Indian Journal of PsychiatryIndian Journal of Psychiatry
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ORIGINAL ARTICLE
Year : 2013  |  Volume : 55  |  Issue : 2  |  Page : 135-139

A magnetic resonance imaging study of adhesio interthalamica in clinical subtypes of schizophrenia


1 Department of Anatomy and Cell Biology, Medical Genetic Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
2 Department of Psychiatry, Mashhad University of Medical Sciences, Mashhad, Iran
3 Department of Neurology, Mashhad University of Medical Sciences, Mashhad, Iran

Correspondence Address:
Hossein Haghir
Department of Anatomy and Cell Biology, Medical Genetic Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad
Iran
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Source of Support: Deputy for Research, Mashhad University of Medical Sciences (under project number 82001), Conflict of Interest: None


DOI: 10.4103/0019-5545.111450

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Context: Previous studies have suggested subtle anatomical brain differences between patients with schizophrenia and healthy control subjects. However, the results are inconsistent and there is no study investigating the various subtypes of this mental disorder separately. Aim: This study was conducted to compare the rate of absence of adhesio interthalamica (AI), a midline brain structure, between 3 subtypes of schizophrenia (paranoid, undifferentiated, and residual) and healthy control group, using magnetic resonance imaging (MRI). Materials and Methods: A total of 29 schizophrenia patients (21 men, 8 women) of three subtypes (paranoid, undifferentiated, and residual) were compared with 29 age- and gender-matched healthy controls. All subjects underwent 3-D brain MRI of full coronal series, 1.5-mm slices without interslice gaps. If the grey matter band connecting the thalami could not be identified on two or more coronal adjacent slices, the AI was considered as absent. The results were statistically analyzed. Results: The incidence rate of AI absence in patients with heterogenous subtypes of schizophrenia was was similar to control group, even when patients and controls of each gender were compared separately ( P>0.05). In residual subtype, patients showed a significant priority in AI absence in comparison with the control group ( P=0.041), which was not seen in paranoid and undifferentiated subtypes ( P>0.05). Conclusion: Residual subtype of schizophrenia is associated with higher rate of AI absence in this study. Subsequent studies are required to determine if the absence of AI is a cause of residual schizophrenia or an effect.



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