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Publication year
2009Source
Biological Psychiatry, 65, 9, (2009), pp. 812-8ISSN
Publication type
Article / Letter to editor

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Organization
Donders Centre for Cognitive Neuroimaging
Psychiatry
Neurology
Radiology
PI Group Memory & Emotion
Geriatrics
Former Organization
F.C. Donders Centre for Cognitive Neuroimaging
Journal title
Biological Psychiatry
Volume
vol. 65
Issue
iss. 9
Page start
p. 812
Page end
p. 8
Subject
110 012 Social cognition of verbal communication; 130 000 Cognitive Neurology & Memory; 130 027 Brain Imaging Genetics - Alzheimer Disease; DCN 1: Perception and Action; NCEBP 9: Mental health; ONCOL 5: Aetiology, screening and detectionAbstract
BACKGROUND: The amygdala and hippocampus play a key role in the neural circuitry mediating depression. It remains unclear how much structural and functional changes of amygdala and hippocampus reflect the acute state of depression or an underlying neurobiological trait marker of depression. METHODS: High-resolution anatomical images were acquired in 20 medication-naive major depressive disorder (MDD) patients with a current first episode, 20 medication-free patients recovered from a first episode of MDD, and 20 healthy control subjects that were matched for age, gender, and level of education. Manual volumetry of amygdala and hippocampus was performed on coronal images. Volumetric measurements of brain volume and intracranial volume were acquired with automatic segmentation procedures. RESULTS: Both amygdalae were significantly enlarged in currently depressed patients, whereas there was no significant difference between recovered patients and control subjects. The amygdala enlargement correlated positively with the severity of depressive state but with no other clinical or neuropsychological variable. The hippocampal volume did not differ between groups. CONCLUSIONS: A state related increase of amygdala volume can be detected early in the course of MDD. Neurotoxic effects might account for the fact that state-related amygdala enlargement has not been found in recurrent depression with relative long illness duration.
This item appears in the following Collection(s)
- Academic publications [205104]
- Donders Centre for Cognitive Neuroimaging [3442]
- Electronic publications [103316]
- Faculty of Medical Sciences [81055]
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