title: C-reactive protein associated with coronary artery disease in Iranian patients with angiographically defined coronary artery disease.
abstract: BACKGROUND
  Several cross-sectional and cohort studies have reported an association between serum markers of inflammation such as C-reactive protein, and coronary heart disease in Caucasian populations. We aimed to investigate the relationship between levels of serum C-reactive protein (hs-CRP) and the presence of coronary artery disease (CAD) in Iranian patients undergoing coronary angiography.
  
  
  METHODS
  Serum hs-CRP, fasting lipid profile and blood glucose levels were measured in 110 patients (61 males and 49 females) undergoing routine coronary angiography. Anthropometric features including blood pressure were determined using standard procedures. Demographic characteristics, including post-menopausal status and smoking habit were assessed by questionnaire.
  
  
  RESULTS
  Of the 110 subjects undergoing angiography, 74 (67.28%) had significant CAD (CAD+) and 36 (32.72%) were classified as having insignificant CAD (CAD-). Mean age (p<0.01), waist circumference (p<0.01) and LDL (p<0.05) and median values of hs-CRP (p<0.01) and triglycerides (p<0.05) were higher in the patients CAD+ than in the subjects CAD-. The proportion of women who were postmenopausal was also significantly higher in the CAD+ group. Age (p<0.01), waist circumference (p<0.05) and hs-CRP (p<0.05) were significant CAD predictive factors from logistic regression analysis. Serum hs-CRP concentrations were significantly higher in smokers compared to non-smokers (p<0.05), low density lipoprotein (LDL) (r=0.31, p<0.001), and serum triglycerides (r=0.191, p<0.05) correlated with serum hs-CRP. The median value of serum hs-CRP increased with the severity of the disease, but failed to reach statistical significance.
  
  
  CONCLUSIONS
  Serum hs-CRP is an independent predictor of angiographically defined CAD in an Iranian population. Measurement of the serum hs-CRP level may improve risk stratification among patients suspected of having CAD. The strong correlations between serum hs-CRP with LDL and smoking may be due to the putative pro-inflammatory effects of these two parameters. The association with serum triglycerides may be indirect and related to insulin resistance and adiposity.
authors.affiliation: Atherosclerosis Research Center, Bu-Ali Research Institute, Mashhad University of Medical Science, Mashhad, Iran.
authors.forename: Seyyed Mohammad Reza
authors.initials: SM
authors.lastname: Kazemi-Bajestani
authors.forename: Majid
authors.initials: M
authors.lastname: Ghayour-Mobarhan
authors.forename: Mahmoud
authors.initials: M
authors.lastname: Ebrahimi
authors.forename: Mohsen
authors.initials: M
authors.lastname: Moohebati
authors.forename: Habib-Allah
authors.initials: HA
authors.lastname: Esmaeili
authors.forename: Gordon A A
authors.initials: GA
authors.lastname: Ferns
mesh_terms: D000328:Adult; D000368:Aged; D017130:Angioplasty; D001786:Blood Glucose / Q000032:analysis; D001794:Blood Pressure; D002097:C-Reactive Protein / Q000032:analysis*; D003324:Coronary Artery Disease / Q000097:blood* / Q000601:surgery*; D005260:Female; D006801:Humans; D007492:Iran; D008055:Lipids / Q000097:blood; D008297:Male; D008875:Middle Aged; D011795:Surveys and Questionnaires
chemical_list: D001786:Blood Glucose; D008055:Lipids; D002097:C-Reactive Protein