Neighborhood disorder and telomeres: Connecting children’s exposure to community level stress and cellular response

Details

• Alternative Title:
  Soc Sci Med
• Personal Author:
  Theall, Katherine P. ; Brett, Zoë H. ; Shirtcliff, Elizabeth A. ; Dunn, Erin C. ; Drury, Stacy S.
• Description:
  Our objective was to explore the utility of salivary telomere length (sTL) as an early indicator of neighborhood-level social environmental risk during child development. We therefore tested the hypothesis that sTL would be associated with markers of social stress exposure in children. Children age 4-14 from 87 neighborhoods were recruited through five urban schools in New Orleans, Louisiana, U.S. Data were collected at the level of the child, family/household, and neighborhood. DNA was obtained from saliva using commercially available kits and sTL was determined for 104 children using quantitative PCR. Analysis was performed on 99 children who had complete data including sTL, social environmental stress, and additional covariates. The mean sTL value was 7.4 T/S (telomere signal/single-copy signal) ratio units (±2.4, range = 2.5-18.0), and 4.7% of the variance in sTL was attributed to differences across neighborhoods. Children living in neighborhoods characterized by high disorder had an sTL value 3.2 units lower than children not living in high disordered environments (p < 0.05) and their odds of having low relative sTL (defined as <1 standard deviation below standardized Z-score mean) values was 3.43 times that of children not living in high disorder environments (adjusted OR = 3.43, 95% CI = 1.22, 9.62). Our findings are consistent with previous studies in adults demonstrating a strong link between psychosocial stress and sTL obtained from peripheral blood, consistent with previous studies in youth demonstrating an association between early life stress and sTL obtained from buccal cell DNA and offer increased support for the hypothesis that sTL represents a non-invasive biological indicator of psychosocial stress exposure (i.e., neighborhood disorder) able to reflect differences in stress exposure levels even in young children.
• Subjects:
  Adolescent Child Child, Preschool Child Development Female Humans Male Residence Characteristics Risk Factors Saliva Social Environment Stress, Psychological Telomere Urban Population

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• Source:
  Soc Sci Med. 2013; 85:50-58.
• Pubmed ID:
  23540366
• Pubmed Central ID:
  PMC3615150
• Document Type:
  Journal Article
• Funding:
  1K01SH000002/SH/NCHS CDC HHS/United States ; 1R01ES020447-01/ES/NIEHS NIH HHS/United States ; 1R01MH091363/MH/NIMH NIH HHS/United States ; K01-MH077687/MH/NIMH NIH HHS/United States ; R01 ES020447/ES/NIEHS NIH HHS/United States ; R21 MH094688/MH/NIMH NIH HHS/United States ; R21 MH094688-01/MH/NIMH NIH HHS/United States
• Place as Subject:
  New Orleans, LA
• Volume:
  85
• Collection(s):
  CDC Public Access
• Main Document Checksum:
  urn:sha256:d655925125eb3b465a52f3ada971ff8e99eca44e9b830a4a249f0d31a0f4860f
• Download URL:
  https://stacks.cdc.gov/view/cdc/29636/cdc_29636_DS1.pdf
• File Type:
  [PDF - 685.69 KB ]