Ghrelin Receptor Signaling In The Brain Links Hunger To Mood And Motivation
Funder
National Health and Medical Research Council
Funding Amount
$721,909.00
Summary
Cells in the brain that respond to hunger may also promote obsessive compulsive behaviours often associated with mental illness, such as anorexia nervosa. This grant examines how the signals from the body inform the brain of hunger. Specially we examine if overactivity of hunger cells, in the absence of appropriate food intake can increase behaviours associated with mental illness.
Post-stroke Hyperglycaemia – Treatment With Exenatide In Acute Ischaemic Stroke (TEXAIS) Trial
Funder
National Health and Medical Research Council
Funding Amount
$1,266,149.00
Summary
Raised blood glucose levels (hyperglycaemia) after a stroke is common. It reduces the efficacy of stroke treatments and results in worse outcomes. Insulin is not useful as a treatment for this as it causes frequent hypoglycaemia and does not improve clinical outcomes. Exenatide is a common diabetes drug that is simple to use and lowers blood glucose without hypoglycaemia. It will be tested in the Treatment with Exenatide in Acute Ischaemic Stroke (TEXAIS) trial.
DIET-INDUCED OBESITY ALTERS THE CENTRAL ACTIONS OF GHRELIN
Funder
National Health and Medical Research Council
Funding Amount
$38,599.00
Summary
Ghrelin is a hormone that primarily targets the brain to increase food intake and body weight. It has evolved to prevent starvation during periods of negative energy balance by promoting energy intake and storage. We have identified central ghrelin resistance in diet-induced obesity (DIO) as a novel disturbed neuroendocrine system that restricts excessive food intake. Therefore, a novel approach to treat DIO is to exploit or enhance these intrinsic mechanisms that restrict the development of obe ....Ghrelin is a hormone that primarily targets the brain to increase food intake and body weight. It has evolved to prevent starvation during periods of negative energy balance by promoting energy intake and storage. We have identified central ghrelin resistance in diet-induced obesity (DIO) as a novel disturbed neuroendocrine system that restricts excessive food intake. Therefore, a novel approach to treat DIO is to exploit or enhance these intrinsic mechanisms that restrict the development of obesity.Read moreRead less
Brain Metal Neurochemistry: Mechanism-driven Drug Discovery For Neurodegeneration
Funder
National Health and Medical Research Council
Funding Amount
$851,980.00
Summary
Alzheimer’s disease (AD) is a complex disease where certain proteins congeal in the brain and metals accumulate. This project investigates the function of the proteins in microscopically transporting the metals. It will also look for tests that predict the onset of AD by measuring iron and iron related proteins by using special brain imaging (MRI), and measurements in spinal fluid. Finally, it will test drug candidates that target the metals, in animal models of AD, and in early clinical trials.
Characterisation Of Eating Behaviour And Metabolic Phenotypes Across Neurodegenerative Diseases: Insights For Survival And Progression
Funder
National Health and Medical Research Council
Funding Amount
$340,891.00
Summary
It has been suggested that metabolic changes and eating behavior could modify the progression of neurodegeneration. This research aims using brain imaging, pathological examination and novel techniques from obesity research to examine if there are characteristic metabolic changes in patients with frontotemporal dementia, Amyotrophic lateral sclerosis and Alzheimer’s disease; how these changes relate to eating behavior, and how they may affect disease progression and survival.
Central Neural Mechanisms Underlying The Effect Of Endocannabinoids On Body Weight
Funder
National Health and Medical Research Council
Funding Amount
$377,793.00
Summary
Obesity and its associated pathologies of cardiovascular and respiratory disease, stroke, predisposition to some cancers and infertility in women no longer needs to be justified as a major health issue in modern societies. In fact it is quickly becoming recognised as the major threat to world health. Recently, the anecdotal evidence for increased food intake, particularly the craving of high carbohydrate, high sugar foods, associated with the use of marijuana has been put into a therapeutic cont ....Obesity and its associated pathologies of cardiovascular and respiratory disease, stroke, predisposition to some cancers and infertility in women no longer needs to be justified as a major health issue in modern societies. In fact it is quickly becoming recognised as the major threat to world health. Recently, the anecdotal evidence for increased food intake, particularly the craving of high carbohydrate, high sugar foods, associated with the use of marijuana has been put into a therapeutic context. Specifically a cannabinoid receptor antagonist, rimonabant (currently undergoing trials as Accomplia) has become a central player in the race for an obesity therapy because of its effects in blocking the brain receptors that would normally respond to cannabinoid like compounds in the brain that tend to increase food intake. Despite the trials that are underway in Europe and the USA many of the central actions of the naturally occurring cannabinoids in the brain, the so-called endocannabinoids are very poorly understood. This series of experiments utilizing the best technologies available will address basic questions relating to the brain pathways involved and even the extent to which weight loss associated with the administration of these drugs to rats and presumably humans is dependent on the reduction of food intake or the burning of energy in a process called thermogenesis. These are essential pieces of information if this type of compound is to be considered as a serious contender in the search for an obesity therapyRead moreRead less
Mechanism Of Action Of A Quinazolinone In Models Of PD
Funder
National Health and Medical Research Council
Funding Amount
$667,548.00
Summary
By the time symptoms of Parkinson's disease (PD) appear, 60-70% of the cells in a crucial part of the brain called the substantia nigra have been destroyed and within a few years of diagnosis, most of the remaining cells have died. This project investigates the causes of this cell loss and a how a new class of compounds could interrupts the process. Success in achieving the aims of this proposal will add to our knowledge of the causes of neuronal death in PD
Huntington’s disease (HD) is a devastating neurodegenerative disorder which shares several features with Alzheimer’s and Parkinson’s disease (i.e. dementia-like cognitive deficits). There is currently no cure for HD. Using a mouse model of HD and a combination of relevant drugs (i.e. N-Acetylcysteine and deferiprone) targeting two distinct levels of the cascade of events leading to HD, we will slow down the progression of the disease and correct dysfunctions within the brain.
CNS Peptides Involved In The Control Of Thermogenesis And Body Weight
Funder
National Health and Medical Research Council
Funding Amount
$405,750.00
Summary
There is currently an obesity epidemic in all industrialised countries which has an associated impact on cardiovascular disease and associated pathologies such as type 2 diabetes. Current therapeutic strategies have focussed on reducing food intake but, as evidenced by the continuation of this epidemic, these have had limited success. An alternative approach, which is the subject of this project, is to determine and modify the central mediators controlling energy expenditure. We will bring a raf ....There is currently an obesity epidemic in all industrialised countries which has an associated impact on cardiovascular disease and associated pathologies such as type 2 diabetes. Current therapeutic strategies have focussed on reducing food intake but, as evidenced by the continuation of this epidemic, these have had limited success. An alternative approach, which is the subject of this project, is to determine and modify the central mediators controlling energy expenditure. We will bring a raft of new technologies to examine this question and potentially identify new avenues for therapeutic intervention in obesity.Read moreRead less