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Related Experiment Videos

Ex uno multi: subtyping the schizophrenic syndrome.

D V Jeste, J E Kleinman, S G Potkin

    Biological Psychiatry
    |February 1, 1982
    PubMed
    Summary

    Two biological markers, ventricle/brain ratio and platelet monoamine oxidase activity, may help identify distinct subgroups in chronic schizophrenia patients, aiding personalized treatment approaches.

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    Psychological medicine·2003

    Area of Science:

    • Neuroscience
    • Psychiatry
    • Biochemistry

    Background:

    • Schizophrenia is a complex psychiatric disorder with heterogeneous clinical presentations.
    • Identifying distinct subgroups within schizophrenia is crucial for understanding pathophysiology and optimizing treatment.

    Purpose of the Study:

    • To investigate whether specific biological and clinical variables can effectively subgroup 93 chronic schizophrenic inpatients.
    • To explore the potential of ventricle/brain ratio (VBR) and platelet monoamine oxidase (MAO) activity in schizophrenia subgrouping.

    Main Methods:

    • Analysis of historical, epidemiologic, phenomenologic, biochemical, neuropathological, and treatment-response data in 93 chronic schizophrenic inpatients.
    • Univariate and multivariate statistical analyses were employed to classify patients based on seven dimensions, including VBR, premorbid adjustment, neuroleptic response, MAO activity, paranoid features, tardive dyskinesia, and hemispheric asymmetry.

    Main Results:

    • Elevated VBR was associated with poor premorbid adjustment, neurological impairment, and poor response to neuroleptics.
    • Low platelet MAO activity correlated with the presence of paranoid features and tardive dyskinesia.
    • VBR and platelet MAO activity emerged as potentially useful biological markers for subgrouping.

    Conclusions:

    • Ventricle/brain ratio and platelet monoamine oxidase activity may serve as valuable biological indicators for identifying distinct subgroups within the chronic schizophrenia population.
    • These findings suggest potential avenues for more targeted diagnostic and therapeutic strategies in schizophrenia management.

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