DNA damage and senescence in the aging and Alzheimer’s disease cortex are not uniformly distributed.
Abstract
Alzheimer’s disease (AD) has a typical age of onset exceeding 65 years. The age‐dependency of the condition led us to track the appearance of DNA damage in the frontal cortex of individuals who died with a diagnosis of AD. The focus on DNA damage was motivated by evidence that increasing levels of irreparable DNA damage are a major driver of the aging process. This connection between aging and genomic integrity is compelling because DNA damage has also been identified as a possible cause of cellular senescence. The number of senescent cells increase with ages, and their senescence‐associated secreted products likely contribute to age‐related illnesses.
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Research summary
The paper investigates DNA damage and cellular senescence in the context of Alzheimer's disease, which is indeed related to aging. However, it primarily focuses on the correlation between DNA damage and the symptoms of Alzheimer's rather than addressing the root causes of aging or proposing solutions for lifespan extension. While it contributes to understanding the mechanisms involved in age-related diseases, its impact is limited as it does not present significant advancements or breakthroughs in longevity research.
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