Title : Neutrophil- and myeloperoxidase-mediated metabolism of reduced nimesulide: evidence for bioactivation.

Pub. Date : 2010 Nov 15

PMID : 20939553






7 Functional Relationships(s)
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1 Neutrophil- and myeloperoxidase-mediated metabolism of reduced nimesulide: evidence for bioactivation. nimesulide myeloperoxidase Homo sapiens
2 We demonstrate here that the reduced nimesulide, M1, undergoes a facile oxidation with activated neutrophils or with MPO in the presence of H(2)O(2) or HOCl to produce a variety of reactive as well as stable metabolites. nimesulide myeloperoxidase Homo sapiens
3 Other metabolites, for example, M6, M8, and M9, were unique to the myeloperoxidase, because of their mode of formation from activation of the amino group of reduced nimesulide. nimesulide myeloperoxidase Homo sapiens
4 In summary, our results demonstrate that a known nimesulide metabolite could be bioactivated by MPO through a pathway distinct from HLM-mediated pathways and that the generation of reactive species by the MPO-mediated bioactivation pathway at the site of inflammation may contribute to the toxicity associated with nimesulide. nimesulide myeloperoxidase Homo sapiens
5 In summary, our results demonstrate that a known nimesulide metabolite could be bioactivated by MPO through a pathway distinct from HLM-mediated pathways and that the generation of reactive species by the MPO-mediated bioactivation pathway at the site of inflammation may contribute to the toxicity associated with nimesulide. nimesulide myeloperoxidase Homo sapiens
6 In summary, our results demonstrate that a known nimesulide metabolite could be bioactivated by MPO through a pathway distinct from HLM-mediated pathways and that the generation of reactive species by the MPO-mediated bioactivation pathway at the site of inflammation may contribute to the toxicity associated with nimesulide. nimesulide myeloperoxidase Homo sapiens
7 In summary, our results demonstrate that a known nimesulide metabolite could be bioactivated by MPO through a pathway distinct from HLM-mediated pathways and that the generation of reactive species by the MPO-mediated bioactivation pathway at the site of inflammation may contribute to the toxicity associated with nimesulide. nimesulide myeloperoxidase Homo sapiens