD) remains largely unknown.
  • Current hypotheses include cerebral hypoperfusion, inflammation, genetic factors, and molecular brain lesions.
  • A central role for the brain endothelium in AD pathogenesis has not been fully explored.

Purpose of the Study:

  • To propose a hypothesis that vascular endothelial cells play a critical role in Alzheimer's disease.
  • To suggest that abnormal angiogenesis in the brain contributes to neuronal destruction in AD.
  • To explore the potential of anti-angiogenic therapies for AD prevention and treatment.

Main Methods:

  • Review of existing literature on Alzheimer's disease mechanisms.
  • Analysis of epidemiological data on drug use and AD incidence.
  • Formulation of a hypothesis based on the proposed role of brain endothelium and angiogenesis.

Main Results:

  • The hypothesis posits that brain endothelial cells in AD secrete amyloid precursor substrate and neurotoxic peptides.
  • Activated endothelial cells, driven by angiogenesis due to hypoxia and inflammation, are implicated.
  • Epidemiological studies suggest certain drugs (NSAIDs, statins, H2 blockers, calcium-channel blockers) may prevent AD, potentially by inhibiting angiogenesis.

Conclusions:

  • Alzheimer's disease may be an angiogenesis-dependent disorder.
  • Targeting abnormal brain endothelial cells and inhibiting angiogenesis could be a novel therapeutic strategy for AD.
  • Further laboratory and clinical studies are warranted to validate this hypothesis.

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