Dopaminergic, serotonergic, and oxytonergic candidate genes associated with infant attachment security and disorganization? In search of main and interaction effects / Maartje P.C.M. LUIJK in Journal of Child Psychology and Psychiatry, 52-12 (December 2011)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 52-12 (December 2011) . - p.1295-1307 Titre : Dopaminergic, serotonergic, and oxytonergic candidate genes associated with infant attachment security and disorganization? In search of main and interaction effects Type de document : Texte imprimé et/ou numérique Auteurs : Maartje P.C.M. LUIJK, Auteur ; Glenn I. ROISMAN, Auteur ; John D. HALTIGAN, Auteur ; Henning TIEMEIER, Auteur ; Cathryn BOOTH-LAFORCE, Auteur ; Marinus H. VAN IJZENDOORN, Auteur ; Jay BELSKY, Auteur ; André G. UITTERLINDEN, Auteur ; Vincent W.V. JADDOE, Auteur ; Albert HOFMAN, Auteur ; Frank C. VERHULST, Auteur ; Anne THARNER, Auteur ; Marian J. BAKERMANS-KRANENBURG, Auteur Année de publication : 2011 Article en page(s) : p.1295-1307 Langues : Anglais (eng) Mots-clés : Attachment  Strange Situation Procedure  candidate genes  parenting  sensitivity  G × E Index. décimale : PER Périodiques Résumé : Background and methods:  In two birth cohort studies with genetic, sensitive parenting, and attachment data of more than 1,000 infants in total, we tested main and interaction effects of candidate genes involved in the dopamine, serotonin, and oxytocin systems (DRD4, DRD2, COMT, 5-HTT, OXTR) on attachment security and disorganization. Parenting was assessed using observational rating scales for parental sensitivity (Ainsworth, Bell, & Stayton, 1974), and infant attachment was assessed with the Strange Situation Procedure. Results:  We found no consistent additive genetic associations for attachment security and attachment disorganization. However, specific tests revealed evidence for a codominant risk model for COMT Val158Met, consistent across both samples. Children with the Val/Met genotype showed higher disorganization scores (combined effect size d = .22, CI = .10–.34, p < .001). Gene-by-environment interaction effects were not replicable across the two samples. Conclusions:  This unexpected finding might be explained by a broader range of plasticity in heterozygotes, which may increase susceptibility to environmental influences or to dysregulation of emotional arousal. This study is unique in combining the two largest attachment cohorts with molecular genetic and observed rearing environment data to date. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2011.02440.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=147 [article] Dopaminergic, serotonergic, and oxytonergic candidate genes associated with infant attachment security and disorganization? In search of main and interaction effects [Texte imprimé et/ou numérique] / Maartje P.C.M. LUIJK, Auteur ; Glenn I. ROISMAN, Auteur ; John D. HALTIGAN, Auteur ; Henning TIEMEIER, Auteur ; Cathryn BOOTH-LAFORCE, Auteur ; Marinus H. VAN IJZENDOORN, Auteur ; Jay BELSKY, Auteur ; André G. UITTERLINDEN, Auteur ; Vincent W.V. JADDOE, Auteur ; Albert HOFMAN, Auteur ; Frank C. VERHULST, Auteur ; Anne THARNER, Auteur ; Marian J. BAKERMANS-KRANENBURG, Auteur . - 2011 . - p.1295-1307. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 52-12 (December 2011) . - p.1295-1307 Mots-clés : Attachment  Strange Situation Procedure  candidate genes  parenting  sensitivity  G × E Index. décimale : PER Périodiques Résumé : Background and methods:  In two birth cohort studies with genetic, sensitive parenting, and attachment data of more than 1,000 infants in total, we tested main and interaction effects of candidate genes involved in the dopamine, serotonin, and oxytocin systems (DRD4, DRD2, COMT, 5-HTT, OXTR) on attachment security and disorganization. Parenting was assessed using observational rating scales for parental sensitivity (Ainsworth, Bell, & Stayton, 1974), and infant attachment was assessed with the Strange Situation Procedure. Results:  We found no consistent additive genetic associations for attachment security and attachment disorganization. However, specific tests revealed evidence for a codominant risk model for COMT Val158Met, consistent across both samples. Children with the Val/Met genotype showed higher disorganization scores (combined effect size d = .22, CI = .10–.34, p < .001). Gene-by-environment interaction effects were not replicable across the two samples. Conclusions:  This unexpected finding might be explained by a broader range of plasticity in heterozygotes, which may increase susceptibility to environmental influences or to dysregulation of emotional arousal. This study is unique in combining the two largest attachment cohorts with molecular genetic and observed rearing environment data to date. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2011.02440.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=147

