NDLI: White matter abnormalities in adolescents with major depressive disorder

Content Provider	Springer Nature Link
Author	Bessette, Katie L. Nave, Andrea M. Caprihan, Arvind Stevens, Michael C.
Copyright Year	2013
Abstract	The purpose of this study was to identify areas of abnormal white matter microstructure in adolescents with Major Depressive Disorder (MDD) using diffusion tensor imaging (DTI). Fractional anisotropy (FA) values representing preferential diffusivity along major tracts were examined using tract-based spatial statistics across the whole brain in adolescents ages 13–19 with MDD (n = 31) compared with demographically-matched healthy controls (n = 31). We not only examined frontal lobe tracts that have been most frequently identified as abnormal in previous DTI studies of older depressed patients, but also tested for FA group differences across the whole brain to determine if adolescent depression was related to any other regional white matter abnormality. MDD-diagnosed adolescents had significantly lower FA in many regions concentrated predominantly in the frontal lobe. There also was strong evidence for lower FA in bilateral anterior/posterior limbs of the internal capsules, as well as tracts through the midbrain, left external capsule, right thalamic radiation and left inferior longitudinal fasciculus. Consistent with previous findings in depressed young and elderly adults, the current study found evidence for abnormal microstructure in white matter connections of the frontal lobe in MDD adolescents. There also was strong evidence for FA abnormalities in corpus callosum genu, internal and external capsule tracts, thalamus and midbrain, notable for both the relative magnitude of these effects and absence from most previous white matter studies of depression. These abnormalities might represent important markers of early life-onset depression.
Starting Page	531
Ending Page	541
Page Count	11
File Format	PDF
ISSN	19317557
Journal	Brain Imaging and Behavior
Volume Number	8
Issue Number	4
e-ISSN	19317565
Language	English
Publisher	Springer US
Publisher Date	2013-11-19
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Adolescent depression Diffusion tensor imaging White matter Neurosciences Neuroradiology Neuropsychology Psychiatry
Content Type	Text
Resource Type	Article
Subject	Neurology Radiology, Nuclear Medicine and Imaging Cognitive Neuroscience Behavioral Neuroscience Neurology (clinical) Cellular and Molecular Neuroscience Psychiatry and Mental Health

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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