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Auteur Barbara FRANKE |
Documents disponibles écrits par cet auteur (27)
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The serotonin transporter gene polymorphism 5-HTTLPR moderates the effects of stress on attention-deficit/hyperactivity disorder / Dennis VAN DER MEER in Journal of Child Psychology and Psychiatry, 55-12 (December 2014)
[article]
Titre : The serotonin transporter gene polymorphism 5-HTTLPR moderates the effects of stress on attention-deficit/hyperactivity disorder Type de document : Texte imprimé et/ou numérique Auteurs : Dennis VAN DER MEER, Auteur ; Catharina A. HARTMAN, Auteur ; Jennifer RICHARDS, Auteur ; Janita B. BRALTEN, Auteur ; Barbara FRANKE, Auteur ; Jaap OOSTERLAAN, Auteur ; Dirk J. HESLENFELD, Auteur ; Stephen V. FARAONE, Auteur ; Jan K. BUITELAAR, Auteur ; Pieter J. HOEKSTRA, Auteur Article en page(s) : p.1363-1371 Langues : Anglais (eng) Mots-clés : ADHD gene–environment interaction (GxE) stress serotonin transporter (5-HTTLPR) Index. décimale : PER Périodiques Résumé : Introduction The role of the serotonin transporter gene polymorphism 5-HTTLPR in attention-deficit/hyperactivity disorder (ADHD) is unclear. Heterogeneity of findings may be explained by gene–environment interactions (GxE), as it has been suggested that S-allele carriers are more reactive to psychosocial stress than L-allele homozygotes. This study aimed to investigate whether 5-HTTLPR genotype moderates the effects of stress on ADHD in a multisite prospective ADHD cohort study. Methods 5-HTTLPR genotype, as well as the number of stressful life events in the past 5 years and ongoing long-term difficulties, was determined in 671 adolescents and young adults with ADHD, their siblings, and healthy controls (57.4% male, average age 17.3 years). Linear mixed models, accounting for family relatedness, were applied to investigate the effects of genotype, experienced stress, and their interaction on ADHD severity at time point T2, while controlling for ADHD severity at T1 (mean follow-up time 5.9 years) and for comorbid internalizing problems at T2. Results The interaction between genotype and stress significantly predicted ADHD severity at T2 (p = .006), which was driven by the effect on hyperactivity–impulsivity (p = .004). Probing of the interaction effect made clear that S-allele carriers had a significantly more positive correlation between stress and ADHD severity than L-allele homozygotes. Conclusion The results show that the interaction between 5-HTTLPR and stress is a mechanism involved particularly in the hyperactivity/impulsivity dimension of ADHD, and that this is independent of comorbid internalizing problems. Further research into the neurobiological mechanisms underlying this interaction effect is warranted. En ligne : http://dx.doi.org/10.1111/jcpp.12240 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=243
in Journal of Child Psychology and Psychiatry > 55-12 (December 2014) . - p.1363-1371[article] The serotonin transporter gene polymorphism 5-HTTLPR moderates the effects of stress on attention-deficit/hyperactivity disorder [Texte imprimé et/ou numérique] / Dennis VAN DER MEER, Auteur ; Catharina A. HARTMAN, Auteur ; Jennifer RICHARDS, Auteur ; Janita B. BRALTEN, Auteur ; Barbara FRANKE, Auteur ; Jaap OOSTERLAAN, Auteur ; Dirk J. HESLENFELD, Auteur ; Stephen V. FARAONE, Auteur ; Jan K. BUITELAAR, Auteur ; Pieter J. HOEKSTRA, Auteur . - p.1363-1371.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 55-12 (December 2014) . - p.1363-1371
Mots-clés : ADHD gene–environment interaction (GxE) stress serotonin transporter (5-HTTLPR) Index. décimale : PER Périodiques Résumé : Introduction The role of the serotonin transporter gene polymorphism 5-HTTLPR in attention-deficit/hyperactivity disorder (ADHD) is unclear. Heterogeneity of findings may be explained by gene–environment interactions (GxE), as it has been suggested that S-allele carriers are more reactive to psychosocial stress than L-allele homozygotes. This study aimed to investigate whether 5-HTTLPR genotype moderates the effects of stress on ADHD in a multisite prospective ADHD cohort study. Methods 5-HTTLPR genotype, as well as the number of stressful life events in the past 5 years and ongoing long-term difficulties, was determined in 671 adolescents and young adults with ADHD, their siblings, and healthy controls (57.4% male, average age 17.3 years). Linear mixed models, accounting for family relatedness, were applied to investigate the effects of genotype, experienced stress, and their interaction on ADHD severity at time point T2, while controlling for ADHD severity at T1 (mean follow-up time 5.9 years) and for comorbid internalizing problems at T2. Results The interaction between genotype and stress significantly predicted ADHD severity at T2 (p = .006), which was driven by the effect on hyperactivity–impulsivity (p = .004). Probing of the interaction effect made clear that S-allele carriers had a significantly more positive correlation between stress and ADHD severity than L-allele homozygotes. Conclusion The results show that the interaction between 5-HTTLPR and stress is a mechanism involved particularly in the hyperactivity/impulsivity dimension of ADHD, and that this is independent of comorbid internalizing problems. Further research into the neurobiological mechanisms underlying this interaction effect is warranted. En ligne : http://dx.doi.org/10.1111/jcpp.12240 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=243 White matter microstructure and developmental improvement of hyperactive/impulsive symptoms in attention-deficit/hyperactivity disorder / Winke FRANCX in Journal of Child Psychology and Psychiatry, 56-12 (December 2015)
