
Ha Nguyen
Adelaide Medical School
Faculty of Health and Medical Sciences
Eligible to supervise Masters and PhD - email supervisor to discuss availability.
With a background of training in Medicine (MD, Hanoi Medical University) and Medical Science (PhD, University of Adelaide), I am a basic and translation cardiovascular/imaging researcher, mastering a wide range of clinical and basic science techniques, and undertaking an overseas research fellowship in Oxford and Norwich, UK, in 2016.
My current research relates to three areas:- (i) pathogenesis and treatment of aortic valve disease, (ii) diagnosis, natural history and pathogenesis of Takotsubo (“stress”) cardiomyopathy, and (iii) mechanistic interactions with inflammatory activation and glycocalyx shedding in cardiovascular disease.
Contributions to the field of Research:
As regards aortic valve disease, my research has focus on
(a) The roles of inflammatory activation and impaired nitric oxide signalling in valve degeneration in patients with Bicuspid Aortic Valve (BAV), a condition which is the most common congenital heart defect and affects approximately 1–2% adults (Figure 1).
(b) The potential for therapeutic retardation of valve disease progression, both in the context to BAV and in anatomically normal valve.


Within the area of Takotsubo cardiomyopathy (TTC) (Takotsubo means octopus trap in Japanese, see Figure 2), I have identified the utility of measuring inflammatory release of brain natriuretic peptide (BNP) and N-terminal proBNP as accessories to expedite diagnosis. I have also contributed to the concept that nitrosative stress may underlie the condition (patent arising: University of Adelaide, 2013) and have established that prolonged inflammation results in slow recovery in such patients.
I have recently investigated the potential involvement of glycocalyx shedding in a number of acute and chronic cardiovascular disorders, utilizing serial measurement of plasma concentrations of SD-1. In acute myocardial infarction, out lab has demonstrated that syndecan-1 (SD-1) levels, which is which is the most prevalent proteoglycan component of glycocalyx, are elevated relatively soon after the onset of symptoms, but rise sharply post reperfusion. SD-1 release also occurs in severe chronic congestive heart failure (CHF), in new onset atrial fibrillation (AF), and acute episode of TTC.
Quality of research output:
Main contributions from publications including 2 reviews and 1 editorial on TTC are related to
(i) BNP/NT-proBNP release
(ii) Its relationship to myocardial oedema
And (iii) Its relationship to slow echographic recovery (and impaired quality of life).
The studies on NO signaling in TTC led to my being awarded a plenary presentation on this subject at recent international ADMA meeting, one of 11 international presentations to date and one oral presentation at the European Society of Cardiology meeting.
The studies on glycocalyx shedding in TTC have recently presented at the American Heart Association Scientific meeting and published in International Journal of Cardiology in 2017.
As regards AS, a recently published case-control analysis of BAV revealed a potential role for myeloperoxidase in disease progression, as well as demonstrating the presence of endothelial dysfunction in BAV.
Research Projects:
Project 1: Improving outcomes after takotsubo (broken heart) syndrome
Takotsubo syndrome (TTS) affects many ageing patients, especially women, and is often mistaken for heart attacks. We are trying to improve diagnosis, emergency and long-term treatment of TTS, using both clinical and basic investigation strategies.
Available for Honours, Masters and PhD students
Location: QEH/BHI.
Start: Semester 1 2020
Special requirements: Vaccination required
Project 2. Coronary artery spasm
The research group has recently found that coronary artery spasm, a common cause of cardiac crises, is due to interactions between activated platelets and the vascular surface of the coronary blood vessels, with poor vascular and platelet responsiveness to nitric oxide. We have preliminary data on the underlying mechanisms whereby coronary spasm presents with episodic crises, and wish to validate these pilot data, simultaneously turning the information into the bases for new therapeutic options for these patients, and also possibly for other patients with angina.
Available for Honours, Masters and PhD students
Location: QEH/BHI.
