Gene–environment interaction in externalizing problems among adolescents: evidence from the Pelotas 1993 Birth Cohort Study / Christian KIELING in Journal of Child Psychology and Psychiatry, 54-3 (March 2013)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 54-3 (March 2013) . - p.298-304 Titre : Gene–environment interaction in externalizing problems among adolescents: evidence from the Pelotas 1993 Birth Cohort Study Type de document : Texte imprimé et/ou numérique Auteurs : Christian KIELING, Auteur ; Mara H. HUTZ, Auteur ; Júlia P. GENRO, Auteur ; Guilherme V. POLANCZYK, Auteur ; Luciana ANSELMI, Auteur ; Suzi CAMEY, Auteur ; Pedro C. HALLAL, Auteur ; Fernando C. BARROS, Auteur ; Cesar G. VICTORA, Auteur ; Ana Maria B. MENEZES, Auteur ; Luis Augusto ROHDE, Auteur Article en page(s) : p.298-304 Mots-clés : Gene–environment interaction  DAT1  maternal smoking  MAOA  childhood maltreatment  externalizing Index. décimale : PER Périodiques Résumé : Background: The study of gene–environment interactions (G × E) is one of the most promising strategies to uncover the origins of mental disorders. Replication of initial findings, however, is essential because there is a strong possibility of publication bias in the literature. In addition, there is a scarcity of research on the topic originated from low- and middle-income countries (LMIC). The aim of this study was to replicate G × E hypotheses for externalizing problems among adolescents in a middle-income country. Methods: As part of the Pelotas 1993 Birth Cohort Study, 5,249 children were enrolled at birth and followed up to the age of 15 years, with an 85.7% retention rate. We sought an interaction between the homozygosity of the 10-repeat allele at the dopamine transporter (DAT1) gene and prenatal maternal smoking in the development of hyperactivity problems during adolescence assessed by the Strengths and Difficulties Questionnaire. We also tested for an interaction between the uVNTR polymorphism at the monoamine oxidase A (MAOA) and the experience of childhood maltreatment in the occurrence of conduct problems among adolescent boys. Results: Although there was a clear association between prenatal maternal smoking and hyperactivity scores in adolescence (p 0.001), no main genetic or interaction effects for the DAT1 gene were detected. Similarly, childhood maltreatment showed to be associated with conduct problems among boys (p 0.001), with no observable main genetic or interaction effects for the MAOA gene. Conclusions: In the largest mental health G × E study performed in a LMIC to date, we did not replicate previous positive findings from the literature. Despite the presence of main environmental effects, there was no evidence of effect modification by genotype status. Additional replication efforts to measure G × E are needed to better understand the origins of mental health and illness, especially in LMIC. En ligne : http://dx.doi.org/10.1111/jcpp.12022 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=191 [article] Gene–environment interaction in externalizing problems among adolescents: evidence from the Pelotas 1993 Birth Cohort Study [Texte imprimé et/ou numérique] / Christian KIELING, Auteur ; Mara H. HUTZ, Auteur ; Júlia P. GENRO, Auteur ; Guilherme V. POLANCZYK, Auteur ; Luciana ANSELMI, Auteur ; Suzi CAMEY, Auteur ; Pedro C. HALLAL, Auteur ; Fernando C. BARROS, Auteur ; Cesar G. VICTORA, Auteur ; Ana Maria B. MENEZES, Auteur ; Luis Augusto ROHDE, Auteur . - p.298-304. in Journal of Child Psychology and Psychiatry > 54-3 (March 2013) . - p.298-304 Mots-clés : Gene–environment interaction  DAT1  maternal smoking  MAOA  childhood maltreatment  externalizing Index. décimale : PER Périodiques Résumé : Background: The study of gene–environment interactions (G × E) is one of the most promising strategies to uncover the origins of mental disorders. Replication of initial findings, however, is essential because there is a strong possibility of publication bias in the literature. In addition, there is a scarcity of research on the topic originated from low- and middle-income countries (LMIC). The aim of this study was to replicate G × E hypotheses for externalizing problems among adolescents in a middle-income country. Methods: As part of the Pelotas 1993 Birth Cohort Study, 5,249 children were enrolled at birth and followed up to the age of 15 years, with an 85.7% retention rate. We sought an interaction between the homozygosity of the 10-repeat allele at the dopamine transporter (DAT1) gene and prenatal maternal smoking in the development of hyperactivity problems during adolescence assessed by the Strengths and Difficulties Questionnaire. We also tested for an interaction between the uVNTR polymorphism at the monoamine oxidase A (MAOA) and the experience of childhood maltreatment in the occurrence of conduct problems among adolescent boys. Results: Although there was a clear association between prenatal maternal smoking and hyperactivity scores in adolescence (p 0.001), no main genetic or interaction effects for the DAT1 gene were detected. Similarly, childhood maltreatment showed to be associated with conduct problems among boys (p 0.001), with no observable main genetic or interaction effects for the MAOA gene. Conclusions: In the largest mental health G × E study performed in a LMIC to date, we did not replicate previous positive findings from the literature. Despite the presence of main environmental effects, there was no evidence of effect modification by genotype status. Additional replication efforts to measure G × E are needed to better understand the origins of mental health and illness, especially in LMIC. En ligne : http://dx.doi.org/10.1111/jcpp.12022 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=191

