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Health Sciences profile

Professor Tony Kettle

PositionResearch Professor
DepartmentDepartment of Pathology and Biomedical Science (Christchurch)
Iwi affiliationTe Āti Haunui-a-Pāpārangi
QualificationsBSc(Hons), PhD(Otago), MSc(SFU), FRSNZ
Research summaryFree Radicals
TeachingPhD and Masters Students; BBioMedSci Honours

Research

Professor Kettle is a principal investigator in the Centre for Free Radical Research (CFRR) at the University of Otago, Christchurch. His research is focused on the enzymology of the haem enzyme myeloperoxidase and its impact of host defense and inflammatory tissue damage. This protein is responsible for the green tinge in pus and phlegm. It catalyzes the production of chlorine bleach from hydrogen peroxide and common salt.

The work of the CFRR has advanced the understanding of how the enzyme contributes to bacterial killing by white blood cells known as neutrophils. We have also demonstrated how hypohalous acids and free radicals are produced during inflammation and cause tissue damage. In clinical investigations we showed that chlorine bleach damages tissues during inflammation in rheumatoid arthritis, cystic fibrosis, asthma and cardiovascular disease. In collaboration with AstraZeneca, we identified potent inhibitors of myeloperoxidase that have potential as anti-inflammatory drugs.

In more recent work, we have shown that urate is a physiological substrate for myeloperoxidase. The enzyme uses hydrogen peroxide to oxidize urate to reactive electrophiles that propagate oxidative stress during inflammation by forming adducts with amine groups on proteins.

Publications

Ashby, L. V., Springer, R., Loi, V. V., Antelmann, H., Hampton, M. B., Kettle, A. J., & Dickerhof, N. (2022). Oxidation of bacillithiol during killing of Staphylococcus aureus USA300 inside neutrophil phagosomes. Journal of Leukocyte Biology. Advance online publication. doi: 10.1002/jlb.4hi1021-538rr

Smyth, L. C. D., Murray, H. C., Hill, M., van Leeuwen, E., Highet, B., Magon, N. J., … Mathiesen, S. N., Mockett, B., … Clarkson, A. N., … Abraham, W. C., Hughes, S. M., … Kettle, A. J., … Hampton, M. B. (2022). Neutrophil-vascular interactions drive myeloperoxidase accumulation in the brain in Alzheimer's disease. Acta Neuropathologicca Communications, 10, 38. doi: 10.1186/s40478-022-01347-2

Shearer, H. L., Kaldor, C. D., Hua, H., Kettle, A. J., Parker, H. A., & Hampton, M. B. (2022). Resistance of Streptococcus pneumoniae to hypothiocyanous acid generated by host peroxidases. Infection & Immunity. Advance online publication. doi: 10.1128/iai.00530-21

Edwards, T. S., Dickerhof, N., Magon, N. J., Paton, L. N., Sly, P. D., & Kettle, A. J. (2022). Formation of calprotectin-derived peptides in the airways of children with cystic fibrosis. Journal of Immunology. Advance online publication. doi: 10.4049/jimmunol.2001017

Parker, H. A., Dickerhof, N., Forrester, L., Ryburn, H., Smyth, L., Messens, J., Aung, H. L., Cook, G. M., Kettle, A. J., & Hampton, M. B. (2021). Mycobacterium smegmatis resists the bactericidal activity of hypochlorous acid produced in neutrophil phagosomes. Journal of Immunology, 206, 1901-1912. doi: 10.4049/jimmunol.2001084

Vissers, M. C. M., Hampton, M. B., & Kettle, A. J. (Eds.). (2018). Hydrogen peroxide metabolism in health and disease. Boca Raton, FL: CRC Press, 456p.

Edited Book - Research

Garai, D., Pálinkás, Z., Balla, J., Kettle, A. J., & Nagy, P. (2019). Measurements for sulfide-mediated inhibition of myeloperoxidase activity. In J. Beltowski (Ed.), Vascular effects of hydrogen sulfide: Methods and protocols: Methods in molecular biology (Vol. 2007). (pp. 179-203). New York, NY: Humana Press. doi: 10.1007/978-1-4939-9528-8_14

Chapter in Book - Research

Forbes, L. V., & Kettle, A. J. (2018). Myeloperoxidase: Unleashing the power of hydrogen peroxide. In M. C. M. Vissers, M. B. Hampton & A. J. Kettle (Eds.), Hydrogen peroxide metabolism in health and disease. (pp. 281-304). Boca Raton, FL: CRC Press.

Chapter in Book - Research

Kettle, A. J., & Winterbourn, C. C. (2016). Myeloperoxidase: Structure and function of the green heme peroxidase of neutrophils. In E. Raven & B. Dunford (Eds.), Heme peroxidases. (pp. 272-308). Cambridge, UK: Royal Society of Chemistry. doi: 10.1039/9781782622628-00272

Chapter in Book - Research

Winterbourn, C. C., van Dalen, C. J., Hampton, M. B., & Kettle, A. J. (2000). Reactions of myeloperoxidase and production of hypochlorous acid in neutrophil phagosomes. In P. E. Petrides & W. M. Nauseef (Eds.), The Peroxidase Multigene Family of Enzymes. (pp. 58-67). Berlin: Springer.

