Dr Jon Hazeldine BSc (Hons), MSc, PhD, AFHEA

Dr Jon Hazeldine

Institute of Inflammation and Ageing
Postdoctoral Research Fellow

Contact details

Institute of Inflammation and Ageing
University of Birmingham Research Labs
Queen Elizabeth Hospital
Mindelsohn Way
B15 2WB

Dr Jon Hazeldine is a trained immunologist with a long-standing interest in how major trauma and thermal injury modulates the innate immune system.

His research is focussed primarily around understanding the mechanisms that underlie the immediate (<1 hour), acute (4-72 hours) and persistent (up to 1-year) state of systemic immuneparesis that develops in severely injured patients and its relationship with such clinical outcomes as sepsis and multiple organ dysfunction.

ResearchGate Profile


  • Associate Fellow of the Higher Education Academy, 2018.
  • PhD in Immunology, University of Birmingham, 2013.
  • MSc in Immunology, University of Birmingham, 2008.
  • BSc (Hons) in Human Biology, University of Birmingham, 2007.


Dr Hazeldine graduated from the University of Birmingham in 2007 with a BSc (Hons) in Human Biology before undertaking an MSc in Immunology in 2008 during which he studied the effect of cyclin dependent kinase inhibitors on neutrophil lifespan. Dr Hazeldine then joined the research group of Professor Janet M. Lord for his PhD studies that investigated the effect of human ageing on the function of the innate immune system, focussing specifically upon the cytotoxic activities of natural killer cells and neutrophils. Since completing his doctorate, Dr Hazeldine has taken his interest in innate immunity into the setting of major trauma and burns, where he explores the short (hours-days) and long (weeks, months and years) term effects of severe injury on the immune system and how this influences patient outcomes.

Via a collaboration with pre-hospital emergency care paramedics and the Midlands Air Ambulance Charity, Dr Hazeldine is currently the lead laboratory investigator of the “Golden Hour” project, a unique study that acquires blood samples from major trauma patients at the scene of their injury. Acquired within 1-hour of an emergency 999 call, the analysis of these blood samples has revealed novel insights into the immune and inflammatory response to major trauma, with evidence of systemic immune suppression detectable prior to a patients arrival to hospital.



  • BSc Year 2, Immunity and Infection.
  • BSc Year 2, Stem Cells and Genetic Inheritance.
  • BSc Year 3, The Biology of Ageing.


  • MSc Trauma Science – Critical Care, Torso Trauma and Burns Management.
  • MSc Immunology and Immunotherapy: Inflammation and Cell Migration.
  • MSci Y4, Clinical Haematology.
  • MPharm: Health, Disease and Therapeutics.
  • MBChB Year 2 Professional and Academic Skills.

Postgraduate supervision

During his PhD and postdoctoral studies, Dr Hazeldine has been involved in the laboratory supervision of:

  • BSc students (>12)
  • MSc students (4)
  • PhD students (2)


Research themes

  • The effect of major trauma on innate immunity.
  • Mechanisms underlying trauma-induced immune suppression.
  • The immune and inflammatory response to thermal injury.
  • How the immune and inflammatory response to severe injury influences patient outcomes (e.g. development of sepsis).

Other activities


  • Co-author of an original research manuscript that won the A.L.Copley Best Paper Prize for papers published in the Journal of Clinical Hemorheology and Microcirculation in 2019.
  • Primary author of “Primary adrenal insufficiency is associated with impaired natural killer cell function: a potential link to increased mortality”, which was the most downloaded original research paper across all issues of the European Journal of Endocrinology published during 2017.
  • Awarded prize for best student. MSc immunology. University of Birmingham (2008)
  • Received the Medawar Prize in Human Biology, which is awarded annually to the student, who having specialised in Human Biology, achieves the most outstanding performance in the final Honours examination for the degree of BSc in Human Biology (2007).



Foster MA, Bentley C, Hazeldine J, Acharjee A, Nahman O, Shen-Orr SS, Lord JM and Duggal NA (2022), Traumatic injury induces a prematurely aged immune phenotype with increased risk of sepsis. Immunity and Ageing. 19 (1):60.

