Depressive symptoms are associated with leukocyte telomere length in American Indians

Findings from the Strong Heart Family Study

Qi Zhao, Yun Zhu, Fawn Yeh, Jue Lin, Elisa T. Lee, Shelley A. Cole, Darren Calhoun, Jinying Zhao

Research output: Contribution to journalArticle

Abstract

Patients with depression have an increased risk for many aging-related disorders, but the biological mechanisms underlying this link remain to be determined. Here we examined the association between depressive symptoms and leukocyte telomere length (LTL), a marker of biological aging, among 2,175 American Indians participating in the Strong Heart Family Study. Depressive symptoms were assessed by the Center for Epidemiologic Studies of Depression Scale (CES-D), which was categorized into four levels: none (< 10), mild (10- 15), moderate (16 -24), and severe (> 24). LTL (T/S ratio) was quantified by qPCR. The association between depressive symptoms and LTL was examined by multivariate generalized estimating equation models, adjusting for sociodemographic factors, lifestyle factors, and chronic conditions. Results showed that individuals with a higher level of depressive symptoms had shorter LTL. Specifically, LTL in participants reporting none, mild, moderate, and severe depressive symptoms were 1.000, 0.999, 0.988, and 0.966, respectively (P for trend = 0.0278). Moreover, gender appears to modulate the effect of reported depressive symptoms that fall in the severe range (CES-D > 24) on LTL (P for interaction = 0.0346). Our results suggest that depressive symptoms may accelerate biological aging through pathways beyond traditional risk factors in American Indians.

Original languageEnglish (US)
Pages (from-to)2961-2970
Number of pages10
JournalAging
Volume8
Issue number11
DOIs
StatePublished - Jan 1 2016

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North American Indians
Telomere
Leukocytes
Depression
Epidemiologic Studies
Life Style

All Science Journal Classification (ASJC) codes

  • Aging
  • Cell Biology

Cite this

Depressive symptoms are associated with leukocyte telomere length in American Indians : Findings from the Strong Heart Family Study. / Zhao, Qi; Zhu, Yun; Yeh, Fawn; Lin, Jue; Lee, Elisa T.; Cole, Shelley A.; Calhoun, Darren; Zhao, Jinying.

In: Aging, Vol. 8, No. 11, 01.01.2016, p. 2961-2970.

Research output: Contribution to journalArticle

Zhao, Qi ; Zhu, Yun ; Yeh, Fawn ; Lin, Jue ; Lee, Elisa T. ; Cole, Shelley A. ; Calhoun, Darren ; Zhao, Jinying. / Depressive symptoms are associated with leukocyte telomere length in American Indians : Findings from the Strong Heart Family Study. In: Aging. 2016 ; Vol. 8, No. 11. pp. 2961-2970.
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