Recognition of scared faces and the serotonin transporter gene in young children: the Generation R Study / Eszter SZEKELY in Journal of Child Psychology and Psychiatry, 52-12 (December 2011)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 52-12 (December 2011) . - p.1279-1286 Titre : Recognition of scared faces and the serotonin transporter gene in young children: the Generation R Study Type de document : Texte imprimé et/ou numérique Auteurs : Eszter SZEKELY, Auteur ; Catherine M. HERBA, Auteur ; Pascal P. ARP, Auteur ; André G. UITTERLINDEN, Auteur ; Vincent W.V. JADDOE, Auteur ; Albert HOFMAN, Auteur ; Frank C. VERHULST, Auteur ; James J. HUDZIAK, Auteur ; Henning TIEMEIER, Auteur Année de publication : 2011 Article en page(s) : p.1279-1286 Langues : Anglais (eng) Mots-clés : Serotonin transporter gene  emotion processing  facial expression  fear  children Index. décimale : PER Périodiques Résumé : Background:  Previous research highlights the significance of a functional polymorphism located in the promoter region (5-HTTLPR) of the serotonin transporter gene in emotional behaviour. This study examined the effect of the 5-HTTLPR polymorphism on emotion processing in a large number of healthy preschoolers. Methods:  The 5-HTTLPR genotype was classified in 605 children as homozygous for the short allele (SS), homozygous for the long allele (LL), or heterozygous (LS). Emotion-processing was assessed using age-appropriate computer tasks where children matched happy, sad, angry, and fearful facial expressions preceded by a shape-matching task to assess basic matching ability. Results:  We found that young children could differentiate between emotion categories (F = 12.1, p < .001). The effect of 5-HTTLPR genotype depended on the emotion category presented (F = 2.3, p = .031). This effect was explained by the finding that SS children were less accurate at recognising fearful faces than LL or LS children (F = 5.3, p = .005). We did not find any significant differences as a result of 5-HTTLPR genotype for happy, sad or angry expressions (p > .05). Conclusions:  Results indicate that 5-HTTLPR allele status selectively impacts the processing of fearful but not other facial expressions. This pattern is already apparent in very young typically developing children. Results may signal an early vulnerability for affective problems before disorders emerge. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2011.02423.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=146 [article] Recognition of scared faces and the serotonin transporter gene in young children: the Generation R Study [Texte imprimé et/ou numérique] / Eszter SZEKELY, Auteur ; Catherine M. HERBA, Auteur ; Pascal P. ARP, Auteur ; André G. UITTERLINDEN, Auteur ; Vincent W.V. JADDOE, Auteur ; Albert HOFMAN, Auteur ; Frank C. VERHULST, Auteur ; James J. HUDZIAK, Auteur ; Henning TIEMEIER, Auteur . - 2011 . - p.1279-1286. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 52-12 (December 2011) . - p.1279-1286 Mots-clés : Serotonin transporter gene  emotion processing  facial expression  fear  children Index. décimale : PER Périodiques Résumé : Background:  Previous research highlights the significance of a functional polymorphism located in the promoter region (5-HTTLPR) of the serotonin transporter gene in emotional behaviour. This study examined the effect of the 5-HTTLPR polymorphism on emotion processing in a large number of healthy preschoolers. Methods:  The 5-HTTLPR genotype was classified in 605 children as homozygous for the short allele (SS), homozygous for the long allele (LL), or heterozygous (LS). Emotion-processing was assessed using age-appropriate computer tasks where children matched happy, sad, angry, and fearful facial expressions preceded by a shape-matching task to assess basic matching ability. Results:  We found that young children could differentiate between emotion categories (F = 12.1, p < .001). The effect of 5-HTTLPR genotype depended on the emotion category presented (F = 2.3, p = .031). This effect was explained by the finding that SS children were less accurate at recognising fearful faces than LL or LS children (F = 5.3, p = .005). We did not find any significant differences as a result of 5-HTTLPR genotype for happy, sad or angry expressions (p > .05). Conclusions:  Results indicate that 5-HTTLPR allele status selectively impacts the processing of fearful but not other facial expressions. This pattern is already apparent in very young typically developing children. Results may signal an early vulnerability for affective problems before disorders emerge. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2011.02423.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=146

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