Cited by 89Stress Responses and CortisolHeart Rate Variability and Autonomic ControlTelomeres, Telomerase, and Senescence

Autonomic and adrenocortical reactivity and buccal cell telomere length in kindergarten children

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Kroenke, Candyce H., Epel, Elissa, Adler, Nancy, Bush, Nicole R., Obradović, Jelena, Lin, Jue, Blackburn, Elizabeth, Stamperdahl, Juliet Lise +1 more·2011·Psychosomatic Medicine

Abstract

Objective: To examine associations between autonomic nervous system and adrenocortical reactivity to laboratory stressors and buccal cell telomere length (BTL) in children. Methods: The study sample comprised 78 children, aged 5 to 6 years, from a longitudinal cohort study of kindergarten social hierarchies, biologic responses to adversity, and child health. Buccal cell samples and reactivity measures were collected in the spring of the kindergarten year. BTL was measured by real-time polymerase chain reaction, as the telomere-to-single-copy gene ratio. Parents provided demographic information; parents and teachers reported children's internalizing and externalizing behavior problems. Components of children's autonomic (heart rate, respiratory sinus arrhythmia [RSA], and preejection period [PEP]) and adrenocortical (salivary cortisol) responses were monitored during standardized laboratory challenges. We examined relationships between reactivity, internalizing and externalizing behaviors, and BTL, adjusted for age, race, and sex. Results: Heart rate and cortisol reactivity were inversely related to BTL, PEP was positively related to BTL, and RSA was unrelated to BTL. Internalizing behaviors were also inversely related to BTL (standardized β = −0.33, p =.004). Split at the median of reactivity parameters, children with high sympathetic activation (decreasing PEP), and parasympathetic withdrawal (decreasing RSA) did not differ with regard to BTL. However, children with both this profile and high cortisol reactivity (n = 12) had significantly shorter BTL (0.80 versus 1.00; χ2 = 7.6, p =.006), compared with other children. Conclusions: The combination of autonomic and adrenocortical reactivity was associated with shorter BTL in children. These data suggest that psychophysiological processes may influence, and that BTL may be a useful marker of, early biologic aging. DNA = deoxyribonucleic acid; BTL = buccal cell telomere length; ANS = autonomic nervous system; HPA = hypothalamic-pituitary-adrenal; HR = heart rate; SNS = sympathetic nervous system; PNS = parasympathetic nervous system; PEP = preejection period; RSA = respiratory sinus arrhythmia; PAWS = Peers and Wellness Study; BMI = body mass index; T/S = telomere repeat copy number to single-copy gene copy number; ECG = electrocardiograph; SES = socioeconomic status.

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  • Studies are more, but not always, consistent in showing inverse relationships between LTL and dynamic aspects of cortisol secretion as opposed to basal, resting or even circadian cortisol levels.

    “Studies are more, but not always, consistent in showing inverse relationships between LTL and dynamic aspects of cortisol secretion (e.g., waking-associated increases in cortisol or cortisol responses provoked by psychological stress) (Gotlib et al., 2014; Kroenke et al., 2011; Revesz et al., 2013; Tomiyama et al., 2012) as opposed to basal, resting or even circadian cortisol levels.”

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Research works printed but not linked: 2

  1. [35]Gentra Systems I Puregene DNA Purification Kit: DNA purification from 1 buccal brush 2004 vol. 2007 Gentra Systems
  2. [55]Obradovic J Bush NR Stamperdahl J Adler N Boyce WT Biological sensitivity to context: the interactive effects of stress reactivity and family adversity on socioemotional behavior and school readiness Child Development 2009 in press PMC2846098 20331667

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Authors
Kroenke, C. H., Epel, E., Adler, N., Bush, N. R., Obradović, J., Lin, J., Blackburn, E., Stamperdahl, J. L., & Boyce, W. T.
Affiliations
Kaiser Permanente (US)
Corresponding author
Kroenke, Candyce H.
Venue
Psychosomatic Medicine
Published
2011-09
Volume
73
Issue
7
Pages
533-540
ISSN
0033-3174 (ISSN-L)
OpenAlex
W2002796604
Cited by
89
References
71
Citations by year
2026: 1 · 2025: 2 · 2024: 4 · 2023: 4 · 2022: 4 · 2021: 2 · 2020: 5 · 2019: 9 · 2018: 5 · 2017: 14 · 2016: 8 · 2015: 8 · 2014: 10 · 2013: 6 · 2012: 6
FWCI
2.86
Type
journal article
Language
en
Open access
Locations
  • Psychosomatic Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Mental Health (MH 070950-02, R21MH070950)
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Rate Variability and Autonomic Control
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
Keywords
telomere length
MeSH terms
Adrenal Cortex, Aging, Anxiety, Arrhythmia, Sinus, Autonomic Nervous System, Child, Child, Preschool, Depression, Female, Heart Rate, Humans, Hydrocortisone, Male, Mouth Mucosa, Saliva, Stress, Psychological, Telomere, Real-Time Polymerase Chain Reaction

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