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A Type II Diabetes Adn Obesity Prevention Program For Primary School Aged Rural Indigenous Children
Funder
National Health and Medical Research Council
Funding Amount
$1,497,369.00
Summary
This project aims to develop and evaluate the impact of an innovative multi-component community and school-based program for type II diabetes and obesity prevention program for Indigenous and non-Indigenous rural children.
Investigation Of The Role Of Epimutation In Programming Of Obseity And Diabetes
Funder
National Health and Medical Research Council
Funding Amount
$333,669.00
Summary
Substantial evidence indicates that in utero environment influences the risk of developing some diseases later in life; this is known as fetal programming. We hypothesize that the in utero environment alters epigenetic marks in the fetus and changes gene expression, leading to disease later in life. We will investigate epigenetic changes in mice born to obese mothers. Better understanding of the mechanisms underlying fetal programming will result in improved administration of public health.
Cellular And Molecular Mechanisms Of The Profibrogenic Effect Of Leptin In The Liver.
Funder
National Health and Medical Research Council
Funding Amount
$166,500.00
Summary
Cirrhosis of the liver in the 7th leading cause of death. Regardless of the underlying cause of liver injury (virus, alcohol, or in affluent countries non-alcoholic steatohepatitis -NASH), the liver repairs damage by forming scar tissue in a pocess similar to wound healing. All chronic liver diseases are associated with repeated rounds of wound-healing leading inevitably to progressive fibrosis and cirrhosis of the liver. Obesity, in addition to being linked to type II diabetes and cardiovascula ....Cirrhosis of the liver in the 7th leading cause of death. Regardless of the underlying cause of liver injury (virus, alcohol, or in affluent countries non-alcoholic steatohepatitis -NASH), the liver repairs damage by forming scar tissue in a pocess similar to wound healing. All chronic liver diseases are associated with repeated rounds of wound-healing leading inevitably to progressive fibrosis and cirrhosis of the liver. Obesity, in addition to being linked to type II diabetes and cardiovascular diseases, is an independent risk factor for liver injury. It is the clinical setting for NASH, the most common liver disorder in western countries. Also the severity of hepatic fibrosis and the risk of progression to fibrosis in most forms of liver diseases (regardless of their cause) are dramatically increased in overweight (>60%) and obese (20% of adult Australian) patients. Leptin is an hormone that primarily controls food intake and energy balance in the body. In addition, leptin has many other functions. It is a modulator of the immune and inflammatory system, it is involved in skin wound healing and increases sclerosis in the kidney. We recently showed that leptin is necessary for fibrosis to develop in the liver and that increased levels of leptin increases the severity of liver fibrosis. It appears that leptin is a fundamental player in the biological processes of hepatic fibrosis. As increased serum levels of leptin is a feature of obesity, leptin is likely to be the missing link between obesity and increased hepatic fibrosis. By understanding the mechanisms by which leptin acts on liver cells to increase fibrosis, this work will lead to new strategies to prevent fibrosis in obese patients and to reverse scarring in the liver. With the endemic obesification in developed countries, prevention and treatment of obesity-associated liver disease will be the main challenge for the hepatologist in the next decades.Read moreRead less
Analysis Of The Role Of Vesicle Docking/Fusion Proteins In Trafficking Of The Glut4 Glucose Transporter In Adipocytes
Funder
National Health and Medical Research Council
Funding Amount
$212,036.00
Summary
The objective of these studies is to understand the molecular mechanisms that are involved in the control of blood glucose levels by the hormone insulin. Elevated blood glucose levels following a meal stimulate the pancreas to release insulin into the circulation. Insulin acts to reduce blood sugar levels by stimulating the uptake of glucose into fat and muscle and suppressing glucose production by the liver. Defects in insulin action in these tissues are the primary cause of Type II diabetes. T ....The objective of these studies is to understand the molecular mechanisms that are involved in the control of blood glucose levels by the hormone insulin. Elevated blood glucose levels following a meal stimulate the pancreas to release insulin into the circulation. Insulin acts to reduce blood sugar levels by stimulating the uptake of glucose into fat and muscle and suppressing glucose production by the liver. Defects in insulin action in these tissues are the primary cause of Type II diabetes. The debilitating effects of Type II diabetes, the dramatic increase its incidence, and the expense of treating the symptoms of diabetic complications have lead to the realization that the disease represents a major health problem requiring substantial research and development efforts. The project will focus on insulin regulation of glucose uptake in fat cells. Insulin promotes glucose uptake into fat by activating an intracellular signaling pathway that triggers the translocation of a unique glucose transporter protein (Glut4) from storage sites inside the cell to the cell surface. Glut4 translocation is mediated by small membrane vesicles that function to sequester the glucose transporter inside cells in the absence of insulin, and to shuttle Glut4 to the cell surface in response to the hormone. Despite the central importance of this event to the maintenance of normal blood glucose levels, it is poorly understood. The studies will be directed towards investigating the cellular machinery involved in the latter stages of insulin-stimulated glucose uptake- the vesicle-mediated delivery of Glut4 to the cell surface. The objective of these studies is to better understand the molecular basis for Glut4 translocation, and regulation by the insulin signaling cascade. Accomplishment of this goal may suggest potential drug intervention strategies aimed at enhancing insulin-stimulated Glut4 translocation and promoting improved control of blood glucose levels in Type II diabetes.Read moreRead less
Inhibitors Of Secretory Phospholipases In Diet Induced Obese Rats
Funder
National Health and Medical Research Council
Funding Amount
$581,051.00
Summary
A new drug given to rats fed a high fat-carbohydrate diet shows very promising effects in preventing and treating abdominal obesity, insulin resistance, glucose intolerance, and other risk factors for diabetes and cardiovascular disease. This project will profile biochemical and pharmacological properties of the drug in more detail in order to track down molecular mechanisms of its action and potential therapeutic benefits, guided by studies on rats, biochemical markers, rat and human fat cells.
This study combines sophisticated molecular techniques with state-of-the-art biochemical and physiological analyses to determine how gut hormones regulate satiety. By utilising unique conditional and germline KO mice , this research will make highly original and internationally competitive contributions to the understanding of the regulation of satiety and energy expenditure. Knowledge as to the causes of lack of satiety will be of great benefit in the search for novel treatments for obesity.