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Changes in cortical volume with olanzapine in chronic schizophrenia
1Department of Psychiatry, Hospital Clínico Universitario, Salamanca, Spain. vmolina@usal.es
Pharmacopsychiatry
|August 19, 2007
Summary
Schizophrenia patients on olanzapine showed greater cortical gray matter loss in frontal and parietal regions over three years compared to healthy controls. This suggests olanzapine may impact brain volume similarly to older antipsychotic medications.
Area of Science:
- Neuroscience
- Psychiatry
- Radiology
Background:
- Atypical antipsychotics may differentially affect cortical volume compared to traditional antipsychotics.
- Investigating olanzapine's effects on gray matter deficits in schizophrenia is crucial.
Purpose of the Study:
- To evaluate changes in cortical gray matter volume in schizophrenic patients treated with olanzapine versus healthy controls over three years.
- To compare the longitudinal volumetric changes between patient and control groups.
Main Methods:
- Magnetic resonance imaging (MRI) was used to assess gray matter volume.
- Volumetric quantification was performed using the Talairach atlas.
- Longitudinal data were corrected for overall brain size differences.
Main Results:
- Schizophrenic patients treated with olanzapine exhibited a greater reduction in cortical volume in frontal and parietal regions compared to controls.
- No significant correlation was found between clinical outcomes and observed volumetric changes.
Conclusions:
- Olanzapine's effect on cortical volume in chronically ill schizophrenia patients may resemble that of typical antipsychotics.
- While findings suggest a similar action profile, alternative explanations cannot be entirely ruled out based on the current data.
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