期刊
DEPRESSION AND ANXIETY
卷 34, 期 11, 页码 1065-1071出版社
WILEY
DOI: 10.1002/da.22675
关键词
biological markers; bipolar disorder; brain imaging; neuroimaging; depression; treatment resistance
资金
- Assistance Publique-Hopitaux de Paris (AP-HP) [PHRC/AOM-98099]
- French Health Ministry [PHRC/AOM-98099]
- French Institute for Health and Medical Research (INSERM) [INSERM-PROGRES A99013LS]
- AP-HP/INSERM interface grant
- APHP/INSERM grant
BackgroundAlthough treatment-resistant and nontreatment-resistant depressed patients show structural brain anomalies relative to healthy controls, the difference in regional volumetry between these two groups remains undocumented. MethodsA whole-brain voxel-based morphometry (VBM) analysis of regional volumes was performed in 125 participants' magnetic resonance images obtained on a 1.5 Tesla scanner; 41 had treatment-resistant depression (TRD), 40 nontreatment-resistant depression (non-TRD), and 44 were healthy controls. The groups were comparable for age and gender. Bipolar/unipolar features as well as pharmacological treatment classes were taken into account as covariates. ResultsTRD patients had higher gray matter (GM) volume in the left and right amygdala than non-TRD patients. No difference was found between the TRD bipolar and the TRD unipolar patients, or between the non-TRD bipolar and non-TRD unipolar patients. An exploratory analysis showed that lithium-treated patients in both groups had higher GM volume in the superior and middle frontal gyri in both hemispheres. ConclusionsHigher GM volume in amygdala detected in TRD patients might be seen in perspective with vulnerability to chronicity, revealed by medication resistance.
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