The Role Of Tissue Hypoxia In The Evolution Of Kidney Disease
Funder
National Health and Medical Research Council
Funding Amount
$509,391.00
Summary
We will determine how low oxygen levels in the kidney lead to kidney disease. We can now measure the levels of oxygen in kidney tissue in rats 24 hours a day, 7 days a week, in a completely non-invasive way. We will study two common kinds of kidney disease. One, acute kidney injury, can result from administration of contrast agents used in x-ray diagnostic procedures. The other, chronic kidney disease, is common in patients with diabetes or high blood pressure.
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.
Combined Therapy To Ameliorate Ventilatory Instability In Patients With Heart Failure And Sleep Apnea
Funder
National Health and Medical Research Council
Funding Amount
$386,648.00
Summary
Sleep apnea is highly prevalent, particularly in patients with heart failure, and treatment remains limited to applying pressure via a face mask which can be intolerable. Although instability in breathing control is a major cause of apnea in many patients, treatments targeting instability with sufficient efficacy are unavailable. This project will combine two treatments, acetazolamide and oxygen, to powerfully reduce instability and provide relief from sleep apnea in a subgroup of patients.
A lack of oxygen in the kidney (hypoxia) is a primary cause of kidney disease, but the mechanisms are not clear. To determine the processes involved, we will take a new approach; combining a mathematical model with studies of kidney oxygen regulation in both normal and diseased kidneys. We will determine the causes of hypoxia in kidney disease, and find out if preventing hypoxia has the potential to be a treatment for kidney disease.