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Telomere Length and Symptoms of Attention Deficit and Hyperactivity Disorder in Children at 6-12 Years
Irene Campos-Sánchez1, Eva María Navarrete-Muñoz1,2, Dries S Martens3
1Occupational Therapy Research Group (InTeO, Investigación en Terapia Ocupacional), Department of Surgery and Pathology, Miguel Hernandez University, Alicante, Spain.
Insights
Longer telomere length (TL) may reduce hyperactivity symptoms in children. While not consistently found across all studies, this association warrants further investigation in pediatric attention deficit hyperactivity disorder (ADHD).
Area of Science:
- Pediatric Health
- Genetics
- Neurodevelopmental Disorders
Background:
- Attention deficit hyperactivity disorder (ADHD) is a common neurodevelopmental disorder in children.
- Telomere length (TL), a marker of cellular aging, has been investigated for its potential role in various health conditions.
- Understanding factors associated with ADHD symptoms is crucial for early intervention and management.
Purpose of the Study:
- To investigate the relationship between telomere length (TL) and attention deficit hyperactivity disorder (ADHD) symptoms in children aged 6-12 years.
- To determine if TL is a potential biomarker for ADHD symptom severity or risk.
- To explore potential differences in this association across different population cohorts.
Main Methods:
- Utilized data from 1,759 children across the HELIX and INMA projects.
- Measured telomere length (TL) from blood samples using a Polymerase Chain Reaction (PCR) protocol.
- Assessed ADHD symptoms via parent-reported Conners' Parent Rating Scale-Revised: Short Form, analyzed with negative binomial regression models.
Main Results:
- Overall, no significant association was found between telomere length (TL) and general ADHD symptoms across all participants.
- A significant inverse association was observed in the HELIX cohort: longer TL correlated with a reduced risk of hyperactivity symptoms (IRR=0.93, p=0.022).
- This specific finding suggests a potential protective role of longer telomeres against hyperactivity in certain pediatric populations.
Conclusions:
- The study did not establish a consistent link between telomere length (TL) and ADHD symptoms universally.
- However, a notable association emerged within the HELIX cohort, indicating longer TL may be linked to lower hyperactivity risk.
- Further research is recommended to elucidate the complex interplay between TL and ADHD, particularly hyperactivity, and to validate these findings in diverse cohorts.
Objective:
To explore the association between telomere length (TL) and attention deficit hyperactivity disorder (ADHD) symptoms in children at 6-12 years.
Method:
Data from 1,759 children belonging to the HELIX project cohorts and the Asturias, Gipuzkoa and Valencia cohorts of INMA project were included. TL was determined by blood sample using a PCR protocol. ADHD symptoms were described by parents using the Conners' Parent Rating Scale-Revised: Short Form. Multiple negative binomial regression models adjusted for potential confounders were used to estimate associations.
Results:
Overall estimates showed no associations between TL and ADHD symptoms. However, we observed that a longer TL was significantly associated with a lower risk of presenting hyperactivity symptoms in children belonging to the HELIX project (IRR = 0.93, 95% CI [0.87, 0.99]; p = .022).
Conclusion:
While our study did not find a consistent association between TL and ADHD symptoms across all cohorts, the significant association found within the HELIX cohort suggests that longer TL may be linked to a lower risk of hyperactivity symptoms. Further research is needed to explore this association in more detail.
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