Journal
SCHIZOPHRENIA BULLETIN
Volume 38, Issue 3, Pages 569-578Publisher
OXFORD UNIV PRESS
DOI: 10.1093/schbul/sbq126
Keywords
schizophrenia; treatment response; MR imaging; gray matter; asymmetry
Categories
Funding
- National Alliance for Research on Schizophrenia and Affective Disorders
- National Institute of Mental Health [MH076995, MH060004, MH060374]
- Advanced Center for Intervention and Services Research [MH074543]
- Mental Health Center for Intervention Development and Applied Research [MH080173]
- North Shore-Long Island Jewish Health System Research Institute General Clinical Research Center [M01 RR018535]
- Abbott
- AstraZeneca
- Janssen Pharmaceutica
- Sumitomo
- Pfizer
- Cogtest
- Cypress Bioscience
- Vanda
- Dainipon Sumitomo
- Johnson Johnson
- Merck
- Roche
- Bristol-Myers Squibb
- Janssen
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Identifying neurobiological predictors of response to antipsychotics in patients with schizophrenia is a critical goal of translational psychiatry. Few studies, however, have investigated the relationship between indices of brain structure and treatment response in the context of a controlled clinical trial. In this study, we sought to identify magnetic resonance (MR) imaging measures of the brain that predict treatment response in patients experiencing a first-episode of schizophrenia. Structural MR imaging scans were acquired in 39 patients experiencing a first-episode of schizophrenia with minimal or no prior exposure to antipsychotics participating in a double-blind 16-week clinical trial comparing the efficacy of risperidone vs olanzapine. Twenty-five patients were classified as responders by meeting operationally defined treatment response criteria on 2 consecutive study visits. Fourteen patients never responded to antipsychotic medication at any point during the clinical trial. MR imaging scans were also acquired in 45 age- and sex-matched healthy volunteers. Cortical pattern matching methods were used to compare cortical thickness and asymmetry measures among groups. Statistical mapping results, confirmed by permutation testing, indicated that responders had greater cortical thickness in occipital regions and greater frontal cortical asymmetry compared with nonresponders. Moreover, among responders, greater thickness in temporal regions was associated with less time to respond. Our findings are consistent with the hypothesis that plasticity and cortical thickness may be more preserved in responders and that MR imaging may assist in the prediction of antipsychotic drug response in patients experiencing a first-episode of schizophrenia.
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