Dynamic Change in ST-Segment and Spontaneous Occurrence of Ventricular Fibrillation in Brugada Syndrome With a Novel Nonsense Mutation in the SCN5A Gene During Long-Term Follow-up

DOI Web Site 被引用文献2件 参考文献50件
  • Kawamura Mihoko
    Department of Cardiovascular and Respiratory Medicine, Shiga University of Medical Science
  • Ozawa Tomoya
    Department of Cardiovascular and Respiratory Medicine, Shiga University of Medical Science
  • Yao Takenori
    Department of Cardiovascular and Respiratory Medicine, Shiga University of Medical Science
  • Ashihara Takashi
    Department of Cardiovascular and Respiratory Medicine, Shiga University of Medical Science
  • Sugimoto Yoshihisa
    Department of Medical Informatics and Biomedical Engineering, Shiga University of Medical Science
  • Yagi Takafumi
    Division of Cardiology, Department of Internal Medicine, The Second Okamoto General Hospital
  • Itoh Hideki
    Department of Cardiovascular and Respiratory Medicine, Shiga University of Medical Science
  • Ito Makoto
    Department of Cardiovascular and Respiratory Medicine, Shiga University of Medical Science
  • Makiyama Takeru
    Department of Cardiovascular Medicine, Kyoto University Graduate School of Medicine
  • Horie Minoru
    Department of Cardiovascular and Respiratory Medicine, Shiga University of Medical Science

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抄録

A 67-year-old male underwent genetic testing under the diagnosis of Brugada syndrome because of recurrent ventricular fibrillation with coincident ST-segment elevation in either right precordial, inferior leads or both since the age of 55 years. Screening of gene mutations using denaturing high-performance liquid chromatography (DHPLC) and direct sequencing identified a novel nonsense mutation (R179X) of SCN5A in a heterozygous manner. The functional assay for the identified mutation, using a whole-cell patch clamp in the heterologous expression system, revealed that the nonsense mutation, located in the second transmembrane segment of the first domain (DI-S2) of the α-subunit, failed to synthesize the complete structure of the cardiac sodium channel, thus causing the non-functional channel. Coding effects by the gene mutation was altered during the 12-year follow-up, which might affect the clinical features of the patient through the ion channel density in the ventricle, dynamics of repolarization abnormality and conduction disturbance. (Circ J 2009; 73: 584 - 588)<br>

収録刊行物

  • Circulation Journal

    Circulation Journal 73 (3), 584-588, 2009

    一般社団法人 日本循環器学会

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