EFFECT OF RADIATION ON AGING PROCESSES AND TELOMERE LENGTH

Area of Science:

• Biogerontology
• Radiation Biology
• Molecular Biology

Background:

• Telomeres, protective chromosome caps, shorten with age, acting as a biological clock.
• Telomere shortening is a key indicator of cellular aging and senescence.
• Radiation exposure can induce oxidative stress, damaging telomeres.

Purpose of the Study:

• To review the impact of ionizing and nonionizing radiation on telomere length.
• To explore the role of radiation-induced oxidative stress in cellular aging.
• To discuss the implications for maintaining healthy aging.

Main Methods:

• Literature review of studies on radiation, oxidative stress, and telomere dynamics.
• Analysis of mechanisms linking radiation exposure to telomere attrition.
• Synthesis of findings on antioxidant responses to radiation.

Main Results:

• Both ionizing and nonionizing radiation can damage telomeres through free radical generation.
• Low radiation doses may activate antioxidant systems, but high doses or prolonged exposure accelerate aging.
• Oxidative stress exacerbates telomere shortening, contributing to cellular aging.

Conclusions:

• Radiation exposure significantly impacts telomere length and cellular aging.
• Understanding these mechanisms is vital for health and mitigating aging effects.
• Strategies to protect telomeres may be important in managing radiation exposure.