[article]
Titre : White matter microstructure and developmental improvement of hyperactive/impulsive symptoms in attention-deficit/hyperactivity disorder Type de document : Texte imprimé et/ou numérique Auteurs : Winke FRANCX, Auteur ; Marcel P. ZWIERS, Auteur ; Maarten MENNES, Auteur ; Jaap OOSTERLAAN, Auteur ; Dirk J. HESLENFELD, Auteur ; Pieter J. HOEKSTRA, Auteur ; Catharina A. HARTMAN, Auteur ; Barbara FRANKE, Auteur ; Stephen V. FARAONE, Auteur ; Laurence O'DWYER, Auteur ; Jan K. BUITELAAR, Auteur Article en page(s) : p.1289-1297 Langues : Anglais (eng) Mots-clés : Attention-deficit/hyperactivity disorder hyperactivity/impulsivity white matter diffusion tensor imaging recovery development Index. décimale : PER Périodiques Résumé : Background A developmental improvement of symptoms in attention-deficit/hyperactivity disorder (ADHD) is frequently reported, but the underlying neurobiological substrate has not been identified. The aim of this study was to determine whether white matter microstructure is related to developmental improvement of ADHD symptoms. Methods A cross-sectional magnetic resonance imaging (MRI) analysis was embedded in a prospective follow-up of an adolescent cohort of ADHD and control subjects (NeuroIMAGE). Mean age at baseline was 11.9 years, mean interval of follow-up was 5.9 years. About 75.3% of the original cohort was retained successfully. Data of 101 participants with ADHD combined type at baseline and 40 healthy controls were analysed. ADHD symptoms were measured with semistructured, investigator-based interviews and Conners' questionnaires, on the basis of DSM-IV criteria. Fractional anisotropy (FA) and mean diffusivity (MD) indices of white matter microstructure were measured using whole brain diffusion tensor imaging at follow-up only. In a dimensional analysis FA and MD were related to change in ADHD symptoms. To link this analysis to DSM-IV diagnoses, a post hoc categorical group analysis was conducted comparing participants with persistent (n = 59) versus remittent (n = 42) ADHD and controls. Results Over time, participants with ADHD showed improvement mainly in hyperactive/impulsive symptoms. This improvement was associated with lower FA and higher MD values in the left corticospinal tract at follow-up. Findings of the dimensional and the categorical analysis strongly converged. Changes in inattentive symptoms over time were minimal and not related to white matter microstructure. Conclusions The corticospinal tract is important in the control of voluntary movements, suggesting the importance of the motor system in the persistence of hyperactive/impulsive symptoms. En ligne : http://dx.doi.org/10.1111/jcpp.12379 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=273
in Journal of Child Psychology and Psychiatry > 56-12 (December 2015) . - p.1289-1297[article] White matter microstructure and developmental improvement of hyperactive/impulsive symptoms in attention-deficit/hyperactivity disorder [Texte imprimé et/ou numérique] / Winke FRANCX, Auteur ; Marcel P. ZWIERS, Auteur ; Maarten MENNES, Auteur ; Jaap OOSTERLAAN, Auteur ; Dirk J. HESLENFELD, Auteur ; Pieter J. HOEKSTRA, Auteur ; Catharina A. HARTMAN, Auteur ; Barbara FRANKE, Auteur ; Stephen V. FARAONE, Auteur ; Laurence O'DWYER, Auteur ; Jan K. BUITELAAR, Auteur . - p.1289-1297.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 56-12 (December 2015) . - p.1289-1297
Mots-clés : Attention-deficit/hyperactivity disorder hyperactivity/impulsivity white matter diffusion tensor imaging recovery development Index. décimale : PER Périodiques Résumé : Background A developmental improvement of symptoms in attention-deficit/hyperactivity disorder (ADHD) is frequently reported, but the underlying neurobiological substrate has not been identified. The aim of this study was to determine whether white matter microstructure is related to developmental improvement of ADHD symptoms. Methods A cross-sectional magnetic resonance imaging (MRI) analysis was embedded in a prospective follow-up of an adolescent cohort of ADHD and control subjects (NeuroIMAGE). Mean age at baseline was 11.9 years, mean interval of follow-up was 5.9 years. About 75.3% of the original cohort was retained successfully. Data of 101 participants with ADHD combined type at baseline and 40 healthy controls were analysed. ADHD symptoms were measured with semistructured, investigator-based interviews and Conners' questionnaires, on the basis of DSM-IV criteria. Fractional anisotropy (FA) and mean diffusivity (MD) indices of white matter microstructure were measured using whole brain diffusion tensor imaging at follow-up only. In a dimensional analysis FA and MD were related to change in ADHD symptoms. To link this analysis to DSM-IV diagnoses, a post hoc categorical group analysis was conducted comparing participants with persistent (n = 59) versus remittent (n = 42) ADHD and controls. Results Over time, participants with ADHD showed improvement mainly in hyperactive/impulsive symptoms. This improvement was associated with lower FA and higher MD values in the left corticospinal tract at follow-up. Findings of the dimensional and the categorical analysis strongly converged. Changes in inattentive symptoms over time were minimal and not related to white matter microstructure. Conclusions The corticospinal tract is important in the control of voluntary movements, suggesting the importance of the motor system in the persistence of hyperactive/impulsive symptoms. En ligne : http://dx.doi.org/10.1111/jcpp.12379 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=273