title: Genetic factors for lone atrial fibrillation.
abstract: Atrial fibrillation (AF) may result from an electric conduction disturbance, increased hemodynamic stress, ischemia, inflammation, or remodeling in atria. Although genetic epidemiological studies have identified several genetic variants as risk factors for AF, the genetic determinants of this condition remain largely unknown. The purpose of the present study was to identify gene polymorphisms that confer susceptibility to lone AF. The study population comprised 1069 unrelated Japanese individuals, including 196 subjects with chronic lone AF and 873 controls. The genotypes for 40 polymorphisms of 32 candidate genes were determined by a method that combines the polymerase chain reaction and sequence-specific oligonucleotide probes with suspension array technology. Multivariable logistic regression analysis with adjustment for age, sex, body mass index, and the prevalence of smoking, hypertension, diabetes mellitus, and hyperchole-sterolemia as well as a stepwise forward selection procedure revealed that the -1306C-->T polymorphism of the matrix metalloproteinase 2 gene (MMP2) and the -592A-->C polymorphism of the interleukin 10 gene (IL10) were significantly (false discovery rate of <0.05) associated with the prevalence of AF. The T allele of the MMP2 polymorphism and the C allele of the IL10 polymorphism were a risk factor for and protective factor against AF, respectively. Determination of the genotypes for these polymorphisms may thus prove informative for assessment of the genetic component of AF.
authors.affiliation: Department of Cardiovascular Medicine, Gifu Prefectural Tajimi Hospital, Gifu 507-8522, Japan. gogok@nifty.com
authors.forename: Kimihiko
authors.initials: K
authors.lastname: Kato
authors.forename: Mitsutoshi
authors.initials: M
authors.lastname: Oguri
authors.forename: Takeshi
authors.initials: T
authors.lastname: Hibino
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Yajima
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Matsuo
authors.forename: Tomonori
authors.initials: T
authors.lastname: Segawa
authors.forename: Sachiro
authors.initials: S
authors.lastname: Watanabe
authors.forename: Hidemi
authors.initials: H
authors.lastname: Yoshida
authors.forename: Kei
authors.initials: K
authors.lastname: Satoh
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Nozawa
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Yokoi
authors.forename: Yoshiji
authors.initials: Y
authors.lastname: Yamada
mesh_terms: D000368:Aged; D001281:Atrial Fibrillation / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005820:Genetic Testing; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D012307:Risk Factors