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In Vivo Studies On Ventriculo-vascular Coupling And The Role Of Aortic Pressure Wave Morphology On Coronary Blood Flow
Funder
National Health and Medical Research Council
Funding Amount
$137,700.00
Summary
Heart disease is a leading cause of death and disability in Australia. Conditions resulting in reduced blood flow to the heart are particularly common and dangerous. Despite significant progress, we still do not understand exactly how changes in heart function and the aorta (the major artery arising from the heart) affect blood flow to the heart. This study will utilise sophisticated new techniques to look at the interactions between heart function, pressure in the aorta and coronary blood flow
Physiology Of Acute Coronary Syndromes: Focus On Microvascular Dysfunction
Funder
National Health and Medical Research Council
Funding Amount
$90,029.00
Summary
Heart attacks,caused by blocked coronary arteries are an important public health concern.There are patients who have a worse outcome due to damage of small blood vessels that cannot be visualised with normal testing. New blood tests and invasive technology are available that can assess these small vessels.We plan to use these techniques to observe the extent of small blood vessel damage in patients with heart attacks and hope this will lead to better understanding of heart attacks and improved t ....Heart attacks,caused by blocked coronary arteries are an important public health concern.There are patients who have a worse outcome due to damage of small blood vessels that cannot be visualised with normal testing. New blood tests and invasive technology are available that can assess these small vessels.We plan to use these techniques to observe the extent of small blood vessel damage in patients with heart attacks and hope this will lead to better understanding of heart attacks and improved treatments.Read moreRead less
Role Of Microvascular Flowmotion In Skeletal Muscle Glucose Metabolism
Funder
National Health and Medical Research Council
Funding Amount
$596,971.00
Summary
Obesity and type 2 diabetes are nationally and globally reaching epidemic rates. This project investigates the regulation of blood flow within muscle and its impact on metabolism. Outcomes from the study may lead to diagnostic tools and treatments for cardiovascular disease associated with obesity, hypertension and type 2 diabetes.
Assessment Of Remote Ischemic Conditioning On Post-cardiac Arrest Myocardial Dysfunction By Magnetic Resonance Imaging, Invasive Coronary Hemodynamic Measurements And Markers Of Inflammation
Funder
National Health and Medical Research Council
Funding Amount
$265,881.00
Summary
Cardiac arrest and heart attack continue to cause unacceptably high mortality and morbidity. Even following successful resuscitation many people do not recover due to the inflammation caused by a lack of blood flow. We will investigate remote ischemic conditioning, utilizing a combination of world class imaging with heart MRI, flow monitors directly in heart arteries and markers of inflammation, We aim to determine the impact and recovery to the heart, brain and circulation of this new therapy.
Actions Of The Polyphenol Epigallocatechin 3-gallate On Insulin Sensitivity
Funder
National Health and Medical Research Council
Funding Amount
$409,746.00
Summary
This project will determine whether the bioactive compound in green tea (called EGCG) can reduce insulin resistance by enhancing the ability of insulin to open very small blood vessels (called capillaries) in muscle. Opening more capillaries will help glucose to be stored in muscle, thus alleviating insulin resistance. Findings from these studies may have important impact on the management of insulin resistance and type 2 diabetes.
Contribution Of The Central Nervous System To Peripheral Neural Control In Obesity And Diabetes.
Funder
National Health and Medical Research Council
Funding Amount
$454,691.00
Summary
Obesity and diabetes are becoming major worldwide public health problems. A characteristic of human obese diabetes is a marked increase in sympathetic nerve activity to the kidneys and to the muscle. The cause of this overactivity is unknown, but undoubtedly involves the central nervous system. Within the brain are a select group of regions that are able to directly influence the activation of the sympathetic nervous system. We suspect these areas to play a critical role in the overactivity of t ....Obesity and diabetes are becoming major worldwide public health problems. A characteristic of human obese diabetes is a marked increase in sympathetic nerve activity to the kidneys and to the muscle. The cause of this overactivity is unknown, but undoubtedly involves the central nervous system. Within the brain are a select group of regions that are able to directly influence the activation of the sympathetic nervous system. We suspect these areas to play a critical role in the overactivity of the sympathetic nerve activity in obese diabetics. Indeed, we believe that there are specific chemical messengers in these select brain areas that are normally finely balanced. In obesity - diabetes, this balance is disturbed. Finally, we hypothesise that exercise, which is known to have beneficial effects for obesity - diabetes, restores the balance of the neurochemicals and this contributes to the positive outcomes of exercise.Read moreRead less
Validation Of Point Of CarE CT DeRived FracTionAl Flow Reserve In Stable Coronary Artery Disease (VERITAS)
Funder
National Health and Medical Research Council
Funding Amount
$78,554.00
Summary
In stable coronary artery disease outcomes are dependent on the presence and burden of ischaemia. Current methods of assessing ischaemia are either invasive with associated risks or non-invasive but limited in their diagnostic accuracy. Our research plans to assess the real world feasibility of a novel, non-invasive, point of care CT-Derived Fractional Flow Reserve technique and its potential for guiding clinical decision making and influencing downstream testing.
Non-Inasive Wave Intensity Analysis In Paediatric Congenital Heart Disease: A Novel Application Of Cardiac Magnetic Resonance Imaging
Funder
National Health and Medical Research Council
Funding Amount
$136,861.00
Summary
Alterations in heart pumping function, or blood vessel structure, can limit the supply of blood and oxygen to the body. Wave Intensity Analysis (WIA) is a new way of characterising these interactions with great precision. Up until now, WIA has been performed in adult and animal studies using mainly invasive techniques. This project will develop a non-invasive method for WIA using cardiac Magnetic Resonance Imaging, to gain new insights into congenital heart disease in children.
Microvascular Function And Outcome In Patients With Acute Coronary Syndromes
Funder
National Health and Medical Research Council
Funding Amount
$79,514.00
Summary
Damage to the small vessels of the heart is a hallmark of heart attacks. Furthermore, small vessel dysfunction (MVD) is associated with a worse prognosis even in the presence of an unblocked major coronary artery following a heart attack. Using novel invasive assessments, we aim to analyse the prevalence and clinical predictors of MVD, assess the impact of MVD on short and long-term outcome after heart attack and address the impact of new treatments on MVD and heart muscle recovery.
Novel Therapeutic Interventions To Increase Blood Flow To Skeletal Muscle
Funder
National Health and Medical Research Council
Funding Amount
$360,750.00
Summary
Over the past decade it has become clear that the cytokine interleukin (IL)-6 is produced in and released from tissues such as fat and muscle to mediate metabolic processes. In this respect, it acts in a hormone like manner. During this period it has also become apparent that the hormone insulin increases blood flow to skeletal muscle. There is emerging evidence that IL-6 plays a role, not only in metabolic and signalling processes within skeletal muscle, but also in blood flow. This project wil ....Over the past decade it has become clear that the cytokine interleukin (IL)-6 is produced in and released from tissues such as fat and muscle to mediate metabolic processes. In this respect, it acts in a hormone like manner. During this period it has also become apparent that the hormone insulin increases blood flow to skeletal muscle. There is emerging evidence that IL-6 plays a role, not only in metabolic and signalling processes within skeletal muscle, but also in blood flow. This project will determine whether the cytokine IL-6 is a viable therapeutic target in the treatment of blood flow disorders in patients with type 2 diabetes. This has major ramifications since type 2 diabetes has reached pandemic levels in Australia and is estimated to cost the community approximately 800 million dollars per year.Read moreRead less