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Cellular immunity in schizophrenic patients before and during neuroleptic treatment

N Müller1, M Ackenheil, E Hofschuster

  • 1Department of Neurochemistry, University of Munich, Germany.

Psychiatry Research
|May 1, 1991
PubMed

Insights

Schizophrenia patients show altered cellular immunity, with increased lymphocyte responses and changes in T-cell populations. These immunological differences persist even without neuroleptic treatment, suggesting a role in schizophrenia.

Area of Science:

  • Immunology
  • Psychiatry
  • Cellular Biology

Background:

  • The link between immune system dysfunction and schizophrenia has been long suspected.
  • Previous research suggests potential immunological alterations in schizophrenia patients.

Purpose of the Study:

  • To investigate cellular immunity parameters in acute-stage schizophrenia patients before and during neuroleptic treatment.
  • To compare immune responses in patients versus healthy controls.

Main Methods:

  • Studied 55 acute-stage schizophrenia patients and 51 healthy controls.
  • Assessed lymphocyte responses to mitogens (PWM, PHA) and antigens.
  • Quantified CD3+, CD4+, and CD8+ T-cell counts and suppressor-cell activity.

Main Results:

  • Patients exhibited increased lymphocyte responses to pokeweed mitogen (PWM) and phytohemagglutinin (PHA) both before and during neuroleptic treatment compared to controls.
  • Reduced lymphocyte responses to specific antigens were observed in patients, particularly before treatment with tuberculin and during treatment with various antigens.
  • Elevated CD3+ and CD4+ T-cell counts and reduced suppressor-cell activity were found in patients, independent of neuroleptic medication.

Conclusions:

  • Significant alterations in cellular immunity, including T-cell numbers and function, are present in schizophrenia.
  • These immune system changes are not attributable to neuroleptic treatment, indicating a potential intrinsic role in the pathophysiology of schizophrenia.

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