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Association between telomere length and cognitive ability in a community-based sample.

Rishika Kaja1, Stephanie M Reyes1, Heidi C Rossetti1

  • 1Department of Psychiatry, University of Texas Southwestern Medical Center of Dallas, Dallas, TX, USA.

Neurobiology of Aging
|December 14, 2018
PubMed
Summary

Telomere length, a potential biomarker for cognitive aging, showed no significant association with general cognitive functioning in a large study. These findings align with existing literature, suggesting telomere length may not be a reliable indicator of cognitive health.

Keywords:
Cellular biomarkerCognitive abilityCognitive agingCommunity-based sampleTelomere

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Area of Science:

  • Gerontology and Cognitive Neuroscience
  • Biomarkers of Aging

Background:

  • Telomere length is hypothesized as a biomarker for cognitive aging.
  • Existing literature presents conflicting evidence regarding this association.
  • A need exists to clarify the relationship between telomere length and cognitive function.

Purpose of the Study:

  • To investigate the association between telomere length and cognitive ability.
  • To utilize data from the Dallas Heart Study (N=2606) for robust analysis.
  • To assess cognitive function using the Montreal Cognitive Assessment (MoCA).

Main Methods:

  • Retrospective analysis of data from the Dallas Heart Study.
  • Statistical assessment of the correlation between telomere length and MoCA scores.
  • Inclusion of 2606 participants to ensure adequate statistical power.

Main Results:

  • No statistically significant relationship was found between telomere length and general cognitive functioning (β = 0.016, SE = 0.31, p = 0.407).
  • The findings are consistent with previous studies reporting null associations.
  • The data do not support telomere length as a predictor of cognitive ability in this cohort.

Conclusions:

  • Telomere length does not appear to be a significant biomarker for general cognitive functioning in the studied population.
  • This study replicates and reinforces previous negative findings in the literature.
  • Further research may be needed to explore potential indirect or specific cognitive domain associations.