Belchamber KBR*, Thein OS*, Hazeldine J, Grudzinska FS, Faniyi A, Hughes MJ, Jasper AE, Crowley L, Yip KP, Lugg S, Sapey E, Parekh D, Thickett DR and Scott A (2022), Dysregulated neutrophil phenotype and function in hospitalised non-ICU COVID-19 pneumonia. Cells. 11 (18):2901.

Altarrah K, Tan P, Acharjee A, Hazeldine J, Torlinska B, Wilson Y, Torlinski T, Moiemen N and Lord JM, (2022). Differential benefits of steroid therapies in adults following major burn injury. Journal of Plastic, Reconstructive and Aesthetic Surgery. 75 (8):2616-2624.

Acharjee A*, Hazeldine J*, Bazarova A, Deenadayalu L, Zhang J, Bentley C, Russ D, Lord JM, Gkoutos GV, Young SP, Foster MA (2021), Integration of metabolomic and clinical data improves the prediction of intensive care unit length of stay following major traumatic injury. Metabolites. 12 (1):29.

Hazeldine J, McGee K, Altarrah K, Hassouna T, Patel K, Imran R, Bishop JRB, Bamford A, Barnes D, Wilson Y, Harrison P, Lord JM and Moiemen NS (2021), Multicentre, Prospective Study to Examine the Relationship between Neutrophil Function and Sepsis in Adults and Children with Severe Thermal Injuries: a protocol for the Scientific Investigation of the Biological Pathways Following Thermal Injury-2 (SIFTI-2) study. BMJ Open. 11 (10) e052035.

Cato LD, Bailiff B, Price J, Ermogeneous C, Hazeldine J, Lester W, Lowe G, Wearn C, Bishop JRB, Lord JM and Harrison P (2021), Heparin resistance in severe thermal injury: A prospective cohort study. Burns and Trauma.

Bentley C, Potter C, Yakoub KM, Brock K, Homer V, Toman E, Taylor AE, Shaheen F, Gilligan LC, Athwal A, Barton D, Carrera R, Young K, Desai A, McGee K, Ermogenous C, Sur G, Grieg C, Hazeldine J, Arlt W, Lord JM and Foster MA (2021), . A prospective, phase II, single-centre, cross-sectional, randomised study investigating Dehydroepiandrosterone supplementation and its Profile in Trauma: ADaPT. BMJ Open. 11 (7):e040823.

Hazeldine J, Dinsdale RJ, Naumann DN, Acharjee A, Bishop JRB, Lord JM and Harrison P (2021), Traumatic injury is associated with reduced DNase activity and dysregulation of the actin scavenging system. Burns and Trauma.

Chimen M, Evryviadou A, Box CL, Harrison MJ, Hazeldine J, Dib LH, Kuravi SJ, Payne H, Price JMJ, Kavanagh D, Lax S, Kalia N, Brill A, Thomas SG, Belli A, Crombie N, Adams RA, Evans SA, Deckmyn H, Lord JM, Harrison P, Watson SP, Nash GB and Rainger GE (2020), Appropiation of GPIbα from platelet-derived extracellular vesicles supports monocyte recruitment in systemic inflammation. Haematologica. 105 (5):1248-1261.

Bravo-Merodio L*, Acharjee A*, Hazeldine J, Bentley C, Foster M, Gkoutos GV and Lord JM (2019), Machine learning for the detection of early immunological markers as predictors of multi organ dysfunction. Nature Scientific Data. 6 (1):328.

Sapey E, Patel JM, Greenwood H, Walton GM, Grudzinkas F, Parekh D, Mahida RY, Dancer RCA, Lugg ST, Howells P, Hazeldine J, Newby P, Scott A, Nightingale P, Hill AT, McAuley DF, Thicket DR (2019), Simvastatin improves neutrophil function and clinical outcomes in pneumonia: a pilot randomized controlled trial. Am. J. Respir. Crit. Care Med. 200 (10):1282-1293.

