OBJECTIVES: Early-emerging, temperamental differences in fear-related traits may be a heritable vulnerability factor for anxiety disorders. Previous research indicates that the serotonin transporter promoter region polymorphism is a candidate gene for such traits. METHODS: Associations between 5-HTTLPR genotype and indices of fearful child temperament, derived from maternal report and standardized laboratory observations, were examined in a community sample of 95 preschool-aged children. RESULTS: Children with one or more long alleles of the 5-HTTLPR gene were rated as significantly more nervous during standardized laboratory tasks than children who were homozygous for the short alleles. Children homozygous for the short alleles were also rated as significantly shyer, by maternal report, than those with at least one copy of the long allele of the 5-HTTLPR gene. CONCLUSIONS: This study extends the literature linking the short alleles of the serotonin transporter promoter region polymorphism to fear and anxiety-related traits in early childhood and adulthood, and is one of very few studies to examine the molecular genetics of preschoolers' temperament using multiple measures of traits in a normative sample.
OBJECTIVES: Early-emerging, temperamental differences in fear-related traits may be a heritable vulnerability factor for anxiety disorders. Previous research indicates that the serotonin transporter promoter region polymorphism is a candidate gene for such traits. METHODS: Associations between 5-HTTLPR genotype and indices of fearful child temperament, derived from maternal report and standardized laboratory observations, were examined in a community sample of 95 preschool-aged children. RESULTS:Children with one or more long alleles of the 5-HTTLPR gene were rated as significantly more nervous during standardized laboratory tasks than children who were homozygous for the short alleles. Children homozygous for the short alleles were also rated as significantly shyer, by maternal report, than those with at least one copy of the long allele of the 5-HTTLPR gene. CONCLUSIONS: This study extends the literature linking the short alleles of the serotonin transporter promoter region polymorphism to fear and anxiety-related traits in early childhood and adulthood, and is one of very few studies to examine the molecular genetics of preschoolers' temperament using multiple measures of traits in a normative sample.
Authors: Bryan Maloney; Balmiki Ray; Elizabeth P Hayden; John I Nurnberger; Debomoy K Lahiri Journal: Psychiatr Genet Date: 2009-04 Impact factor: 2.458
Authors: Elizabeth P Hayden; Thomas M Olino; Sara J Bufferd; Anna Miller; Lea R Dougherty; Haroon I Sheikh; Shiva M Singh; Daniel N Klein Journal: Dev Psychopathol Date: 2013-08
Authors: Michael Potegal; Brianna Yund; Kyle Rudser; Alia Ahmed; Kate Delaney; Igor Nestrasil; Chester B Whitley; Elsa G Shapiro Journal: J Clin Exp Neuropsychol Date: 2013-06-08 Impact factor: 2.475
Authors: Haroon I Sheikh; Elizabeth P Hayden; Shiva M Singh; Lea R Dougherty; Thomas M Olino; C Emily Durbin; Daniel N Klein Journal: Pers Individ Dif Date: 2008
Authors: B T Christian; A S Fox; J A Oler; N T Vandehey; D Murali; J Rogers; T R Oakes; S E Shelton; R J Davidson; N H Kalin Journal: Neuroimage Date: 2009-06-06 Impact factor: 6.556