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5-HTTLPR, victimization and ecological executive function of adolescents
JiaJia Liu1, Fenglin Cao2, Ping Li2
1School of Nursing, Shandong University, Jinan 250012, China; Neurogenetics Unit, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden; Center for Molecular Medicine, Karolinska University Hospital, Stockholm, Sweden.
Psychiatry Research
|February 28, 2016
Summary
Adolescent victimization is linked to executive dysfunction (EF). This association is stronger in individuals with a specific gene variation (5-HTTLPR), indicating genetic vulnerability to adversity-related EF deficits.
Area of Science:
- Neuroscience
- Genetics
- Developmental Psychology
Background:
- Executive function (EF) is crucial for social, academic, and behavioral development.
- Childhood trauma and victimization negatively impact EF.
- The serotonin transporter gene-linked polymorphic region (5-HTTLPR) may moderate this relationship.
Purpose of the Study:
- To investigate the association between victimization and executive dysfunction (ED) in adolescents.
- To examine if this association is moderated by the 5-HTTLPR gene polymorphism.
- To explore genetic vulnerability to adversity-related EF deficits.
Main Methods:
- Cross-sectional study of 2125 Han Chinese school students.
- Data collected on demographics, victimization experiences, and daily life EF.
- Genotyping for 5-HTTLPR in participants with executive dysfunction (n=169) and controls (n=208).
Main Results:
- Victimization positively correlated with executive dysfunction (ED).
- This association was significantly stronger in individuals homozygous for the short allele of 5-HTTLPR.
- A significant interaction between 5-HTTLPR genotype and victimization on ED was observed.
Conclusions:
- Adolescents with the low-activity 5-HTT genotype (short allele homozygotes) are more susceptible to executive dysfunction following victimization.
- Childhood adversity-associated executive dysfunction is influenced by genetic factors.
- Findings highlight the role of gene-environment interactions in adolescent development.
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