Start: Semester 1 2020
Special requirements: Vaccination required
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Appointments
Date Position Institution name 2012 - ongoing Post doctoral Research Fellow University of Adelaide, Adelaide 2007 - 2008 Physician Friendship Hospital, Hanoi, Vietnam 1997 - 2004 Physician Friendship Hospital, Hanoi, Vietnam 1996 - 1997 Physician Friendship Hospital, Hanoi, Vietnam -
Awards and Achievements
Date Type Title Institution Name Country Amount 2013 Award Heart Foundation “Tom Simpson Trust Fund” - Australia - 2012 Scholarship Heart Foundation SA “E.O Myers Trust Fund”, Travelling Grant - Australia - 2012 Award Cardiac Society of Australia and New Zealand: European Society of Cardiology, Travelling Grant - - - 2010 Research Award The SA Heart Education and Research Foundation, PhD research prize - Australia - 2008 Scholarship The University of Adelaide Endeavour International Postgraduate Research Scholarship - Australia - -
Language Competencies
Language Competency Vietnamese Can peer review -
Education
Date Institution name Country Title 2008 - 2012 University of Adelaide, Adelaide Australia PhD 2004 - 2007 University of Adelaide, Adelaide Australia Master of Medical Science 1992 - 1996 Hanoi University, Hanoi Vietnam Bachelor of Foreign Language (English) 1990 - 1996 Hanoi Medical University, Hanoi Vietnam Doctor of Medicine -
Postgraduate Training
Date Title Institution Country 2012 Postdoctoral Research University of Adelaide, Adelaide Australia -
Research Interests
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Journals
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Conference Papers
Year Citation 2018 Imam, H., Nguyen, T. H., Tu, S., Tonnu, O., Chirkov, Y., & Horowitz, J. (2018). Pathogenesis of coronary artery spasm: a critical role for impaired platelet nitric oxide signaling. In EUROPEAN HEART JOURNAL Vol. 39 (pp. 336). Munich, GERMANY: OXFORD UNIV PRESS. 2017 Nguyen, T. H., Stansborough, J., Ong, G. J., Surikow, S., Frenneaux, M. P., & Horowitz, J. D. (2017). Implications of "Secondary" Takotsubo Syndrome on Short and Longterm Event Rates. In CIRCULATION Vol. 136 (pp. 2 pages). Anaheim, CA: LIPPINCOTT WILLIAMS & WILKINS. 2017 Imam, H., Nguyen, T. H., Tee, S. -L., Tonnu, O., Chirkov, Y. Y., & Horowitz, J. D. (2017). Impaired cGMP and cAMP signaling in patients with coronary vasospasm: changes during acute crises. In EUROPEAN HEART JOURNAL Vol. 38 (pp. 794). OXFORD UNIV PRESS. 2017 Nguyen, T. (2017). Impaired activity of platelet soluble guanylate cyclase and adenylate cyclase signaling in patients with coronary vasospasm: changes during acute crises.. In European Heart Journal. UK: Oxford University Press. 2010 Kucia, A., Neil, C., Nguyen, T., Beltrame, J., Arstall, M., & Horowitz, J. (2010). Evolution of ECG changes in Tako Tsubo Cardiomyopathy: Arrhythmias first, QT Prolongation later?. In Proceedings of the Cardiac Society of Australia and New Zealand and the International Society for Heart Research Australasian Section Annual Scientific meeting Vol. 19 (pp. 225). Elsevier BV.
DOI2007 Nguyen, T. H. (2007). Does induction of myocardial ischaemia by dipyridamole mimic physiological stress?. In Heart, Lung and Circulation. Christchurch: Blackwell Publishing Inc.. -
Conference Items
Year Citation 2019 Liu, S., Nguyen, T. H., Imam, H., Heresztyn, T., Stafford, I., Chirkov, Y. Y., & Horowitz, J. D. (2019). Coronary artery spasm: a consequence of impaired nitric oxide/hydrogen sulphide signalling?. Poster session presented at the meeting of EUROPEAN HEART JOURNAL. Paris, FRANCE: OXFORD UNIV PRESS. 2019 Nguyen, T. H., Liu, S., Imam, H., Heresztyn, T., Stafford, I., Chirkov, Y. Y., & Horowitz, J. D. (2019). Pathogenesis of symptomatic crises in patients with coronary artery spasm: evidence for acute damage to vascular glycocalyx and to circulating platelets. Poster session presented at the meeting of EUROPEAN HEART JOURNAL. Paris, FRANCE: OXFORD UNIV PRESS. 2019 Ong, G. J., Stansborough, J., Nguyen, T. H., & Horowitz, J. D. (2019). Iatrogenic takotsubo syndrome: incidence and impact. Poster session presented at the meeting of EUROPEAN HEART JOURNAL. Paris, FRANCE: OXFORD UNIV PRESS. 2017 Imam, H., Nguyen, T. H., Chirkov, Y., De Caterina, R., & Horowitz, J. (2017). Adenylate cyclase signaling is an important post-receptor determinant of response to all P2Y12 receptor antagonists. Poster session presented at the meeting of European Heart Journal. Barcelona: Oxford University Press.
