Motor control in children with ADHD and non-affected siblings: deficits most pronounced using the left hand / Nanda N. ROMMELSE in Journal of Child Psychology and Psychiatry, 48-11 (November 2007)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 48-11 (November 2007) . - p.1071–1079 Titre : Motor control in children with ADHD and non-affected siblings: deficits most pronounced using the left hand Type de document : Texte imprimé et/ou numérique Auteurs : Nanda N. ROMMELSE, Auteur ; Joseph A. SERGEANT, Auteur ; Leo M. J. DE SONNEVILLE, Auteur ; Jan K. BUITELAAR, Auteur ; Jaap OOSTERLAAN, Auteur ; Marieke E. ALTINK, Auteur ; Cathelijne J.M. BUSCHGENS, Auteur Année de publication : 2007 Article en page(s) : p.1071–1079 Langues : Anglais (eng) Mots-clés : ADHD non-affected-sibling motor-control endophenotype Index. décimale : PER Périodiques Résumé : Attention-deficit/hyperactivity disorder (ADHD) is strongly influenced by heritability. Identifying heritable vulnerability traits (endophenotypes) that mark a relatively high risk of developing the disorder can contribute to the identification of risk genes. A fruitful area for the search for such endophenotypes may be motor control in children with ADHD, since the disorder is frequently accompanied by motor problems. Method: The current study used a large sample of 350 children with ADHD, 195 non-affected siblings and 271 normal controls aged 5–19 years. Children were administered two computerised motor control tasks in which they had to trace a path between two circles (Tracking task) and follow a randomly moving target (Pursuit task). Both tasks were performed with both the right and the left hand. Results: Children with ADHD were less precise and stable than controls. Non-affected siblings also deviated from controls, but only on the Tracking task. Group differences were modulated by the use of the right versus the left hand: no group differences emerged when the right hand was used, yet group differences did emerge when the left hand was used. Performance on both tasks was significantly familial. Conclusions: Imprecision and instability of movements in children with ADHD and in their non-affected siblings as measured by the Tracking task might be suitable endophenotypic candidates: these deficits are familially present in children having ADHD as well as in their non-affected siblings. Motor performance might be best assessed in children using their left hand, because motor control deficits are most pronounced using the left hand. This might relate to right hemispheric brain pathology in children with ADHD (and possibly in their non-affected siblings) that is related to the control of the left hand and/or relate to differential effects of daily life practice on both hands, which may be smaller on the left hand. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2007.01781.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=297 [article] Motor control in children with ADHD and non-affected siblings: deficits most pronounced using the left hand [Texte imprimé et/ou numérique] / Nanda N. ROMMELSE, Auteur ; Joseph A. SERGEANT, Auteur ; Leo M. J. DE SONNEVILLE, Auteur ; Jan K. BUITELAAR, Auteur ; Jaap OOSTERLAAN, Auteur ; Marieke E. ALTINK, Auteur ; Cathelijne J.M. BUSCHGENS, Auteur . - 2007 . - p.1071–1079. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 48-11 (November 2007) . - p.1071–1079 Mots-clés : ADHD non-affected-sibling motor-control endophenotype Index. décimale : PER Périodiques Résumé : Attention-deficit/hyperactivity disorder (ADHD) is strongly influenced by heritability. Identifying heritable vulnerability traits (endophenotypes) that mark a relatively high risk of developing the disorder can contribute to the identification of risk genes. A fruitful area for the search for such endophenotypes may be motor control in children with ADHD, since the disorder is frequently accompanied by motor problems. Method: The current study used a large sample of 350 children with ADHD, 195 non-affected siblings and 271 normal controls aged 5–19 years. Children were administered two computerised motor control tasks in which they had to trace a path between two circles (Tracking task) and follow a randomly moving target (Pursuit task). Both tasks were performed with both the right and the left hand. Results: Children with ADHD were less precise and stable than controls. Non-affected siblings also deviated from controls, but only on the Tracking task. Group differences were modulated by the use of the right versus the left hand: no group differences emerged when the right hand was used, yet group differences did emerge when the left hand was used. Performance on both tasks was significantly familial. Conclusions: Imprecision and instability of movements in children with ADHD and in their non-affected siblings as measured by the Tracking task might be suitable endophenotypic candidates: these deficits are familially present in children having ADHD as well as in their non-affected siblings. Motor performance might be best assessed in children using their left hand, because motor control deficits are most pronounced using the left hand. This might relate to right hemispheric brain pathology in children with ADHD (and possibly in their non-affected siblings) that is related to the control of the left hand and/or relate to differential effects of daily life practice on both hands, which may be smaller on the left hand. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2007.01781.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=297

Perinatal risk factors interacting with catechol O-methyltransferase and the serotonin transporter gene predict ASD symptoms in children with ADHD / Judith NIJMEIJER in Journal of Child Psychology and Psychiatry, 51-11 (November 2010)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 51-11 (November 2010) . - p.1242-1250 Titre : Perinatal risk factors interacting with catechol O-methyltransferase and the serotonin transporter gene predict ASD symptoms in children with ADHD Type de document : Texte imprimé et/ou numérique Auteurs : Judith NIJMEIJER, Auteur ; Ruud B. MINDERAA, Auteur ; Ellen A. FLIERS, Auteur ; Barbara FRANKE, Auteur ; Cathelijne J.M. BUSCHGENS, Auteur ; Marieke E. ALTINK, Auteur ; Nanda N. ROMMELSE, Auteur ; Jan K. BUITELAAR, Auteur ; Catharina A. HARTMAN, Auteur ; Frank C. VERHULST, Auteur ; Johan ORMEL, Auteur ; Joseph A. SERGEANT, Auteur ; Pieter J. HOEKSTRA, Auteur Année de publication : 2010 Article en page(s) : p.1242-1250 Langues : Anglais (eng) Mots-clés : Attention-deficit/hyperactivity-disorder autism-spectrum-disorder gene-environment 5-HTT COMT Index. décimale : PER Périodiques Résumé : Background:  Symptoms of autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder (ADHD) often co-occur. Given the previously found familiality of ASD symptoms in children with ADHD, addressing these symptoms may be useful for genetic association studies, especially for candidate gene findings that have not been consistently replicated for ADHD. Methods:  We studied the association of the catechol O-methyltransferase (COMT) Val158Met polymorphism and the serotonin transporter (SLC6A4/SERT/5-HTT) 5-HTTLPR insertion/deletion polymorphism with ASD symptoms in children with ADHD, and whether these polymorphisms would interact with pre- and perinatal risk factors, i.e., maternal smoking during pregnancy and low birth weight. Analyses were performed using linear regression in 207 Dutch participants with combined type ADHD of the International Multicenter ADHD Genetics (IMAGE) study, and repeated in an independent ADHD sample (n = 439) selected from the TRracking Adolescents’ Individual Lives Survey (TRAILS). Dependent variables were the total and subscale scores of the Children’s Social Behavior Questionnaire (CSBQ). Results:  No significant main effects of COMT Val158Met, 5-HTTLPR, maternal smoking during pregnancy and low birth weight on ASD symptoms were found. However, the COMT Val/Val genotype interacted with maternal smoking during pregnancy in increasing stereotyped behavior in the IMAGE sample (p = .008); this interaction reached significance in the TRAILS sample after correction for confounders (p = .02). In the IMAGE sample, the 5-HTTLPR S/S genotype interacted with maternal smoking during pregnancy, increasing problems in social interaction (p = .02), and also interacted with low birth weight, increasing rigid behavior (p = .03). Findings for 5-HTTLPR in the TRAILS sample were similar, albeit for related CSBQ subscales. Conclusions:  These findings suggest gene–environment interaction effects on ASD symptoms in children with ADHD. