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Genetic factors for lone atrial fibrillation

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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.
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Document Type: Research Article

Affiliations: Department of Cardiovascular Medicine, Gifu Prefectural Tajimi Hospital, Gifu 507-8522, Japan., Email: [email protected]

Publication date: January 1, 2007

More about this publication?
  • The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.

    The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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