Association of polymorphisms of the serotonergic pathways with clinical traits of impulsive-aggression and suicidality in adolescents: A multi-center study

作者：Zalsman Gil^*; Patya Miriam; Frisch Amos; Ofek Hadas; Schapir Lior; Blum Ilana; Harell Daniella; Apter Alan; Weizman Abraham; Tyano Samuel

来源：World Journal of Biological Psychiatry, 2011, 12(1): 33-41.

DOI：10.3109/15622975.2010.518628

• Suicide
• aggression
• HTR2A
• 5HTTLPR
• MAOA
• polymorphism

Objectives. Suicidal behaviour runs in families. This study evaluated association between common polymorphisms in the serotonergic and adrenergic candidate genes (HTR2A, 5HTTLPR, and MAOA) and suicidality, psychopathology and aggression in adolescents. Methods. Four groups of adolescents were included: Suicidal (N = 35) and non-suicidal (N = 30) psychiatric inpatients, suicide attempters admitted to three psychiatric emergency rooms (N = 51) and a community-based control group (N = 95). All were genotyped and underwent psychological assessment for relevant endophenotypes and plasma serotonin content (p5HT) was measured. Results. Homozygosity for the T allele of the HTR2A 102T/C polymorphism was associated with lower impulsivity (P = 0.03) and aggression (P = 0.01) compared to TC carriers. Low activity MAOA genotypes were associated with suicidality (P = 0.04). No association was found between p5HT level and the examined polymorphisms. Conclusions. Our findings are in line with the associations described in adult suicidal population. Further studies are needed to evaluate the gene x environmental interactions in larger samples in an attempt to clarify the possible role of genetic factors in pediatric suicidal and impulsive-aggressive behaviour.

• 出版日期2011-2
• 单位上海市精神卫生中心