Cortical abnormalities in Parkinson's disease patients and relationship to depression: A surface-based morphometry
Peiyu Huang1, Yuting Lou2, Min Xuan1
1Department of Radiology, 2nd Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
Psychiatry Research. Neuroimaging
|April 24, 2016
Summary
Parkinson's disease (PD) patients often experience depression. Brain imaging revealed that depressed PD patients have distinct structural changes in specific brain regions, suggesting a link between brain morphometry and depression in PD.
Area of Science:
- Neuroscience
- Neurology
- Psychiatry
Background:
- Depression is a frequent comorbidity in Parkinson's disease (PD).
- Brain structural deficits are hypothesized to underlie depression in PD patients.
- Understanding these neuroanatomical changes is crucial for managing PD-related depression.
Purpose of the Study:
- To investigate the relationship between morphometric alterations and depression in Parkinson's disease.
- To identify specific brain regions associated with depression in PD patients using neuroimaging.
Main Methods:
- Enrolled 17 depressed PD patients, 17 non-depressed PD patients, and 45 healthy controls.
- Conducted neurological and psychiatric clinical assessments for all participants.
- Utilized T1-weighted MRI and surface-based morphometric analyses to examine cortical thickness and area.
Main Results:
- Parkinson's disease patients showed reduced cortical thickness in the left precentral and right postcentral gyri compared to controls.
- Depressed PD patients exhibited enlarged cortical areas in orbitofrontal regions and the insula compared to non-depressed PD patients.
- These findings suggest potential white matter atrophy in the orbitofrontal and insular regions in depressed PD patients.
Conclusions:
- Morphometric abnormalities in specific brain regions are associated with depression in Parkinson's disease.
- Orbitofrontal and insular regions, potentially with white matter atrophy, are implicated in PD-related depression.
- These results support the contribution of structural brain changes to the manifestation of depression in Parkinson's disease.
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