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Outcomes Of The Arterial Switch Operation: A Multi-centre Study
Funder
National Health and Medical Research Council
Funding Amount
$86,733.00
Summary
The arterial switch operation is the surgery of choice for children born with transposition of the great arteries, a congenital heart defect where the main two vessels of the heart arise from wrong pumping chambers of the heart. There are very few studies looking at adults after this operation. We aim to study all patients who have had an arterial switch. The results of this study will further increase our knowledge of the long term consequences of having the arterial switch operation.
We aim to grow body tissues for surgery, including heart muscle, liver and pancreatic islets (for diabetes) and will investigate using stem cells to repair the brain after stroke. We will attempt to boost the expansion of blood vessels in growing tissues using molecular tools we have found crucial for cell signaling. In growing heart tissues and in stroke we will improve drugs that might boost the potential of stem cells to regenerate damaged tissues
Surgical Management Of The Pulmonary Circulation In Children
Funder
National Health and Medical Research Council
Funding Amount
$114,328.00
Summary
Congenital disorders of the lung circulation are rare. These children often present during infancy with symptoms of heart failure and require surgery to correct these defects. Without surgery, the prognosis of these conditions are poor. Our understanding of these conditions are limited. The proposed study aims to review all patients who underwent surgical repair of abnormalities of lung arteries and veins at the Royal Children’s Hospital.
Enkephalin Metabolism In Cardiac Ischemia, Heart Failure And Cardiac Surgery
Funder
National Health and Medical Research Council
Funding Amount
$327,037.00
Summary
It has recently been discovered in animal studies that heart muscle can make its own opioid proteins. Previously, it was thought that only nerves made and released opioids. We have recently found that a class of opioids called enkephalins are made and then depleted from the heart during the stress of oxygen and nutrient deprivation. Enkephalins have been found to have potent metabolic effects on the heart. Previous work has shown that opioids can protect the heart against injury incurred during ....It has recently been discovered in animal studies that heart muscle can make its own opioid proteins. Previously, it was thought that only nerves made and released opioids. We have recently found that a class of opioids called enkephalins are made and then depleted from the heart during the stress of oxygen and nutrient deprivation. Enkephalins have been found to have potent metabolic effects on the heart. Previous work has shown that opioids can protect the heart against injury incurred during disease that restricts energy and oxygen supply to the blood vessels and heart. We wish to demonstrate this for the first time in human heart, and we will explore whether the production of enkephalins is altered by the stresses of cardiac surgery and heart failure. Understanding how the human heart attempts to protect itself in disease and how enkephalins work under these conditions, may prove valuable in the development of new drug therapy with synthetic drugs which mimic the action of enkephalins for heart protection during cardiac surgery, heart transplantation and ischemic heart disease. We will test whether specific enkephalins may be used to improve donor heart viability for transplantation by improving the duration and quality of preservation during storage. Understanding what happens to enkephalin production and metabolism in the failing hearts of patients may allow us to find new therapeutic targets in heart failure.Read moreRead less
Improving The Long-term Outcomes Of The Australian And New Zealand Fontan Population
Funder
National Health and Medical Research Council
Funding Amount
$89,836.00
Summary
The Fontan procedure is the last of a series of operations offered to children born with hearts with a single pumping chamber. Without this procedure these children would die, however, with this procedure their long-term expectations are still uncertain. This study will investigate the long-term outcomes of the Australian and New Zealand Fontan population and how these outcomes can be improved.
IV Iron For Treatment Of Anaemia Before Cardiac Surgery (ITACS Trial)
Funder
National Health and Medical Research Council
Funding Amount
$2,285,290.00
Summary
Our aim is to evaluate intravenous iron to treat anaemia in 1000 patients waiting for their cardiac surgery. This could reduce the risks of the operation and enable patients to recover faster and can go home earlier.
Cardiopulmonary Bypass And The Acute Release Of Activin A In Inflammation
Funder
National Health and Medical Research Council
Funding Amount
$52,914.00
Summary
This is the first study to investigate the pattern of activin A release in cardiac surgery. Activin A was originally isolated as a reproductive hormone but in the last 10 years, a significant body of work has established its role in a variety of inflammatory and cardiovascular conditions. It has been shown to be an important early player in the inflammatory response to infection. We aim to define its role in inflammation associated with the use of heart-lung machine in cardiac surgery.