title: Analysis of dopamine D4 receptor gene polymorphism using microchip electrophoresis.
abstract: A microfabricated electrophoresis device was used for rapid polymerase chain reaction product analysis in genotyping the dopamine D4 receptor gene (DRD4) 48 base pairs repeat polymorphism. An allelic ladder, prepared from homozygous individuals, was used as internal standard during the microchip electrophoresis based analysis. Comparison of this novel separation method with the conventional slab gel and previously reported ultra-thin-layer techniques confirmed the reliability of this new method. Genotyping of 332 healthy Hungarian individuals gave the following allele frequencies: two-repeat: 0.089; three-repeat: 0.026; four-repeat: 0.674; five-repeat: 0.011; six-repeat: 0.002; seven-repeat: 0.189; eight-repeat: 0.011. The genotype frequencies obtained showed no deviation from the Hardy-Weinberg equilibrium (p>0.903), further underlying the reliability of this new genotyping technique.
authors.affiliation: Institute of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, Budapest, Hungary.
authors.forename: C
authors.initials: C
authors.lastname: Barta
authors.forename: Z
authors.initials: Z
authors.lastname: Ronai
authors.forename: Z
authors.initials: Z
authors.lastname: Nemoda
authors.forename: A
authors.initials: A
authors.lastname: Szekely
authors.forename: E
authors.initials: E
authors.lastname: Kovacs
authors.forename: M
authors.initials: M
authors.lastname: Sasvari-Szekely
authors.forename: A
authors.initials: A
authors.lastname: Guttman
mesh_terms: D001483:Base Sequence; D017931:DNA Primers; D004586:Electrophoresis / Q000379:methods*; D005838:Genotype; D006801:Humans; D008904:Miniaturization; D018598:Minisatellite Repeats; D011110:Polymorphism, Genetic; D017448:Receptors, Dopamine D2 / Q000235:genetics*; D050638:Receptors, Dopamine D4
chemical_list: D017931:DNA Primers; C493599:DRD4 protein, human; D017448:Receptors, Dopamine D2; D050638:Receptors, Dopamine D4