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Related Experiment Video

Updated: Mar 12, 2026

Telomere Length and Telomerase Activity; A Yin and Yang of Cell Senescence
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Genetic and Environmental Effects on Telomere Length and Lung Function: A Twin Study.

Elina Sillanpää1, Sarianna Sipilä1, Timo Törmäkangas1

  • 1Gerontology Research Center and Department of Health Sciences, University of Jyväskylä, Finland.

The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
|November 19, 2016
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Summary

Leukocyte telomere length (LTL) and lung function are genetically determined. While associations were weak, shared genetic factors may influence LTL and FEV1 in larger populations.

Keywords:
Genetic modelingSpirometryTelomeres

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Area of Science:

  • Genetics
  • Pulmonology
  • Aging Research

Background:

  • Leukocyte telomere length (LTL) is a biomarker of cellular aging.
  • Lung function naturally declines with age.
  • Understanding the interplay between LTL and lung function is crucial for aging research.

Purpose of the Study:

  • To estimate the heritability of LTL and lung function.
  • To investigate shared genetic or environmental influences on LTL and lung function.

Main Methods:

  • Study included 386 Finnish twin sisters (mean age 68.4 years).
  • LTL measured via qPCR from peripheral blood DNA.
  • Lung function (FEV1, FVC, PEF) assessed by spirometry.
  • Genetic modeling performed using MPlus software.

Main Results:

  • Heritability estimates for LTL were 62% genetic and 38% environmental.
  • Lung function measures (FEV1, FVC, PEF) showed 65%-67% heritability.
  • Modest phenotypic correlation (r=0.104) observed between LTL and FEV1.
  • Genetic correlation between LTL and FEV1 was 0.18; environmental correlation was -0.10.

Conclusions:

  • Both LTL and lung function are significantly heritable.
  • Observed associations between LTL and lung function were weak.
  • Preliminary evidence suggests potential shared genetic factors influencing LTL and FEV1, warranting larger-scale studies.