Shorter telomere length is associated with greater decrease in ankle-brachial index in elderly Chinese women but not...

Area of Science:

• Gerontology
• Cardiovascular Disease
• Molecular Biology

Background:

• Telomere shortening is implicated in atherosclerosis and cardiovascular risk.
• Understanding telomere dynamics in aging populations is crucial for cardiovascular health.
• Previous studies suggest a link between telomere length (TL) and atherosclerosis, but sex-specific differences require further investigation.

Purpose of the Study:

• To investigate the association between telomere length (TL) and ankle-brachial index (ABI) changes over five years.
• To explore potential sex differences in the relationship between TL and atherosclerosis markers in older Chinese adults.

Main Methods:

• Quantitative polymerase chain reaction (PCR) was used to measure telomere length in 976 men and 1030 women aged 65+.
• Ankle-brachial index (ABI) was measured using Doppler ultrasound over a five-year period.
• Analysis of covariance adjusted for confounders to examine the relationship between TL quartiles and ABI values/changes.

Main Results:

• Women exhibited longer telomere length (TL) and lower ankle-brachial index (ABI) compared to men.
• A significant inverse association was found between TL and the percentage decline in ABI in women after adjusting for confounders.
• No significant association between TL and ABI change was observed in men.

Conclusions:

• The findings suggest that telomere length is associated with markers of atherosclerosis in older Chinese women.
• The study highlights a potential sex-specific relationship between telomere dynamics and cardiovascular health in aging populations.
• Further research is warranted to elucidate the mechanisms underlying the observed sex differences.