title: Association of angiotensin II type 1 receptor gene A1166C polymorphism with the presence of diabetes mellitus and metabolic syndrome in patients with documented coronary artery disease.
abstract: BACKGROUND
  There are relatively limited data available on the genetic susceptibility to diabetes mellitus and metabolic syndrome in the Iranian population. We have therefore investigated the association between the angiotensin II type I receptor gene polymorphism (AT(1)R/A1166C) and the presence of diabetes mellitus and metabolic syndrome in a well defined group of patients.
  
  
  METHODS
  Patients with angiographically defined coronary artery disease (CAD) (n=309) were evaluated for the presence of AT(1)R/A1166C polymorphism. These patients were classified into subgroups with (n=164, M/F: 109/55) and without (n=145, M/F: 84/61) diabetes mellitus. The AT(1)R polymorphism was assessed using a polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) based method.
  
  
  RESULTS
  There was a higher frequency of polymorphic genotypes (AC+CC) in the diabetic compared with the non-diabetic group (p=0.01). When determined for each gender separately, this difference remained significant in the males (p=0.04) but not in females (p=0.09). With regard to the allele frequencies, the C allele was significantly higher and the A allele frequency was lower in the diabetic group (p=0.01). This remained significant after gender segregation for males (p=0.01) but not females. In the binary logistic regression analysis, only serum fasting glucose was found as the independent predictor for the presence of diabetes in the CAD patients (β=1.16, p<0.001 for total population and β=1.29, p<0.001 for male subjects). There was no significant difference in genotype or allele frequencies between subgroups with and without metabolic syndrome, this being unaffected by gender or the definition of metabolic syndrome used apart from a significantly lower frequency of C allele in male subjects with metabolic syndrome defined by the NCEP ATP III criteria (p=0.04).
  
  
  CONCLUSIONS
  The AT(1)R/A1166C polymorphism may be associated with the presence of diabetes mellitus in male subjects with documented CAD.
authors.affiliation: Biotechnology Research Center, Avicenna Research Institute, Mashhad University of Medical Sciences (MUMS), Mashhad, Iran.
authors.forename: Akram
authors.initials: A
authors.lastname: Assali
authors.forename: Majid
authors.initials: M
authors.lastname: Ghayour-Mobarhan
authors.forename: Amirhossein
authors.initials: A
authors.lastname: Sahebkar
authors.forename: Mitra
authors.initials: M
authors.lastname: Hassani
authors.forename: Jamal
authors.initials: J
authors.lastname: Kasaian
authors.forename: Farnoosh
authors.initials: F
authors.lastname: Tatari
authors.forename: Mohsen
authors.initials: M
authors.lastname: Moohebati
authors.forename: Roghayeh
authors.initials: R
authors.lastname: Paydar
authors.forename: Mohammadreza
authors.initials: M
authors.lastname: Oladi
authors.forename: Habib A
authors.initials: HA
authors.lastname: Esmaeili
authors.forename: Shima
authors.initials: S
authors.lastname: Tavallaie
authors.forename: Shahireh Omidvar
authors.initials: SO
authors.lastname: Tehrani
authors.forename: Gordon A A
authors.initials: GA
authors.lastname: Ferns
authors.forename: Javad
authors.initials: J
authors.lastname: Behravan
mesh_terms: D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000235:genetics*; D003924:Diabetes Mellitus, Type 2 / Q000453:epidemiology / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease / Q000453:epidemiology / Q000235:genetics; D005838:Genotype; D006801:Humans; D008297:Male; D024821:Metabolic Syndrome / Q000453:epidemiology / Q000235:genetics*; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D012150:Polymorphism, Restriction Fragment Length; D015995:Prevalence; D044140:Receptor, Angiotensin, Type 1 / Q000235:genetics*; D017678:Sex Distribution
chemical_list: D044140:Receptor, Angiotensin, Type 1