Effect Of Oral Glutamine On GLP-1 And Insulin Secretion And Glycaemia In Humans.
Funder
National Health and Medical Research Council
Funding Amount
$397,444.00
Summary
Diabetes is an ever increasing problem with serious complications. We will investigate whether glutamine, one of the most common amino acids (protein building blocks) in the body, has a beneficial effect on blood glucose and insulin levels in the body in people who have type 2 (non-insulin dependent) diabetes. If so, glutamine supplementation may represent a novel, cheap and palatable way of improving outcomes and preventing the development of complications in people with type 2 diabetes.
Inhibition Of Glucose-stimulated Insulin Secretion By Protein Kinase C Epsilon
Funder
National Health and Medical Research Council
Funding Amount
$555,693.00
Summary
Type 2 diabetes is a chronic disease which occurs when the pancreas is unable to produce enough insulin for the body to cope with rising blood glucose levels after a meal, and is strongly linked to obesity. We have discovered that fat oversupply activates an enzyme in the pancreas causing defects in insulin release due to glucose. Inhibiting this enzyme helps overcome diabetes, through poorly defined mechanisms that we aim to clarify here. Our work could lead to new therapies for diabetes.
The Role Of Insulin Hypersecretion In Beta Cell Dysfunction In Type 2 Diabetes
Funder
National Health and Medical Research Council
Funding Amount
$318,622.00
Summary
The treatment of diabetes involves the use of drugs that stimulate the release of insulin from the pancreas to reduce the high blood sugar levels. However, we believe that while in the short term this is a good strategy, in the long-term it damages the cells that produce insulin leading to a worsening state of diabetes. It is the aim of this application to understand the mechanisms by which the insulin producing cells are damaged when forced to oversecrete insulin.
A Longitudinal Study Of Nerve Morphology In Diabetic Neuropathy Using Novel Non-invasive Ophthalmic Surrogate Markers
Funder
National Health and Medical Research Council
Funding Amount
$540,372.00
Summary
This research project will use two new ophthalmic instruments - the corneal confocal microscope and non-contact corneal aesthesiometer - to directly monitor changes in corneal nerves and corneal sensitivity, over a 5 year period, in diabetic patients suffering from a painful condition of the arms and legs known as diabetic neuropathy. This study will generate important new information that could allow diabetic doctors to more accurately monitor the progression of the disease.
The Role Of Vitamin D In Beta Cell Function, Glucose Tolerance And Diabetes Mellitus.
Funder
National Health and Medical Research Council
Funding Amount
$102,820.00
Summary
A significant proportion of Australians are deficient in Vitamin D, a vitamin obtained from sunlight exposure and to a lesser extent from food. Vitamin D deficiency has been associated with increased risk of Type 2 diabetes. This study aims to demonstrate the mechanisms through which vitamin D affects the insulin-producing cells of the pancreas and to determine whether deficiency affects the body's handling of glucose and subsequent risk of Type 2 diabetes and diabetes in pregnancy.
The Role Of Hypoxia Inducible Factor 1a In Beta-Cell Function And Diabetes
Funder
National Health and Medical Research Council
Funding Amount
$362,303.00
Summary
HIF1a is a gene which our preliminary data shows is needed for normal beta-cell function and insulin secretion. When beta-cells cannot release enough insulin, blood sugar levels rise, and diabetes develops. This research plan will look at the effects of deletion of HIF1a and of increasing HIF1a to see how this affects function of beta-cells and - or diabetes development. This work may show that HIF1a is a potential therapeutic target for the treatment of diabetes in humans.
I am a cellular physiologist investigating the role of ion channels, receptors and intracellular signalling systems in the control of hormone secretion from endocrine cells, contraction of cardiac myocytes and to a lesser extent, growth of endometrium can
The Role Of Endoplasmic Reticulum (ER) Stress In Pancreatic Beta-cell Dysfunction.
Funder
National Health and Medical Research Council
Funding Amount
$85,775.00
Summary
Diabetes results from pancreatic ß-cell failure which is characterised by insulin secretory defects and ß-cell destruction. This is mediated by inflammatory cytokines in type 1 diabetes and by high levels of fat in type 2 diabetes. The mechanisms by which ß-cells fail remain to be clarified but they are important considering the current epidemic of diabetes in Australia. This project will enhance our understanding of ß-cell failure and may provide therapeutic targets for diabetes treatment.
Mechanisms Of Insulin Resistance And Diabetes Susceptibility
Funder
National Health and Medical Research Council
Funding Amount
$633,783.00
Summary
The two main forms of diabetes - types 1 (T1D) and 2 (T2D) - pose a major problem. It is difficult to identify what causes diabetes. Recently, people at risk of T1D were found to have insulin resistance, a condition thought typical only of T2D. Excitingly, we discovered that the best T1D animal model also shows insulin resistance, and we used it to map important genes. We will now identify these genes. This will help us understand the disease process and to develop better treatments for it.