The 5-HTTLPR s/s genotype was associated with higher odds of poststroke depression compared with l/l or l/xl carriers (OR 3.1; 95% CI 1.2-8.3).
Case-Control (n=150)
Are serotonin transporter gene (SERT) polymorphisms associated with poststroke depression in stroke survivors?
The 5-HTTLPR and STin2 VNTR polymorphisms of the serotonin transporter gene are associated with an increased risk of poststroke depression, suggesting a genetic vulnerability to biopsychosocial stress.
Estimación del efecto: OR 3.1 (95% CI 1.2-8.3)
CONTEXT: Polymorphisms of the serotonin transporter gene (SERT) have been associated with mental illness. In people with long-term medical conditions, variants of the 5-HTTLPR and STin2 VNTR polymorphisms of SERT have been shown to confer a heightened vulnerability to comorbid depression. OBJECTIVE: To determine whether the 5-HTTLPR, STin2 VNTR, and rs25531 polymorphisms of SERT are associated with poststroke depression (PSD) in stroke survivors. DESIGN: A case-control study in which stroke survivors were screened for depressive symptoms and assigned to either a depressed group or a nondepressed group. SETTING: Outpatient clinic. PARTICIPANTS: Seventy-five stroke survivors with PSD and 75 nondepressed stroke survivors. INTERVENTIONS: Blood or saliva samples were collected from each participant for DNA extraction and genotyping. MAIN OUTCOME MEASURES: The associations between the 5-HTTLPR, STin2 VNTR, and rs25531 polymorphisms and PSD. RESULTS: Individuals with the 5-HTTLPR s/s genotype had 3-fold higher odds of PSD compared with l/l or l/xl genotype carriers (odds ratio, 3.1; 95% confidence interval, 1.2-8.3). Participants with the STin2 9/12 or 12/12 genotype had 4-fold higher odds of PSD compared with STin2 10/10 genotype carriers (odds ratio, 4.1; 95% confidence interval, 1.2-13.6). An association of rs25531 with PSD was not shown. CONCLUSIONS: The 5-HTTLPR and the STin2 VNTR, but not the rs25531, polymorphisms of SERT are associated with PSD in stroke survivors. This gives further evidence of a role of SERT polymorphisms in mediating resilience to biopsychosocial stress.
Kohen et al. (Mon,) conducted a case-control in Poststroke depression (n=150). 5-HTTLPR, STin2 VNTR, and rs25531 polymorphisms of SERT vs. Non-carriers of the risk genotypes was evaluated on Poststroke depression (PSD) (OR 3.1, 95% CI 1.2-8.3). The 5-HTTLPR s/s genotype was associated with higher odds of poststroke depression compared with l/l or l/xl carriers (OR 3.1; 95% CI 1.2-8.3).