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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 Comorbid psychiatric conditions as mediators to predict later social adjustment in youths with autism spectrum disorder / Huey-Ling CHIANG in Journal of Child Psychology and Psychiatry, 57-1 (January 2016)
[article]
Titre : Comorbid psychiatric conditions as mediators to predict later social adjustment in youths with autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Huey-Ling CHIANG, Auteur ; Susan Shur-Fen GAU, Auteur Article en page(s) : p.103-111 Langues : Anglais (eng) Mots-clés : Autism spectrum disorder inattention hyperactivity/impulsivity anxiety depression oppositional mediator social adjustment Index. décimale : PER Périodiques Résumé : Background Individuals with autism spectrum disorder (ASD) experience long-term social impairment and their comorbid psychiatric conditions negatively impact adaptive functioning. The aims of the study are to investigate whether comorbid psychopathologies, such as anxiety/depression, inattention, hyperactivity/impulsivity, and oppositional behaviors, mediated the link between autistic symptoms and social maladjustment. Method One hundred and twenty-four youths diagnosed with a clinical diagnosis of DSM-IV ASD (mean age, 10.6 ± 3.3 years) participated in this longitudinal study. They were assessed using semistructured diagnostic interviews on ASD and other psychiatric conditions at recruitment. Follow-up interviews took place approximately 3 years later (37.59 ± 15 months) while the parents reported to the Social Adjustment Inventory for Children and Adolescents on their children's social adjustment. Mediation models were used to examine the mediating effect of comorbid psychopathologies on social adjustment. Results Youths with ASD had worse school, peer, and home functions than controls at follow-up assessment. In general, comorbid psychiatric conditions mediated the link between autistic symptoms and different domains of social adjustment, independent of age, sex, and full-scale IQ. Additionally, we found specific mediating effects of anxiety/depression and inattention on school functions; anxiety/depression on peer relationships; and oppositional behaviors on home behaviors. Conclusion Early comorbid psychopathologies may further impair later social adjustment in youths with ASD and an early identification and intervention of these comorbid conditions are suggested. En ligne : http://dx.doi.org/10.1111/jcpp.12450 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=273
in Journal of Child Psychology and Psychiatry > 57-1 (January 2016) . - p.103-111[article] Comorbid psychiatric conditions as mediators to predict later social adjustment in youths with autism spectrum disorder [Texte imprimé et/ou numérique] / Huey-Ling CHIANG, Auteur ; Susan Shur-Fen GAU, Auteur . - p.103-111.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 57-1 (January 2016) . - p.103-111
Mots-clés : Autism spectrum disorder inattention hyperactivity/impulsivity anxiety depression oppositional mediator social adjustment Index. décimale : PER Périodiques Résumé : Background Individuals with autism spectrum disorder (ASD) experience long-term social impairment and their comorbid psychiatric conditions negatively impact adaptive functioning. The aims of the study are to investigate whether comorbid psychopathologies, such as anxiety/depression, inattention, hyperactivity/impulsivity, and oppositional behaviors, mediated the link between autistic symptoms and social maladjustment. Method One hundred and twenty-four youths diagnosed with a clinical diagnosis of DSM-IV ASD (mean age, 10.6 ± 3.3 years) participated in this longitudinal study. They were assessed using semistructured diagnostic interviews on ASD and other psychiatric conditions at recruitment. Follow-up interviews took place approximately 3 years later (37.59 ± 15 months) while the parents reported to the Social Adjustment Inventory for Children and Adolescents on their children's social adjustment. Mediation models were used to examine the mediating effect of comorbid psychopathologies on social adjustment. Results Youths with ASD had worse school, peer, and home functions than controls at follow-up assessment. In general, comorbid psychiatric conditions mediated the link between autistic symptoms and different domains of social adjustment, independent of age, sex, and full-scale IQ. Additionally, we found specific mediating effects of anxiety/depression and inattention on school functions; anxiety/depression on peer relationships; and oppositional behaviors on home behaviors. Conclusion Early comorbid psychopathologies may further impair later social adjustment in youths with ASD and an early identification and intervention of these comorbid conditions are suggested. En ligne : http://dx.doi.org/10.1111/jcpp.12450 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=273 Phenotypic and genetic associations between reading comprehension, decoding skills, and ADHD dimensions: evidence from two population-based studies / Vickie PLOURDE in Journal of Child Psychology and Psychiatry, 56-10 (October 2015)
