LPHN3 and attention-deficit/hyperactivity disorder: interaction with maternal stress during pregnancy / Zia CHOUDHRY in Journal of Child Psychology and Psychiatry, 53-8 (August 2012)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 53-8 (August 2012) . - p.892-902 Titre : LPHN3 and attention-deficit/hyperactivity disorder: interaction with maternal stress during pregnancy Type de document : Texte imprimé et/ou numérique Auteurs : Zia CHOUDHRY, Auteur ; Sarojini M. SENGUPTA, Auteur ; Natalie GRIZENKO, Auteur ; Marie-Eve FORTIER, Auteur ; Geeta A. THAKUR, Auteur ; Johanne BELLINGHAM, Auteur ; Ridha JOOBER, Auteur Année de publication : 2012 Article en page(s) : p.892-902 Langues : Anglais (eng) Mots-clés : ADHD  LPHN3  maternal stress  environmental factors  GXE  genetic association Index. décimale : PER Périodiques Résumé : Background:  Attention-deficit/hyperactivity disorder (ADHD) is a heterogeneous behavioral disorder, complex both in etiology and clinical expression. Both genetic and environmental factors have been implicated, and it has been suggested that gene-environment interactions may play a pivotal role in the disorder. Recently, a significant association was reported between ADHD and LPHN3 (which codes for latrophilin 3), and replicated in independent samples. Methods:  We have examined the association between tag single nucleotide polymorphisms (SNPs) in LPHN3 within the region previously implicated in ADHD. Family based association tests (FBAT) were conducted (n = 380 families) with the categorical diagnosis of ADHD, behavioral and cognitive phenotypes related to ADHD, and response to treatment (given a fixed dose of methylphenidate, 0.5 mg/day). Stratified FBAT analyses, based on maternal smoking and stress during pregnancy, was conducted. Results:  Whereas limited association was observed in the total sample, highly significant interaction between four LPHN3 tag SNPs (rs6551665, rs1947274, rs6858066, rs2345039) and maternal stress during pregnancy was noted. Analysis conducted in the sub-group of mothers exposed to minimal stress during pregnancy showed significant associations with ADHD, behavioral and cognitive dimensions related to ADHD, as well as treatment response. Although extensive association was observed with the candidate SNPs, the findings are partially inconsistent with previously published results with the opposite alleles over-transmitted in these studies. Conclusions:  These results provide evidence for the interaction between a genetic and environmental factor independently shown to be associated with ADHD. If confirmed in independent large studies, they may present a step forward in unraveling the complex etiology of ADHD. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2012.02551.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=177 [article] LPHN3 and attention-deficit/hyperactivity disorder: interaction with maternal stress during pregnancy [Texte imprimé et/ou numérique] / Zia CHOUDHRY, Auteur ; Sarojini M. SENGUPTA, Auteur ; Natalie GRIZENKO, Auteur ; Marie-Eve FORTIER, Auteur ; Geeta A. THAKUR, Auteur ; Johanne BELLINGHAM, Auteur ; Ridha JOOBER, Auteur . - 2012 . - p.892-902. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 53-8 (August 2012) . - p.892-902 Mots-clés : ADHD  LPHN3  maternal stress  environmental factors  GXE  genetic association Index. décimale : PER Périodiques Résumé : Background:  Attention-deficit/hyperactivity disorder (ADHD) is a heterogeneous behavioral disorder, complex both in etiology and clinical expression. Both genetic and environmental factors have been implicated, and it has been suggested that gene-environment interactions may play a pivotal role in the disorder. Recently, a significant association was reported between ADHD and LPHN3 (which codes for latrophilin 3), and replicated in independent samples. Methods:  We have examined the association between tag single nucleotide polymorphisms (SNPs) in LPHN3 within the region previously implicated in ADHD. Family based association tests (FBAT) were conducted (n = 380 families) with the categorical diagnosis of ADHD, behavioral and cognitive phenotypes related to ADHD, and response to treatment (given a fixed dose of methylphenidate, 0.5 mg/day). Stratified FBAT analyses, based on maternal smoking and stress during pregnancy, was conducted. Results:  Whereas limited association was observed in the total sample, highly significant interaction between four LPHN3 tag SNPs (rs6551665, rs1947274, rs6858066, rs2345039) and maternal stress during pregnancy was noted. Analysis conducted in the sub-group of mothers exposed to minimal stress during pregnancy showed significant associations with ADHD, behavioral and cognitive dimensions related to ADHD, as well as treatment response. Although extensive association was observed with the candidate SNPs, the findings are partially inconsistent with previously published results with the opposite alleles over-transmitted in these studies. Conclusions:  These results provide evidence for the interaction between a genetic and environmental factor independently shown to be associated with ADHD. If confirmed in independent large studies, they may present a step forward in unraveling the complex etiology of ADHD. En ligne : http://dx.doi.org/10.1111/j.1469-7610.2012.02551.x Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=177

