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Oxytocin effects in schizophrenia: Reconciling mixed findings and moving forward

Ellen R Bradley1, Joshua D Woolley1

  • 1Department of Psychiatry, University of California, San Francisco, 401 Parnassus Avenue, San Francisco, CA 94143, United States.

Neuroscience and Biobehavioral Reviews
|May 17, 2017
PubMed

Insights

Oxytocin, a neuropeptide, shows mixed results as a schizophrenia treatment. Further research is needed to clarify its potential for improving negative and cognitive symptoms and functional impairment in schizophrenia patients.

Area of Science:

  • Neuroscience
  • Psychiatry
  • Pharmacology

Background:

  • Schizophrenia is a severe mental illness with inadequate treatments for negative and cognitive symptoms.
  • Oxytocin, a neuropeptide modulating social behavior, is being explored as a novel therapeutic for schizophrenia.
  • Existing research on oxytocin for schizophrenia yields mixed results, creating controversy regarding its efficacy.

Purpose of the Study:

  • To review and interpret the current literature on oxytocin's effects in schizophrenia.
  • To identify reasons for heterogeneity in randomized clinical trials (RCTs) of oxytocin in schizophrenia.
  • To propose future research directions for oxytocin as a schizophrenia therapy.

Main Methods:

  • Systematic review of existing studies on oxytocin and schizophrenia.
  • Analysis of factors contributing to variability in RCT outcomes.
  • Examination of oxytocin's impact on specific schizophrenia deficits.

Main Results:

  • Heterogeneity in RCTs complicates the interpretation of oxytocin's efficacy.
  • The human oxytocin system is complex and may influence treatment outcomes.
  • Evidence suggests potential, but inconsistent, effects of oxytocin on schizophrenia symptoms.

Conclusions:

  • Further investigation is required to understand oxytocin's role in schizophrenia treatment.
  • Future studies should employ objective measures to assess functional improvements.
  • Clarifying oxytocin's therapeutic potential for schizophrenia requires a focused research agenda.
Keywords:
Negative symptomsOxytocinSchizophreniaSocial cognition

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