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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Research strategies for design and development of NSAIDs: clue to balance potency and toxicity of acetanilide compounds.

Despite the fact that many modern drug therapies are based on the concept of enzyme inhibition, inhibition of several enzymes leads to pathological disorders. Clinically used nonsteroidal anti-inflammatory drugs (NSAIDs) bind to the active site of the membrane protein, cyclooxygenase ( COX) and inhibit the synthesis of prostaglandins, the mediators for causing inflammation. At the same time, inhibition of hepatic cysteine proteases by some NSAID metabolites like NAPQI is implicated in the pathogenesis of hepatotoxicity. As a part of our efforts to develop new effective NSAIDs, a comprehensive investigation starting from synthesis to the study of the final metabolism of acetanilide group of compound has been envisaged with appropriate feedback from kinetic studies to enhance our knowledge and technical competency to feed the know-how to the medicinal chemist to screen out and design new acetanilide derivatives of high potency and low toxicity. Structure-function relationship based on the interaction of acetanilide with its cognate enzyme, cyclooxygenase has been studied critically with adequate comparison with several other available crystal structures of COX-NSAID complexes. Furthermore, to make the receptor based drug design strategy a novel and comprehensive one, both the mechanism of metabolism of acetanilide and structural basis of inhibition of cysteine proteases by the reactive metabolite (NAPQI) formed by cytochrome P450 oxidation of acetanilide have been incorporated in the study. It is hoped that this synergistic approach and the results obtained from such consorted structural investigation at atomic level may guide to dictate synthetic modification with judicious balance between cyclooxygenase inhibition and hepatic cysteine protease inhibition to enhance the potential of such molecular medicine to relieve inflammation on one hand and low hepatic toxicity on the other.[1]


  1. Research strategies for design and development of NSAIDs: clue to balance potency and toxicity of acetanilide compounds. Pal, A.K., Sen, S., Ghosh, S., Bera, A.K., Bhattacharya, S., Chakraborty, S., Banerjee, A. J. Biomol. Struct. Dyn. (2001) [Pubmed]
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