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2010.02277.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=110 [article] Perinatal risk factors interacting with catechol O-methyltransferase and the serotonin transporter gene predict ASD symptoms in children with ADHD [Texte imprimé et/ou numérique] / Judith NIJMEIJER, Auteur ; Ruud B. MINDERAA, Auteur ; Ellen A. FLIERS, Auteur ; Barbara FRANKE, Auteur ; Cathelijne J.M. BUSCHGENS, Auteur ; Marieke E. ALTINK, Auteur ; Nanda N. ROMMELSE, Auteur ; Jan K. BUITELAAR, Auteur ; Catharina A. HARTMAN, Auteur ; Frank C. VERHULST, Auteur ; Johan ORMEL, Auteur ; Joseph A. SERGEANT, Auteur ; Pieter J. HOEKSTRA, Auteur . - 2010 . - p.1242-1250. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 51-11 (November 2010) . - p.1242-1250 Mots-clés : Attention-deficit/hyperactivity-disorder autism-spectrum-disorder gene-environment 5-HTT COMT Index. décimale : PER Périodiques Résumé : Background:  Symptoms of autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder (ADHD) often co-occur. Given the previously found familiality of ASD symptoms in children with ADHD, addressing these symptoms may be useful for genetic association studies, especially for candidate gene findings that have not been consistently replicated for ADHD. Methods:  We studied the association of the catechol O-methyltransferase (COMT) Val158Met polymorphism and the serotonin transporter (SLC6A4/SERT/5-HTT) 5-HTTLPR insertion/deletion polymorphism with ASD symptoms in children with ADHD, and whether these polymorphisms would interact with pre- and perinatal risk factors, i.e., maternal smoking during pregnancy and low birth weight. Analyses were performed using linear regression in 207 Dutch participants with combined type ADHD of the International Multicenter ADHD Genetics (IMAGE) study, and repeated in an independent ADHD sample (n = 439) selected from the TRracking Adolescents’ Individual Lives Survey (TRAILS). Dependent variables were the total and subscale scores of the Children’s Social Behavior Questionnaire (CSBQ). Results:  No significant main effects of COMT Val158Met, 5-HTTLPR, maternal smoking during pregnancy and low birth weight on ASD symptoms were found. However, the COMT Val/Val genotype interacted with maternal smoking during pregnancy in increasing stereotyped behavior in the IMAGE sample (p = .008); this interaction reached significance in the TRAILS sample after correction for confounders (p = .02). In the IMAGE sample, the 5-HTTLPR S/S genotype interacted with maternal smoking during pregnancy, increasing problems in social interaction (p = .02), and also interacted with low birth weight, increasing rigid behavior (p = .03). Findings for 5-HTTLPR in the TRAILS sample were similar, albeit for related CSBQ subscales. Conclusions:  These findings suggest gene–environment interaction effects on ASD symptoms in children with ADHD. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2010.02277.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=110

Quantitative Linkage for Autism Spectrum Disorders Symptoms in Attention-Deficit/Hyperactivity Disorder: Significant Locus on Chromosome 7q11 / Judith S. NIJMEIJER in Journal of Autism and Developmental Disorders, 44-7 (July 2014)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 44-7 (July 2014) . - p.1671-1680 Titre : Quantitative Linkage for Autism Spectrum Disorders Symptoms in Attention-Deficit/Hyperactivity Disorder: Significant Locus on Chromosome 7q11 Type de document : Texte imprimé et/ou numérique Auteurs : Judith S. NIJMEIJER, Auteur ; Alejandro ARIAS-VASQUEZ, Auteur ; Nanda N. ROMMELSE, Auteur ; Marieke E. ALTINK, Auteur ; Cathelijne J.M. BUSCHGENS, Auteur ; Ellen A. FLIERS, Auteur ; Barbara FRANKE, Auteur ; Ruud B. MINDERAA, Auteur ; Joseph A. SERGEANT, Auteur ; Jan K. BUITELAAR, Auteur ; Pieter J. HOEKSTRA, Auteur ; Catharina A. HARTMAN, Auteur Article en page(s) : p.1671-1680 Langues : Anglais (eng) Mots-clés : ASD  ADHD  Comorbidity  Genetics Index. décimale : PER Périodiques Résumé : We studied 