DOI2017 Nguyen, T. H. (2017). Hypotension at admission and extent of release of NT-proBNP and catecholamines are associated with increased medium-term mortality rate in Takotsubo cardiomyopathy.. Poster session presented at the meeting of European Heart Journal. Bardelona: Oxford University Press. 2016 Assadi-Khansari, B., Chua, S. J., Chapman, M., Ali, O., Nguyen, H., Horowitz, J. D., . . . Ngo, D. T. M. (2016). Follistatin-like 3 predicts aortic root enlargement in patients with bicuspid aortic valve. Poster session presented at the meeting of EUROPEAN HEART JOURNAL. Rome, ITALY: OXFORD UNIV PRESS. 2016 Nguyen, T. H., Liu, S., Ong, G., Stafford, I., Frenneaux, M., & Horowitz, J. D. (2016). Glycocalyx shedding is markedly increased during the acute phase of Takotsubo cardiomyopathy. Poster session presented at the meeting of Abstracts of the American Heart Association Scientific Sessions and Resuscitation Science Symposium 2016, as published in Circulation. New Orleans, LA: American Heart Association. 2015 Nguyen, T. (2015). Nitric oxide plays a janus role in the pathogenesis of stress (Tako-tsubo) cardiomyopathy.. Poster session presented at the meeting of Circulation. Orlando: Lippincott Williams & Wilkins Ltd.. 2014 Nguyen, T. (2014). Heterogeneity of disease progression rates in patients with bicuspid aortic valve: is there a suitable bio-marker?. Poster session presented at the meeting of Circulation. Orlando: Lippincott Williams & Wilkins Ltd.. 2014 Nguyen, T. (2014). Systemic inflammatory activation and endothelial dysfunction predict development of aortic valve stenosis in bicuspid aortic valve. Poster session presented at the meeting of Global Heart. Melbourne: Elsevier Science & Technology. 2013 Nguyen, T. (2013). Can Recurrence of Takotsubo Cardiomyopathy be Predicted?. Poster session presented at the meeting of Heart, Lung and Circulation. the Gold Coast: Blackwell Publishing Inc.. 2013 Nguyen, T. (2013). Not such a rarity: takotsubo cardiomyopathy as a mimic of ST elevation myocardial infarction.. Poster session presented at the meeting of European Heart Journal. Amsterdam: Oxford University Press. 2013 Nguyen, T. (2013). ncreased myocardial expression of thioredoxin-interacting protein, and evidence of nitrosative stress in a rat model of Tako-Tsubo cardiomyopathy.. Poster session presented at the meeting of Circulation. Dallas: Lippincott Williams & Wilkins Ltd.. 2013 Nguyen, T. (2013). Interaction Between Left and Right Ventricular Dysfunction in Tako-Tsubo Cardiomyopathy: Impact on Haemodynamics and Morbidity. Poster session presented at the meeting of Heart, Lung and Circulation. the Gold Coast: Blackwell Publishing Inc.. 2013 Nguyen, T. H., Neil, C., Singh, K., Heresztyn, T., Chirkov, Y., & Horowitz, J. (2013). Determinants of prolonged impairment of global longitudinal strain post Takotsubo cardiomyopathy. Poster session presented at the meeting of Abstracts of the European Society of Cardiology Congress 2013 (ESC 2013), as published in European Heart Journal. Amsterdam, NETHERLANDS: Oxford University Press.
