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Characterisation Of Novel AGE Binding Proteins: Implications For Diabetic Vascular Complications.
Funder
National Health and Medical Research Council
Funding Amount
$210,990.00
Summary
This project will explore a process known as advanced glycation and in particular how this may lead to organ injury in diabetes. Diabetes is characterised by sustained elevation of blood glucose levels which interact with proteins to generate products known as advanced glycation end-products (AGEs). These AGEs bind to other proteins some of which have been isolated and are considered receptors. Our own group has identified a new family of proteins known as ERM proteins which bind to AGEs. This i ....This project will explore a process known as advanced glycation and in particular how this may lead to organ injury in diabetes. Diabetes is characterised by sustained elevation of blood glucose levels which interact with proteins to generate products known as advanced glycation end-products (AGEs). These AGEs bind to other proteins some of which have been isolated and are considered receptors. Our own group has identified a new family of proteins known as ERM proteins which bind to AGEs. This is a highly novel finding which now needs to be examined in more detail. The ERM proteins which include ezrin, radixin and moiesin are found at many sites of diabetic complications including the kidney, retina and blood vessel wall. They have a number of functions including effects on cell adhesion and cell structure. This is important in diabetes where changes in cells including altered structure have been observed. This grant will characterise the interactions between AGEs and ERM proteins at the molecular and cellular level. It will define how AGEs influence cells via interactions with ERM proteins. These studies have the potential to lead to treatments that may modulate the AGE-ERM interactions, thereby retarding or preventing diabetic vascular complications. These complications are of important clinical significance since they are the major cause of morbidity and mortality in the diabetic population. Furthermore, diabetes is a major cause of premature atherosclerosis in our community, diabetic kidney disease is the leading cause of end-stage renal failure in the Western world and diabetic retinopathy (eye disease) is the main cause of blindness in the working age population.Read moreRead less
I am a physiologist and my diabetes research involves a preclinical approach to address the issue of diabetes and its major renal and cardiovascular complications
Prof Cooper’s diabetes research encompasses basic mechanisms through to translational research and major clinical trials in order to address the issue of diabetes and in particular the prevention and management of its major renal and cardiovascular complications.
Aldosterone Inhibition And Diabetic Retinopathy: Treatments And Mechanisms Of Action
Funder
National Health and Medical Research Council
Funding Amount
$511,294.00
Summary
The World Health Organization predicts that by 2030, more than 360 million people will have diabetes. Despite almost all patients developing retinopathy, current treatments do not prevent disease progression. One strategy being evaluated is blockade of a hormone called angiotensin II. We have new evidence that a related system called aldosterone exists in retina and contributes to damage. This project will determine if aldosterone blockade is a potential treatment for diabetic retinopathy.
Development Of New Anti-fibrotic Drugs For Prevention Of Diabetic Nephropathy.
Funder
National Health and Medical Research Council
Funding Amount
$133,800.00
Summary
Diabetic kidney disease is the leading cause of kidney failure in the developed world. Currently there is no treatment that reduces the excessive scarring that leads to kidney failure. This project aims to test whether a series of novel compounds that have been specifically designed to reduce scarring can prevent diabetic kidney disease.
Prediction Of Microvascular Complications In Type 1 Diabetes Using Novel Retinal Vascular Imaging Techniques
Funder
National Health and Medical Research Council
Funding Amount
$396,818.00
Summary
Children with type 1 diabetes face the risk of developing severe complications later in life involving their eyes (retinopathy), kidneys (nephropathy) and nerves (neuropathy). This study aims to determine if subtle, early changes seen in the retinal blood vessels, as measured from new computer imaging techniques, predict the subsequent development of these diabetes complications in children-adolescents with type 1 diabetes.
Interactions Between Advanced Glycation And Oxidative Stress In Diabetic Renal And Cardiac Complications
Funder
National Health and Medical Research Council
Funding Amount
$431,700.00
Summary
Kidney and heart disease are serious complications of diabetes. These complications are the major cause of disability and premature death in the western world. Studies from our group and others have shown that diabetic complications appear to be a consequence of a number of different processes. These pathways include a sugar dependent pathway of irreversible interactions between proteins such as collagen and sugar known as advanced glycation. The process of advanced glycation alters the body's a ....Kidney and heart disease are serious complications of diabetes. These complications are the major cause of disability and premature death in the western world. Studies from our group and others have shown that diabetic complications appear to be a consequence of a number of different processes. These pathways include a sugar dependent pathway of irreversible interactions between proteins such as collagen and sugar known as advanced glycation. The process of advanced glycation alters the body's ability to renew these protein, hence causing accelration of the ageing process. In fact, it is estimated that this process occurs almost fifty times faster in diabetes. These sticky complexes accumulate in tissues causing disruption ot the normal tissue structure. Our group has a drug which can act as scissors and cut the sticky sugar off the proteins allowing it to be turned over. Unfortunately this does not fix all of the damage. These AGE molecules are involved in a number of other harmful processes including the production of toxic oxygen derived molecules which are harmful byproducts of diabetes. While these oxygen 'radicals' have been implicated in heart attack and stroke their source has remained a mystery in diabetes. Previously, the only way to remove these molecules was to mop them up with antioxidants such as Vitamin E. Antioxidants work slowly and so some damage is already done before they 'detoxify' these oxygen radicals. We propose to use combinations of medicines to see if we can achieve more effective protection against these processes in experimental diabetes. This may provide new therapies for threatment of kidney and heart disease in diabetes.Read moreRead less
The Fremantle Diabetes Study Phase II: A Community-based Study Of Diabetes Care, Control, Complications And Cost
Funder
National Health and Medical Research Council
Funding Amount
$1,307,780.00
Summary
In Phase I of the Fremantle Diabetes Study (FDS), valuable and detailed data on a wide range of subjects were obtained from a community-based patient cohort between 1993 and 2001. There is a large body of evidence that the nature and treatment of diabetes in Australia is changing rapidly. In order to provide up to date information to health care providers and government agencies, to confirm observations made in FDS I and to venture into new research areas, Phase II will be conducted.
Novel Approaches To Risk Stratification In Patients With Type 2 Diabetes
Funder
National Health and Medical Research Council
Funding Amount
$508,838.00
Summary
75% of the mortality in adults with Type 2 diabetes is due to a cardiac event. Early detection and treatment of cardiac disease is paramount in improving health outcomes. An echocardiogram is an accurate and non-invasive identification of cardiac dysfunction. We will assess the prognostic value of echocardiography and novel plasma markers in patients with diabetes. Our results may lead to new management and screening guidelines for heart disease in diabetes.