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Excitatory Synaptic Circuitry And Plasticity In The Amygdala.
Funder
National Health and Medical Research Council
Funding Amount
$405,750.00
Summary
The amygdala is a key structure in the neuronal circuitry that underlies the analysis of emotional information. In particular this structure plays a major role in the processing of fear-related information. Disorders of the processing and storage of such information are thought to be the major underlying cause of mental disorders such as panic attacks, anxiety and post traumatic stress disorder. Understanding the physiology of this structure and the ways in which this can change in response to v ....The amygdala is a key structure in the neuronal circuitry that underlies the analysis of emotional information. In particular this structure plays a major role in the processing of fear-related information. Disorders of the processing and storage of such information are thought to be the major underlying cause of mental disorders such as panic attacks, anxiety and post traumatic stress disorder. Understanding the physiology of this structure and the ways in which this can change in response to various stimuli is necessary for the development of rational therapies that target the amygdala.Read moreRead less
Understanding The Pathophysiology Of Schizophrenia, Major Depressive Disorder And Bipolar Disorder As A Basis For Improving Treatments
Funder
National Health and Medical Research Council
Funding Amount
$804,106.00
Summary
The Applicant seeks to understand the causes of the schizophrenia, bipolar disorder and major depressive disorder, which affect over 20% of the Australian population. This research is important as drug design, based on chemical remodelling, has not significantly advanced initial breakthroughs in treating psychiatric disorders and there is now a widespread belief that new drugs will only come from understand their causes.
Understanding The Role Of Muscarinic Receptors In The Pathophysiology Of Depression And Bipolar Disorder
Funder
National Health and Medical Research Council
Funding Amount
$480,074.00
Summary
The causes of bipolar disorder and major depressive disorder, which effect many Australians, remain unknown. We have recently shown decreases in muscarinic receptors in the brain of people with bipolar disorder and major depressive disorder. Muscarinic receptors are important in maintaining the functions of the brain that seem to be affected in people with bipolar disorder and major depressive disorder. Here we seek to understand how changes in muscarinic receptors occur in both disorders.
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.
Differential Changes In Cortical Tumour Necrosis Factor Signalling In Mood Disorders And Schizophrenia
Funder
National Health and Medical Research Council
Funding Amount
$642,078.00
Summary
Changes in inflammation-related pathways contribute to the symptoms of psychiatric disorders and tumour necrosis factor ? (TNF) is a protein central to regulating theses pathways. We have now shown that changes in pathways regulated by TNF are present in the brains of people with schizophrenia and mood disorders. This means that the symptoms experienced by those with the different disorders may be linked to differential changes in TNF-regulated pathways in the brain.
Transgenerational Impacts Of Paternal Stress On Offspring Mental Health: Epigenetic Mechanisms And Therapeutic Interventions
Funder
National Health and Medical Research Council
Funding Amount
$572,941.00
Summary
We are following up the extraordinary, almost ‘Lamarckian’, discovery that environmental influences on fathers can affect their offspring via ‘epigenetic’ changes to the sperm. We will explore mechanisms whereby increased levels of paternal stress can cause behavioural changes in the offspring, which are relevant to depression and anxiety disorders, and how positive environmental factors, including physical activity, may induce beneficial effects. This will have major public health implications.
A Novel Knockin Model To Test The Role Of Nicotine Acting On Alpha4 Acetylcholine Receptors In Complex Behaviours
Funder
National Health and Medical Research Council
Funding Amount
$581,315.00
Summary
Cigarette smoking is the single largest preventable cause of death and disease in Australia and worldwide. Nicotine contained in tobacco products acts on brain nicotine receptors, which plays an intrinsic role in addiction. One type of receptor for nicotine found in regions of the brain associated with drug-seeking behaviour is called alpha4 nicotinic receptors. We have made a mouse with a mutation in this nicotine receptor to study nicotine addiction and anxiety.
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.
Neural Correlates Of Fear Conditioning And Extinction
Funder
National Health and Medical Research Council
Funding Amount
$901,899.00
Summary
The amygdala is a part of the brain that processes emotional information. Disorders of amygdala function lead to a host of anxiety-related disorders such as phobias and post-traumatic stress disorder. In this grant we will study how the amygdala processes sensory information from the environment and forms memories of salient events. These findings will tell us how memories are formed, stored and retrieved. In the long term it will provide targets for the development of new anxiolytic agents
Is The Eye A Window To The Brain In Sanfilippo Syndrome?
Funder
National Health and Medical Research Council
Funding Amount
$852,967.00
Summary
Study of the retina and optic nerve permits evaluation of central nervous system – these structures contain both neurons and glia and are outgrowths of the developing brain. Therefore, eye examination may allow us to study the brain and monitor brain disease and the effect of therapy. This project will determine whether brain disease in a childhood-onset disorder (Sanfilippo syndrome) and treatment of it, can be monitored in this way.