DOI2013 Horowitz, J., Nguyen, T., Neil, C., Singh, K., Chong, C., Licari, J., & Raman, B. (2013). Stress cardiomyopathy: new clinical and pathogenetic insights. Poster session presented at the meeting of Abstracts of the 10th International Congress on Coronary Artery Disease (ICCAD), as published in Cardiology. Florence, Italy: Karger.
DOI2012 Neil, C. J., Nguyen, T. H., Mahadavan, G., Chapman, M., Kucia, A. M., Stansborough, J., . . . Horowitz, J. D. (2012). LV functional recovery from Tako-Tsubo cardiomyopathy is incomplete after 3 months: evidence from 2D speckle-tracking echocardiography. Poster session presented at the meeting of EUROPEAN HEART JOURNAL. Munchen, GERMANY: OXFORD UNIV PRESS. 2012 Nguyen, T. H., Neil, A., Sverdlov, A., Ngo, D., Chan, W., Chirkov, Y., . . . Horowitz, J. (2012). Paradoxical preservation of NO signalling in Takotsubo cardiomyopathy. Poster session presented at the meeting of EUROPEAN HEART JOURNAL. Munchen, GERMANY: OXFORD UNIV PRESS. 2012 Nguyen, T. (2012). Paradoxical preservation of NO signalling in Takotsubo cardiomyopathy.. Poster session presented at the meeting of European Heart Journal. Munich: Oxford University Press. 2012 Nguyen, T. H. (2012). Takotsubo Cardiomyopathy is associated with “paradoxically” low ADMA concentrations. Poster session presented at the meeting of the ADMA meeting. London. 2012 Nguyen, T. (2012). LV functional recovery from Tako-Tsubo cardiomyopathy is incomplete after 3 months: evidence from 2D speckle-tracking echocardiography.. Poster session presented at the meeting of European Heart Journal. Munich: Oxford University Press. 2012 Nguyen, T. (2012). Residual LV Systolic Dysfunction Post-Tako-Tsubo Cardiomyopathy. Poster session presented at the meeting of Heart, Lung and Circulation. Brisbane: Blackwell Publishing Inc.. 2012 Nguyen, T. (2012). Cardiac denervation in chronic heart failure: relationship to changes in LV function and to arrhythmogenesis. Poster session presented at the meeting of Heart, Lung and Circulation. Brisbane: Blackwell Publishing Inc.. 2010 Kucia, A. M., Neil, C. J. A., Nguyen, T. H., Beltrame, J. F., Arstall, M. A., & Horowitz, J. D. (2010). Evolution of ECG changes in tako tsubo cardiomyopathy: arrhythmias first, QT prolongation later?. Poster session presented at the meeting of EUROPEAN HEART JOURNAL. Stockholm, SWEDEN: OXFORD UNIV PRESS.
AUSiMED Foundation, Grant (2016): Limitation of myocardial injury by recently synthesised inhibitors of necrosis (total value A$240,000)
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Past Higher Degree by Research Supervision (University of Adelaide)
Date Role Research Topic Program Degree Type Student Load Student Name 2016 - 2022 Co-Supervisor Takotsubo Syndrome: Precipitants, Clinical Course and Emerging Treatments Doctor of Philosophy Doctorate Part Time Mr Gao Jing Ong 2014 - 2019 Co-Supervisor Nitrosative Stress and the Pathogenesis of Takotsubo Syndrome: Insights from a Novel Female Rat Model Doctor of Philosophy Doctorate Full Time Mr Sven Yuri Surikow 2014 - 2016 Co-Supervisor Endothelial Dysfunction and Inflammatory Activation in Patients with Bicuspid Aortic Valves Master of Clinical Science Master Part Time Mr Matthew Chapman
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Committee Memberships
Date Role Committee Institution Country 2015 - ongoing Member Scientific Review Subcommittee of the Human Research Ethics Committee (TQEH/LMH/MH) - Australia -
Memberships
Date Role Membership Country 2012 - ongoing Member Cardiac Society of Australia and New Zealand Australia 2011 - ongoing Member European Society of Cardiology - 2010 - ongoing Member American Heart Association United States
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