Chapter in Book - Research

McPherson, K. G., Kettle, A. J., & Winterbourn, C. C. (1997). Mechanism of activation of NFKB by hydrogen peroxide in Jurkat JR cells. In L. Montagnier, R. Olivier & C. Pasquier (Eds.), Oxidative Stress and Redox Regulation: Cellular Signalling, Aids, Cancer and Other Diseases. (pp. 83-87). New York: Marcel Dekker.

Chapter in Book - Research

Kettle, A. J., & Winterbourn, C. C. (1996). Reaction mechanisms of myeloperoxidase. In C. Obinger, U. Burner, R. Ebermann, C. Penel & H. Greppin (Eds.), Plant Peroxidases: Biochemistry and Physiology. (pp. 134-139). Geneva: University of Geneva.

Chapter in Book - Research

Winterbourn, C., & Kettle, T. (2013). Centre for Free Radical Research. In P. Joyce, G. Nicholls, K. Thomas & T. Wilkinson (Eds.), The Christchurch experience: 40 years of research and teaching. (pp. 75-78). Christchurch, New Zealand: University of Otago.

Chapter in Book - Other

Ashby, L. V., Springer, R., Loi, V. V., Antelmann, H., Hampton, M. B., Kettle, A. J., & Dickerhof, N. (2022). Oxidation of bacillithiol during killing of Staphylococcus aureus USA300 inside neutrophil phagosomes. Journal of Leukocyte Biology. Advance online publication. doi: 10.1002/jlb.4hi1021-538rr

Journal - Research Article

Edwards, T. S., Dickerhof, N., Magon, N. J., Paton, L. N., Sly, P. D., & Kettle, A. J. (2022). Formation of calprotectin-derived peptides in the airways of children with cystic fibrosis. Journal of Immunology. Advance online publication. doi: 10.4049/jimmunol.2001017

Journal - Research Article

Shearer, H. L., Kaldor, C. D., Hua, H., Kettle, A. J., Parker, H. A., & Hampton, M. B. (2022). Resistance of Streptococcus pneumoniae to hypothiocyanous acid generated by host peroxidases. Infection & Immunity. Advance online publication. doi: 10.1128/iai.00530-21

Journal - Research Article

Smyth, L. C. D., Murray, H. C., Hill, M., van Leeuwen, E., Highet, B., Magon, N. J., … Mathiesen, S. N., Mockett, B., … Clarkson, A. N., … Abraham, W. C., Hughes, S. M., … Kettle, A. J., … Hampton, M. B. (2022). Neutrophil-vascular interactions drive myeloperoxidase accumulation in the brain in Alzheimer's disease. Acta Neuropathologicca Communications, 10, 38. doi: 10.1186/s40478-022-01347-2

Journal - Research Article

Parker, H. A., Dickerhof, N., Forrester, L., Ryburn, H., Smyth, L., Messens, J., Aung, H. L., Cook, G. M., Kettle, A. J., & Hampton, M. B. (2021). Mycobacterium smegmatis resists the bactericidal activity of hypochlorous acid produced in neutrophil phagosomes. Journal of Immunology, 206, 1901-1912. doi: 10.4049/jimmunol.2001084

Journal - Research Article

Bathish, B., Paumann-Page, M., Paton, L. N., Kettle, A. J., & Winterbourn, C. C. (2020). Peroxidasin mediates bromination of tyrosine residues in the extracellular matrix. Journal of Biological Chemistry, 295(36), 12697-12705. doi: 10.1074/jbc.RA120.014504

Journal - Research Article

Carr, A. C., Spencer, E., Hoskin, T. S., Rosengrave, P., Kettle, A. J., & Shaw, G. (2020). Circulating myeloperoxidase is elevated in septic shock and is associated with systemic organ failure and mortality in critically ill patients. Free Radical Biology & Medicine, 152, 462-468. doi: 10.1016/j.freeradbiomed.2019.11.004

Journal - Research Article

Dickerhof, N., Huang, J., Min, E., Michaëlsson, E., Lindstedt, E.-L., Pearson, J. F., Kettle, A. J., & Day, B. J. (2020). Myeloperoxidase inhibition decreases morbidity and oxidative stress in mice with cystic fibrosis-like lung inflammation. Free Radical Biology & Medicine, 152, 91-99. doi: 10.1016/j.freeradbiomed.2020.03.001

Journal - Research Article

Dickerhof, N., Paton, L., & Kettle, A. J. (2020). Oxidation of bacillithiol by myeloperoxidase-derived oxidants. Free Radical Biology & Medicine, 158, 74-83. doi: 10.1016/j.freeradbiomed.2020.06.009

