Provision Of Secondary Cardiac Preventive Australian General Practice
Funder
National Health and Medical Research Council
Funding Amount
$499,513.00
Summary
This study will provide a comprehensive description of secondary preventative activities for patients with ischaemic heart disease, with the aim of determining those factors that can most contribute to reducing the increased risk of further events which they experience, and thereby reducing the burden of this disease.
Regulation Of Heart Development And Regeneration By DNA Methylation.
Funder
National Health and Medical Research Council
Funding Amount
$552,709.00
Summary
The adult mammalian heart has an extremely limited capacity for regeneration following a heart attack, which is in stark contrast to the robust regenerative capacity of the newborn heart. How and why mammals lose their ability to regenerate heart tissue after birth is not well understood. We propose a new approach to unravel the complex mechanisms that control gene expression during heart development in rodents and humans, which could provide new therapeutic avenues for heart regeneration.
Development Of Oral Natruiretic Peptides For Congestive Heart Failure
Funder
National Health and Medical Research Council
Funding Amount
$511,037.00
Summary
Congestive heart failure is fatal disease and a major disease burden for the community affecting nearly half a million Australians. Current therapies are inadequate. We seek to develop a new peptide therapy based on snake venom version of the human B type natriuretic peptide which has to be given by injection. We will produce an orally active, stable and effective treatment using a program of discovery involving testing in animals and cells.
Mechanisms Controlling Sympathetic Nerve Activity To The Heart
Funder
National Health and Medical Research Council
Funding Amount
$101,220.00
Summary
In heart failure there is a large increase in sympathetic nerve activity to the heart and the kidney that has detrimental effects which is related to mortality in patients. The areas in the brain causing the increased nerve activity to the heart are unknown. We will investigate the role of two key brain areas in mediating this increase. In addition we will also focus on local mechanisms that are responsible for the increase in noradrenaline spillover.
Evaluating Coronary Stents Using High-resolution Optical Coherence Tomography Imaging In Patients With Coronary Artery Disease
Funder
National Health and Medical Research Council
Funding Amount
$217,274.00
Summary
A stent is a device made of metal that is placed inside an artery to prop it. Recently, the applicant introduced into Australia a novel technology to examine these stents once inside the body. This information may help make stents safer for patients
Redefining The Role Of Macrophages In Atherosclerosis: Macrophage Subset Role In Plaque Stability
Funder
National Health and Medical Research Council
Funding Amount
$509,190.00
Summary
Vascular disease is a major cause of death and disability through events such as heart attack and stroke. A blood cell, called a macrophage, plays a major detrimental role. However, we have identified the presence of an alternate form of this cell in vascular disease that we propose may play an opposing, beneficial role. We will thus re-define the role of the macrophage in vascular disease and predict that we will be able to demonstrate an alternate healing role. This will provide a new therapeu ....Vascular disease is a major cause of death and disability through events such as heart attack and stroke. A blood cell, called a macrophage, plays a major detrimental role. However, we have identified the presence of an alternate form of this cell in vascular disease that we propose may play an opposing, beneficial role. We will thus re-define the role of the macrophage in vascular disease and predict that we will be able to demonstrate an alternate healing role. This will provide a new therapeutic approach for treatment of atherosclerosis.Read moreRead less
Differences Between Physiological And Pathological Cardiac Hypertrophy Offer New Strategies For Treating Heart Failure
Funder
National Health and Medical Research Council
Funding Amount
$335,473.00
Summary
The heart becomes large both in athletes as well as in patients with heart disease and failure. In the first instance, the large (hypertrophied) heart has normal or even increased pumping ability (function) whereas in the patient with heart disease the function is depressed and the heart may fail. My studies are directed towards finding out what is the difference in these 2 situations and what mechanisms are responsible for making one big heart pump well and the other big heart pump poorly. Spec ....The heart becomes large both in athletes as well as in patients with heart disease and failure. In the first instance, the large (hypertrophied) heart has normal or even increased pumping ability (function) whereas in the patient with heart disease the function is depressed and the heart may fail. My studies are directed towards finding out what is the difference in these 2 situations and what mechanisms are responsible for making one big heart pump well and the other big heart pump poorly. Specifically my project hopes to identify the genes and proteins responsible for the differences. I have already identified one such gene and I now plan to manipulate this gene by overexpressing it in animals (transgenic mice) with heart failure. I predict that overexpression of this gene will improve heart function in models of heart failure. If the hypothesis is correct, activating genes that are activated in the athlete's heart maybe a potential tool for improving heart function, quality of life and life span in patients with heart failure.Read moreRead less
Transcriptional Regulatory Complexes Associated With Cardiac Hypertrophy
Funder
National Health and Medical Research Council
Funding Amount
$474,517.00
Summary
Following the success in decoding human genome, i.e. DNA sequence, a major task is to understand how the activity of genes with consequent changes in respective proteins. As proteins are an important component for cell structure and function, such changes in quantity and quality of proteins will play a pivotal role to affect disease development and progression. It has been well known that a group of genes are altered (up or down) in the heart under conditions such as heart muscle overgrowth (ie ....Following the success in decoding human genome, i.e. DNA sequence, a major task is to understand how the activity of genes with consequent changes in respective proteins. As proteins are an important component for cell structure and function, such changes in quantity and quality of proteins will play a pivotal role to affect disease development and progression. It has been well known that a group of genes are altered (up or down) in the heart under conditions such as heart muscle overgrowth (ie hypertrophy), aging or of abnormal beating function. The reasons for such altered gene activity remain poorly understood. Although recent studies from research on genetics or cancer have revealed the important role of the DNA and DNA-bound proteins (called histone) in the control of gene activity, this has rarely been studied in the heart. In this project, we will test our hypothesis that DNA-histone structure is a key factor that control gene activities in ageing and diseased heart. This proposal is supported by our recent findings showing that in the hypertrophied heart, such DNA-histone structure did alter in such a way that fits well with alterations in gene activity. We have planned a series of studies to test this hypothesis in a systematic fashion. A number of sophisticated and cutting-edge techniques and experimental models of heart hypertrophy will be used. We will analyse changes in activities of a number of selected genes in the heart and also analyse changes in DNA-histone structures and chemical modifications at particular regions. These changes will then be linked together. We will also explore the possibility of modulating DNA-histone structure, thereby controlling the degree of cardiac hypertrophy. This project is the joint efforts of scientists with substantial experience in research on gene activity and heart diseases, and is highly likely to generate novel information to and hold significant therapeutic potential.Read moreRead less
Guaranteeing Survival Into Adulthood, Physical Health And Psychological Well-being To Children Born With Single Ventricles.
Funder
National Health and Medical Research Council
Funding Amount
$342,773.00
Summary
Being born with a single pumping heart chamber is the most severe heart condition but thanks to several operations we can see them survive. A growing population of young functional adults now face an uncertain future and we have no options for them. A/Pr Y d’Udekem is a leading paediatric cardiac surgeon. His research aims to provide the medications, reinterventions and artificial hearts that are necessary to give them a longer and fulfilling life.