CNS Drugs

, Volume 15, Issue 4, pp 287–310

Oxidative Damage and Schizophrenia

An Overview of the Evidence and Its Therapeutic Implications
  • Jeffrey K. Yao
  • Ravinder D. Reddy
  • Daniel P. van Kammen
Review Article

DOI: 10.2165/00023210-200115040-00004

Cite this article as:
Yao, J.K., Reddy, R.D. & van Kammen, D.P. Mol Diag Ther (2001) 15: 287. doi:10.2165/00023210-200115040-00004


Free radicals are highly reactive chemical species generated during normal metabolic processes, which in excess can lead to membrane damage. Elaborate anti-oxidant defence systems exist to protect against oxidative stress.

There is accumulating evidence of altered antioxidant capacity in schizophrenia. Membrane dysfunction can be secondary to free radical-mediated pathology, and may contribute to specific aspects of schizophrenic symptomatology and complications of its treatment. Specifically, free radical-mediated abnormalities may contribute to the development of a number of clinically significant consequences, including prominent negative symptoms, tardive dyskinesia, neurological ‘soft’ signs and parkinsonian symptoms. Our previous results showing altered membrane dynamics and antioxidant enzyme activities in schizophrenia, and findings from other investigators, are consistent with the notion of free radical-mediated neurotoxicity in schizophrenia. These findings provide a theoretical basis from which the development of novel therapeutic strategies such as fatty acid and antioxidant supplementation can occur in the future.

Copyright information

© Adis International Limited 2001

Authors and Affiliations

  • Jeffrey K. Yao
    • 1
    • 2
  • Ravinder D. Reddy
    • 2
  • Daniel P. van Kammen
    • 3
  1. 1.VA Pittsburgh Healthcare System, Neurochemistry and Psychopharmacology Laboratory (Building 13)PittsburghUSA
  2. 2.Department of Psychiatry, Western Psychiatric Institute & ClinicUniversity of Pittsburgh Medical CenterPittsburghUSA
  3. 3.The Robert Wood Johnson Pharmaceutical Research InstituteRaritanUSA

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