Nonsteroidal anti-Inflammatory drugs and cardiovascular risk.

نویسندگان

  • Patricia A Howard
  • Patrice Delafontaine
چکیده

Nonsteroidal anti-inflammatory drugs (NSAID) inhibit cyclooxygenase (COX) enzymes, which exist in at least two isoforms, COX-1 and COX-2. Aspirin and older agents in this class are nonselective inhibitors of both COX-1 and COX-2. Newer agents termed "coxibs" are selective inhibitors of COX-2. Among the NSAID, only aspirin has been proven to significantly reduce cardiovascular risk, primarily through inhibition of COX-1-mediated platelet aggregation. It has been suggested that other nonselective agents, especially naproxen, may provide some lesser degree of cardioprotection, but conclusive evidence is lacking. Conversely, there are concerns that the COX-2 inhibitors may increase cardiovascular risk. However, mechanisms for this potentially adverse cardiovascular effect are unknown, and it is becoming increasingly clear that our understanding of the role of COX-2 in cardiovascular function is incomplete. Some studies have demonstrated a potentially beneficial effect of COX-2 on cardiovascular function that could be negated by COX-2 inhibition, while other studies have reported improved endothelial function with COX-2 inhibitors. Additionally, the impact of combined therapy with aspirin and other COX inhibitors is not yet clear. This article will review the studies that have examined these issues.

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عنوان ژورنال:
  • South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde

دوره 97 7  شماره 

صفحات  -

تاریخ انتشار 2004