Clin Psychopharmacol Neurosci.  2013 Dec;11(3):144-151.

Effects of Antipsychotics on the Inflammatory Response System of Patients with Schizophrenia in Peripheral Blood Mononuclear Cell Cultures

Affiliations
  • 1Department of Pharmacy, North South University, Dhaka, Bangladesh. alamin@northsouth.edu
  • 2Department of Pharmacy, University of Chittagong, Chittagong, Bangladesh.

Abstract

OBJECTIVE: We investigated the effects of antipsychotics on immune-challenged peripheral blood mononuclear cell (PBMC) cultures.
METHODS
Blood samples were collected from twelve patients with first-episode schizophrenia. The PBMCs were separated and cultures were prepared and stimulated with lipopolysaccharide (LPS) or polyinosinic:polycytidylic acid (poly[I:C]), and then separately treated with a typical antipsychotic (haloperidol) or atypical antipsychotic (clozapine, quetiapine, or risperidone). Pro-inflammatory (interferon gamma [IFN-gamma]) and anti-inflammatory (interleukin [IL]-4 and IL-10) cytokine levels were measured in the LPS- or poly(I:C)-stimulated PBMC cultures treated with antipsychotics.
RESULTS
Haloperidol and quetiapine significantly increased the IL-4 levels (p<0.05) in LPS-stimulated PBMC cultures, while clozapine and quetiapine significantly enhanced the IL-4 levels (p<0.05) in poly(I:C)-stimulated PBMC cultures. Only treatment with haloperidol resulted in a significant increase in IL-10 production (p<0.05) in LPS-stimulated PBMC cultures, whereas clozapine, quetiapine, and risperidone treatment significantly increased IL-10 production (p<0.05) in poly(I:C)-stimulated PBMC cultures. All of the antipsychotics reduced the IFN-gamma level significantly (p<0.05) in LPS- and poly(I:C)-stimulated PBMC cultures.
CONCLUSION
Antipsychotic treatment altered immune function by raising the levels of anti-inflammatory cytokines (IL-4 and IL-10) and suppressing the levels of pro-inflammatory cytokines (IFN-gamma).

Keyword

Schizophrenia; Cytokines; Antipsychotic; Lipopolysaccharides
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