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Published on: December 2, 2015
Minor physical anomalies in patients with bipolar I disorder and normal controls
Valentin Akabaliev1, Stefan Sivkov, Mladen Mantarkov
1Department of Psychiatry, Medical University, Plovdiv, Bulgaria.
Background:
The neurodevelopmental hypothesis is well established in schizophrenia but has received modest empirical support in bipolar disorder. In schizophrenia it is partly based on the higher prevalence of minor physical anomalies (MPAs), established by many well controlled studies. No studies with comparable designs have been performed in bipolar disorder. The present study aims to establish the rate and topographic distribution of MPAs in bipolar I patients.
Methods:
The subjects were 61 patients (25 men, 36 women) with bipolar I disorder and 103 normal subjects (49 men, 54 women) who were examined for MPAs using a modified version of the Waldrop Physical Anomaly Scale.
Results:
The bipolar I patients showed significantly higher regional MPA scores in 3 distinct regions - mouth, feet and head, as well as in the overall scores for the craniofacial complex, the periphery and the total MPA score. Differences were statistically significant for 3 anomalies - high/steepled palate, big gap between I and II toes and furrowed tongue that made significant contribution to the prediction of the patient-control status in a discriminant analysis model.
Conclusions:
Our data suggest that aberrant processes of neurodevelopment may contribute to the etiology of bipolar I disorder. The field is open for further research using modern instruments and designs in order to identify potential biological markers for bipolar disorder.
Insights
Bipolar I disorder patients exhibit more minor physical anomalies (MPAs) in the mouth, feet, and head compared to controls, suggesting neurodevelopmental links. Further research is needed for biological markers.
Area of Science:
- Neuroscience
- Psychiatry
- Genetics
Background:
- The neurodevelopmental hypothesis is established in schizophrenia but less supported in bipolar disorder.
- Minor physical anomalies (MPAs) are linked to schizophrenia but understudied in bipolar disorder.
- This study investigates MPAs in bipolar I disorder patients.
Purpose of the Study:
- To determine the prevalence and distribution of MPAs in bipolar I disorder.
- To explore potential neurodevelopmental contributions to bipolar I disorder etiology.
Main Methods:
- 61 bipolar I patients and 103 controls were assessed for MPAs.
- A modified Waldrop Physical Anomaly Scale was utilized.
- Discriminant analysis was employed to identify predictive anomalies.
Main Results:
- Bipolar I patients had significantly higher MPA scores in the mouth, feet, and head regions.
- Elevated scores were observed in craniofacial complex, periphery, and total MPA scores.
- High/steepled palate, toe gap, and furrowed tongue predicted patient-control status.
Conclusions:
- Aberrant neurodevelopmental processes may play a role in bipolar I disorder etiology.
- Findings suggest MPAs could serve as potential biological markers for bipolar disorder.
- Further research with advanced methods is recommended to identify biomarkers.
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