The rate-limiting enzyme for prostanoid synthesis cyclooxygenase-2 (COX-2) has been implicated in the basic mechanisms of several brain diseases, including stroke, multiple sclerosis and neurodegenerative diseases.1 The approval by the Food and Drug Administration (FDA) of highly selective COX-2 inhibitors for the treatment of pain and rheumatoid arthritis (RA) raised the possibility that these agents could also be used in the treatment of neurological diseases including stroke. However, the occurrence of serious cardiovascular complications in patients receiving COX-2 inhibitors has led to the recent withdrawal from the market of a popular COX-2 inhibitor and has called for a re-evaluation of the therapeutic potential of these drugs. In this article, we briefly review the role of COX-2 in ischemic brain injury and re-examine the validity of the COX-2 pathway as a therapeutic target for ischemic stroke.
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