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Clinical variables and platelet mao in schizophrenia
I Sharma1, A Kumar, J P Chansouria
1Reader in Bio-Psychiatry, Institute of Medical Science Banaras Hindu University, Varanasi-221 005.
Indian Journal of Psychiatry
|September 8, 2011
Summary
Schizophrenia patients, particularly those with paranoid traits or schizoid personalities, exhibit lower platelet monoamine oxidase (MAO) activity. This enzyme activity correlates negatively with illness severity and duration.
Area of Science:
- Neuroscience
- Psychiatry
- Biochemistry
Background:
- Schizophrenia is a complex psychiatric disorder with diverse clinical presentations.
- Monoamine oxidase (MAO) is an enzyme involved in neurotransmitter metabolism, and its activity has been implicated in various psychiatric conditions.
Purpose of the Study:
- To investigate platelet monoamine oxidase (MAO) activity in male, drug-free schizophrenic patients compared to controls.
- To explore the relationship between platelet MAO activity and specific schizophrenia subtypes (paranoid vs. non-paranoid) and premorbid personality traits (schizoid vs. non-schizoid).
Main Methods:
- Platelet MAO activity was measured in 60 male patients diagnosed with schizophrenia and 26 age-matched healthy controls.
- Patients were assessed for paranoid or non-paranoid subtypes and premorbid schizoid or non-schizoid personality traits.
- Correlation analyses were performed to assess the relationship between MAO activity and illness severity, duration, family history, hallucinations, and age of onset.
Main Results:
- Significantly lower platelet MAO activity was observed in the paranoid schizophrenia group compared to the non-paranoid group and controls.
- Patients with a premorbid schizoid personality exhibited significantly lower MAO activity than those with non-schizoid premorbid personality and controls.
- A significant negative correlation was found between platelet MAO activity and both the severity and duration of the illness.
Conclusions:
- Reduced platelet MAO activity may be a biological marker associated with specific subtypes and personality traits in schizophrenia.
- The findings suggest a potential role for MAO in the pathophysiology of schizophrenia, particularly in relation to illness progression and presentation.
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