Siraki, A.G., Deterding, L., Bonini, M.G., Jiang, J.J., Ehrenshaft, M., Mason, R.P. Procainamide but not N-acetylprocainamide induces protein free radical formation on myeloperoxidase: A potential mechanism of agranulocytosis. Chemical Research in Toxicology 21(5):1143-1153, 2008. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=18489081)
Rehman, H., Connor, H.D., Ramshesh, V.K., Theruvath, T.P., Mason, R.P. , Wright, G.L., Lemasters, J.J., Zhong, Z. Ischemic preconditioning prevents free radical production and mitochondrial depolarization in small-for-size rat liver grafts. Transplantation 85(9):1322-1331; 2008. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=18475191)
Lardinois, O.M., Detweiler, C.D. , Tomer, K.B., Mason, R.P., Deterding, L.J. Identifying the site of spin trapping in proteins by a combination of liquid chromatography, ELISA and off-line tandem mass spectrometry. Free Radical Biology & Medicine 44(5):893-906; 2008. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=18160050)
Bhattacharjee, S., Deterding, L.J., Jiang, J.J., Bonini, M.G., Tomer, K.B., Ramirez, D.C., Mason, R.P. Electron transfer between a tyrosyl radical and a cysteine residue in hemoproteins: spin trapping analysis. Journal of the American Chemical Society 129(44):13493-13501; 2007. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=17939657)
Jiang, J.J., Corbett, B.J., Hogg, N., Mason, R.P. An electron paramagnetic resonance investigation of the oxygen dependence of the arterial-venous gradient of nitrosyl hemoglobin (HbNO) in blood circulation. Free Radical Biology & Medicine 8:1208-1215; 2007. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=17854716)
Bhattacharjee, S., Deterding, L.J., Jiang, J.J., Bonini, M.G., Tomer, K.B., Ramirez, D.C., Mason, R.P. Electron transfer between a tyrosyl radical and a cysteine residue in hemoproteins: spin trapping analysis. Journal of the American Chemical Society 44:13493-13501; 2007. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=17939657)
Ramirez, D.C., Gomez-Mejiba, S.E., Mason, R.P. Immuno-spin trapping analyses of DNA radicals. Nature Protocols 2:512-522; 2007. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids=17406615&query_hl=16&itool=pubmed_docsum)
Bonini, M.G., Siraki, A.G., Bhattacharjee, S., Mason, R.P. Glutathione-induced radical formation on lactoperoxidase does not corelate with the enzyme’s peroxidase activity. Free Radical Biol. Med. 42:985-992; 2007. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids=17349926&query_hl=10&itool=pubmed_docsum)
Woods, C.G., Burns, A.M., Maki, A., Bradford, B.U., Cunningham, M.L., Connor, H.D., Kadiiska, M.B., Mason, R.P., Peters, J.M., Rusyn, I. Sustained formation of α-(4-pyridyl-1-oxide)-N-tert-butylnitrone radical adducts in mouse liver by peroxisome proliferators is dependent upon peroxisome proliferator-activated receptor-α, but not NADPH oxidase. Free Radical Biol. Med. 42:335-342; 2007. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids=17210446&query_hl=7&itool=pubmed_docsum)
Zhong, Z., Connor, H.D., Li, X., Mason, R.P., Forman, D.T., Lemasters, J.J., Thurman, R.G. Reduction of ciclosporin and tacrolimus nephrotoxicity by plant polyphenols. J. Pharm. Pharmacol. 58:1533-1543; 2006. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids=17132217&query_hl=2&itool=pubmed_docsum)
Kono, H., Woods, C.G., Maki, A., Connor, H.D., Mason, R.P., Rusyn, I., Fujii, H. Electron spin resonance and spin trapping technique provide direct evidence that edaravone prevents acute ischemia-reperfusion injury of the liver by limiting free radical-mediated tissue damage. Free Rad. Res. 40:579-588; 2006. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=16753835)
Ehrenshaft, M., Mason, R.P. Protein radical formation on thyroid peroxidase during turnover as detected by immuno-spin trapping. Free Radical Biol. Med. 41: 422-430; 2006. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=16843823)
Nakai, K., Kadiiska, M.B., Jiang, J.-J., Stadler, K., Mason, R.P. Free Radical production requires both inducible nitric oxide synthase and xanthine oxidase in LPS-treated skin. Natl. Acad. Sci. USA.103: 4616-4621; 2006. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=16537416)
Bonini, M.G., Rota, C., Tomasi, A., Mason, R.P. The oxidation of 2’,7’-dichlorofluorescin to reactive oxygen species: A self-fulfilling prophesy? Free Radical Biol. Med. 40: 968- 975; 2006. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=16540392)
Keszler, A., Mason, R.P., Hogg, N. Immuno-spin trapping of hemoglobin and myoglobin radicals from nitrite-mediated oxidation. Free Radical Biol. Med. 40: 507-515; 2006. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=16443166)
