Microstructural Changes of Anterior Corona Radiata in Bipolar Depression

• 발행기관: 대한신경정신의학회
• 저자명: I. Fatih Karababa Huseyin Bayazıt Nihat Kılıç aslan Mustafa Celik Hasan Cece Ekrem Karakas Salih
• 간행물 정보: 『Psychiatry Investigation』제12권 제3호, 367~371쪽, 전체 5쪽
• 주제분류: 의약학 > 정신과학
• 파일형태: PDF
• 발행일자: 2015.07.31

영문 초록

Objective-In bipolar disorder, dysregulation of mood may result from white matter abnormalities that change fiber tract length and fiber density. There are few studies evaluating the white matter microstructural changes in bipolar I patients (BD) with depressive episodes. The present study aimed to evaluate anterior corona radiata in BD patients with depressive episode using Diffusion Tensor Imaging (DTI). Methods-Twenty-one patients with bipolar depression and 19 healthy controls were investigated and groups were matched for age and gender. Diffusion-weighted echoplanar brain images (DW-EPI) were obtained using a 1.5 T MRI scanner. Regions of interest (ROIs) were manually placed on directional maps based on principal anisotropy. Apparent diffusion coefficient (ADC) and fractional anisotropy (FA) values of white matter were measured in the anterior corona radiata (ACR) bilaterally by diffusion tensor imaging. Results-There was not a significant difference between groups of age and gender (p>0.05). Significantly lower FA was observed in bilateral ACR in bipolar patients with depression compared with healthy individuals. And there is significantly higher ADC values in the left frontal corona radiate in bipolar patients. Conclusion-White matter abnormalities can be detected in patients with BD using DTI. The neuropathology of these abnormalities is unclear, but neuronal and axonal loss, myelin abnormalities and reduced white matter fiber density are likely to be relevant.

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키워드

Diffusion tensor imaging Anterior corona radiate Bipolar disorder Depression White matter