Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1996-7-17
pubmed:abstractText
The L-arginine:nitric oxide (NO) pathway is believed to exert many of its physiological effects via stimulation of the soluble guanylyl cyclase (SGC); however, the lack of a selective inhibitor of this enzyme has prevented conclusive demonstration of this mechanism of action. We have found that the compound 1H-[1,2,4]oxadiazolo[4,3,-a]quinoxalin-1-one (ODQ) inhibits the elevation of cGMP induced by the NO donor S-nitroso-DL-penicillamine in human platelets and rat vascular smooth muscle (IC50 = 10-60 nM and <10 nM, respectively) and that this is accompanied by prevention of the platelet inhibitory and vasodilator actions of NO donors. ODQ also inhibited the antiaggregatory action of NO generated by the platelets but did not affect the action of prostacyclin or that of a cGMP mimetic. In addition, ODQ inhibited the vasodilator actions of endogenously released NO and of NO generated after induction of NO synthase in vascular preparations. It did not, however, affect the increase in vascular smooth muscle cGMP or the dilatation induced by atrial natriuretic factor. ODQ had no effect on NO synthase activity, nor did it react with NO. It did, however, potently (IC50 approximately 10 nM) inhibit the activity of the SGC in cytosol obtained from crude extract of rat aortic smooth muscle. Thus ODQ prevents the actions of NO on platelets and vascular smooth muscle through its potent inhibitory effect on the SGC.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-1281150, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-1328604, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-1335336, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-1409644, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-1512218, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-1516112, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-1720856, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-191877, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-2114477, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-2160060, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-2168487, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-2366864, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-2540204, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-2541859, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-2542278, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-2552329, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-2825946, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-2845250, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-2845816, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-2873150, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-2888663, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-2924084, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-30778, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-3085757, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-3322462, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-3495737, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-5677719, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-5900482, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-6111365, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-6150043, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-6351341, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-7504587, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-7512692, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-7544433, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-7679577, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-7902177, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-8053889, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-8392939, http://linkedlifedata.com/resource/pubmed/commentcorrection/8643658-8420790
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
http://linkedlifedata.com/resource/pubmed/chemical/1H-(1,2,4)oxadiazolo(4,3-a)quinoxali..., http://linkedlifedata.com/resource/pubmed/chemical/Cyclic GMP, http://linkedlifedata.com/resource/pubmed/chemical/Enzyme Inhibitors, http://linkedlifedata.com/resource/pubmed/chemical/Epoprostenol, http://linkedlifedata.com/resource/pubmed/chemical/Guanylate Cyclase, http://linkedlifedata.com/resource/pubmed/chemical/Nitric Oxide, http://linkedlifedata.com/resource/pubmed/chemical/Nitric Oxide Synthase, http://linkedlifedata.com/resource/pubmed/chemical/Nitroso Compounds, http://linkedlifedata.com/resource/pubmed/chemical/Oxadiazoles, http://linkedlifedata.com/resource/pubmed/chemical/Oxyhemoglobins, http://linkedlifedata.com/resource/pubmed/chemical/Quinoxalines, http://linkedlifedata.com/resource/pubmed/chemical/S-nitrosopenicillamine
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0027-8424
pubmed:author
pubmed:issnType
Print
pubmed:day
20
pubmed:volume
93
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1480-5
pubmed:dateRevised
2009-11-18
pubmed:meshHeading
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