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Executive dysfunction in medicated, remitted state of major depression
Yoshiyuki Nakano1, Hajime Baba, Hitoshi Maeshima
1Department of Psychiatry, Juntendo University, School of Medicine, Tokyo, Japan.
Journal of Affective Disorders
|February 29, 2008
Summary
Executive dysfunction persists in remitted major depressive disorder (MDD) patients, with distinct patterns in young versus elderly individuals. Vascular lesions particularly impact executive function in elderly patients with depression.
Area of Science:
- Neuropsychology
- Gerontology
- Psychiatry
Background:
- Executive dysfunction is a known issue in depression, sometimes persisting after symptom remission.
- Elderly individuals with depression show a correlation between cerebrovascular lesions and executive dysfunction.
- Previous studies highlight executive dysfunction in depression, but age-related differences and vascular links require further investigation.
Purpose of the Study:
- To investigate executive functions in remitted major depressive disorder (MDD) patients.
- To compare executive dysfunction patterns between young and elderly remitted MDD patients.
- To determine the relationship between vascular lesions and executive dysfunction in remitted MDD patients.
Main Methods:
- 79 remitted MDD inpatients and 85 healthy controls participated.
- Cognitive assessments included the Wisconsin Card Sorting Test (WCST), Stroop test, and Verbal Fluency Test (VFT).
- Participants were categorized into young and elderly groups for comparative analysis.
Main Results:
- Remitted MDD patients scored lower on the Stroop test compared to controls.
- Elderly MDD patients showed significantly lower Verbal Fluency Test (VFT) scores than all other groups.
- Multiple regression analysis indicated that vascular lesions influenced VFT scores.
Conclusions:
- Executive dysfunction persists in remitted MDD patients, with age-specific patterns of impairment.
- Vascular lesions are associated with executive dysfunction, especially in elderly individuals with a history of depression.
- Findings underscore the long-term cognitive impact of MDD and the role of vascular factors in elderly patients.
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