Journal - Research Article

Schneider, M., Hannaway, R. F., Lamichhane, R., de la Harpe, S. M., Tyndall, J. D. A., Vernall, A. J., Kettle, A. J., & Ussher, J. E. (2020). Neutrophils suppress mucosal-associated invariant T cells in humans. European Journal of Immunology, 50, 643-655. doi: 10.1002/eji.201948394

Journal - Research Article

Cheng, D., Talib, J., Stanley, C. P., Rashid, I., Michaëlsson, E., Lindstedt, E.-L., … Kettle, A. J., … Stocker, R. (2019). Inhibition of MPO (myeloperoxidase) attenuates endothelial dysfunction in mouse models of vascular inflammation and atherosclerosis. Arteriosclerosis, Thrombosis, & Vascular Biology, 39, 1448-1457. doi: 10.1161/atvbaha.119.312725

Journal - Research Article

Dickerhof, N., Isles, V., Pattemore, P., Hampton, M. B., & Kettle, A. J. (2019). Exposure of Pseudomonas aeruginosa to bactericidal hypochlorous acid during neutrophil phagocytosis is compromised in cystic fibrosis. Journal of Biological Chemistry, 294(36), 13502-13514. doi: 10.1074/jbc.RA119.009934

Journal - Research Article

Filbey, K. J., Camberis, M., Chandler, J., Turner, R., Kettle, A. J., Eichenberger, R. M., … Le Gros, G. (2019). Intestinal helminth infection promotes IL-5- and CD4+ T cell-dependent immunity in the lung against migrating parasites. Mucosal Immunology, 12, 352-362. doi: 10.1038/s41385-018-0102-8

Journal - Research Article

Hoskin, T. S., Crowther, J. M., Cheung, J., Epton, M. J., Sly, P. D., Elder, P. A., … Kettle, A. J., & Dickerhof, N. (2019). Oxidative cross-linking of calprotectin occurs in vivo, altering its structure and susceptibility to proteolysis. Redox Biology, 24, 101202. doi: 10.1016/j.redox.2019.101202

Journal - Research Article

Albrett, A. M., Ashby, L. V., Dickerhof, N., Kettle, A. J., & Winterbourn, C. C. (2018). Heterogeneity of hypochlorous acid production in individual neutrophil phagosomes revealed by a rhodamine-based probe. Journal of Biological Chemistry, 293(40), 15715-15724. doi: 10.1074/jbc.RA118.004789

Journal - Research Article

Bathish, B., Turner, R., Paumann-Page, M., Kettle, A. J., & Winterbourn, C. C. (2018). Characterisation of peroxidasin activity in isolated extracellular matrix and direct detection of hypobromous acid formation. Archives of Biochemistry & Biophysics, 646, 120-127. doi: 10.1016/j.abb.2018.03.038

Journal - Research Article

Coker, M. S., Forbes, L. V., Plowman-Holmes, M., Murdoch, D. R., Winterbourn, C. C., & Kettle, A. J. (2018). Interactions of staphyloxanthin and enterobactin with myeloperoxidase and reactive chlorine species. Archives of Biochemistry & Biophysics, 646, 80-89. doi: 10.1016/j.abb.2018.03.039

Journal - Research Article

Das, A. B., Sadowska-Bartosz, I., Königstorfer, A., Kettle, A. J., & Winterbourn, C. C. (2018). Superoxide dismutase protects ribonucleotide reductase from inactivation in yeast. Free Radical Biology & Medicine, 116, 114-122. doi: 10.1016/j.freeradbiomed.2018.01.001

Journal - Research Article

Forbes, L. V., & Kettle, A. J. (2018). A multi-substrate assay for finding physiologically effective inhibitors of myeloperoxidase. Analytical Biochemistry, 544, 13-21. doi: 10.1016/j.ab.2017.12.022

Journal - Research Article

Khalilova, I. S., Dickerhof, N., Mocatta, T. J., Bhagra, C. J., McClean, D. R., Obinger, C., & Kettle, A. J. (2018). A myeloperoxidase precursor, pro-myeloperoxidase, is present in human plasma and elevated in cardiovascular disease patients. PLoS ONE, 13(3), e0192952. doi: 10.1371/journal.pone.0192952

Journal - Research Article

Rashid, I., Maghzal, G. J., Chen, Y.-C., Cheng, D., Talib, J., Newington, D., … Kettle, A. J., … Stocker, R. (2018). Myeloperoxidase is a potential molecular imaging and therapeutic target for the identification and stabilization of high-risk atherosclerotic plaque. European Heart Journal, 39(35), 3301-3310. doi: 10.1093/eurheartj/ehy419

Journal - Research Article

Turner, R., Brennan, S. O., Ashby, L. V., Dickerhof, N., Hamzah, M. R., Pearson, J. F., Stamp, L. K., & Kettle, A. J. (2018). Conjugation of urate-derived electrophiles to proteins during normal metabolism and inflammation. Journal of Biological Chemistry, 293(51), 19886-19898. doi: 10.1074/jbc.RA118.005237

