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Depression Plays a Moderating Role in the Cognitive Decline Associated With Changes of Brain White Matter Hyperintensities

Authors
Park, Joon HyukLee, Seok BumLee, Jung JaeYoon, Jong ChulHan, Ji WonKim, Tae HuiJeong, Hyun-GhangNewhouse, Paul A.Taylor, Warren D.Kim, Jae HyoungWoo, Jong InnKim, Ki Woong
Issue Date
9월-2018
Publisher
PHYSICIANS POSTGRADUATE PRESS
Citation
JOURNAL OF CLINICAL PSYCHIATRY, v.79, no.5
Indexed
SCIE
SSCI
SCOPUS
Journal Title
JOURNAL OF CLINICAL PSYCHIATRY
Volume
79
Number
5
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/73664
DOI
10.4088/JCP.17m11763
ISSN
0160-6689
Abstract
Objective: In the elderly, depression and white matter hyperintensities (WMH) are common and associated with cognitive impairment. This study investigated the possible interactions between depression and WMH in their influences on cognition of the elderly. Methods: Using multiple neuropsychological tests, we evaluated the cognitive function of 122 community-dwelling elders with depression at baseline between November 2008 and February 2009. Major depressive disorder, dysthymic disorder, and minor depressive disorder were diagnosed according to DSM-IV criteria. Subsyndromal depressive disorder was operationally defined using a modification of DSM-IV criteria. We visually rated WMH severity according to the modified Fazekas scale and calculated WMH volume using an automated method. We defined WMH (+) as having a score of 2 or higher on the modified Fazekas scale. In the 3-year follow-up study, baseline participants were reassessed between November 2011 and February 2013 with the same methodology. Results: Baseline depression was associated with a decline over 3 years in the Categorical Verbal Fluency Test (VFT) (P = .001), Word List Memory Test (WLMT) (P = .019), Trail Making Test A (TMT-A) (P = .018), and Mini-Mental State Examination (MMSE) (P = .017), while baseline WMH (+) was associated with a decline in WLMT (P = .039) only. An increase of WMH volume over 3 years was associated with a decline in the performances of VFT (P = .044), WLMT (P = .044), Word List Recall Test (P = .040), Word List Recognition Test (P = .036), and TMT-A (P = .001) over the same period only in the subjects with depression at baseline. Conclusions: Depressive disorder and WMH are interactively associated with the poor performance of multiple cognitive functions. Depressive disorder may moderate the cognitive decline associated with the changes of brain WMH.
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