Article: Selective nitros(yl)ation induced in vivo by a nitric oxide-donating cyclooxygenase-2 inhibitor: a NObonomic analysis.
Free radical biology & medicine
2005 Volume 39, Issue 9, Page(s) 1191–1207
Abstract: Nitric oxide (NO) enhances anti-inflammatory drug action. Through a metabonomics approach termed "NObonomics," the effects of a prototypic NO donor (organic nitrate)-cyclooxygenase-2 inhibitor hybrid (NO-coxib), NMI-1093, on the NO metabolite status of ... ...
Abstract | Nitric oxide (NO) enhances anti-inflammatory drug action. Through a metabonomics approach termed "NObonomics," the effects of a prototypic NO donor (organic nitrate)-cyclooxygenase-2 inhibitor hybrid (NO-coxib), NMI-1093, on the NO metabolite status of the circulation and major organs have been profiled in vivo in the rat. An oral anti-inflammatory NMI-1093 bolus elicited acute tissue-, time-, and dose-dependent changes in oxidative and nitroso/nitrosyl NO metabolites. Gastric N-nitrosation and hepatic S-nitrosation and heme nitrosylation emerged as sensitive indices of this NO-coxib's metabolism. Acute NMI-1093-induced nitros(yl)ation correlated positively as a function of nitrate plus nitrite formation across all organs examined, suggesting a unifying in vivo mechanism consequent to NMI-1093 biotransformation that links oxidative and nitros(yl)ative routes of NO chemical biology and thereby may support downstream NO signaling. NMI-1093 depressed erythrocyte nitros(yl)ation, likely by inhibiting cellular carbonic anhydrase and shifting the intracellular balance between nitrogen oxides and carbonates. Glutathione-S-transferase or cytochrome P450 inhibitors also attenuated NMI-1093's NO metabolism in a compartment-selective fashion. Although not itself a NO donor, the des-nitro coxib analog of NMI-1093 influenced basal NO metabolite profiles, implicating a cyclooxygenase-NO synthase interaction in physiological NO regulation. By detailing the global NO metrics of a unique coxib bearing a popular NO-donor pharmacophore (i.e., a nitrate moiety) and defining some critical mechanistic determinants, this study demonstrates how NObonomics can serve as valuable tool in helping elucidate NO systems biology and the effect of NO-donor and non-NO-donating therapeutics thereon. |
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MeSH term(s) | Animals ; Brain/drug effects ; Brain/metabolism ; Carbonic Anhydrases/drug effects ; Cyclooxygenase 2 Inhibitors/administration & dosage ; Cyclooxygenase 2 Inhibitors/chemistry ; Cyclooxygenase 2 Inhibitors/pharmacology ; Dose-Response Relationship, Drug ; Erythrocytes/enzymology ; Heme/metabolism ; Kidney/drug effects ; Kidney/metabolism ; Liver/drug effects ; Liver/metabolism ; Male ; Nitrates/metabolism ; Nitric Oxide/metabolism ; Nitric Oxide Donors/administration & dosage ; Nitric Oxide Donors/chemistry ; Nitric Oxide Donors/pharmacology ; Nitrites/metabolism ; Oxazoles/administration & dosage ; Oxazoles/chemistry ; Oxazoles/pharmacology ; Oxidation-Reduction ; Rats ; Rats, Sprague-Dawley ; Stomach/drug effects ; Stomach/metabolism ; Sulfonamides/administration & dosage ; Sulfonamides/chemistry ; Sulfonamides/pharmacology |
Chemical Substances | Cyclooxygenase 2 Inhibitors ; NMI-1093 ; Nitrates ; Nitric Oxide Donors ; Nitrites ; OH-valdecoxib ; Oxazoles ; Sulfonamides ; Nitric Oxide (31C4KY9ESH) ; Heme (42VZT0U6YR) ; Carbonic Anhydrases (EC 4.2.1.1) |
Language | English |
Publishing date | 2005-11-01 |
Publishing country | United States |
Document type | Journal Article |
ZDB-ID | 807032-5 |
ISSN | 1873-4596 ; 0891-5849 |
ISSN (online) | 1873-4596 |
ISSN | 0891-5849 |
DOI | 10.1016/j.freeradbiomed.2005.06.011 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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