For the past 25 years, we have probed the enzymology of myeloperoxidase (MPO). This haem protein gives pus and phlegm their characteristic green tinge. MPO produces chlorine bleach from hydrogen peroxide and common salt.
The knowledge from this work has helped us understand how white blood cells called neutrophils use MPO to kill bacteria. It has also revealed that chlorine bleach and free radicals contribute to inflammation.
We have shown that chlorine bleach promotes inflammatory tissue damage in cystic fibrosis, asthma, rheumatoid arthritis, and cardiovascular disease. In collaboration with AstraZeneca, we have also developed specific inhibitors of MPO that are potential anti-inflammatory drugs.
Current research topics
Cystic Fibrosis
Heart Disease
Neutrophils
Radical Reactions
Myeloperoxidase
Biomarkers
Public Health Lectures
In the media
Professor Kettle was interviewed for Radio New Zealand's Our Changing World series in October 2014.
A white blood cell hunting & phagocytosing E coli.
Publications
Paumann-Page, M., Ashby, L. V., Khalilova, I., Magon, N. J., Hofbauer, S., Paton, L. N., … Kettle, A. J. (2023). Hypochlorous acid inactivates myeloperoxidase inside phagocytosing neutrophils. Redox Biochemistry & Chemistry, 5-6, 100008. doi: 10.1016/j.rbc.2023.100008
Journal - Research Article
Ashby, L. V., Flannery, M., Chua, I., & Kettle, A. J. (2023). Measuring oxidant production in phagosomes to identify abnormalities in neutrophil function. Free Radical Biology & Medicine, 201(Suppl. 1), (pp. 13). doi: 10.1016/j.freeradbiomed.2023.03.072
Conference Contribution - Published proceedings: Abstract
Magon, N. J., Turner, R., Kettle, A. J., & Winterbourn, C. C. (2023). Cross-linking between cysteine and lysine, tryptophan or tyrosine in peptides and proteins treated with hypochlorous acid and other reactive halogens. Redox Biochemistry & Chemistry. Advance online publication. doi: 10.1016/j.rbc.2023.100002
Journal - Research Article
Kettle, A. J., Ashby, L. V., Winterbourn, C. C., & Dickerhof, N. (2023). Superoxide: The enigmatic chemical chameleon in neutrophil biology [Invited review]. Immunological Reviews. Advance online publication. doi: 10.1111/imr.13183
Journal - Research Other
Swaminathan, A., Frampton, C. M., Borichevsky, G. M., Kettle, A. J., & Gearry, R. B. (2023). Response to "Evaluating discriminative accuracy of biomarkers in relation to binary study outcomes: First validate, then celebrate?" Journal of Crohn's & Colitis, 17, 147-148. doi: 10.1093/ecco-jcc/jjac126
Journal - Research 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, 112, 591-605. 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, 208, 979-990. 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, 90(3), e00530-21. 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
Swaminathan, A., Borichevsky, G. M., Edwards, T. S., Hirschfeld, E., Mules, T. C., Frampton, C. M. A., Day, A. S., Hampton, M. B., Kettle, A. J., & Gearry, R. B. (2022). Faecal myeloperoxidase as a biomarker of endoscopic activity in inflammatory bowel disease. Journal of Crohn's & Colitis, 16, 1862-1873. doi: 10.1093/ecco-jcc/jjac098
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
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
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
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
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
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
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
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