Prevention Of Beta Cell Destruction In Type 1 Diabetes By Immunotherapy Using Parasite-derived Molecules.
Funder
National Health and Medical Research Council
Funding Amount
$518,443.00
Summary
To prevent type 1 diabetes, compounds that avert the autoimmune destruction of beta cells are needed. We are exploiting the potential of ñworm therapyî by mimicking the beneficial immune effects of parasite worm infection. We have identified the molecules that the parasite uses to influence host immune responses. We have demonstrated that these novel immune-modulatory worm molecules prevent diabetes in a mouse model. This offers great potential for the development of therapeutic interventions.
Discovery Early Career Researcher Award - Grant ID: DE120100992
Funder
Australian Research Council
Funding Amount
$375,000.00
Summary
The role of neuropeptides driving plasticity in the control of blood pressure and breathing. This project aims to understand how pathways in the brain, that control blood pressure, develop 'memory' after repeated episodes of low oxygen, as occurs in sleep apnoea. Based on the assumption that long-lasting excitatory actions are responsible for this change in nerve behaviour this project will increase knowledge about how the brain controls blood pressure.
Rhombomeric Topography of Structures in the Adult Mouse: Evidence from Avian Homologies and Transgenic Mice. The brainstem of birds has been shown to be formed by a line of segments, like carriages of a train. The same arrangement exists in the embryos of mammals, but is hidden in the adult mammalian brain. We will transfer our detailed knowledge of bird brains to make a maps of the brainstem segments in adult mice. We will then test this map with special gene markers which will reveal the occul ....Rhombomeric Topography of Structures in the Adult Mouse: Evidence from Avian Homologies and Transgenic Mice. The brainstem of birds has been shown to be formed by a line of segments, like carriages of a train. The same arrangement exists in the embryos of mammals, but is hidden in the adult mammalian brain. We will transfer our detailed knowledge of bird brains to make a maps of the brainstem segments in adult mice. We will then test this map with special gene markers which will reveal the occult segmental pattern in adult mice. This work will give us a new way of understanding the organisation of brainstem centres that control breathing, cardiovascular functions and emotional states.Read moreRead less
Local Sleep In The Awake Brain: An Underlying Cause Of Neurobehavioural Deficits In Sleep Apnea?
Funder
National Health and Medical Research Council
Funding Amount
$582,330.00
Summary
Obstructive sleep apnea (OSA) is a common sleep disorder which significantly impacts daytime functioning leading to excessive sleepiness, and problems with attention and thinking. Currently, the causes for cognitive impairment in OSA (including attentional lapses and performance deficits) are poorly understood. In the awake state, groups of neurons can briefly go “offline” as they do in sleep. These periods of “local sleep” may explain impaired task performance in OSA.
Inhibition Of Fear Memories By Extinction: Neural Substrates.
Funder
National Health and Medical Research Council
Funding Amount
$234,250.00
Summary
Anxiety disorders [e.g., Post Traumatic Stress Disorder (PTSD)] are the most prevalent type of psychopathology in the industrialised world. They are associated with characteristic behavioural (e.g., heightened startle) and autonomic (e.g., cardiovascular) reactions. These disorders are often characterised as an inability to regulate the emotion of fear. Significant progress has been made in understanding the neural and cellular processes involved in the establishment of fear memories, but relati ....Anxiety disorders [e.g., Post Traumatic Stress Disorder (PTSD)] are the most prevalent type of psychopathology in the industrialised world. They are associated with characteristic behavioural (e.g., heightened startle) and autonomic (e.g., cardiovascular) reactions. These disorders are often characterised as an inability to regulate the emotion of fear. Significant progress has been made in understanding the neural and cellular processes involved in the establishment of fear memories, but relatively little is known about the mechanisms by which fear memories can be inhibited or suppressed. Understanding this latter process is a key to the development of effective treatments for anxiety disorders such as PTSD where the patient suffers from persistent, intrusive, unwanted trauma memories. A common experimental procedure for reducing learned fear is to repeatedly expose the subject to a fear-eliciting stimulus but without any aversive outcome. This procedure leads to a progressive loss, or extinction, of the fear reactions elicited by the stimulus. Historically, the extinction of fear was thought to be due to an erasure of the fear memory. However, recent evidence shows that extinction inhibits, rather than erases, the fear memory. Because the fear memories remain intact, some structure(s) in the brain must inhibit activity in the fear pathway. This project uses extinction of conditioned fear reactions in rat subjects to determine the structure(s) in the brain that inhibit fear memories and their behavioural and cardiovascular expression. It brings together the expertise of four well-established researchers and uses a combination of behavioural, physiological, immunohistochemical, tract tracing, and lesion approaches to achieve this aim. The proposed experiments will reveal the structure(s) in the brain that control the inhibition of fear, as well as the site(s) of this inhibition in the fear pathwayRead moreRead less
