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Remote Ischaemic Preconditioning And Its Effect On Coronary Physiology And Platelet And Leukocyte Activation.
Funder
National Health and Medical Research Council
Funding Amount
$124,608.00
Summary
Remote ischaemic preconditioning (RIPC) is a novel treatment which can improve patient outcomes after a heart attack, undergoing coronary stenting or bypass surgery. The mechanisms by which RIPC confers this cardio-protection is not clear. We will study the effects of RIPC on platelet activity and the flow of blood in the arteries that supply the heart. Understanding RIPC may open new avenues for treatment of patients with coronary artery disease, one of the major causes of death in Australia.
Bioengineering Of Cyclotides With Angiogenic Properties
Funder
National Health and Medical Research Council
Funding Amount
$488,273.00
Summary
Atherosclerosis, a gradual clogging of the arteries, is the single leading cause of death in Australia, Europe, the USA and Japan. Coronary heart disease (CHD; clogging of the coronary arteries), while secondary to atherosclerosis in most of the world, accounts for nearly 2 million deaths per year in Europe alone. In Australia CHD is the single leading cause of death. This project is aimed at developing lead molecules for the development of therapeutics capable of stimulating revascularization ( ....Atherosclerosis, a gradual clogging of the arteries, is the single leading cause of death in Australia, Europe, the USA and Japan. Coronary heart disease (CHD; clogging of the coronary arteries), while secondary to atherosclerosis in most of the world, accounts for nearly 2 million deaths per year in Europe alone. In Australia CHD is the single leading cause of death. This project is aimed at developing lead molecules for the development of therapeutics capable of stimulating revascularization (that is, opening up blocked vessels to improve blood flow) of tissues with slow or retarded circulation. Such therapeutics would improve the treatment of atherosclerosis and CHD. Peptides, small proteins, are generally not stable enough to be used as drugs. In this project we plan to engineer protein molecules based on an unusually stable family of proteins, known as the cyclotides. We will chemically synthesise analogues of cyclotides that have been altered to incorporate the activities of less stable small peptides that are able to induce therapeutic angiogenesis. Given the prevalence of CHD, the development of effective therapeutics could have a profound impact on the economic cost of the disease, which in the USA amounts to US$133.2 billion per year. This project involves collaboration between researchers from the Institute for Molecular Bioscience, who have expertise in drug design and protein chemistry, and researchers from the Centre for Research in Vascular Biology, who have expertise in vascular biology and vessel engineering. Both of these institutes are part of the University of Queensland.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