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Basic Science and Pathogenesis.

Lucas Nogueira de Carvalho Pelegrini1, Rebeca Carvalho Bom2, Danilo Barroso de Sousa1

  • 1Federal University of São Carlos, São Carlos, São Paulo, Brazil.

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Summary
This summary is machine-generated.

The APOE ε4 allele is a significant genetic risk factor for Alzheimer's disease (AD). However, this study found no link between ADAM10 gene variations and AD diagnosis in older adults.

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Area of Science:

  • Neuroscience
  • Genetics
  • Gerontology

Background:

  • Alzheimer's disease (AD) is a progressive neurodegenerative disorder with known risk factors.
  • The APOE ε4 allele is a significant genetic risk factor for AD.
  • ADAM10, an alpha-secretase enzyme, is involved in amyloid precursor protein processing and is a potential AD biomarker, but its role in AD pathogenesis via polymorphisms is unclear.

Purpose of the Study:

  • To investigate the influence of APOE and ADAM10 polymorphisms on cognitive performance.
  • To determine the association between these genetic factors and Alzheimer's disease diagnosis.

Main Methods:

  • 135 older adults (cognitively unimpaired and AD patients) were assessed.
  • Sociodemographic, clinical, and cognitive data were collected using standardized instruments.
  • APOE and ADAM10 polymorphisms were genotyped, and associations with cognitive performance and AD diagnosis were analyzed using logistic regression, controlling for age and education.

Main Results:

  • Participants with AD were older, less educated, and had poorer cognitive function and functional status.
  • The APOE ε4 allele was strongly associated with an increased likelihood of AD diagnosis (OR=10.11, p=0.003).
  • No significant associations were found between ADAM10 single nucleotide polymorphisms (SNPs) and AD diagnosis.

Conclusions:

  • This study confirms APOE ε4 as a major genetic risk factor for Alzheimer's disease.
  • No evidence supports an association between ADAM10 polymorphisms and AD diagnosis.
  • Further research is needed to understand ADAM10's role in cognitive aging and AD pathophysiology.