261 ADHD probands and 354 of their siblings to assess quantitative trait loci associated with autism spectrum disorder symptoms (as measured by the Children’s Social Behavior Questionnaire (CSBQ)) using a genome-wide linkage approach, followed by locus-wide association analysis. A genome-wide significant locus for the CSBQ subscale addressing social interaction was found on chromosome 7q11, with suggestive signals supporting this locus on three other CSBQ subscales. We identified two other suggestive loci for the CSBQ total scale and individual subscales on chromosomes 4q35 and 7p12. Fine-mapping the significantly linked locus resulted in interesting candidate genes, although their association was not significant after permutation testing. En ligne : http://dx.doi.org/10.1007/s10803-014-2039-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=236 [article] Quantitative Linkage for Autism Spectrum Disorders Symptoms in Attention-Deficit/Hyperactivity Disorder: Significant Locus on Chromosome 7q11 [Texte imprimé et/ou numérique] / Judith S. NIJMEIJER, Auteur ; Alejandro ARIAS-VASQUEZ, Auteur ; Nanda N. ROMMELSE, Auteur ; Marieke E. ALTINK, Auteur ; Cathelijne J.M. BUSCHGENS, Auteur ; Ellen A. FLIERS, Auteur ; Barbara FRANKE, Auteur ; Ruud B. MINDERAA, Auteur ; Joseph A. SERGEANT, Auteur ; Jan K. BUITELAAR, Auteur ; Pieter J. HOEKSTRA, Auteur ; Catharina A. HARTMAN, Auteur . - p.1671-1680. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 44-7 (July 2014) . - p.1671-1680 Mots-clés : ASD  ADHD  Comorbidity  Genetics Index. décimale : PER Périodiques Résumé : We studied 261 ADHD probands and 354 of their siblings to assess quantitative trait loci associated with autism spectrum disorder symptoms (as measured by the Children’s Social Behavior Questionnaire (CSBQ)) using a genome-wide linkage approach, followed by locus-wide association analysis. A genome-wide significant locus for the CSBQ subscale addressing social interaction was found on chromosome 7q11, with suggestive signals supporting this locus on three other CSBQ subscales. We identified two other suggestive loci for the CSBQ total scale and individual subscales on chromosomes 4q35 and 7p12. Fine-mapping the significantly linked locus resulted in interesting candidate genes, although their association was not significant after permutation testing. En ligne : http://dx.doi.org/10.1007/s10803-014-2039-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=236

The dopamine receptor D4 7-repeat allele and prenatal smoking in ADHD-affected children and their unaffected siblings: no gene–environment interaction / Marieke E. ALTINK in Journal of Child Psychology and Psychiatry, 49-10 (October 2008)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 49-10 (October 2008) . - p.1053-1060 Titre : The dopamine receptor D4 7-repeat allele and prenatal smoking in ADHD-affected children and their unaffected siblings: no gene–environment interaction Type de document : Texte imprimé et/ou numérique Auteurs : Marieke E. ALTINK, Auteur ; Joseph A. SERGEANT, Auteur ; Wai CHEN, Auteur ; Keeley-Joanne BROOKES, Auteur ; Richard ANNEY, Auteur ; Ellen A. FLIERS, Auteur ; Dorine I.E. SLAATS–WILLEMSE, Auteur ; Barbara FRANKE, Auteur ; Alejandro ARIAS-VASQUEZ, Auteur ; Margaret J. THOMPSON, Auteur ; Michael GILL, Auteur ; Cathelijne J.M. BUSCHGENS, Auteur ; Nanda N. ROMMELSE, Auteur ; Jan K. BUITELAAR, Auteur ; Philip ASHERSON, Auteur ; Stephen V. FARAONE, Auteur ; Edmund J. S. SONUGA-BARKE, Auteur ; Aisling MULLIGAN, Auteur Année de publication : 2008 Article en page(s) : p.1053-1060 Langues : Anglais (eng) Mots-clés : Dopamine-receptor-D4-gene attention-deficit-hyperactivity-disorder-(ADHD) maternal-smoking-during-pregnancy gene-by-environment-interaction Index. décimale : PER Périodiques Résumé : Background: The dopamine receptor D4 (DRD4) 7-repeat allele and maternal smoking during pregnancy are both considered as risk factors in the aetiology of attention deficit hyperactivity disorder (ADHD), but few studies have been conducted on their interactive effects in causing ADHD. The purpose of this study is to examine the gene by environment (G×E) interaction of the DRD4 7-repeat allele and smoking during pregnancy on ADHD and oppositional behavior