Journal - Research Article

Dickerhof, N., Pearson, J. F., Hoskin, T. S., Berry, L. J., Turner, R., Sly, P. D., Kettle, A. J., on behalf of AREST CF. (2017). Oxidative stress in early cystic fibrosis lung disease is exacerbated by airway glutathione deficiency. Free Radical Biology & Medicine, 113, 236-243. doi: 10.1016/j.freeradbiomed.2017.09.028

Journal - Research Article

Dickerhof, N., Turner, R., Khalilova, I., Fantino, E., Sly, P. D., Kettle, A. J., on behalf of AREST CF. (2017). Oxidized glutathione and uric acid as biomarkers of early cystic fibrosis lung disease. Journal of Cystic Fibrosis, 16(2), 214-221. doi: 10.1016/j.jcf.2016.10.012

Journal - Research Article

Green, J. N., Chapman, A. L. P., Bishop, C. J., Winterbourn, C. C., & Kettle, A. J. (2017). Neutrophil granule proteins generate bactericidal ammonia chloramine on reaction with hydrogen peroxide. Free Radical Biology & Medicine, 113, 363-371. doi: 10.1016/j.freeradbiomed.2017.10.343

Journal - Research Article

Pullar, J. M., Carr, A. C., Bozonet, S. M., Rosengrave, P., Kettle, A. J., & Vissers, M. C. M. (2017). Elevated seminal plasma myeloperoxidase is associated with a decreased sperm concentration in young men. Andrology, 5(3), 431-438. doi: 10.1111/andr.12327

Journal - Research Article

Kato, Y., Oki, K., Suga, N., Ono, S., Ishisaka, A., Miura, Y., … Kettle, A. J. (2016). A novel quinone derived from 5-hydroxyindoleacetic acid reacts with protein: Possible participation of oxidation of serotonin and its metabolite in the development of atherosclerosis. Free Radical Biology & Medicine, 101, 500-510. doi: 10.1016/j.freeradbiomed.2016.11.023

Journal - Research Article

Terrill, J. R., Duong, M. N., Turner, R., Le Guiner, C., Boyatzis, A., Kettle, A. J., … Arthur, P. G. (2016). Levels of inflammation and oxidative stress, and a role for taurine in dystropathology of the Golden Retriever Muscular Dystrophy dog model for Duchenne Muscular Dystrophy. Redox Biology, 9, 276-286. doi: 10.1016/j.redox.2016.08.016

Journal - Research Article

Chandler, J. D., Min, E., Huang, J., McElroy, C. S., Dickerhof, N., Mocatta, T., … Kettle, A. J., … Day, B. J. (2015). Antiinflammatory and antimicrobial effects of thiocyanate in a cystic fibrosis mouse model. American Journal of Respiratory Cell & Molecular Biology, 53(2), 193-205. doi: 10.1165/rcmb.2014-0208OC

Journal - Research Article

Dickerhof, N., Schindler, L., Bernhagen, J., Kettle, A. J., & Hampton, M. B. (2015). Macrophage migration inhibitory factor (MIF) Is rendered enzymatically inactive by myeloperoxidase-derived oxidants but retains its immunomodulatory function. Free Radical Biology & Medicine, 89, 498-511. doi: 10.1016/j.freeradbiomed.2015.09.009

Journal - Research Article

Magon, N. J., Turner, R., Gearry, R. B., Hampton, M. B., Sly, P. D., & Kettle, A. J. (2015). Oxidation of calprotectin by hypochlorous acid prevents chelation of essential metal ions and allows bacterial growth: Relevance to infections in cystic fibrosis. Free Radical Biology & Medicine, 86, 133-144. doi: 10.1016/j.freeradbiomed.2015.05.022

Journal - Research Article

Odobasic, D., Muljadi, R. C. M., O'Sullivan, K. M., Kettle, A. J., Dickerhof, N., Summers, S. A., … Holdsworth, S. R. (2015). Suppression of autoimmunity and renal disease in pristane-induced lupus by myeloperoxidase. Arthritis & Rheumatology, 67(7), 1868-1880. doi: 10.1002/art.39109

Journal - Research Article

Patrício, E. S., Prado, F. M., da Silva, R. P., Carvalho, L. A. C., Prates, M. V. C., Dadamos, T., … Kettle, A. J., & Meotti, F. C. (2015). Chemical characterization of urate hydroperoxide, A pro-oxidant intermediate generated by urate oxidation in inflammatory and photoinduced processes. Chemical Research in Toxicology, 28(8), 1556-1566. doi: 10.1021/acs.chemrestox.5b00132

Journal - Research Article

Wilkie-Grantham, R. P., Magon, N. J., Harwood, D. T., Kettle, A. J., Vissers, M. C., Winterbourn, C. C., & Hampton, M. B. (2015). Myeloperoxidase-dependent lipid peroxidation promotes the oxidative modification of cytosolic proteins in phagocytic neutrophils. Journal of Biological Chemistry, 290(15), 9896-9905. doi: 10.1074/jbc.M114.613422

