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Zeni CP, Tramontina S, Aguiar BW, Salatino-Oliveira A, Pheula GF, Sharma A, Stertz L, Moreira Maia CR, Hutz M, Kapczinski FP, Rohde LA. BDNF Val66Met polymorphism and peripheral protein levels in pediatric bipolar disorder and attention-deficit/hyperactivity disorder. Acta Psychiatr Scand 2016; 134:268-74. [PMID: 27209073 DOI: 10.1111/acps.12587] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/18/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Frontiers between pediatric bipolar disorder (PBD) and attention-deficit/hyperactivity disorder (ADHD) are not well defined. Few studies have addressed potentially different neurobiological factors between the two disorders. Brain-derived neurotrophic factor (BDNF) has been increasingly recognized for its etiologic and prognostic role in adult bipolar disorder (BD) studies. This study aimed to examine the BDNF gene polymorphism and potential alterations in BDNF serum levels in the pediatric ADHD patients with or without comorbid BD illness. METHOD We assessed the non-synonymous single-nucleotide polymorphism in the BDNF gene (rs6265/Val66Met) and its serum levels in children and adolescents with BD comorbid with ADHD (BD + ADHD) and ADHD alone. Children and adolescents were assessed for psychiatric diagnoses using the Kiddie-Sads-Present and Lifetime Version (K-SADS-PL). RESULTS Using Analysis of covariance (ancova) we detected a significant group effect (patients with BD + ADHD had higher serum levels than those with ADHD - F80,3 = 8.73, P = 0.005). CONCLUSION Although the Val66Met polymorphism at the BDNF gene does not seem to play a significant role in children and adolescents with BD or ADHD, BDNF serum levels deserve further attention in future research on neurobiological aspects of BD and ADHD.
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Affiliation(s)
- C P Zeni
- Juvenile Bipolar Disorder Outpatient Program (Programa para Crianças e Adolescentes com Transtorno Bipolar - ProCAB), Child and Adolescent Psychiatry Division, Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Department of Psychiatry and Behavioral Sciences, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - S Tramontina
- Juvenile Bipolar Disorder Outpatient Program (Programa para Crianças e Adolescentes com Transtorno Bipolar - ProCAB), Child and Adolescent Psychiatry Division, Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - B W Aguiar
- Bipolar Disorder Unit, Molecular Psychiatry Unit, National Institute for Translational Medicine, CNPq, Porto Alegre, Brazil
| | - A Salatino-Oliveira
- Department of Genetics and Molecular Biology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - G F Pheula
- Juvenile Bipolar Disorder Outpatient Program (Programa para Crianças e Adolescentes com Transtorno Bipolar - ProCAB), Child and Adolescent Psychiatry Division, Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - A Sharma
- Department of Psychiatry and Behavioral Sciences, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - L Stertz
- Department of Psychiatry and Behavioral Sciences, University of Texas Health Science Center at Houston, Houston, TX, USA.,Bipolar Disorder Unit, Molecular Psychiatry Unit, National Institute for Translational Medicine, CNPq, Porto Alegre, Brazil
| | - C R Moreira Maia
- ADHD Outpatient Program (PRODAH), Child and Adolescent Psychiatry Division, Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - M Hutz
- Department of Genetics and Molecular Biology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - F P Kapczinski
- Bipolar Disorder Unit, Molecular Psychiatry Unit, National Institute for Translational Medicine, CNPq, Porto Alegre, Brazil
| | - L A Rohde
- Juvenile Bipolar Disorder Outpatient Program (Programa para Crianças e Adolescentes com Transtorno Bipolar - ProCAB), Child and Adolescent Psychiatry Division, Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,ADHD Outpatient Program (PRODAH), Child and Adolescent Psychiatry Division, Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,National Institute of Developmental Psychiatry for Children and Adolescents, Porto Alegre, Brazil
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Bruxel EM, Salatino-Oliveira A, Akutagava-Martins GC, Tovo-Rodrigues L, Genro JP, Zeni CP, Polanczyk GV, Chazan R, Schmitz M, Arcos-Burgos M, Rohde LA, Hutz MH. LPHN3 and attention-deficit/hyperactivity disorder: a susceptibility and pharmacogenetic study. Genes Brain Behav 2016; 14:419-27. [PMID: 25989180 DOI: 10.1111/gbb.12224] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 04/28/2015] [Accepted: 05/13/2015] [Indexed: 12/22/2022]
Abstract
Latrophilin 3 (LPHN3) is a brain-specific member of the G-protein coupled receptor family associated to both attention-deficit/hyperactivity disorder (ADHD) genetic susceptibility and methylphenidate (MPH) pharmacogenetics. Interactions of LPHN3 variants with variants harbored in the 11q chromosome improve the prediction of ADHD development and medication response. The aim of this study was to evaluate the role of LPHN3 variants in childhood ADHD susceptibility and treatment response in a naturalistic clinical cohort. The association between LPHN3 and ADHD was evaluated in 523 children and adolescents with ADHD and 132 controls. In the pharmacogenetic study, 172 children with ADHD were investigated. The primary outcome measure was the parent-rated Swanson, Nolan and Pelham Scale - version IV applied at baseline, first and third months of treatment with MPH. The results reported herein suggest the CGC haplotype derived from single nucleotide polymorphisms (SNPs) rs6813183, rs1355368 and rs734644 as an ADHD risk haplotype (P = 0.02, OR = 1.46). Although non-significant after multiple testing correction, its interaction with the 11q chromosome SNP rs965560 slightly increases risk (P = 0.03, OR = 1.55). Homozygous individuals for the CGC haplotype showed faster response to MPH treatment as a significant interaction effect between CGC haplotype and treatment over time was observed (P < 0.001). Homozygous individuals for the GT haplotype derived from SNPs rs6551665 and rs1947275 showed a nominally significant interaction with treatment over time (P = 0.04). Our findings replicate previous findings reporting that LPHN3 confers ADHD susceptibility, and moderates MPH treatment response in children and adolescents with ADHD.
