title: A118G polymorphism of OPRM1 gene is associated with schizophrenia.
abstract: Schizophrenia is ranked among multifactor diseases in whose pathogenesis, besides environmental factors, an interplay of functional polymorphisms of a larger number of candidate genes is involved. Neurodevelopmental abnormities are among the most accepted hypotheses in the etiology of schizophrenia. Recently, the role of oligodendrocytes in the development of the cortex has been cited repeatedly. During their various phases of differentiation oligodendrocytes present on their surfaces diverse receptors, among others the mu-opioid receptor (OPRM1). The study was focused on the relationship between the functional A118G polymorphism of the OPRM1 gene (rs1799971) and schizophrenia in groups of 130 male patients and 452 male controls. An association study revealed yet unpublished statistically significant difference of allelic and genotypic frequencies between the control and patient groups. According to our present knowledge, we assume that the OPRM1 gene polymorphism can influence the myelination of CNS neurons through regulations of expression of OPRM1 receptors on surfaces of oligodendrocytes. The neuronal myelination seems to be one of the important factors in the pathogenesis of schizophrenia.
authors.affiliation: Laboratory of Neurobiology and Molecular Psychiatry, Laboratory of Molecular Physiology, Department of Biochemistry, Faculty of Science, Masaryk University, Kotlárská 2, 611 37, Brno, Czech Republic. omarsery@sci.muni.cz
authors.forename: Omar
authors.initials: O
authors.lastname: Serý
authors.forename: Radovan
authors.initials: R
authors.lastname: Prikryl
authors.forename: Lukás
authors.initials: L
authors.lastname: Castulík
authors.forename: Frantisek
authors.initials: F
authors.lastname: St'astný
mesh_terms: D020022:Genetic Predisposition to Disease; D006801:Humans; D008297:Male; D011110:Polymorphism, Genetic; D017450:Receptors, Opioid, mu / Q000235:genetics*; D012559:Schizophrenia / Q000235:genetics* / Q000503:physiopathology
chemical_list: C485764:OPRM1 protein, human; D017450:Receptors, Opioid, mu