Journal - Research Article

Das, A. B., Nauser, T., Koppenol, W. H., Kettle, A. J., Winterbourn, C. C., & Nagy, P. (2014). Rapid reaction of superoxide with insulin-tyrosyl radicals to generate a hydroperoxide with subsequent glutathione addition. Free Radical Biology & Medicine, 70, 86-95. doi: 10.1016/j.freeradbiomed.2014.02.006

Journal - Research Article

Dickerhof, N., Magon, N. J., Tyndall, J. D. A., Kettle, A. J., & Hampton, M. B. (2014). Potent inhibition of macrophage migration inhibitory factor (MIF) by myeloperoxidase-dependant oxidation of epicatechins. Biochemical Journal, 462(2), 303-314. doi: 10.1042/BJ20140612

Journal - Research Article

Green, J. N., Kettle, A. J., & Winterbourn, C. C. (2014). Protein chlorination in neutrophil phagosomes and correlation with bacterial killing. Free Radical Biology & Medicine, 77, 49-56. doi: 10.1016/j.freeradbiomed.2014.08.013

Journal - Research Article

Kato, Y., Ono, S., Kitamoto, N., & Kettle, A. J. (2014). Covalent modification of cytoskeletal proteins in neuronal cells by tryptamine–4,5-dione. Redox Biology, 2, 983-990. doi: 10.1016/j.redox.2014.08.004

Journal - Research Article

Kettle, A. J., Albrett, A. M., Chapman, A. L., Dickerhof, N., Forbes, L. V., Khalilova, I., & Turner, R. (2014). Measuring chlorine bleach in biology and medicine. Biochimica et Biophysica Acta: General Subjects, 1840(2), 781-793. doi: 10.1016/j.bbagen.2013.07.004

Journal - Research Article

Kettle, A. J., Turner, R., Gangell, C. L., Harwood, D. T., Khalilova, I. S., Chapman, A. L., Winterbourn, C. C., … on behalf of AREST CF. (2014). Oxidation contributes to low glutathione in the airways of children with cystic fibrosis. European Respiratory Journal, 44, 122-129. doi: 10.1183/09031936.00170213

Journal - Research Article

Maghzal, G. J., Cergol, K. M., Shengule, S. R., Suarna, C., Newington, D., Kettle, A. J., … Stocker, R. (2014). Assessment of myeloperoxidase activity by the conversion of hydroethidine to 2-chloroethidium. Journal of Biological Chemistry, 289(9), 5580-5595. doi: 10.1074/jbc.M113.539486

Journal - Research Article

Rees, M. D., Maiocchi, S. L., Kettle, A. J., & Thomas, S. R. (2014). Mechanism and regulation of peroxidase-catalyzed nitric oxide consumption in physiological fluids: Critical protective actions of ascorbate and thiocyanate. Free Radical Biology & Medicine, 72, 91-103. doi: 10.1016/j.freeradbiomed.2014.03.037

Journal - Research Article

Ronsein, G. E., Winterbourn, C. C., Di Mascio, P., & Kettle, A. J. (2014). Cross-linking methionine and amine residues with reactive halogen species. Free Radical Biology & Medicine, 70, 278-287. doi: 10.1016/j.freeradbiomed.2014.01.023

Journal - Research Article

Seidel, A., Parker, H., Turner, R., Dickerhof, N., Khalilova, I. S., Wilbanks, S. M., Kettle, A. J., & Jameson, G. N. L. (2014). Uric acid and thiocyanate as competing substrates of lactoperoxidase. Journal of Biological Chemistry, 289(32), 21937-21949. doi: 10.1074/jbc.M113.544957

Journal - Research Article

Stamp, L. K., Turner, R., Khalilova, I. S., Zhang, M., Drake, J., Forbes, L. V., & Kettle, A. J. (2014). Myeloperoxidase and oxidation of uric acid in gout: Implications for the clinical consequences of hyperuricaemia. Rheumatology, 53(11), 1958-1965. doi: 10.1093/rheumatology/keu218

Journal - Research Article

Chapman, A. L. P., Mocatta, T. J., Shiva, S., Seidel, A., Chen, B., Khalilova, I., Paumann-Page, M. E., Jameson, G. N. L., Winterbourn, C. C., & Kettle, A. J. (2013). Ceruloplasmin is an endogenous inhibitor of myeloperoxidase. Journal of Biological Chemistry, 288(9), 6465-6477. doi: 10.1074/jbc.M112.418970

Journal - Research Article

Forbes, L. V., Sjögren, T., Auchère, F., Jenkins, D. W., Thong, B., Laughton, D., … Turner, R., … Kettle, A. J. (2013). Potent reversible inhibition of myeloperoxidase by aromatic hydromates. Journal of Biological Chemistry, 288(51), 36636-36647. doi: 10.1074/jbc.M113.507756

Journal - Research Article

Klebanoff, S. J., Kettle, A. J., Rosen, H., Winterbourn, C. C., & Nauseef, W. M. (2013). Myeloperoxidase: A front-line defender against phagocytosed microorganisms. Journal of Leukocyte Biology, 93(2), 185-198. doi: 10.1189/jlb.0712349

