Monocyte-derived dendritic cells in bipolar disorder

EM Knijff*, C Ruwhof, HJ de Wit, RW Kupka, R Vonk, GW Akkerhuis, WA Nolen, HA Drexhage

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

30 Citations (Scopus)

Abstract

Background: Dendritic cells (DC) are key regulators of the immune system, which is compromised in patients with bipolar disorder. We sought to study monocyte-derived DC in bipolar disorder.

Methods: Monocytes purified from blood collected from DSM-IV bipolar disorder outpatients (n = 53, 12 without lithium treatment) and healthy, individuals (n = 34) were differentiated into DC via standard granulocyte-macrophage colony-stimulating factor/ interleukin-4 culture (with/without 1, 5, and 10 mmol/L lithium chloride). The DC were analyzed for DC-specific and functional markers and for T-cell stimulatory potency.

Results: Monocytes of bipolar patients showed a mild hampering in their differentiation, into fully, active DC, showing a weak residual expression of the monocyte marker CD14 and a relatively low potency, to stimulate autologous T cells. Lithium treatment abolished this mild defect. and monocyte-derived DC of treated bipolar patients showed signs of activation (i.e., an up-regulated potency to stimulate autologous T cells and a higher expression of the DC-specific marker CD1a). This activated phenotype contrasted with the suppressed phenotype of monocyte-derived DC exposed to lithium in vitro (10 mmol/L) during culture.

Conclusions: Dendritic cells show mild aberrancies in bipolar disorder that are fully restored to even activation after in vivo lithium treatment.

Original languageEnglish
Pages (from-to)317-326
Number of pages10
JournalBiological Psychiatry
Volume59
Issue number4
DOIs
Publication statusPublished - 15-Feb-2006

Keywords

  • bipolar disorder
  • monocytes
  • dendritic cells
  • lithium
  • ACUTE-PHASE PROTEINS
  • DIABETIC NOD MICE
  • CYTOKINE PRODUCTION
  • IMMUNE PARAMETERS
  • LITHIUM TREATMENT
  • MAJOR DEPRESSION
  • INTERFERON-GAMMA
  • IN-VITRO
  • MANIA
  • MICROGLIA

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