in families from the International Multicenter ADHD Genetics project; and further, to test the hypothesis that the direction of effect of the DRD4 7-repeat allele differs between ADHD affected and unaffected children. Methods: Linear mixed models were used to assess main and interactive effects of the DRD4 7-repeat allele and smoking during pregnancy in 539 ADHD-affected children and their 407 unaffected siblings, aged 6–17 years. Results: There was some evidence pointing to differential effects of the DRD4 7-repeat allele on ADHD and oppositional symptoms in the affected (fewer symptoms) and unaffected children (increasing ADHD symptoms of teacher ratings). Affected children were more often exposed to prenatal smoking than unaffected children. There were limited main effects of prenatal smoking on severity of symptoms. Given the number of tests performed, no indication was found for G×E interactions. Conclusion: Despite the large sample size, no G×E interactions were found. The impact of the DRD4 7-repeat allele might differ, depending on affected status and rater. This finding is discussed in terms of differences in the activity of the dopaminergic system and of different genes involved in rater-specific behaviors. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2008.01998.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=606 [article] The dopamine receptor D4 7-repeat allele and prenatal smoking in ADHD-affected children and their unaffected siblings: no gene–environment interaction [Texte imprimé et/ou numérique] / Marieke E. ALTINK, Auteur ; Joseph A. SERGEANT, Auteur ; Wai CHEN, Auteur ; Keeley-Joanne BROOKES, Auteur ; Richard ANNEY, Auteur ; Ellen A. FLIERS, Auteur ; Dorine I.E. SLAATS–WILLEMSE, Auteur ; Barbara FRANKE, Auteur ; Alejandro ARIAS-VASQUEZ, Auteur ; Margaret J. THOMPSON, Auteur ; Michael GILL, Auteur ; Cathelijne J.M. BUSCHGENS, Auteur ; Nanda N. ROMMELSE, Auteur ; Jan K. BUITELAAR, Auteur ; Philip ASHERSON, Auteur ; Stephen V. FARAONE, Auteur ; Edmund J. S. SONUGA-BARKE, Auteur ; Aisling MULLIGAN, Auteur . - 2008 . - p.1053-1060. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 49-10 (October 2008) . - p.1053-1060 Mots-clés : Dopamine-receptor-D4-gene attention-deficit-hyperactivity-disorder-(ADHD) maternal-smoking-during-pregnancy gene-by-environment-interaction Index. décimale : PER Périodiques Résumé : Background: The dopamine receptor D4 (DRD4) 7-repeat allele and maternal smoking during pregnancy are both considered as risk factors in the aetiology of attention deficit hyperactivity disorder (ADHD), but few studies have been conducted on their interactive effects in causing ADHD. The purpose of this study is to examine the gene by environment (G×E) interaction of the DRD4 7-repeat allele and smoking during pregnancy on ADHD and oppositional behavior in families from the International Multicenter ADHD Genetics project; and further, to test the hypothesis that the direction of effect of the DRD4 7-repeat allele differs between ADHD affected and unaffected children. Methods: Linear mixed models were used to assess main and interactive effects of the DRD4 7-repeat allele and smoking during pregnancy in 539 ADHD-affected children and their 407 unaffected siblings, aged 6–17 years. Results: There was some evidence pointing to differential effects of the DRD4 7-repeat allele on ADHD and oppositional symptoms in the affected (fewer symptoms) and unaffected children (increasing ADHD symptoms of teacher ratings). Affected children were more often exposed to prenatal smoking than unaffected children. There were limited main effects of prenatal smoking on severity of symptoms. Given the number of tests performed, no indication was found for G×E interactions. Conclusion: Despite the large sample size, no G×E interactions were found. The impact of the DRD4 7-repeat allele might differ, depending on affected status and rater. This finding is discussed in terms of differences in the activity of the dopaminergic system and of different genes involved in rater-specific behaviors. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2008.01998.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=606

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