Comparative evolutionary genomics of the HADH2 gene encoding Aβ-binding alcohol dehydrogenase/17β-hydroxysteroid dehydrogenase type 10 (ABAD/HSD10)
2006

Evolution of the HADH2 Gene and Its Role in Alzheimer's Disease

Sample size: 21 publication 10 minutes Evidence: high

Author Information

Author(s): Alexandra T Marques, Agostinho Antunes, Pedro A Fernandes, Maria J Ramos

Primary Institution: REQUIMTE, Departamento de Química, Faculdade de Ciências, Universidade do Porto, Portugal

Hypothesis

How has the HADH2 gene evolved across different species and what implications does this have for Alzheimer's disease?

Conclusion

The HADH2 gene has maintained a conserved structure and function across a wide evolutionary distance, which may be significant for understanding its role in Alzheimer's disease.

Supporting Evidence

  • HADH2 genes showed a six-exon/five-intron organization across vertebrates and nematodes.
  • Conserved noncoding regions were identified among mammals, indicating potential regulatory elements.
  • Evidence of positive selection was found in the HADH2 gene across eutherian mammals.

Takeaway

Scientists studied a gene called HADH2 that helps with important processes in the body. They found that this gene is very similar in many animals, which might help us understand diseases like Alzheimer's.

Methodology

Comparative genomic analysis of HADH2 genes from 21 different organisms, including mammals, amphibians, fishes, insects, and nematodes.

Limitations

The study primarily focused on eutherian mammals, which may limit the generalizability of the findings to other groups.

Digital Object Identifier (DOI)

10.1186/1471-2164-7-202

Want to read the original?

Access the complete publication on the publisher's website

View Original Publication