Hazeldine J, Dinsdale RJ, Harrison P and Lord JM (2019), Traumatic injury and exposure to mitochondrial-derived damage associated molecular patterns suppresses neutrophil extracellular trap formation. Frontiers in Immunology. 10:685.

Naumann DN, Hazeldine J, Bishop J, Midwinter MJ, Harrison P, Nash G and Hutchings SD (2019), Impact of plasma viscosity on microcirculatory flow after traumatic haemorrhagic shock: a prospective observational study. Clin. Hemorheol. Microcirc. 71 (1):71-82.

Dinsdale RJ, Hazeldine J, Al Tarrah K, Hampson P, Devi A, Ermogenous C, Bamford AL, Bishop J, Watts S, Kirkman E, Dalle Lucca JJ, Midwinter M, Woolley T, Foster M, Lord JM, Moiemen N and Harrison P (2019), Dysregulation of the actin scavenging system and inhibition of DNase activity following severe thermal injury. Br. J. Surg. 107 (4):391-401.

Naumann DN*, Hazeldine J*, Davies D, Bishop JRB, Midwinter MJ, Belli A, Harrison P and Lord JM (2018), Endotheliopathy of trauma is an on-scene phenomenon and is associated with multiple organ dysfunction syndrome: a prospective observational study. Shock. 49 (4):420-428.

Naumann DN, Hazeldine J, Midwinter MJ, Hutchings SD and Harrison P (2018), Poor microcirculatory flow dynamics are associated with endothelial damage and glycocalyx shedding following traumatic haemorrhagic shock. J. Trauma Acute Care Surg. 84 (1):81-88.

Naumann DN*, Hazeldine J*, Dinsdale RJ, Bishop JRB, Midwinter MJ, Harrison P, Hutchings SD and Lord JM (2017), Endotheliopathy is associated with higher levels of cell-free DNA following major trauma: A prospective observational study. PLoS One. 12 (12):E0189870.
Kuravi SJ, Yates C, Foster M, Harrison P, Hazeldine J, Hampson P, Watson C, Belli A, Midwinter M and Nash GB (2017), Changes in the pattern of plasma extracellular vesicles after severe trauma. PLoS One. 12 (8):e0183640.

Hazeldine J, Naumann DN, Toman E, Davies D, Bishop JRB, Su Z, Hampson P, Dinsdale RJ, Crombie N, Duggal NA, Harrison P, Belli A and Lord JM (2017), Pre-hospital immune responses and development of Multiple Organ Dysfunction Syndrome following traumatic injury: A Prospective Cohort Study. PLoS Medicine. 14 (7):e1002338.

Sapey E, Patel JM, Greenwood HL, Walton GM, Hazeldine J, Sadhra C, Parekh D, Dancer RCA, Nightingale P, Lord JM and Thickett DR (2017), Pulmonary infections in the elderly lead to prolonged impairment of neutrophil targeting, improved by simvastatin. Am. J. Respir. Crit. Care Med. 196 (10):1325-1336.

Hill LJ*, Di Pietro V*, Hazeldine J, Davies D, Toman E, Logan A and Belli A (2017), Cystatin D: An ultra-early inflammatory biomarker of traumatic brain injury. Scientific Reports. 7 (1):5002.

Dinsdale RJ, Devi A, Hampson P, Wearn CM, Bamford AL, Hazeldine J, Bishop JRB, Ahmed S, Watson C, Lord JM, Moiemen N and Harrison P (2017), Changes in novel haematological parameters following thermal injury. Scientific Reports. 7 (1):3211.

Di Pietro V, Ragusa M, Lazzarino G, Davies D, Su Z, Hazeldine J, Hill LJ, Crombie N, Purrello M, Logan A and Belli A (2017), MicroRNAs as novel biomarkers for the diagnosis and prognosis of mild and severe traumatic brain injury. J. Neurotrauma. 34 (11):1948-1956.

Bancos I*, Hazeldine J*, Chortis V, Hampson P, Taylor AE, Lord JM and Arlt W (2017), Primary adrenal insufficiency is associated with impaired natural killer cell function – a potential link to increased mortality. Eur. J. Endocrinol. 176 (4):471-480.

