White blood cell inflammatory markers are associated with depressive symptoms in a longitudinal study of urban adults
White blood cell inflammatory markers are associated with depressive symptoms in a longitudinal study of urban adults
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DOI:
10.1038/tp.2016.180
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发表时间:
2016-09-20
影响因子:
6.8
通讯作者:
Zonderman, A. B.
中科院分区:
文献类型:
--
作者:
Beydoun, M. A.;Beydoun, H. A.;Zonderman, A. B.
Total white blood cell count (TWBCC) and percentage (%) composition of lymphocytes (PL) or neutrophils (PN) are linked to mid-and late-life depression, though sex-specific temporal relationships between those inflammatory markers and depressive symptoms remain unclear. The association between inflammation and depressive symptoms in longitudinal data on ethnically and socioeconomically diverse urban adults was examined with two hypotheses. In hypothesis 1, we examined the relationship between TWBCC, PL and PN with change in level of depressive symptoms from baseline to follow-up, stratifying by sex. In hypothesis 2, we examined reverse causality, by testing the relationship of depressive symptoms with change in TWBCC, PL and PN. Multiple linear mixed-effects regression models were performed to examine both the hypotheses. The sample sizes of participants (n) and repeated observations (n') were: Hypothesis 1 (n = 2009; n' = 3501); Hypothesis 2 (n = 2081; n' = 3560). Among key findings (Hypothesis 1), in women, higher TWBCC was linked to a faster increase in depressive symptom total score (gamma(1112)+/- s.e.: +0.81 +/- 0.28, P = 0.003), with a slower increase over time in the positive affect subdomain coupled with faster increases in depressed affect and somatic complaints. Among women, baseline score on somatic complaints was positively associated with low PN (gamma(01a) = +1.61 +/- 0.48, P