Ramirez, D.C., Gomez Mejiba, S.E., Mason, R.P. Immuno-spin trapping of DNA radicals. Nature Methods 3 (2): 123-127; 2006. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=16432522)
Nakai, Kozo and Mason, R.P. Immunochemical detection of nitric oxide and nitrogen dioxide trapping of the tyrosyl radical and the resulting nitrotyrosine in sperm whale myoglobin. Free Radical Biol. Med. 39:1050-1058; 2005. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=16198232)
Ramirez D.C., Gomez Mejiba S.E., Mason R.P. Copper-catalyzed protein oxidation and its modulation by carbon dioxide: enhancement of protein radicals in cells. J. Biol. Chem. 280: 27402-27411; 2005. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=15905164)
Zhong Z., Conner H.D., Frosh M., Bunzedahl H., Lind H., Lehnert M., Mason R.P., Thurman R.G., Lemasters J.J. Free radical-dependent dysfunction of small-for-size rat liver grafts: prevention by plant polyphenols. Gastroenterology 129: 652-664; 2005. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=16083719)
Dikalov S., Jiang J., Mason R.P. Characterization of the high-resolution ESR spectra of superoxide radical adducts of 5-(diethoxyphosphoryl)-5-methyl-1-pyrroline N-oxide (DEPMPO) and 5,5-dimethyl-1-pyrroline N-oxide (DMPO). Analysis of conformation exchange. Free Radic. Res. 39(8): 825-836; 2005. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=16036362)
Detweiler C.D., Lardinois O.M., Deterding L.J., Ortiz de Montellano P.R., Tomer K.B., Mason R.P. Identification of the myoglobin tyrosyl radical by immuno-spin trapping and its dimerization. Free Radic. Biol. Med. 38: 969-976; 2005. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=15749393)
Arimoto T., Kadiiska M.B., Sato K., Corbett J., Mason R.P. Synergistic production of lung free radicals by diesel exhaust particles and endotoxin. Am. J. Respir. Crit. Care Med. 171: 379-387, 2005. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=15477498)
Kadiiska, M.B., Gladen, B.C., Baird, D.D., Graham, L.B., Parker, C.E., Ames, B.N., Basu, S., FitzGerald, G.A., Lawson, J.A., Marnett, L.J., Morrow, J.D., Murray, D.M., Plastaras, J., Roberts, L.J., Rokach, J., Shigenaga, M.K., Sun, J., Walter, P.B., Tomer, K.B., Barrett, J.C., Mason, R.P. Biomarkers of Oxidative Stress Study III. Effects of the Non-Steroidal Anti-Inflammatory Agents Indomethacin and Meclofenamic acid on Measurements of Oxidative Products of Lipids in CCl4 Poisoning. Free Radical Biol. Med. 38: 711-718, 2005. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=15721981)
Kadiiska, M.B., Gladen, B.C., Baird, D.D., Germolec, D., Graham, L.B., Parker, C.E., Nyska, A., Wachsman, J.T., Ames, B.N., Basu, S., Brot, N., FitzGerald, G.A., Floyd, R.A., George, M., Heinecke, J.W., Hatch, G.E., Hensley, K., Lawson, J.A., Marnett, L.J., Morrow, J.D., Murray, D.M., Plastaras, J., Roberts, L.J., Rokach, J., Shigenaga, M.K., Sohal, R.S., Sun, J., Tice, R.R., Van Thiel, D.H., Wellner, D., Walter, P.B., Tomer, K.B., Mason, R.P., Barrett, J.C. Biomarkers of Oxidative Stress Study II. Are Oxidation Products of Lipids, Proteins and DNA Markers in CCl4 Poisoning? Free Radical Biol. Med. 38: 698-710, 2005. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=15721980)
Ramirez, D.C., Gomez Mejiba, S.E., Mason, R.P. Mechanism of hydrogen peroxide-induced Cu, Zn-superoxide dismutase-centered radical formation as explored by immuno-spin trapping. Free Radical Biol. Med. 38: 201-214, 2005. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=15607903)
Qian, S.Y., Kadiiska M.B., Guo, Q., Mason R.P. A novel protocol to identify and quantify all spin trapped free radicals from in vitro/in vivo interaction of HO• and DMSO: LC/ESR, LC/MS, and dual spin trapping combinations. Free Radic. Biol. Med. 38: 125-135, 2005. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=15589381)
Connor HD, Sturgeon BE, Mottley C, Sipe HJ, Mason RP. L-tryptophan radical cation electron spin resonance studies: connecting solution-derived hyperfine coupling constants with protein spectral interpretations. J Am Chem Soc. 130: 6381-6387, 2008. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=18433127)
Bonini MG, Stadler K, Silva SO, Corbett J, Dore M, Petranka J, Fernandes DC, Tanaka LY, Duma D, Laurindo FRM, Mason RP. Constitutive nitric oxide synthase activation is a significant route for nitroglycerin-mediated vasodilation. Proceedings of the National Academy of Sciences of the United States of America 105(25):8569-8574, 2008. [Abstract](http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=18562300)