Bibliographic Details
| Title: |
Diffusion tensor imaging predictors of treatment outcomes in major depressive disorder. |
| Authors: |
Korgaonkar, Mayuresh S., Williams, Leanne M., Yun Ju Song, Usherwood, Tim, Grieve, Stuart M. |
| Source: |
British Journal of Psychiatry. Oct2014, Vol. 205 Issue 4, p321-328. 8p. |
| Subjects: |
Diffusion tensor imaging, Mental depression, Therapeutics, Antidepressants, Biomarkers, Magnetic resonance imaging of the brain |
| Abstract: |
Background Functional neuroimaging studies implicate anterior cingulate and limbic dysfunction in major depressive disorder (MDD) and responsiveness to antidepressants. Diffusion tensor imaging (DTI) enables characterisation of white matter tracts that relate to these regions. Aims To examine whether DTI measures of anterior cingulate and limbic white matter are useful prognostic biomarkers for MDD. Method Of the 102 MDD out-patients from the International Study to Predict Optimized Treatment for Depression (iSPOT-D) who provided baseline magnetic resonance imaging (MRI) data, 74 completed an 8-week course of antidepressant medication (randomised to escitalopram, sertraline or extended-release venlafaxine) and were included in the present analyses. Thirty-four matched controls also provided DTI data. Fractional anisotropy was measured for five anterior cingulate-limbic white matter tracts: cingulum cingulate and hippocampus bundle, fornix, stria terminate and uncinate fasciculus. (Trial registered at ClinicalTriais.gov: NCT00693849.) Results A cross-validated logistic regression model demonstrated that altered connectivity for the cingulum part of the cingulate and stria terminalis tracts significantly predicted remission independent of demographic and clinical measures with 62% accuracy. Prediction improved to 74% when age was added to this model. Conclusions Anterior cingulate-limbic white matter is a useful predictor of antidepressant treatment outcome in MDD. Declaration of interest L.M.W. is a small equity holder in Brain Resource Ltd. S.M.G. and L.M.W. have also previously received consultancy fees from Brain Resource Ltd. [ABSTRACT FROM AUTHOR] |
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| Database: |
Psychology and Behavioral Sciences Collection |
