Human RIPC-derived Regulatory Molecules For Cardioprotection Against Ischemic And Cardiopulmonary Bypass Injury
Funder
National Health and Medical Research Council
Funding Amount
$642,083.00
Summary
Our previous work indicates that evoked human blood borne factors confer protection against injury, due to loss of blood flow in heart muscle, when a brief stress is remotely applied to a limb (remote ischemic preconditioning). We have identified these proteins that appear to activate genetic and metabolic regulation of adaptive cell survival processes. We will now test their individual and combined capacity, efficiency and mechanisms of protection in the heart using cell and clinical models.
Towards Prevention Of Acute Kidney Injury After Cardiac Surgery
Funder
National Health and Medical Research Council
Funding Amount
$771,918.00
Summary
Open heart surgery saves thousands of lives each year in Australia, but often injures the kidney. Kidney oxygen deficiency is a major cause of kidney injury. We propose a new way to manage kidney oxygen levels during heart surgery, by measuring the level of oxygen in the urine in the bladder. We will determine whether low levels of oxygen in the urine during surgery predict later development of acute kidney injury, and whether patient management can be changed to optimize kidney oxygen levels.
Identifying A Plasma Borne Factor Of Remote Ischemic Preconditioning And Its Effect On The Plasma Proteome After Heart Surgery
Funder
National Health and Medical Research Council
Funding Amount
$82,094.00
Summary
During a heart operation, a patient needs a heart-lung bypass machine to supply blood to their body. We are interested in looking at a new therapy called Remote Ischaemic Preconditioning that may decrease the damaging effects of this heart-lung bypass machine. This therapy is applied using a blood pressure cuff before surgery and protects the organs. We want to see if this protects children who are having surgery for the first time and identify proteins in the blood that may be involved.
Identification Of A Plasma Factor Of Remote Ischemic Preconditioning And Its Effect On The Proteome After Heart Surgery
Funder
National Health and Medical Research Council
Funding Amount
$385,197.00
Summary
Heart surgery with the heart placed into arrest causes inflammation and tissue damage due to interrupted circulation. We know that prior brief interruption and restoration of blood supply called remote ischemic preconditioning (IPC) can protect heart and lungs against damage. Our previous studies indicate that IPC involves a circulating factor that protects the tissue by optimizing energy preservation. This knowledge can be applied to organ transplants, protection from stroke and heart attack.
This study is testing two drugs in people having heart surgery, to see whether either can reduce serious complications such as heart attack, stroke or death. Aspirin thins the blood and can reduce these risks but it increases bleeding during surgery. Another drug can reduce bleeding, but it may counteract the benefits of aspirin. The study is being done at more than 20 hospitals in Australia and around the world.