title: Association Study of N-Methyl-D-Aspartate Receptor Subunit 2B (GRIN2B) Polymorphisms and Schizophrenia Symptoms in the Han Chinese Population.
abstract: Schizophrenia (SZ) is a common and complex psychiatric disorder that has a significant genetic component. The glutamatergic system is the major excitatory neurotransmitter system in the central nervous system, and is mediated by N-methyl-D-aspartate (NMDA) receptors. Disturbances in this system have been hypothesized to play a major role in SZ pathogenesis. Several studies have revealed that the NMDA receptor subunit 2B (GRIN2B) potentially associates with SZ and its psychiatric symptoms. In this study, we performed a case-control study to identify polymorphisms of the GRIN2B gene that may confer susceptibility to SZ in the Han Chinese population. Thirty-four single nucleotide polymorphisms (SNPs) were genotyped in 528 paranoid SZ patients and 528 control subjects. A significant association was observed in allele and genotype between SZ and controls at rs2098469 (χ2 = 8.425 and 4.994; p = 0.025 and 0.014, respectively). Significant associations were found in the allele at rs12319804 (χ2 = 4.436; p = 0.035), as well as in the genotype at rs12820037 and rs7298664 between SZ and controls (χ2 = 11.162 and 38.204; p = 0.003 and 4.27×10(-8), respectively). After applying the Bonferroni correction, rs7298664 still had significant genotype associations with SZ (p = 1.71×10(-7)). In addition, rs2098469 genotype and allele frequencies, and 12820037 allele frequencies were nominally associated with SZ. Three haplotypes, CGA (rs10845849-rs12319804-rs10845851), CC (rs12582848-rs7952915), and AAGAC (rs2041986-rs11055665-rs7314376-rs7297101-rs2098469), had significant differences between SZ and controls (χ2 = 4.324, 4.582, and 4.492; p = 0.037, 0.032, and 0.034, respectively). In addition, three SNPs, rs2098469, rs12820037, and rs7298664, were significantly associated with cognition factors PANSS subscores in SZ (F = 16.799, 7.112, and 13.357; p = 0.000, 0.017, and 0.000, respectively). In conclusion, our study provides novel evidence for an association between GRIN2B polymorphisms and SZ susceptibility and symptoms in the Han Chinese population.
authors.affiliation: Key Laboratory for NeuroInformation of Ministry of Education, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China; Department of Psychiatry, Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China.
authors.forename: Yongfeng
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Department of Psychiatry, Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China.
authors.forename: Wenqiang
authors.initials: W
authors.lastname: Li
authors.affiliation: Department of Psychiatry, Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China.
authors.forename: Hongxing
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Department of Psychiatry, Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China.
authors.forename: Ge
authors.initials: G
authors.lastname: Yang
authors.affiliation: Department of Psychiatry, Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China.
authors.forename: Xiujuan
authors.initials: X
authors.lastname: Wang
authors.affiliation: Department of Psychiatry, Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China.
authors.forename: Minli
authors.initials: M
authors.lastname: Ding
authors.affiliation: Key Laboratory for NeuroInformation of Ministry of Education, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China.
authors.forename: Tianzi
authors.initials: T
authors.lastname: Jiang
authors.affiliation: Department of Psychiatry, Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Lab of Biological Psychiatry, Xinxiang Medical University, Xinxiang, China.
authors.forename: Luxian
authors.initials: L
authors.lastname: Lv
mesh_terms: D000328:Adult; D044466:Asian People / Q000208:ethnology / Q000235:genetics*; D016022:Case-Control Studies; D002681:China / Q000208:ethnology; D005260:Female; D056726:Genetic Association Studies; D020022:Genetic Predisposition to Disease; D006801:Humans; D008297:Male; D020641:Polymorphism, Single Nucleotide; D016194:Receptors, N-Methyl-D-Aspartate / Q000235:genetics*; D012559:Schizophrenia / Q000208:ethnology / Q000235:genetics*
chemical_list: C121001:NR2B NMDA receptor; D016194:Receptors, N-Methyl-D-Aspartate