Abstract
Aspirin is the most commonly used antiplatelet drug for treatment of a serious vascular event, most notably stroke and myocardial infarction. However, despite the demonstrated benefit of aspirin, significant fraction of aspirin-treated patients may be resistant to the antiplatelet effects of the drug. The possible mechanisms of aspirin resistance (AR) are multifactorial. A genetic basis for AR has been suggested to exist. Therefore, the present study was taken up to investigate the role of −765G/C polymorphism (rs20417) in the cyclooxygenase-2 (COX-2) gene with AR in stroke patients. Four hundred and fifty stroke patients and four hundred and forty age and sex matched healthy controls were involved in the study. Baseline clinical data were collected and follow-up telephone interviews were conducted with patients at 3 months post event to determine stroke outcome using Modified Rankin Scale. Blood samples were collected and genotypes determined by polymerase chain reaction-restriction digestion technique. The association between the genotypes and outcome was evaluated by stepwise multiple logistic regression analysis. The COX-2 CC and GC genotype showed a significant association with bad outcome. Therefore, the carriers of C allele of COX-2 −765G/C polymorphism are more prone to AR in comparison with non-carriers. These results support a potential role of −765G/C COX-2 gene polymorphism with AR in ischemic stroke patients.
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Sharma, V., Kaul, S., Al-Hazzani, A. et al. Association of COX-2 rs20417 with aspirin resistance. J Thromb Thrombolysis 35, 95–99 (2013). https://doi.org/10.1007/s11239-012-0777-8
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DOI: https://doi.org/10.1007/s11239-012-0777-8