title: Lack of association of three GRIN2B polymorphisms with bipolar disorder.
abstract: We investigated three polymorphisms in the NMDA receptor 2B subunit gene (GRIN2B), involved in glutamatergic neurotransmission, as a candidate gene for bipolar disorder. In the study we included 419 patients with bipolar disorder. Consensus diagnosis by at least two psychiatrists was made, according to DSM-IV criteria, using SCID. The control group consisted of 487 healthy subjects. Genotypes for -200G/T, 366C/G and rs890G/T of GRIN2B polymorphisms were established by PCR-RFLP method. Linkage disequilibrium analysis was done with Haploview. Genotype distributions were in Hardy-Weinberg equilibrium for the three polymorphisms in the group of patients and control subjects. No association was found between the three polymorphisms and bipolar disorder. In linkage disequilibrium analysis we did not find linkage between the three polymorphisms of GRIN2B gene. The polymorphisms of GRIN2B gene analysed in this study are not likely to be associated with bipolar disorder.
authors.affiliation: Laboratory of Psychiatric Genetics, Department of Psychiatry, Poznan University of Medical Sciences, Poznan, Poland. alszczep@amp.edu.pl
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Szczepankiewicz
authors.forename: Maria
authors.initials: M
authors.lastname: Skibinska
authors.forename: Janusz
authors.initials: J
authors.lastname: Rybakowski
authors.forename: Anna
authors.initials: A
authors.lastname: Leszczynska-Rodziewicz
authors.forename: Marta
authors.initials: M
authors.lastname: Tomaszewska
authors.forename: Joanna
authors.initials: J
authors.lastname: Twarowska-Hauser
mesh_terms: D000328:Adult; D000483:Alleles; D001714:Bipolar Disorder / Q000175:diagnosis / Q000235:genetics* / Q000523:psychology; D005260:Female; D005787:Gene Frequency / Q000235:genetics; D056726:Genetic Association Studies; D020022:Genetic Predisposition to Disease / Q000235:genetics; D005838:Genotype; D006801:Humans; D015810:Linkage Disequilibrium; D008297:Male; D008875:Middle Aged; D011044:Poland; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic / Q000235:genetics*; D012150:Polymorphism, Restriction Fragment Length / Q000235:genetics; D016194:Receptors, N-Methyl-D-Aspartate / Q000235:genetics*
chemical_list: C121001:NR2B NMDA receptor; D016194:Receptors, N-Methyl-D-Aspartate