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In vitro studies suggested that nitrite may play a cytoprotective role in inflammation. The aim of the present clinical study was to investigate the relationship between the NO metabolites nitrite and nitrate and the biomarkers of oxidative stress 3-nitrotyrosine (3-NT) and 15(S)-iso-PGF 2α in patients suffering from chronic inflammatory rheumatic diseases. In morning urine from 28 patients...
3-Nitrotyrosine (NO 2 Tyr) is a potential biomarker of reactive-nitrogen species (RNS) including peroxynitrite. 3-Nitrotyrosine occurs in human plasma in its free and protein-associated forms and is excreted in the urine. Measurement of 3-nitrotyrosine in human plasma is invasive and associated with numerous methodological problems. Recently, we have described an accurate method based on gas...
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