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The amyloid beta (Ab) protein is implicated in Alzheimer’s Disease through its ability to impair brain metabolism. We have recently found that Ab can also impair metabolism in other tissues. This project will determine the role of Ab in regulating whole body metabolism and determine whether it is implicated in the development of metabolic diseases such as type 2 diabetes.
Metabolic Wiring In Adipocytes - Unique Role In Maintaining Long-term Health
Funder
National Health and Medical Research Council
Funding Amount
$1,077,886.00
Summary
Fat cell metabolism is wired to optimize the cell’s ability to make and store lipid while programming the cell to fulfil its function in whole body metabolism. We will: 1) map fat cell metabolism under optimal and insulin resistant conditions; 2) explore the role of 3 nodes in his metabolic circuit predicted as control points; 3) use a novel genetically engineered mouse model to explore the functional significance of fat cell metabolism in whole body insulin sensitivity.
Can Vitamin D Prevent Diabetes By Improving Insulin Sensitivity And Secreation In Overweight Humans?
Funder
National Health and Medical Research Council
Funding Amount
$715,371.00
Summary
Vitamin D is mainly produced by the action of sunlight on skin. Low levels of vitamin D are becoming more common, as we work more indoors and avoid the sun and have been associated with type 2 diabetes. In proposed study, healthy overweight people, with low vitamin D, will be given vitamin D for 16 weeks to optimise blood levels of this vitamin. We will examine the changes in sugar metabolism. This study should provide important evidence on how vitamin D protects against diabetes and will suppor ....Vitamin D is mainly produced by the action of sunlight on skin. Low levels of vitamin D are becoming more common, as we work more indoors and avoid the sun and have been associated with type 2 diabetes. In proposed study, healthy overweight people, with low vitamin D, will be given vitamin D for 16 weeks to optimise blood levels of this vitamin. We will examine the changes in sugar metabolism. This study should provide important evidence on how vitamin D protects against diabetes and will support novel approaches to diabetes prevention.Read moreRead less
Dissecting The Role Of Selective Insulin Resistance In Type 2 Diabetes
Funder
National Health and Medical Research Council
Funding Amount
$980,624.00
Summary
Insulin resistance is a clinical condition where insulin, secreted from the pancreas in response to meals, is unable to fulfill its normal function. It is intimately linked to obesity and associated diseases - type 2 diabetes, cancer and cardiovascular disease. This proposal examines mechanisms contributing to insulin resistance and how insulin resistance leads to disease. We will identify drug targets with improved specificity and lead to novel insight into the risks of current treatments.
Does Exercise Increase Skeletal Muscle Insulin Sensitivity Via Nitric Oxide?
Funder
National Health and Medical Research Council
Funding Amount
$562,815.00
Summary
Almost one in four Australian adults have either diabetes or impaired glucose metabolism. A major benefit of exercise is that it increases the sensitivity of muscle to insulin for many hours after the exercise is completed. We don't fully understand the mechanisms that exercise increases muscle insulin sensitivity. If we discover how nitric oxide production during exercise is involved, drugs that mimic these exercise effects may be designed to benefit those with diabetes.
Sphingosine Kinase: A Target For Obesity-induced Insulin Resistance
Funder
National Health and Medical Research Council
Funding Amount
$626,845.00
Summary
Insulin resistance, a characteristic of type 2 diabetes, is linked to abnormal metabolism of lipid (fat) in tissues such as liver and muscle. This project aims to identify a novel pathway which may promote a build up of lipids in liver and therefore leads to the development of type 2 diabetes. This work may provide a basis for understanding and optimizing treatment of insulin resistance by regulating the control of fat metabolism in liver.
Lipid Metabolism In The Hypothalamus: Implications For Obesity And Diabetes Development
Funder
National Health and Medical Research Council
Funding Amount
$592,915.00
Summary
Obesity is defined by excessive fat storage and defective lipid metabolism, not only in adipose tissue, but also in most tissues throughout the body. Obesity-induced changes in lipid metabolism extends to the brain and is associated with impaired cognitive function. This work aims to determine how obesity affects neurons in the key feeding centres of the brain, and whether excessive lipid storage in neurons induces changes in body weight regulation and metabolism.
The Role Of Oxyterol-binding Protein-related Protein 5 (ORP5) In Cellular Lipid Storage And Whole Body Energy Homeostasis
Funder
National Health and Medical Research Council
Funding Amount
$758,472.00
Summary
Fat is stored in the form of lipid droplets in our cells and body. However, our knowledge on how lipid droplets grow and are broken down is very limited. We aim to investigate how lipids are delivered to the lipid droplets and how lipid droplets can store lipids efficiently. Results from the proposed work will provide fundamental new knowledge on how our cells store and utilize fat. Such knowledge may be translated into therapeutic strategies one day against obesity and diabetes.
Hepatic Oxidative Stress, PTPs & STAT Signalling In Obesity
Funder
National Health and Medical Research Council
Funding Amount
$1,086,547.00
Summary
Obesity is increasing at an alarming rate worldwide and is a leading cause of morbidity and mortality. Obesity is causally linked to the development of insulin resistance, a prelude to type 2 diabetes. In this proposal we will define a novel liver centric mechanism by which insulin resistance and oxidative stress may promote the development of morbid obesity, type 2 diabetes and liver disease.
Altered Protein Secretion Links The Fatty Liver To Metabolic Disease
Funder
National Health and Medical Research Council
Funding Amount
$415,797.00
Summary
The liver secretes proteins to alter metabolism in other tissues of the body. Fatty liver is a major feature of obesity and type 2 diabetes. This project aims to understand how fatty liver changes protein secretion and how this impacts on metabolic processes. The outcomes of this project will be the identification of protein biomarkers of fatty liver and the prediction of insulin resistance development in other tissues of the body.