2007
DOI: 10.1016/j.jchromb.2007.02.001
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Chromatographic and mass spectrometric methods for quantitative determination of 3-nitrotyrosine in biological samples and their application to human samples

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Cited by 77 publications
(77 citation statements)
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References 110 publications
(153 reference statements)
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“…Because 3NT is a low-abundance PTM, issues with ion suppression and false-positive identification arise (Ryberg andCaidahl 2007 , Li et al 2011 ). A conservative set of guidelines has been proposed to increase confidence in the identification of 3NT-modified proteins as follows: accurate peptide charge state and mass, detection of the 3NT immonium ion fragment peak (m/z 181.1), validation of 3NT peptide chromatographic retention (in comparison to unmodified peptide), and limitation of unassigned fragment peaks (Li et al 2011 ) which can be adopted by any laboratory.…”
Section: Enrichmentmentioning
confidence: 99%
See 1 more Smart Citation
“…Because 3NT is a low-abundance PTM, issues with ion suppression and false-positive identification arise (Ryberg andCaidahl 2007 , Li et al 2011 ). A conservative set of guidelines has been proposed to increase confidence in the identification of 3NT-modified proteins as follows: accurate peptide charge state and mass, detection of the 3NT immonium ion fragment peak (m/z 181.1), validation of 3NT peptide chromatographic retention (in comparison to unmodified peptide), and limitation of unassigned fragment peaks (Li et al 2011 ) which can be adopted by any laboratory.…”
Section: Enrichmentmentioning
confidence: 99%
“…High-performance liquid chromatography is a popular separation technique to measure free 3NT because of its versatile coupling to a wide variety of detectors (Tsikas and Caidahl 2005 ) such as UV-visible (Vis) Halliwell 1994 , Sucu et al 2003 ) and fluorescence detectors (Sharov et al 2008, Dremina et al 2011. Electrochemical detection of proteinbound 3NT (Sugiura et al 2004 ) and free 3NT (Kaur et al 1998, Halejcia -Delophont et al 2001, Ryberg and Caidahl 2007, Nuriel et al 2008 ) is 100 × more sensitive than UV-Vis or fluorescence detection (Nuriel et al 2008 ). Detection limits of 3 attomole [limit of quantification (LOQ) 0.6 pm] of 3NT have been reported with MS (Tsikas 2012 ).…”
Section: Introductionmentioning
confidence: 99%
“…Several methods have been developed to detect protein nitration. [12][13][14][15][16] Immunodetection with antibodies directed against nitrotyrosine is one of the most commonly used methods. 12) Many highperformance liquid chromatography (HPLC)-based methods with ultraviolet, 13) electrochemical, 14) and fluorescent detection 15) have also been reported.…”
Section: · ϫmentioning
confidence: 99%
“…However, these methods are based on the detection and/or quantification of free nitrotyrosine, either in plasma or generated after the cleavage of the peptide bond by enzymatic or acidic hydrolysis. 16) These methods yield quantitative data only regarding the changes in nitration levels in whole tissues or whole proteins, and do not identify the sites of NO 2 -Tyr in proteins.…”
Section: · ϫmentioning
confidence: 99%
“…3-NT, a stable product of nitration of tyrosine residues, has been measured as a biomarker of protein damage induced by peroxynitrite and other RNS [23,24,25,26,27,28,29,30,31,32,33]. Human plasma proteins such as plasminogen, fibrinogen and superoxide dismutase, mitochondrial antoxidant enzymehave been demonstrated to be nitrated [23,25,26,27,28].…”
Section: Introductionmentioning
confidence: 99%