Telomere length as a biomarker for adiposity changes after a multidisciplinary intervention in overweight/obese adolescents: the EVASYON study

PLoS One. 2014 Feb 24;9(2):e89828. doi: 10.1371/journal.pone.0089828. eCollection 2014.

Abstract

Context: Telomeres are biomarkers of biological aging. Shorter telomeres have been associated with increased adiposity in adults. However, this relationship remains unclear in children and adolescents.

Objective: To evaluate the association between telomere length (TL) and adiposity markers in overweight/obese adolescents after an intensive program. We hypothesize that greater TL at baseline would predict a better response to a weight loss treatment.

Design setting patients and intervention: The EVASYON is a multidisciplinary treatment program for adolescents with overweight and obesity that is aimed at applying the intervention to all possibly involved areas of the individual, such as dietary habits, physical activity and cognitive and psychological profiles. Seventy-four participants (36 males, 38 females, 12-16 yr) were enrolled in the intervention program: 2 months of an energy-restricted diet and a follow-up period (6 months).

Main outcome: TL was measured by quantitative real-time polymerase chain reaction at baseline and after 2 months; meanwhile, anthropometric variables were also assessed after 6 months of follow-up.

Results: TL lengthened in participants during the intensive period (+1.9±1.0, p<0.001) being greater in overweight/obese adolescents with the shortest telomeres at baseline (r = -0.962, p<0.001). Multivariable linear regression analysis showed that higher baseline TL significantly predicted a higher decrease in body weight (B = -1.53, p = 0.005; B = -2.25, p = 0.047) and in standard deviation score for body mass index (BMI-SDS) (B = -0.22, p = 0.010; B = -0.47, p = 0.005) after the intensive and extensive period treatment respectively, in boys.

Conclusion: Our study shows that a weight loss intervention is accompanied by a significant increase in TL in overweight/obese adolescents. Moreover, we suggest that initial longer TL could be a potential predictor for a better weight loss response.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adiposity / genetics*
  • Adiposity / physiology
  • Adolescent
  • Anthropometry
  • Biomarkers / chemistry*
  • DNA Primers / genetics
  • Diet, Reducing / methods
  • Female
  • Humans
  • Linear Models
  • Male
  • Obesity / genetics*
  • Obesity / therapy
  • Overweight / genetics*
  • Overweight / therapy
  • Real-Time Polymerase Chain Reaction
  • Telomere / genetics*
  • Weight Reduction Programs*

Substances

  • Biomarkers
  • DNA Primers

Grant support

Research relating to this work was funded by grants from the Health Research Fund from the Carlos III Health Institute from Ministry of Health and Consumption, Fondo de Investigación Sanitaria (FIS; PI051579, PI051080) for the EVASYON project; Línea Especial, Nutrición y Obesidad (University of Navarra); Spanish Ministry of Science and Innovation (MICINN) [SAF2010-20367]; Carlos III Health Institute [Centro de Investigación Biomédica en Red (CIBER) project, CB06/03/1017], and RETICS network. The scholarship to S. García-Calzón from the FPU ‘Formación de Profesorado Universitario’ from the Spanish Ministry is fully acknowledged. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.