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l-Arginine is converted by nitric oxide synthase (NOS) to l-citrulline and nitric oxide (NO). NG-Hydroxy-l-arginine (NOHA) is the isolable intermediate of this reaction. NOHA has been identified in biological samples by gas chromatography–mass spectrometry (GC–MS) and quantified by high-performance liquid chromatography (HPLC). Reportedly, NOHA concentrations in human plasma and serum range over four...
The NO/sGC/cGMP/PKG system is one of the most powerful mechanisms responsible for platelet inhibition. In numerous publications, expression of functional NO synthase (NOS) in human and mouse platelets has been reported. Constitutive and inducible NOS isoforms convert l-arginine to NO and l-citrulline. The importance of this pathway in platelets and in endothelial cells for the regulation of platelet...
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