The COX-2 G/C -765 polymorphism may modulate the occurrence of cerebrovascular ischemia

Donatella Colaizzo, Laura Fofi, Gianluca Tiscia, Renzo Guglielmi, Nicola Cocomazzi, Massimiliano Prencipe, Maurizio Margaglione, Danilo Toni

Research output: Contribution to journalArticlepeer-review


In the atherosclerotic plaque, cycloxygenase-2 (COX-2) catalyzes prostaglandin E formation, which acts as a proatherogenic factor. A polymorphism, G/C -765, within the COX-2 promoter region modulates gene expression and the risk of cerebrovascular disease. We have evaluated the relation between COX-2 G/C -765 genotypes and the occurrence of cerebrovascular ischemia. We evaluated the COX-2 G/C -765 polymorphism in 110 consecutive patients with a documented history of acute ischemic cerebrovascular disease, in 110 age-matched and sex-matched subjects without such history, and in a general population (n = 324) from the same ethnical background. The frequency of the COX-2 -765C allele in patients [0.21; 95% confidence interval (CI), 0.16-0.26] was similar to those found in controls (0.28; 95% CI, 0.22-0.34) and in the general population (0.26; 95% CI, 0.23-0.29). Carriers of the CC genotype differed between patients (0.02; 95% CI, 0.00-0.05) and controls [0.10 (95% CI, 0.04-0.16), P = 0.019; odds ratio, 0.17 (95% CI, 0.04-0.79)] or the general population [0.08 (95% CI, 0.05-0.11), P = 0.023; odds ratio, 0.22 (95% CI, 0.05-0.95)]. In a multiple logistic regression analysis adjusted for confounding variables, smoking status (P <0.001), atrial fibrillation (P = 0.004) and COX-2 G/ C-765 polymorphism (P = 0.016) independently contributed to cerebrovascular ischemia, with CC carriers exhibiting a lower risk (odds ratio, 0.07; 95% CI, 0.01-0.61). Our data show an association between the COX-2 G/ C-765 gene polymorphism and cerebrovascular ischemia, suggesting that the COX-2 gene is a susceptibility locus for the risk of cerebrovascular ischemic disease.

Original languageEnglish
Pages (from-to)93-96
Number of pages4
JournalBlood Coagulation and Fibrinolysis
Issue number2
Publication statusPublished - Mar 2006


  • Cyclooxygenase-2
  • Genetics
  • Risk factors
  • Stroke
  • Thrombosis

ASJC Scopus subject areas

  • Hematology


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