Discovering Deep Sleep Genes And Determining Their Roles For Preserving Cognitive Functions
Funder
National Health and Medical Research Council
Funding Amount
$484,901.00
Summary
Our mental well-being is largely tied to our sleep quality, and most cognitive disorders are also associated with poor sleep processes. Yet, we still do not know how sleep quality safeguards cognitive function. We will uncover genes that play a restorative role during deep sleep, and determine how genetic control of these deep sleep genes modulates selective attention in an animal model. Our results will suggest novel therapies for treating sleep disorders and associated diseases of the brain.
IRAP inhibitors are currently being developed as a new class of drugs for treating dementia and other forms of memory deficits. However, there are still gaps in our knowledge about how these drugs act to improve memory. The experiments outlined in this proposal will provide important insights into the drug action in different mouse models of memory deficit.
Psychosis contributes significantly to global disease burden, affecting more than 3% of the population when schizophrenia, schizoaffective disorder, and bipolar disorders are considered together. These conditions aggregate within families, and genetic risk factors do not conform to traditional diagnostic categories. My work employs brain-based classification techniques to derive subtypes of psychosis that dissect, and/or span the diagnostic categories, for investigation of modifiable genetic and ....Psychosis contributes significantly to global disease burden, affecting more than 3% of the population when schizophrenia, schizoaffective disorder, and bipolar disorders are considered together. These conditions aggregate within families, and genetic risk factors do not conform to traditional diagnostic categories. My work employs brain-based classification techniques to derive subtypes of psychosis that dissect, and/or span the diagnostic categories, for investigation of modifiable genetic and environmental risk factors for psychosis.Read moreRead less
Epigenetic mechanisms regulating sex differences in fear-related learning and memory. Anxiety disorders represent an enormous burden on society and are associated with premature aging and infertility in men and women. Evidence also indicates that parental anxiety affects child development. Given that fear-related learning has an important influence on emotional health which, in turn, affects lifestyle and the aging process, an understanding of the neural mechanisms mediating sex differences in ....Epigenetic mechanisms regulating sex differences in fear-related learning and memory. Anxiety disorders represent an enormous burden on society and are associated with premature aging and infertility in men and women. Evidence also indicates that parental anxiety affects child development. Given that fear-related learning has an important influence on emotional health which, in turn, affects lifestyle and the aging process, an understanding of the neural mechanisms mediating sex differences in fear learning will enhance our ability to develop better therapeutic approaches for treating anxiety and preventing relapse, potentially through a gender-specific approach. The studies outlined in this proposal will have implications for promoting and maintaining good health.Read moreRead less
Is Stroke Neurodegenerative? A Longitudinal Study Of Changes In Brain Volume And Cognition Following Stroke
Funder
National Health and Medical Research Council
Funding Amount
$1,044,837.00
Summary
There is no direct evidence linking Alzheimer’s Disease (AD) and stroke. It is unknown whether stroke can trigger progressive dementia in the same way as AD. In a group of stroke patients, we will measure MRI brain volume and cognition in the 5 years after stroke. These findings will be critical for identification of those patients most at risk of dementia after stroke. This will allow future early intervention for these patients, via promising AD disease-modifying therapies.
An inability to resist a temptation or repeated failures of self-regulation can lead to 'impulsive' and 'compulsive' behaviours that relate to a host of personal and social problems (eg., excessive eating, gambling, and substance use). Despite this, very little research has studied the neural and psychological underpinnings of these behaviours. My research will take advantage of recent innovations and approaches to fill this void and have implications for diagnosis and treatment.
Pathologies Of Action Control: Amygdala-striatal Interactions And The Development Of Habits.
Funder
National Health and Medical Research Council
Funding Amount
$431,867.00
Summary
Changes in basal ganglia function, whether produced by neurodegenerative disorders, stroke, injury or disease, can produce pathological changes in action control. This proposal will assess the role of amygdala afferents on basal ganglia structures, most notably the dorsal striatum, in this process. Using an animal model we will compare the role of central and basolateral amygdala inputs to striatum in decision-making, choice and the transition of actions to reflexive, habitual responses.
Characterisation of monoaminergic transmission in Central Amygdala. This project will identify the distribution and function of dopamine, serotonin and noradrenalin receptors on the various cell types and their inputs, in the medial, lateral and capsular divisions of Central Amygdala (CeA). We will test for tonic endogenous activation of monoaminergic receptors and synaptic release from electrically stimulated fibers terminating in CeA. Using paired recordings and calcium imaging, we will invest ....Characterisation of monoaminergic transmission in Central Amygdala. This project will identify the distribution and function of dopamine, serotonin and noradrenalin receptors on the various cell types and their inputs, in the medial, lateral and capsular divisions of Central Amygdala (CeA). We will test for tonic endogenous activation of monoaminergic receptors and synaptic release from electrically stimulated fibers terminating in CeA. Using paired recordings and calcium imaging, we will investigate intracellular mechanisms underlying monoamine receptor mediated effects. These findings when correlated with published behavioural studies will provide greater understanding of the role of the divisions of CeA and the inputs they receive, in the function of the amygdala.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0989703
Funder
Australian Research Council
Funding Amount
$500,000.00
Summary
Multiphoton microscope for cellular imaging in live animals. The proposed facility will for the first time allow scientists across Sydney to monitor cell function in intact brain and muscle tissues. The novel optical approach combines fluorescent markers with sophisticated microscopy. The presence of this facility will allow Australian scientists to design new approaches to fundamental biological questions concerning cellular function within the normal environment. In addition this facility wi ....Multiphoton microscope for cellular imaging in live animals. The proposed facility will for the first time allow scientists across Sydney to monitor cell function in intact brain and muscle tissues. The novel optical approach combines fluorescent markers with sophisticated microscopy. The presence of this facility will allow Australian scientists to design new approaches to fundamental biological questions concerning cellular function within the normal environment. In addition this facility will allow PhD and post-doctoral scientists to train and have access to a rapidly developing and cutting edge approach to biological problems.Read moreRead less
Processing of social communication calls in primate auditory cortex. This research will advance our understanding of the brain mechanisms involved in perception of sound. This will help to understand disorders of speech and hearing following brain damage and may assist in efforts to develop better hearing aids, as well as other speech recognition technologies. In addition, we will develop a primate for studying processing of sound in the brain that will be useful in future research to develop ....Processing of social communication calls in primate auditory cortex. This research will advance our understanding of the brain mechanisms involved in perception of sound. This will help to understand disorders of speech and hearing following brain damage and may assist in efforts to develop better hearing aids, as well as other speech recognition technologies. In addition, we will develop a primate for studying processing of sound in the brain that will be useful in future research to develop improved cochlear implants.Read moreRead less