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Affiliation(s)
- E M Bruxel
- Genetics Department, Federal University of Rio Grande do Sul, Porto Alegre, RS
| | - A Salatino-Oliveira
- Genetics Department, Federal University of Rio Grande do Sul, Porto Alegre, RS
| | | | - L Tovo-Rodrigues
- Genetics Department, Federal University of Rio Grande do Sul, Porto Alegre, RS
| | - J P Genro
- Genetics Department, Federal University of Rio Grande do Sul, Porto Alegre, RS
| | - C P Zeni
- Division of Child and Adolescent Psychiatry, Hospital de Clinicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, RS
| | - G V Polanczyk
- Institute for Developmental Psychiatry for Children and Adolescents, Porto Alegre, RS.,Department of Psychiatry, University of São Paulo Medical School, São Paulo, SP, Brazil
| | - R Chazan
- Division of Child and Adolescent Psychiatry, Hospital de Clinicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, RS
| | - M Schmitz
- Division of Child and Adolescent Psychiatry, Hospital de Clinicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, RS
| | - M Arcos-Burgos
- Genome Biology Department, The John Curtin School of Medical Research, The Australian National University, Canberra, Australia
| | - L A Rohde
- Division of Child and Adolescent Psychiatry, Hospital de Clinicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, RS.,Institute for Developmental Psychiatry for Children and Adolescents, Porto Alegre, RS
| | - M H Hutz
- Genetics Department, Federal University of Rio Grande do Sul, Porto Alegre, RS
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Salatino-Oliveira A, Genro JP, Chazan R, Zeni C, Schmitz M, Polanczyk G, Roman T, Rohde LA, Hutz MH. Association study of GIT1 gene with attention-deficit hyperactivity disorder in Brazilian children and adolescents. Genes Brain Behav 2012; 11:864-8. [PMID: 22897819 DOI: 10.1111/j.1601-183x.2012.00835.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Revised: 06/20/2012] [Accepted: 08/09/2012] [Indexed: 11/29/2022]
Abstract
Attention-deficit hyperactivity disorder (ADHD) is one of the most common psychiatric disorders in children with a worldwide prevalence of 5.3%. Recently, a Korean group assessed the G-protein-coupled receptor kinase-interacting protein 1 (GIT1) gene that had previously been associated with ADHD. In their work, 27 single nucleotide polymorphisms SNPs in the GIT1 gene were tested; however, only the rs550818 SNP was associated with ADHD susceptibility. Moreover, the presence of the risk-associated allele determined reduced GIT1 expression, and Git1-deficient mice exhibit ADHD-like phenotypes. The aim of this study was to determine if this association also occurs in a sample of Brazilian children with ADHD. No effect of GIT1 genotypes on ADHD susceptibility was observed in the case-control analysis. The odds ratios (ORs) were 0.75 (P = 0.184) for the CT genotype and 1.09 (P = 0.862) for the TT genotype. In addition, the adjusted OR of the CT+TT genotypes vs. the CC genotype was also estimated (P = 0.245). There were no dimensional associations between the GIT1 genotypes and both hyperactivity and /impulsivity, and only hyperactivity Swanson, Nolan and Pelham Scale-Version IV (SNAP-IV) scores (P = 0.609 and P = 0.247, respectively). The transmission/disequilibrium test indicated that there was no over-transmission of rs550818 alleles from parents to ADHD children (z = 0.305; P = 0.761). We conclude that rs550818 is not associated with ADHD in this Brazilian sample. More studies are required before concluding that this polymorphism plays a role in ADHD susceptibility.
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Affiliation(s)
- A Salatino-Oliveira
- Genetics Department, Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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Bruxel EM, Salatino-Oliveira A, Genro JP, Zeni CP, Polanczyk GV, Chazan R, Rohde LA, Hutz MH. Association of a carboxylesterase 1 polymorphism with appetite reduction in children and adolescents with attention-deficit/hyperactivity disorder treated with methylphenidate. Pharmacogenomics J 2012; 13:476-80. [DOI: 10.1038/tpj.2012.25] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 03/05/2012] [Accepted: 04/11/2012] [Indexed: 12/27/2022]
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