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Brain Motor Region Diffusion Tensor Imaging in Patients with Catatonic Schizophrenia: A Case-Control Study
Amir Krivoy1,2,3,4, Shai Shrot2,5, Matan Avrahami1,2
1Geha Mental Health Center, Petah Tikva, Israel.
The Israel Medical Association Journal : IMAJ
|October 21, 2021
Summary
Catatonic schizophrenia shows altered brain connectivity in motor circuits. Diffusion tensor imaging revealed significant differences in white matter diffusivity in specific brain regions, suggesting a neurobiological basis for motor symptoms in this subtype of schizophrenia.
Area of Science:
- Neuroimaging
- Psychiatry
- Neurology
Background:
- Catatonia is a rare but distinct neuropsychiatric syndrome occurring in a small subset of schizophrenia patients.
- Existing research implicates brain motor circuits in the pathophysiology of catatonia.
- Limited data exists on white matter diffusivity changes within these motor circuits in catatonic schizophrenia.
Purpose of the Study:
- To investigate the involvement of brain motor circuits in schizophrenia patients exhibiting catatonic symptoms.
- To identify potential neuroimaging markers associated with catatonia in schizophrenia.
Main Methods:
- Diffusion tensor imaging (DTI) was employed to assess white matter integrity.
- DTI data was analyzed in seven patients with catatonic schizophrenia and seven matched controls with non-catatonic schizophrenia.
- Key motor circuit regions, including the splenium of the corpus callosum, cerebellar peduncle, and internal capsule, were examined.
Main Results:
- Significantly elevated fractional anisotropy (FA) was observed in the splenium of the corpus callosum, right cerebellar peduncle, and right internal capsule in catatonic schizophrenia patients.
- These findings indicate altered white matter diffusivity within motor-related brain areas.
- The results suggest a distinct pattern of microstructural brain abnormalities in catatonic schizophrenia.
Conclusions:
- Catatonic schizophrenia is characterized by disrupted connectivity within specific motoric brain regions and their associated neural circuits.
- Further DTI research is warranted to elucidate the neural underpinnings of motor abnormalities in acute and remitted catatonic schizophrenia.
- Understanding these neural correlates is crucial for identifying the specific pathophysiology of schizophrenia-related catatonia.