Transdermal Testosterone Therapy: A Potential Treatment For Selective Serotonin Reuptake Inhibitor (SSRI)-associated Sexual Dysfunction In Women
Funder
National Health and Medical Research Council
Funding Amount
$241,351.00
Summary
Female sexual dysfunction (FSD) is frequently reported with selective serotonin reuptake inhibitor (SSRI) therapy and venlafaxine, these being the most common antidepressants used by Australian women. We have shown that testosterone therapy significantly improves sexual function in women with FSD. However SSRI-users have been excluded from these past studies. The aim of this study is to assess the efficacy of transdermal testosterone therapy for treatment of sexual dysfunction associated with SS ....Female sexual dysfunction (FSD) is frequently reported with selective serotonin reuptake inhibitor (SSRI) therapy and venlafaxine, these being the most common antidepressants used by Australian women. We have shown that testosterone therapy significantly improves sexual function in women with FSD. However SSRI-users have been excluded from these past studies. The aim of this study is to assess the efficacy of transdermal testosterone therapy for treatment of sexual dysfunction associated with SSRI therapy.Read moreRead less
Blood pressure control by neural activation: underlying mechanisms of electric field stimulation and photostimulation of genetically targeted neurones. This project aims to understand how nerve stimulation can be used to treat drug-resistant high blood pressure. The project will lead to new benchmarks for interfacing novel technology with the nervous system and to development and enhancement of commercial devices similar to a cardiac pacemaker for patients with limited treatment options and poor ....Blood pressure control by neural activation: underlying mechanisms of electric field stimulation and photostimulation of genetically targeted neurones. This project aims to understand how nerve stimulation can be used to treat drug-resistant high blood pressure. The project will lead to new benchmarks for interfacing novel technology with the nervous system and to development and enhancement of commercial devices similar to a cardiac pacemaker for patients with limited treatment options and poor prognosis.Read moreRead less
Nodal Function In Peripheral Neuroinflammatory Disorders: Target Antigens, Functional Significance And Treatment Response
Funder
National Health and Medical Research Council
Funding Amount
$605,172.00
Summary
Inflammatory neuropathies are autoimmune disorders which produce severe disability and represent a costly burden to the healthcare system, but the causes remain unknown. Recent evidence from our team suggests that antibodies against parts of the peripheral nerve at the node of Ranvier are involved. The project aims to identify these specific targets and monitor treatment responsiveness, stabilise nerve function and prevent persistent disability.
Development of an electrode for stimulation of a transplanted neosphincter. This project aims to develop a novel electrode as an integral component of a new treatment for severe stress urinary incontinence. Treatments for severe stress urinary incontinence are associated with complications and are not completely effective. The new electrode is designed to be activated by an implanted stimulator to control an innervated smooth muscle graft (the neosphincter) to regulate the flow of urine from the ....Development of an electrode for stimulation of a transplanted neosphincter. This project aims to develop a novel electrode as an integral component of a new treatment for severe stress urinary incontinence. Treatments for severe stress urinary incontinence are associated with complications and are not completely effective. The new electrode is designed to be activated by an implanted stimulator to control an innervated smooth muscle graft (the neosphincter) to regulate the flow of urine from the bladder. Project research into the design of the electrode will focus on providing safe, effective and efficient stimulation of the neosphincter, while ensuring minimal damage to the surrounding tissues and affording straightforward implantation at surgery.Read moreRead less
Development of an electrode assembly for the stimulation of a transplanted innervated smooth muscle sphincter. This project will design and assess a number of different electrode designs for use in a medical device being developed for the treatment of severe stress urinary incontinence. The project will identify an optimal electrode design, which will be used in future clinical trials of the device.