Increase in child behavior problems among urban Brazilian 4-year olds: 1993 and 2004 Pelotas birth cohorts / Alicia MATIJASEVICH in Journal of Child Psychology and Psychiatry, 55-10 (October 2014)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 55-10 (October 2014) . - p.1125-1134 Titre : Increase in child behavior problems among urban Brazilian 4-year olds: 1993 and 2004 Pelotas birth cohorts Type de document : Texte imprimé et/ou numérique Auteurs : Alicia MATIJASEVICH, Auteur ; Elizabeth MURRAY, Auteur ; Alan STEIN, Auteur ; Luciana ANSELMI, Auteur ; Ana M. MENEZES, Auteur ; Iná S. SANTOS, Auteur ; Aluísio J. D. BARROS, Auteur ; Denise P. GIGANTE, Auteur ; Fernando C. BARROS, Auteur ; Cesar G. VICTORA, Auteur Article en page(s) : p.1125-1134 Langues : Anglais (eng) Mots-clés : Mental health  behavior problems  child behavior check list  longitudinal studies Index. décimale : PER Périodiques Résumé : Background There are an increasing number of reports on time trends in child and adolescent psychological problems but none from low- and middle-income countries, and very few covering the preschool period. The aim was to investigate changes in preschool behavioral/emotional problems in two birth cohorts from a middle-income country born 11 years apart. Methods We analyzed data from the 1993 and 2004 Pelotas birth cohort studies from Brazil. A subsample of 4-year olds from the 1993 cohort (634) and all 4-year olds from the 2004 cohort (3750) were assessed for behavioral/emotional problems through maternal report using the Child Behavior Checklist (CBCL). Response rates in these two population-based cohorts were above 90%. Results We found a significant increase in CBCL total problems, internalizing and externalizing mean scores over the 11-year period. For 1993 and 2004 Pelotas cohorts, respectively, CBCL mean values (SE) total problems scores were 27.9 (0.8) and 34.7 (0.3); for internalizing scores, 5.7 (0.2) and 6.3 (0.1) and for externalizing scores, 12.4 (0.4) and 15.5 (0.1). After adjusting for confounding variables, the largest increase from 1993 to 2004 was identified in the aggressive behavior syndrome score (Cohen's d = .50), followed by the externalizing problem score (Cohen's d = .40) and CBCL total problem score (Cohen's d = .36), respectively. The rise in child psychological problems was more marked in children from families with fewer assets and with less educated mothers. Conclusions Our findings provide evidence for a substantial increase in preschool behavioral problems among children in Brazil over an 11-year period. En ligne : http://dx.doi.org/10.1111/jcpp.12236 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=239 [article] Increase in child behavior problems among urban Brazilian 4-year olds: 1993 and 2004 Pelotas birth cohorts [Texte imprimé et/ou numérique] / Alicia MATIJASEVICH, Auteur ; Elizabeth MURRAY, Auteur ; Alan STEIN, Auteur ; Luciana ANSELMI, Auteur ; Ana M. MENEZES, Auteur ; Iná S. SANTOS, Auteur ; Aluísio J. D. BARROS, Auteur ; Denise P. GIGANTE, Auteur ; Fernando C. BARROS, Auteur ; Cesar G. VICTORA, Auteur . - p.1125-1134. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 55-10 (October 2014) . - p.1125-1134 Mots-clés : Mental health  behavior problems  child behavior check list  longitudinal studies Index. décimale : PER Périodiques Résumé : Background There are an increasing number of reports on time trends in child and adolescent psychological problems but none from low- and middle-income countries, and very few covering the preschool period. The aim was to investigate changes in preschool behavioral/emotional problems in two birth cohorts from a middle-income country born 11 years apart. Methods We analyzed data from the 1993 and 2004 Pelotas birth cohort studies from Brazil. A subsample of 4-year olds from the 1993 cohort (634) and all 4-year olds from the 2004 cohort (3750) were assessed for behavioral/emotional problems through maternal report using the Child Behavior Checklist (CBCL). Response rates in these two population-based cohorts were above 90%. Results We found a significant increase in CBCL total problems, internalizing and externalizing mean scores over the 11-year period. For 1993 and 2004 Pelotas cohorts, respectively, CBCL mean values (SE) total problems scores were 27.9 (0.8) and 34.7 (0.3); for internalizing scores, 5.7 (0.2) and 6.3 (0.1) and for externalizing scores, 12.4 (0.4) and 15.5 (0.1). After adjusting for confounding variables, the largest increase from 1993 to 2004 was identified in the aggressive behavior syndrome score (Cohen's d = .50), followed by the externalizing problem score (Cohen's d = .40) and CBCL total problem score (Cohen's d = .36), respectively. The rise in child psychological problems was more marked in children from families with fewer assets and with less educated mothers. Conclusions Our findings provide evidence for a substantial increase in preschool behavioral problems among children in Brazil over an 11-year period. En ligne : http://dx.doi.org/10.1111/jcpp.12236 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=239

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