title: Lack of association between endoplasmic reticulum stress response genes and suicidal victims.
abstract: As lithium has been shown to have a protective effect against suicidal behavior, genes on which mood stabilizers act may be involved in biological susceptibility to suicide. A recent study showed that endoplasmic reticulum (ER) stress response was impaired in the bipolar disorders and the impairment was ameliorated by a mood stabilizer, valproate. We hypothesized that an alteration of ER stress response is involved in the biological susceptibility to suicide through genetic polymorphisms, and examined the association of polymorphisms of X-box binding protein 1 (XBP1) and heat shock 70-kDa protein 5 (HSPA5) genes with suicide. We found no significant difference in the distribution of these polymorphisms between the suicide victims and the controls. These results suggest that the polymorphisms examined in this study are not involved in the susceptibility to suicide of the Japanese.
authors.affiliation: Division of Molecular Medicine and Medical Genetics, International Center for Medical Research and Treatment (ICMRT), Kobe University Graduate School of Medicine.
authors.forename: Kaoru
authors.initials: K
authors.lastname: Sakurai
authors.forename: Naoki
authors.initials: N
authors.lastname: Nishiguchi
authors.forename: Osamu
authors.initials: O
authors.lastname: Shirakawa
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Nushida
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Ueno
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Maeda
authors.forename: Yoshitake
authors.initials: Y
authors.lastname: Hayashi
mesh_terms: D000328:Adult; D001714:Bipolar Disorder / Q000235:genetics / Q000378:metabolism; D004268:DNA-Binding Proteins / Q000235:genetics / Q000378:metabolism; D004721:Endoplasmic Reticulum / Q000235:genetics* / Q000378:metabolism; D000091342:Endoplasmic Reticulum Chaperone BiP; D005260:Female; D006360:Heat-Shock Proteins / Q000235:genetics / Q000378:metabolism; D006801:Humans; D008297:Male; D008875:Middle Aged; D018832:Molecular Chaperones / Q000235:genetics / Q000378:metabolism; D009687:Nuclear Proteins / Q000235:genetics / Q000378:metabolism; D017354:Point Mutation; D020641:Polymorphism, Single Nucleotide; D000071701:Regulatory Factor X Transcription Factors; D013315:Stress, Psychological / Q000235:genetics* / Q000378:metabolism; D013405:Suicide; D014157:Transcription Factors; D000071717:X-Box Binding Protein 1
chemical_list: D004268:DNA-Binding Proteins; D000091342:Endoplasmic Reticulum Chaperone BiP; C000717247:HSPA5 protein, human; D006360:Heat-Shock Proteins; D018832:Molecular Chaperones; D009687:Nuclear Proteins; D000071701:Regulatory Factor X Transcription Factors; D014157:Transcription Factors; D000071717:X-Box Binding Protein 1; C000605543:XBP1 protein, human