Cyclooxygenase - Definition

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Cyclooxygenase, also represented by the abbreviation COX, is an enzyme capable of converting arachidonic acid, which is involved in the formation of cellular membranes, into prostaglandin H2, responsible for numerous physiological functions, especially of the muscles. COX is also partly responsible for inflammatory phenomena, but it may be blocked by nonsteroidal anti-inflammatory drugs (NSAIDs) such as aspirin or ibuprofen, which inhibit it.