Buffering Mechanisms in Aging
Author Information
Author(s): Bergman Aviv, Atzmon Gil, Ye Kenny, MacCarthy Thomas, Barzilai Nir
Primary Institution: Albert Einstein College of Medicine
Hypothesis
Some favorable genotypes act as mechanisms that buffer the deleterious effect of age-related disease genes.
Conclusion
The study identifies genetic mechanisms that may protect against age-related diseases, suggesting that longevity genes can buffer harmful genotypes.
Supporting Evidence
- Centenarians have a higher prevalence of favorable genotypes associated with longevity.
- Genotypes associated with age-related diseases decrease in prevalence as the population ages.
- Some deleterious genotypes are maintained in centenarians due to the protective effect of longevity genes.
Takeaway
Some people live a long time because they have special genes that help protect them from getting sick as they age.
Methodology
The study analyzed genotypic frequencies among Ashkenazi Jews aged 50-110, focusing on 66 common allelic site polymorphisms in 36 candidate genes.
Potential Biases
Potential bias due to the homogeneity of the study population.
Limitations
The study is limited to a specific population (Ashkenazi Jews), which may not generalize to other groups.
Participant Demographics
Participants included 305 centenarians (mean age 98.2) and their offspring, along with a control group of 265 individuals matched in age.
Statistical Information
P-Value
p<0.0006
Statistical Significance
p<0.0006
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website