[article]
Titre : Phenotypic and genetic associations between reading comprehension, decoding skills, and ADHD dimensions: evidence from two population-based studies Type de document : Texte imprimé et/ou numérique Auteurs : Vickie PLOURDE, Auteur ; Michel BOIVIN, Auteur ; Nadine FORGET-DUBOIS, Auteur ; Mara BRENDGEN, Auteur ; Frank VITARO, Auteur ; Cecilia MARINO, Auteur ; Richard T. TREMBLAY, Auteur ; Ginette DIONNE, Auteur Article en page(s) : p.1074-1082 Langues : Anglais (eng) Mots-clés : Reading decoding comprehension inattention hyperactivity/impulsivity population-based studies Index. décimale : PER Périodiques Résumé : Background The phenotypic and genetic associations between decoding skills and ADHD dimensions have been documented but less is known about the association with reading comprehension. The aim of the study is to document the phenotypic and genetic associations between reading comprehension and ADHD dimensions of inattention and hyperactivity/impulsivity in early schooling and compare them to those with decoding skills. Methods Data were collected in two population-based samples of twins (Quebec Newborn Twin Study – QNTS) and singletons (Quebec Longitudinal Study of Child Development – QLSCD) totaling ? 2300 children. Reading was assessed with normed measures in second or third grade. Teachers assessed ADHD dimensions in kindergarten and first grade. Results Both decoding and reading comprehension were correlated with ADHD dimensions in a similar way: associations with inattention remained after controlling for the other ADHD dimension, behavior disorder symptoms and nonverbal abilities, whereas associations with hyperactivity/impulsivity did not. Genetic modeling showed that decoding and comprehension largely shared the same genetic etiology at this age and that their associations with inattention were mostly explained by shared genetic influences. Conclusion Both reading comprehension and decoding are uniquely associated with inattention through a shared genetic etiology. En ligne : http://dx.doi.org/10.1111/jcpp.12394 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=269
in Journal of Child Psychology and Psychiatry > 56-10 (October 2015) . - p.1074-1082[article] Phenotypic and genetic associations between reading comprehension, decoding skills, and ADHD dimensions: evidence from two population-based studies [Texte imprimé et/ou numérique] / Vickie PLOURDE, Auteur ; Michel BOIVIN, Auteur ; Nadine FORGET-DUBOIS, Auteur ; Mara BRENDGEN, Auteur ; Frank VITARO, Auteur ; Cecilia MARINO, Auteur ; Richard T. TREMBLAY, Auteur ; Ginette DIONNE, Auteur . - p.1074-1082.
Langues : Anglais (eng)
in Journal of Child Psychology and Psychiatry > 56-10 (October 2015) . - p.1074-1082
Mots-clés : Reading decoding comprehension inattention hyperactivity/impulsivity population-based studies Index. décimale : PER Périodiques Résumé : Background The phenotypic and genetic associations between decoding skills and ADHD dimensions have been documented but less is known about the association with reading comprehension. The aim of the study is to document the phenotypic and genetic associations between reading comprehension and ADHD dimensions of inattention and hyperactivity/impulsivity in early schooling and compare them to those with decoding skills. Methods Data were collected in two population-based samples of twins (Quebec Newborn Twin Study – QNTS) and singletons (Quebec Longitudinal Study of Child Development – QLSCD) totaling ? 2300 children. Reading was assessed with normed measures in second or third grade. Teachers assessed ADHD dimensions in kindergarten and first grade. Results Both decoding and reading comprehension were correlated with ADHD dimensions in a similar way: associations with inattention remained after controlling for the other ADHD dimension, behavior disorder symptoms and nonverbal abilities, whereas associations with hyperactivity/impulsivity did not. Genetic modeling showed that decoding and comprehension largely shared the same genetic etiology at this age and that their associations with inattention were mostly explained by shared genetic influences. Conclusion Both reading comprehension and decoding are uniquely associated with inattention through a shared genetic etiology. En ligne : http://dx.doi.org/10.1111/jcpp.12394 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=269