Parental psychopathology in families of children with attention-deficit/hyperactivity disorder and exposed to maternal smoking during pregnancy / Sarojini M. SENGUPTA in Journal of Child Psychology and Psychiatry, 56-2 (February 2015)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 56-2 (February 2015) . - p.122-129 Titre : Parental psychopathology in families of children with attention-deficit/hyperactivity disorder and exposed to maternal smoking during pregnancy Type de document : Texte imprimé et/ou numérique Auteurs : Sarojini M. SENGUPTA, Auteur ; Marie-Eve FORTIER, Auteur ; Geeta A. THAKUR, Auteur ; Venkat BHAT, Auteur ; Natalie GRIZENKO, Auteur ; Ridha JOOBER, Auteur Article en page(s) : p.122-129 Langues : Anglais (eng) Mots-clés : Attention-deficit/hyperactivity disorder  behavior problems  comorbidity  family history  smoking Index. décimale : PER Périodiques Résumé : Background Both genetic and environmental factors have been implicated in the etiology of attention-deficit/hyperactivity disorder (ADHD). We had previously suggested that exposure to maternal smoking during pregnancy (MSDP) may be a valid basis for delineating a distinct subtype of ADHD, where children exposed to MSDP present with a more severe clinical picture. Here, we examine the psychopathology of parents in this group, to better understand the etiology of ADHD. Methods Using the Family Interview for Genetic Studies in a sample of 514 families of children with ADHD, we collected data pertaining to lifetime parental psychopathology. Families were stratified based on maternal smoking during the complete gestational period. The frequency of different disorders was compared using the ?2 statistic. Results In the group where mothers smoked during pregnancy, both parents were significantly more likely to have antisocial personality disorder, and problems with alcohol and drug abuse. Mothers had a significantly higher frequency of major depressive disorder (MDD), while fathers showed a trend for both MDD and bipolar disorder. Conclusions Based on the pattern of psychopathology in parents of children exposed to MSDP, as well as earlier reports of the severe clinical, behavioral, and cognitive phenotype in these children, combined with the large body of epidemiological evidence, we propose that these children present a distinct subtype of ADHD with comorbid conduct disorder. Furthermore, we propose that MSDP may be a proxy measure to help delineate this subtype. En ligne : http://dx.doi.org/10.1111/jcpp.12286 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=259 [article] Parental psychopathology in families of children with attention-deficit/hyperactivity disorder and exposed to maternal smoking during pregnancy [Texte imprimé et/ou numérique] / Sarojini M. SENGUPTA, Auteur ; Marie-Eve FORTIER, Auteur ; Geeta A. THAKUR, Auteur ; Venkat BHAT, Auteur ; Natalie GRIZENKO, Auteur ; Ridha JOOBER, Auteur . - p.122-129. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 56-2 (February 2015) . - p.122-129 Mots-clés : Attention-deficit/hyperactivity disorder  behavior problems  comorbidity  family history  smoking Index. décimale : PER Périodiques Résumé : Background Both genetic and environmental factors have been implicated in the etiology of attention-deficit/hyperactivity disorder (ADHD). We had previously suggested that exposure to maternal smoking during pregnancy (MSDP) may be a valid basis for delineating a distinct subtype of ADHD, where children exposed to MSDP present with a more severe clinical picture. Here, we examine the psychopathology of parents in this group, to better understand the etiology of ADHD. Methods Using the Family Interview for Genetic Studies in a sample of 514 families of children with ADHD, we collected data pertaining to lifetime parental psychopathology. Families were stratified based on maternal smoking during the complete gestational period. The frequency of different disorders was compared using the ?2 statistic. Results In the group where mothers smoked during pregnancy, both parents were significantly more likely to have antisocial personality disorder, and problems with alcohol and drug abuse. Mothers had a significantly higher frequency of major depressive disorder (MDD), while fathers showed a trend for both MDD and bipolar disorder. Conclusions Based on the pattern of psychopathology in parents of children exposed to MSDP, as well as earlier reports of the severe clinical, behavioral, and cognitive phenotype in these children, combined with the large body of epidemiological evidence, we propose that these children present a distinct subtype of ADHD with comorbid conduct disorder. Furthermore, we propose that MSDP may be a proxy measure to help delineate this subtype. En ligne : http://dx.doi.org/10.1111/jcpp.12286 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=259

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