Relaxin-3 Systems In Brain: Neurophysiology And Behaviour
Funder
National Health and Medical Research Council
Funding Amount
$287,321.00
Summary
The project aim is to better understand the function of a newly-discovered signalling molecule in the mammalian brain, know as relaxin-3. Recent research suggests that this chemical is vital for normal animal behaviour, such as arousal, stress, and learning and memory processes. This project will thoroughly characterise how this chemical modulates activity of brain regions that subserve behaviour in rats. This should reveal clinical implications of relaxin-3 in human behavioural disorders.
Neurodevelopmental Mechanisms And Early Intervention In Psychiatric Illness
Funder
National Health and Medical Research Council
Funding Amount
$652,765.00
Summary
Schizophrenia and depression are devastating mental illnesses and a huge burden to society. Drug treatments can be beneficial, but many patients are either treatment-resistant or show severe side-effects. There is an urgent need for truly novel treatment strategies which should ideally prevent symptoms. The main aim of this project is to elucidate brain mechanisms involved in schizophrenia and depression development to inform clinical research about improved preventative treatment strategies.
Central Control Of Stress-induced Changes In Immune Function.
Funder
National Health and Medical Research Council
Funding Amount
$411,724.00
Summary
LONG-TERM STRESS CAN ALTER OUR BRAIN'S ATTEMPTS TO FIGHT INFECTION Long-term stress is often blamed for causing illness but precisely how this occurs is now only beginning to be realised. It is especially disturbing that long-term stress can increase one's susceptibility to infections. Stress can alter the way our brain can help deal with assaults by bacteria and viruses. Normally, at the start of an infection, we release a hormone called cortisol from our adrenal glands. A low level of cortisol ....LONG-TERM STRESS CAN ALTER OUR BRAIN'S ATTEMPTS TO FIGHT INFECTION Long-term stress is often blamed for causing illness but precisely how this occurs is now only beginning to be realised. It is especially disturbing that long-term stress can increase one's susceptibility to infections. Stress can alter the way our brain can help deal with assaults by bacteria and viruses. Normally, at the start of an infection, we release a hormone called cortisol from our adrenal glands. A low level of cortisol in our body is beneficial because it can prevent the infection from taking hold in our body and spreading. However if we are chronically stressed our brains tell the adrenal glands to secrete excessive amounts of cortisol over long periods of time and this imbalance can actually hinder the ability of one's immune system to fight an infection. The unfortunate consequence is that the infection is more likely to win the battle and spread to cause further havoc. The present study will identify which areas of the brain are important in driving the secretion of cortisol during infection and how long-term stress can influence those areas. Because we might be exposed to long-term psychological stress that is repeated regularly or irregularly we will determine which pattern of stress has the greatest effect. An investigation into how the brain operates during long-term stress and infection will help us develop ways to prevent stress from disrupting our immune systems.Read moreRead less
How well people perform in everyday situations is often determined by memory function. When required to perform under stress memory performance is often affected. The effect of a psychological stress test on memory function in healthy volunteers and the ability of a dietary supplement, tyrosine, to prevent the effects will be studied. The data may suggest that depletion amino acids is responsible for the decrements in performance that are evident after an acute stressor.
I have discovered particular factors produced by our white blood cells have the ability to shut down or boost protein production in the gut, pancreas and lung. My vision is to harness these to devise new strategies for treatments for infectious and non-infectious diseases (inflammatory bowel disease, diabetes) that have a high burden on our healthcare system.
The High-Level Structure of Consciousness. The study of consciousness is often regarded as the last great frontier for science. Work in this area has flowered recently, but it has focused on low-level aspects of consciousness, such as visual perception of color and shape. We aim to discover the high-level structure of consciousness, which involves attention, self-consciousness, and the unity of consciousness, among other things. The project involves international collaboration in a three-way int ....The High-Level Structure of Consciousness. The study of consciousness is often regarded as the last great frontier for science. Work in this area has flowered recently, but it has focused on low-level aspects of consciousness, such as visual perception of color and shape. We aim to discover the high-level structure of consciousness, which involves attention, self-consciousness, and the unity of consciousness, among other things. The project involves international collaboration in a three-way interaction between philosophy, cognitive science, and phenomenology. This work has potential social benefits, for example in understanding attention in distracted drivers, and potential medical benefits, in understanding breakdowns of the unity of consciousness in patients with mental illnessRead moreRead less
Sex Differences In The Mechanisms By Which Stress Inhibits The Secretion And Actions Of GnRH
Funder
National Health and Medical Research Council
Funding Amount
$408,055.00
Summary
It is well known that stress can impair reproduction in humans and animals but it is not understood how this occurs. Consequently there are no therapies available to overcome the detrimental effects of stress on reproduction. Stress can take many forms, such as psychological stress, surgical trauma, strenuous exercise, undernutrition, all of which may inhibit reproduction. We now know that males and females respond differently to stress and we have shown that stress is also likely to have differ ....It is well known that stress can impair reproduction in humans and animals but it is not understood how this occurs. Consequently there are no therapies available to overcome the detrimental effects of stress on reproduction. Stress can take many forms, such as psychological stress, surgical trauma, strenuous exercise, undernutrition, all of which may inhibit reproduction. We now know that males and females respond differently to stress and we have shown that stress is also likely to have different effects on reproduction in males and females. In this project we aim to determine how stress impairs reproduction in males and females. A major effect of stress appears to be to inhibit the secretion of a substance produced by the brain that is necessary for the regulation of reproduction. This substance is called gonadotrophin releasing hormone (GnRH) and it acts on a small gland at the base of the brain to cause the release of hormones that are essential for reproduction in both males and females. It is also possible that stress may inhibit the actions of GnRH. Our research suggests that there may be differences between males and females in the extent to which stress inhibits the secretion of GnRH from the brain and its actions to cause the release of other reproductive hormones. In this project we will determine how stress acts in the brain to affect the secretion and actions of GnRH in males and females. Our research will make a major contribution to our knowledge of the way that stress inhibits reproduction in males and females. This information is essential in order to develop specific remedies to overcome reproductive disorders caused by stress and to improve reproductive health in both sexes.Read moreRead less
A model of the mind which explains the role of emotions in normal cognition and affective disorder. Depression is recognised as one of the most burdensome diseases in Australia. Though we of course make no claims, as philosophers, to cure depression our contribution is to engage philosophy productively with a vital national area of empirical research. The other area of national benefit is to consolidate Australia's developing reputation as a site for the involvement of philosophy in interdiscipl ....A model of the mind which explains the role of emotions in normal cognition and affective disorder. Depression is recognised as one of the most burdensome diseases in Australia. Though we of course make no claims, as philosophers, to cure depression our contribution is to engage philosophy productively with a vital national area of empirical research. The other area of national benefit is to consolidate Australia's developing reputation as a site for the involvement of philosophy in interdisciplinary projects which link the humanities to the sciences. Furthermore, with the project's anchoring in the humanities, there is hope that a focus on, and increased understanding of, depression will have flow-on effects in the Australian community that will help ease the stigmatisation that is still felt by many of its sufferers.Read moreRead less