Structural abnormalities in the cerebral cortex of chronic schizophrenic patients

Area of Science:

• Neuroimaging
• Psychiatry
• Neurology

Background:

• Enlarged cerebral ventricles are observed in some chronic schizophrenia patients, suggesting potential cerebral atrophy.
• The extent to which this atrophy involves the cerebral cortex in schizophrenia is not fully understood.

Purpose of the Study:

• To investigate whether cerebral cortical structural abnormalities are present in chronic schizophrenia patients.
• To determine the relationship between cortical abnormalities, ventricular enlargement, and clinical factors in schizophrenia.

Main Methods:

• Computerized tomography (CT) scans were used to measure fissure and sulci widths in 60 chronic schizophrenia patients and 15 patients with other psychiatric diagnoses.
• Measurements were compared to those of 62 asymptomatic volunteers, all under 50 years of age.
• Abnormalities were assessed blindly, and clinical data including age, illness duration, and hospitalization length were collected.

Main Results:

• Nineteen of 60 chronic schizophrenia patients exhibited at least one cortical abnormality.
• Patients with other diagnoses showed no significant abnormalities compared to controls.
• Two-thirds of chronic schizophrenia patients displayed some cerebral structural abnormality, including ventricular enlargement.
• Ventricular enlargement did not significantly correlate with observed cortical abnormalities.

Conclusions:

• Chronic schizophrenia is associated with widespread cerebral structural abnormalities, affecting both ventricular size and cortical morphology.
• The lack of correlation between ventricular enlargement and cortical abnormalities suggests diverse underlying etiologies for these structural changes in schizophrenia.
• Further research is needed to elucidate the specific causes of structural brain alterations in chronic schizophrenia.