Cited by 33Bipolar Disorder and TreatmentTryptophan and brain disordersTreatment of Major Depression

White blood cell count correlates with mood symptom severity and specific mood symptoms in bipolar disorder

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Köhler, Ole, Sylvia, Louisa G, Bowden, Charles L, Calabrese, Joseph R, Thase, Michael, Shelton, Richard C, McInnis, Melvin, Tohen, Mauricio +8 more·2017·Australian & New Zealand Journal of Psychiatry

Abstract

Objective: Immune alterations may play a role in bipolar disorder etiology; however, the relationship between overall immune system functioning and mood symptom severity is unknown. Methods: The two comparative effectiveness trials, the Clinical and Health Outcomes Initiatives in Comparative Effectiveness for Bipolar Disorder Study (Bipolar CHOICE) and the Lithium Treatment Moderate-Dose Use Study (LiTMUS), were similar trials among patients with bipolar disorder. At study entry, white blood cell count and bipolar mood symptom severity (via Montgomery-Aasberg Depression Rating Scale and Bipolar Inventory of Symptoms Scale) were assessed. We performed analysis of variance and linear regression analyses to investigate relationships between deviations from median white blood cell and multinomial regression analysis between higher and lower white blood cell levels. All analyses were adjusted for age, gender, body mass index, smoking, diabetes, hypertension and hyperlipidemia. Results: Among 482 Bipolar CHOICE participants, for each 1.0 × 10 9 /L white blood cell deviation, the overall Bipolar Inventory of Symptoms Scale severity increased significantly among men (coefficient = 2.13; 95% confidence interval = [0.46, −3.79]; p = 0.013), but not among women (coefficient = 0.87; 95% confidence interval = [−0.87, −2.61]; p = 0.33). Interaction analyses showed a trend toward greater Bipolar Inventory of Symptoms Scale symptom severity among men (coefficient = 1.51; 95% confidence interval = [−0.81, −3.82]; p = 0.2). Among 283 LiTMUS participants, higher deviation from the median white blood cell showed a trend toward higher Montgomery-Aasberg Depression Rating Scale scores among men (coefficient = 1.33; 95% confidence interval = [−0.22, −2.89]; p = 0.09), but not among women (coefficient = 0.34; 95% confidence interval = [−0.64, −1.32]; p = 0.50). When combining LiTMUS and Bipolar CHOICE, Montgomery-Aasberg Depression Rating Scale scores increased significantly among men (coefficient = 1.09; 95% confidence interval = [0.31, −1.87]; p = 0.006) for each 1.0 × 10 9 /L white blood cell deviation, whereas we found a weak association among women (coefficient = 0.55; 95% confidence interval = [−0.20, −1.29]; p = 0.14). Lower and higher white blood cell levels correlated with greater symptom severity and specific symptoms, varying according to gender. Conclusion: Deviations in an overall immune system marker, even within the normal white blood cell range, correlated with mood symptom severity in bipolar disorder, mostly among males. Studies are warranted investigating whether white blood cell count may predict response to mood-stabilizing treatment.

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Authors
Köhler, O., Sylvia, L. G., Bowden, C. L., Calabrese, J. R., Thase, M., Shelton, R. C., McInnis, M., Tohen, M., Kocsis, J. H., Ketter, T. A., Friedman, E. S., Deckersbach, T., Ostacher, M. J., Iosifescu, D. V., McElroy, S., & Nierenberg, A. A.
Affiliations
  • Psychosis Research Unit, Aarhus University Hospital, Risskov, Denmark
  • Harvard University (US)
  • The University of Texas at San Antonio Health Science Center (US)
  • Case Western Reserve University (US)
  • University of Pennsylvania (US)
  • University of Alabama at Birmingham (US)
  • University of Michigan (US)
  • University of New Mexico (US)
  • Weill Cornell Medicine (US)
  • Stanford Medicine (US)
  • University of Pittsburgh Medical Center (US)
  • VA Palo Alto Health Care System (US)
  • Icahn School of Medicine at Mount Sinai (US)
  • Lindner Center of HOPE (US)
Venue
Australian & New Zealand Journal of Psychiatry
Published
2016-07-11
Volume
51
Issue
4
Pages
355-365
ISSN
  • 0004-8674 (ISSN-L)
  • 1440-1614
OpenAlex
W2343312844
Cited by
33
References
43
Citations by year
2026: 2 · 2025: 3 · 2024: 4 · 2023: 1 · 2022: 4 · 2021: 4 · 2020: 2 · 2019: 3 · 2018: 5 · 2017: 5
FWCI
3.85
Type
journal article
Language
en
Open access
Locations
  • Australian & New Zealand Journal of Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • Scopus (Elsevier) (submittedVersion)
Funders
  • Agency for Healthcare Research and Quality (1R01HS019371, 1r01hs019371-01)
  • National Institute of Mental Health (NO1MH80001)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Bipolar Disorder and Treatment
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
Keywords
bipolar disorder, white blood cell count, immune system alterations, sex differences, depression, lithium therapy, LITMUS, mood symptoms, mood stabilizers, comparative effectiveness trials
MeSH terms
Adolescent, Adult, Affect, Bipolar Disorder, Female, Humans, Immune System, Leukocyte Count, Lithium, Male, Middle Aged, Psychiatric Status Rating Scales, Severity of Illness Index, Sex Characteristics, United States, Linear Models, Logistic Models, Young Adult

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