Journal - Research Article

Paumann-Page, M., Furtmüller, P. G., Hofbauer, S., Paton, L. N., Obinger, C., & Kettle, A. J. (2013). Inactivation of human myeloperoxidase by hydrogen peroxide. Archives of Biochemistry & Biophysics, 539(1), 51-62. doi: 10.1016/j.abb.2013.09.004

Journal - Research Article

Winterbourn, C. C., & Kettle, A. J. (2013). Redox reactions and microbial killing in the neutrophil phagosome. Antioxidants & Redox Signaling, 18(6), 642-660. doi: 10.1089/ars.2012.4827

Journal - Research Article

Forbes, L. V., Furtmüller, P. G., Khalilova, I., Turner, R., Obinger, C., & Kettle, A. J. (2012). Isoniazid as a substrate and inhibitor of myeloperoxidase: Identification of amine adducts and the influence of superoxide dismutase on their formation. Biochemical Pharmacology, 84(7), 949-960. doi: 10.1016/j.bcp.2012.07.020

Journal - Research Article

Hock, B. D., Taylor, K. G., Cross, N. B., Kettle, A. J., Hampton, M. B., & McKenzie, J. L. (2012). Effect of activated human polymorphonuclear leucocytes on T lymphocyte proliferation and viability. Immunology, 137(3), 249-258. doi: 10.1111/imm.12004

Journal - Research Article

Kato, Y., Peskin, A. V., Dickerhof, N., Harwood, D. T., & Kettle, A. J. (2012). Myeloperoxidase catalyzes the conjugation of serotonin to thiols via free radicals and tryptamine-4,5-dione. Chemical Research in Toxicology, 25(11), 2322-2332. doi: 10.1021/tx300218f

Journal - Research Article

Parker, H., Albrett, A. M., Kettle, A. J., & Winterbourn, C. C. (2012). Myeloperoxidase associated with neutrophil extracellular traps is active and mediates bacterial killing in the presence of hydrogen peroxide. Journal of Leukocyte Biology, 91(3), 369-376. doi: 10.1189/jlb.0711387

Journal - Research Article

Parker, H., Dragunow, M., Hampton, M. B., Kettle, A. J., & Winterbourn, C. C. (2012). Requirements for NADPH oxidase and myeloperoxidase in neutrophil extracellular trap formation differ depending on the stimulus. Journal of Leukocyte Biology, 92(4), 841-849. doi: 10.1189/jlb.1211601

Journal - Research Article

Stamp, L. K., Khalilova, I., Tarr, J. M., Senthilmohan, R., Turner, R., Haigh, R. C., … Kettle, A. J. (2012). Myeloperoxidase and oxidative stress in rheumatoid arthritis. Rheumatology, 51(10), 1796-1803. doi: 10.1093/rheumatology/kes193

Journal - Research Article

Kettle, A. J., Maroz, A., Woodroffe, G., Winterbourn, C. C., & Anderson, R. F. (2011). Spectral and kinetic evidence for reaction of superoxide with compound I of myeloperoxidase. Free Radical Biology & Medicine, 51(12), 2190-2194. doi: 10.1016/j.freeradbiomed.2011.09.019

Journal - Research Article

Meotti, F. C., Jameson, G. N. L., Turner, R., Harwood, D. T., Stockwell, S., Rees, M., … Kettle, A. J. (2011). Urate as a physiological substrate for myeloperoxidase: Implications for hyperuricemia and inflammation. Journal of Biological Chemistry, 286(15), 12901-12911. doi: 10.1074/jbc.M110.172460

Journal - Research Article

Moya-Olano, L., Milne, H. M., Robinson, J. M., Hill, J. V., Frampton, C. M., Abbott, H. F., Turner, R., Kettle, A. J., & Endre, Z. H. (2011). Trientine and renin-angiotensin system blockade ameliorate progression of glomerular morphology in hypertensive experimental diabetic nephropathy. Pathology International, 61(11), 652-661. doi: 10.1111/j.1440-1827.2011.02721.x

Journal - Research Article

Tidén, A.-K., Sjögren, T., Svensson, M., Bernlind, A., Senthilmohan, R., Auchère, F., … Forbes, L. V., Magon, N. J., Paton, L. N., Jameson, G. N. L., … Kettle, A. J. (2011). 2-Thioxanthines are mechanism-based inactivators of myeloperoxidase that block oxidative stress during inflammation. Journal of Biological Chemistry, 286(43), 37578-37589. doi: 10.1074/jbc.M111.266981

Journal - Research Article

Das, A. B., Nagy, P., Abbott, H. F., Winterbourn, C. C., & Kettle, A. J. (2010). Reactions of superoxide with the myoglobin tyrosyl radical. Free Radical Biology & Medicine, 48, 1540-1547. doi: 10.1016/j.freeradbiomed.2010.02.039

