›› 2012, Vol. 27 ›› Issue (9): 701-706.

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The relationship of alpha2-adrenergic receptor gene polymorphism with silent myocardial ischemia in patients with type 2 diabetes mellitus

  

  1. 1. Department of Clinical Laboratory, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011,China; 2. Department of Cardiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China
  • Online:2012-09-12 Published:2012-09-12

Abstract: Objective To investigate the relationship of alpha2-adrenergic receptor (AR) gene polymorphisms (α2A-AR,α2B-AR and α2C-AR genes) with silent myocardial ischemia (SMI) in coronary artery disease (CAD) patients with type 2 diabetes mellitus (T2DM).   Methods By polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and gene sequencing,α2A-AR,α2B-AR and α2C-AR gene polymorphism analysis was performed in 107 healthy controls,129 T2DM patients with SMI and 192 T2DM patients with angina.   Results The genotype distribution and allele frequencies of α2B-AR gene polymorphism [insertion (I)/deletion (D)] had significant difference between SMI group and angina group (P<0.05), with genotype I/I frequency being greatly higher in SMI group (34.9%) than in angina group (19.8%, P=0.002).   Conclusions Genotype I/I of α2B-AR gene polymorphism is associated with SMI in CAD patients with T2DM.

Key words: Alpha2-adrenergic receptor, Gene polymorphism, Silent myocardial ischemia, Diabetes mellitus