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Apolipoprotein E in progressive supranuclear palsy in Japan
1Department of Neuropsychiatry, Faculty of Medicine, University of Tokyo, Japan.
Molecular Psychiatry
|July 1, 1997
Summary
This study investigated Apolipoprotein E (ApoE) allele frequencies in progressive supranuclear palsy (PSP). Researchers found a significant increase in the ApoE epsilon 2 allele frequency in PSP patients compared to controls.
Area of Science:
- Neuroscience
- Genetics
- Pathology
Background:
- Progressive supranuclear palsy (PSP) is a rare neurodegenerative disease with diverse psychiatric and neurologic symptoms.
- Elucidating risk factors for sporadic PSP is crucial for understanding its pathology.
- Apolipoprotein E4 (ApoE4) is a known risk factor for Alzheimer's disease (AD), which shares neurofibrillary tangle (NFT) pathology with PSP.
Purpose of the Study:
- To investigate the frequency of Apolipoprotein E (ApoE) alleles in patients with progressive supranuclear palsy (PSP).
- To determine if ApoE epsilon 4, a risk factor for Alzheimer's disease, is associated with PSP.
- To explore the role of other ApoE alleles in PSP pathogenesis.
Main Methods:
- Analysis of Apolipoprotein E (ApoE) allele frequencies in a series of Japanese progressive supranuclear palsy (PSP) cases.
- Comparison of allele frequencies between PSP patients and healthy Japanese controls.
Main Results:
- No significant increase in the ApoE epsilon 4 allele frequency was observed in PSP cases compared to controls.
- A significant increase in the ApoE epsilon 2 allele frequency was found in PSP patients relative to controls.
Conclusions:
- The ApoE epsilon 4 allele is not a significant risk factor for progressive supranuclear palsy (PSP) in the studied population.
- The increased frequency of the ApoE epsilon 2 allele suggests a potential role in the pathogenesis of PSP.