Journal - Research Article

Koelsch, M., Mallak, R., Graham, G. G., Kajer, T., Milligan, M. K., Nguyen, L. Q., … Kettle, A. J., … Davies, M. J. (2010). Acetaminophen (paracetamol) inhibits myeloperoxidase-catalyzed oxidant production and biological damage at therapeutically achievable concentrations. Biochemical Pharmacology, 79, 1156-1164. doi: 10.1016/j.bcp.2009.11.024

Journal - Research Article

Marshall, C. J., Nallaratnam, M., Mocatta, T., Smyth, D., Richards, M., Elliott, J. M., Blake, J., Winterbourn, C. C., Kettle, A. J., & McClean, D. R. (2010). Factors influencing local and systemic levels of plasma myeloperoxidase in ST-segment elevation acute myocardial infarction. American Journal of Cardiology, 106(3), 316-322. doi: 10.1016/j.amjcard.2010.03.028

Journal - Research Article

Nagy, P., Kettle, A. J., & Winterbourn, C. C. (2010). Neutrophil-mediated oxidation of enkephalins via myeloperoxidase-dependent addition of superoxide. Free Radical Biology & Medicine, 49, 792-799. doi: 10.1016/j.freeradbiomed.2010.05.033

Journal - Research Article

Thomson, E., Brennan, S., Senthilmohan, R., Gangell, C. L., Chapman, A. L., Sly, P., & Kettle, A. J. (2010). Identifying peroxidases and their oxidants in the early pathology of cystic fibrosis. Free Radical Biology & Medicine, 49(9), 1354-1360. doi: 10.1016/j.freeradbiomed.2010.07.010

Journal - Research Article

Ximenes, V. F., Maghzal, G. J., Turner, R., Kato, Y., Winterbourn, C. C., & Kettle, A. J. (2010). Serotonin as a physiological substrate for myeloperoxidase and its superoxide-dependent oxidation to cytotoxic tryptamine-4,5-dione. Biochemical Journal, 425(1), 285-293. doi: 10.1042/BJ20090776

Journal - Research Article

Chapman, A. L. P., Skaff, O., Senthilmohan, R., Kettle, A. J., & Davies, M. J. (2009). Hypobromous acid and bromamine production by neutrophils and modulation by superoxide. Biochemical Journal, 417(3), 773-781. doi: 10.1042/BJ20071563

Journal - Research Article

Harwood, D. T., Kettle, A. J., Brennan, S., & Winterbourn, C. C. (2009). Simultaneous determination of reduced glutathione, glutathione disulphide and glutathione sulphonamide in cells and physiological fluids by isotope dilution liquid chromatography-tandem mass spectrometry. Journal of Chromatography B, 877, 3393-3399. doi: 10.1016/j.jchromb.2009.04.018

Journal - Research Article

Nagy, P., Kettle, A. J., & Winterbourn, C. C. (2009). Superoxide-mediated formation of tyrosine hydroperoxides and methionine sulfoxide in peptides through radical addition and intramolecular oxygen transfer. Journal of Biological Chemistry, 284(22), 14723-14733. doi: 10.1074/jbc.M809396200

Journal - Research Article

Peskin, A. V., Turner, R., Maghzal, G. J., Winterbourn, C. C., & Kettle, A. J. (2009). Oxidation of methionine to dehydromethionine by reactive halogen species generated by neutrophils. Biochemistry, 48(42), 10175-10182. doi: 10.1021/bi901266w

Journal - Research Article

van Dalen, C. J., Aldridge, R. E., Chan, T., Senthilmohan, R., Hancox, R. J., Cowan, J. O., Taylor, D. R., Town, G. I., & Kettle, A. J. (2009). Bromotyrosines in sputum proteins and treatment effects of terbutaline and budesonide in asthma. Annals of Allergy, Asthma, & Immunology, 103(4), 348-353.

Journal - Research Article

Coker, M. S. A., Hu, W.-P., Senthilmohan, S. T., & Kettle, A. J. (2008). Pathways for the decay of organic dichloramines and liberation of antimicrobial chloramine gases. Chemical Research in Toxicology, 21(12), 2334-2343. doi: 10.1021/tx800232v

Journal - Research Article

Harwood, D. T., Nimmo, S. L., Kettle, A. J., Winterbourn, C. C., & Ashby, M. T. (2008). Molecular structure and dynamic properties of a sulfonamide derivative of glutathione that is produced under conditions of oxidative stress by hypochlorous acid. Chemical Research in Toxicology, 21(5), 1011-1016.

