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Evolution of nonsteroidal anti-inflammatory drugs (NSAIDs): cyclooxygenase (COX) inhibition and beyond Rao P; Knaus EEJ Pharm Pharm Sci 2008[Sep]; 11 (2): 81s-110sPURPOSE: NSAIDs constitute an important class of drugs with therapeutic applications that have spanned several centuries. Treatment of inflammatory conditions such as rheumatoid arthritis (RA) and osteoarthritis (OA) starting from the classic drug aspirin to the recent rise and fall of selective COX-2 inhibitors has provided an enthralling evolution. Efforts to discover an ultimate magic bullet to treat inflammation continues to be an important drug design challenge. This review traces the origins of NSAIDs, their mechanism of action at the molecular level such as cyclooxygenase (COX) inhibition, development of selective COX-2 inhibitors, their adverse cardiovascular effects, and some recent developments targeted to the design of effective anti-inflammatory agents with reduced side effects. METHODS: Literature data is presented describing important discoveries pertaining to the sequential development of classical NSAIDs and then selective COX-2 inhibitors, their mechanism of action, the structural basis for COX inhibition, and recent discoveries. RESULTS: A brief history of the development of NSAIDs and the market withdrawal of selective COX-2 inhibitors is explained, followed by the description of prostaglandin biosynthesis, COX isoforms, structure and function. The structural basis for COX-1 and COX-2 inhibition is described along with methods used to evaluate COX-1/COX-2 inhibition. This is followed by a section that encompasses the major chemical classes of selective COX-2 inhibitors. The final section describes briefly some of the recent advances toward developing effective anti-inflammatory agents such as nitric oxide donor NO-NSAIDs, dual COX/LOX inhibitors and anti-TNF therapy. CONCLUSIONS: A great deal of progress has been made toward developing novel anti-inflammatory agents. In spite of the tremendous advances in the last decade, the design and development of a safe, effective and economical therapy for treating inflammatory conditions still presents a major challenge.|Animals[MESH]|Anti-Inflammatory Agents, Non-Steroidal/*pharmacology[MESH]|Aspirin/pharmacology[MESH]|Cardiovascular System/drug effects[MESH]|Central Nervous System/drug effects[MESH]|Cyclooxygenase 1/chemistry/metabolism[MESH]|Cyclooxygenase 2 Inhibitors/*pharmacology[MESH]|Cyclooxygenase 2/chemistry/metabolism[MESH]|Evolution, Molecular[MESH]|Gastric Mucosa/*drug effects[MESH]|Gastrointestinal Tract/drug effects[MESH]|Humans[MESH]|Kidney/drug effects[MESH]|Models, Molecular[MESH]|Nitric Oxide Donors/pharmacology[MESH]|Synovial Membrane[MESH] |
