Abstract
Rationale: The effects of antidepressants on mood, cognition and the daily activities of Alzheimer
patients are ambiguous. The effects of antidepressants SSRIs (serotonin specific reuptake
inhibitors), TCAs (tricyclic antidepressants) and SNRIs (serotonin-norepinephrine
reuptake inhibitors), in particular, are unknown.
Objectives: This study aimed to compare the effects of sertraline, venlafaxine and desipramine
on depression, cognition and the daily activities of Alzheimer patients.
Methods: This randomized double-blind trial was approved by the Research and Ethics Committees
of Mashhad University of Medical Sciences. 59 moderate Alzheimer patients with major
depressive disorder were randomly divided into 3 groups (sertraline, venlafaxine and
desipramine), treated for 12 weeks (150 mg maximum dose) and assessed by the Hamilton
Depression Test (HRSD), the Mini Mental State Examination (MMSE) and the Barthel index
at the week 0 and the 2nd, 4th, 8th, 12th weeks thereafter. Data were analyzed by SPSS software, using ANOVA and paired t-tests.
Results: In the sertraline group, the results of all 3 tests, HRSD, MMSE and Barthel, in the
12th week showed significant improvements in comparison to the baseline (P<0.05 in all
3 tests). In the venlafaxine group, the results of MMSE and Barthel revealed significant
improvements (P<0.05 in both tests). In the desipramine group, there was a significant
improvement only in the Barthel test at the 12th week (P<0.05).
Conclusion: In this trial, sertraline treatment was associated with superior effectiveness in
relation to depressive, cognitive, and behavioral symptoms.
Key words
Alzheimer’s disease (AD) - antidepressants - dementia - cognition - depression