Journal - Research Article

Meotti, F. C., Senthilmohan, R., Harwood, D. T., Missau, F. C., Pizzolatti, M. G., & Kettle, A. J. (2008). Myricitrin as a substrate and inhibitor of myeloperoxidase: Implications for the pharmacological effects of flavonoids. Free Radical Biology & Medicine, 44(1), 109-120. doi: 10.1016/j.freeradbiomed.2007.09.017

Journal - Research Article

Senthilmohan, S. T., Kettle, A. J., McEwan, M. J., Dummer, J., Edwards, S. J., Wilson, P. F., & Epton, M. J. (2008). Detection of monobromamine, monochloramine and dichloramine using selected ion flow tube mass spectrometry and their relevance as breath markers. Rapid Communications in Mass Spectrometry, 22(5), 677-681. doi: 10.1002/rcm.3418

Journal - Research Article

Åkerström, B., Maghzal, G. J., Winterbourn, C. C., & Kettle, A. J. (2007). The lipocalin α1-microglobulin has radical scavenging activity. Journal of Biological Chemistry, 282(43), 31493-31503.

Journal - Research Article

Kettle, A. J., Anderson, R. F., Hampton, M. B., & Winterbourn, C. C. (2007). Reactions of superoxide with myeloperoxidase. Biochemistry, 46, 4888-4897.

Journal - Research Article

Brooks, W. M., Lash, H., Kettle, A. J., & Epton, M. J. (2006). Optimising hydrogen peroxide measurement in exhaled breath condensate. Redox Report, 11(2), 78-84.

Journal - Research Article

Harwood, D. T., Kettle, A. J., & Winterbourn, C. C. (2006). Production of glutathione sulfonamide and dehydroglutathione from GSH by myeloperoxidase-derived oxidants and detection using a novel LC-MS/MS method. Biochemical Journal, 399, 161-168.

Journal - Research Article

Senthilmohan, R., & Kettle, A. J. (2006). Bromination and chlorination reactions of myeloperoxidase at physiological concentrations of bromide and chloride. Archives of Biochemistry & Biophysics, 445, 235-244.

Journal - Research Article

van Dalen, C. J., Winterbourn, C. C., & Kettle, A. J. (2006). Mechanism of nitrite oxidation by eosinophil peroxidase: Implications for oxidant production and nitration by eosinophils. Biochemical Journal, 394, 707-713.

Journal - Research Article

Winterbourn, C. C., Hampton, M. B., Livesey, J. H., & Kettle, A. J. (2006). Modeling the reactions of superoxide and myeloperoxidase in the neutrophil phagosome: Implications for microbial killing. Journal of Biological Chemistry, 281(52), 39860-39869.

Journal - Research Article

Dypbukt, J. M., Bishop, C., Brooks, W. M., Thong, B., Eriksson, H., & Kettle, A. J. (2005). A sensitive and selective assay for chloramine production by myeloperoxidase. Free Radical Biology & Medicine, 39, 1468-1477.

Journal - Research Article

Kettle, A. J., & Winterbourn, C. C. (2005). Do neutrophils produce ozone? An appraisal of current evidence. BioFactors, 24, 41-45.

Journal - Research Article

Ximenes, V. F., Silva, S., Rodrigues, M. R., Catalani, L. H., Maghzal, G. J., Kettle, A. J., & Campa, A. (2005). Superoxide-dependent oxidation of melatonin by myeloperoxidase. Journal of Biological Chemistry, 280(46), 38160-38169.

Journal - Research Article

Kettle, A. J., Chan, T., Osberg, I., Senthilmohan, R., Chapman, A. L. P., Mocatta, T. J., & Wagener, J. S. (2004). Myeloperoxidase and protein oxidation in the airways of young children with cystic fibrosis. American Journal of Respiratory & Critical Care Medicine, 170, 1317-1323.

Journal - Research Article

Kettle, A. J., Clark, B. M., & Winterbourn, C. C. (2004). Superoxide converts indigo carmine to isatin sulfonic acid. Journal of Biological Chemistry, 279(18), 18521-18525.

Journal - Research Article

Winterbourn, C. C., & Kettle, A. J. (2004). Reactions of superoxide with myeloperoxidase and its products. Japanese Journal of Infectious Diseases, 57, S31-S33.

Journal - Research Article

Buss, I. H., Senthilmohan, R., Darlow, B. A., Mogridge, N., Kettle, A. J., & Winterbourn, C. C. (2003). 3-Chlorotyrosine as a marker of protein damage by myeloperoxidase in tracheal aspirates from preterm infants: Association with adverse respiratory outcome. Pediatric Research, 53(3), 455-462.

Journal - Research Article

Chapman, A. L. P., Winterbourn, C. C., Brennan, S., Jordan, T. W., & Kettle, A. J. (2003). Characterization of non-covalent oligomers of proteins treated with hypochlorous acid. Biochemical Journal, 375, 33-40.

Journal - Research Article

Winterbourn, C. C., & Kettle, A. J. (2003). Radical-radical reactions of superoxide: A potential route to toxicity. Biochemical & Biophysical Research Communications, 305, 729-736.

Journal - Research Article

Aldridge, R. E., Chan, T. P., van Dalen, C. J., Senthilmohan, R., Winn, M., Venge, P., Town, G. I., & Kettle, A. J. (2002). Eosinophil peroxidase produces hypobromous acid in the airways of stable asthmatics. Free Radical Biology & Medicine, 33(6), 847-856.

Journal - Research Article

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