Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Review
, 107 (4), 355-64

Mitochondrial DNA and Aging

Affiliations
Review

Mitochondrial DNA and Aging

Mikhail F Alexeyev et al. Clin Sci (Lond).

Abstract

Among the numerous theories that explain the process of aging, the mitochondrial theory of aging has received the most attention. This theory states that electrons leaking from the ETC (electron transfer chain) reduce molecular oxygen to form O2*- (superoxide anion radicals). O2*-, through both enzymic and non-enzymic reactions, can cause the generation of other ROS (reactive oxygen species). The ensuing state of oxidative stress results in damage to ETC components and mtDNA (mitochondrial DNA), thus increasing further the production of ROS. Ultimately, this 'vicious cycle' leads to a physiological decline in function, or aging. This review focuses on recent developments in aging research related to the role played by mtDNA. Both supportive and contradictory evidence is discussed.

Similar articles

See all similar articles

Cited by 37 articles

See all "Cited by" articles

Substances

LinkOut - more resources

Feedback