Phase Shifting Endocrine And Sleep/activity Rhythms With Light And Serotonergic Drugs
Funder
National Health and Medical Research Council
Funding Amount
$561,430.00
Summary
All biological systems, including those of humans, are influenced by changes in the environment, especially by variations in the amount of daylight. In animals the external rhythm of light and darkness interacts with a small part of the brain called the suprachiasmatic nucleus (SCN-often called the biological clock) which has its own self sustained rhythms. The SCN in turn orchestrates rhythms in the secretion of the hormone melatonin from the pineal gland, body temperature, the timing of sleep ....All biological systems, including those of humans, are influenced by changes in the environment, especially by variations in the amount of daylight. In animals the external rhythm of light and darkness interacts with a small part of the brain called the suprachiasmatic nucleus (SCN-often called the biological clock) which has its own self sustained rhythms. The SCN in turn orchestrates rhythms in the secretion of the hormone melatonin from the pineal gland, body temperature, the timing of sleep and the secretion of other hormones. The aim of this study is to extend our knowledge of the inter-relationships between light, the chemical messengers that nerves use to communicate with each other, the biological clock and rhythms in body functions. We will concentrate on one particular chemical messenger called serotonin which we believe plays an important role in keeping rhythms in synchrony with the natural day-night cycle. The results are expected to be of benefit in understanding how certain sleep timing disorders arise and provide some insight into how they might be treated.Read moreRead less
I am a perinatal physiologist who specializes in determining the factors that cause fetal and neonatal brain damage, and in devising treatments to prevent this for application in pregnant women and the neonate.
This project is about the way that the brain controls reproduction. It is important because there is no known cause for infertility in a significant number people with such a problem. The project should inform us on new ways to manage particular forms of reproductive failure.
Gonadotropin Inhibitory Hormone (GnIH); A Negative Regulator Of Reproduction
Funder
National Health and Medical Research Council
Funding Amount
$752,936.00
Summary
Gonadotropin inhibitory hormone (GnIH) is a short peptide of 8 amino acids that is produced by the brain and acts in a negative manner on brain and pituitary cells that control reproduction. This project aims to elucidate the role of GnIH in normal physiology and in states of stress and negative metabolic state. Work will be carried out in various species to define the function of the peptide and also to investigate ways that it can be utilised to prevent reproduction.
Investigating The Synergistic Role Of Brain-derived Neurotrophic Factor (BDNF) And Estradiol On Parvalbumin-mediated Cognitive Function: Relevance To Dementia
Funder
National Health and Medical Research Council
Funding Amount
$589,644.00
Summary
Estrogen-based therapy may improve cognitive functioning in dementia patients. However, more detailed knowledge is required to ensure safe and effective targeted treatment is provided. I propose to examine, in mouse models, the mechanistic functioning of estrogen signalling in key brain regions involved in cognition. Unravelling the way estrogen impart its beneficial effect can lead to the development of effective treatments for dementia and many other devastating neurological diseases.
Evaluation Of Functional Protein Molecules In Treating Obesity
Funder
National Health and Medical Research Council
Funding Amount
$349,407.00
Summary
This project aims to reduce excessive food consumption by controlling the satisfaction that people get from eating. This will be achieved through varying protein supplements (whey, leucine and beta-conglycinin) and their combinations. The idea is that people will feel satisfied despite eating less, leading to weight loss and the correction of related metabolic disorders.
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