Hampson P*, Dinsdale RJ*, Wearn CM, Bamford A, Bishop JB, Hazeldine J, Moiemen NS, Harrison P and Lord JM (2016), Neutrophil dysfunction, immature granulocytes and cell-free DNA are early biomarkers of sepsis in burn-injured patients: A prospective observational cohort study. Annals of Surgery. 265 (6):1241-1249.

Hazeldine J*, Hampson P*, Adeusi Opoku F, Foster M and Lord JM (2015), N-formyl peptides drive mitochondrial damage associated molecular pattern induced neutrophil activation through ERK1/2 and P38 MAP Kinase signalling pathways. J.Injury. 46 (6):975-984.

Hazeldine J, Harris P, Chapple IL, Grant M, Greenwood H, Livesey A, Sapey E and Lord JM (2014), Impaired neutrophil extracellular trap (NET) formation: a novel defect in the innate immune system of aged individuals. Aging Cell. 13 (4):690-698.
Hazeldine J, Hampson P and Lord JM (2012), Reduced release and binding of perforin at the immunological synapse underlies the age-related decline in natural killer cell cytotoxicity. Aging Cell. 11 (5):751-759.

Wang K, Hampson P, Hazeldine J, Krystof V, Strnad M and Pechan PMJ (2012), Cyclin-dependent kinase 9 activity regulates neutrophil spontaneous apoptosis. PLoS One. 7 (1):e30128.

Review Articles

Hazeldine J and Lord JM (2021), Neutrophils and COVID-19: Active participants and rational therapeutic targets. Frontiers in Immunology. 12:680134.

Hazeldine J and Lord JM (2020), Immunesenescence: a predisposing risk factor for the development of COVID-19? Frontiers in Immunology. 11:573662.

Bentley C, Hazeldine J, Grieg C, Lord JM and Foster M (2019). Dehydroepiandrosterone: a potential therapeutic agent in the treatment and rehabilitation of the traumatically injured patient. Burns and Trauma. 7:26.

Hazeldine J, Hampson P and Lord JM (2016), The diagnostic and prognostic value of systems biology research on major traumatic and thermal injury: a review. Burns and Trauma. 4:33.

Hazeldine J, Lord JM and Belli A (2015), Traumatic brain injury and peripheral immune suppression: primer and prospectus. Frontiers in Neurology. 6:235.

Hazeldine J, Lord JM and Hampson P (2015), Immunesenescence and inflammaging: A contributory factor in the poor outcome of the geriatric trauma patient. Ageing Res. Rev. 24 (Pt B):349-357.

Hazeldine J*, Hampson P* and Lord JM (2014), The impact of trauma on neutrophil function. J. Injury. 45 (12):1824-1833.

Hazeldine J and Lord JM (2014), Innate Immunesenescence: Underlying mechanisms and clinical relevance. J. Biogerontology. 16 (2): 187-201.

Book Chapters

Hazeldine J and Lord JM. (2021). Immunesenescence and compromised removal of senescent cells: implications for health in old age. In: Bueno V., Pawelec G. (eds) Healthy Longevity and Immune System. Springer, Cham. DOI: https://doi.org/10.1007/978-3-030-87532-9. eBook ISBN: 978-3-030-87532-9.

Hazeldine J and Lord JM. (2018). The Impact of Age on Neutrophil Extracellular Trap formation. In: Fulop T., Franceschi C., Hirokawa K., Pawelec G. (eds) Handbook of Immunosenescence. Springer, Cham. DOI:10.1007/978-3-319-64597-1_102-1. Online ISBN: 978-3-319-64597-1.

Tariq MA*, Hazeldine J* and Lord JM. (2017). Innate Immunosenescence and Its Impact on Health in Old Age. In: Bueno V., Lord JM., Jackson T. (eds) The Ageing Immune System and Health. Springer, Cham. DOI:10.1007/978-3-319-43365-3_1. Online ISBN: 978-3-319-43365-3.

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