Metabolism And Neurotoxicity Of Hemin And Hemin-derived Iron
Funder
National Health and Medical Research Council
Funding Amount
$346,400.00
Summary
Stroke is a leading cause of death and disability in industrialised countries. Much of the brain damage that follows a hemorrhagic stroke is attributable to the presence of free iron which mediates oxidative stress in brain cells. This iron originates from hemin, which in turn is derived from the hemoglobin in extravasated blood cells. The fact that iron is freed from hemin in the post-stroke period makes it an attractive therapeutic target. However, remarkably little is known about the metaboli ....Stroke is a leading cause of death and disability in industrialised countries. Much of the brain damage that follows a hemorrhagic stroke is attributable to the presence of free iron which mediates oxidative stress in brain cells. This iron originates from hemin, which in turn is derived from the hemoglobin in extravasated blood cells. The fact that iron is freed from hemin in the post-stroke period makes it an attractive therapeutic target. However, remarkably little is known about the metabolism of hemin by the different types of brain cells. The present project investigates the metabolism and neurotoxicity of hemin in brain cells and will examine the capacity of potential therapeutic agents to protect brain cells from hemin toxicity. The data obtained from this project will advance our understanding of the uptake and metabolism of hemin by the four main types of brain cell, and the factors that are likely to be involved in the neurotoxicity of hemin-derived iron following hemorrhagic stroke. The study will also provide data concerning the relative effectiveness of potential therapeutic agents, and information concerning the cell types, time points and aspects of hemin metabolism that are most effectively targeted by these agents. Such advances will guide the development of therapeutic approaches that are directed at minimising the brain damage which results from hemin-derived iron in humans.Read moreRead less
Stroke outcomes directly relate to brain tissue rescue. We have contributed to changes in clinical practice through many clinical trials of new protocols and therapeutic strategies. Our program will focus on brain salvage in the pre-hospital setting and the acute hospital environment. We will use novel approaches to enhance brain recovery and design new implementation strategies to maximise the benefits of these therapeutic advances.
I am a practising hospital neurologist and world leader in the prevention and treatment of stroke. Our research aims to realise exciting new break-throughs for stroke sufferers by testing the effectiveness and safety of new treatments that promise to improve recovery of function of damaged brain and reduce disability after stroke, and to prevent recurrent strokes.
Translating Science Into Treatment For Ischemic Stroke
Funder
National Health and Medical Research Council
Funding Amount
$431,000.00
Summary
My team has pioneered research in Australia that has advanced knowledge in the delivery of safer and more effective stroke therapies. I have developed software for the automated processing of multimodal CT imaging to better select patients for stroke therapies. In order to move this cutting-edge imaging technology into routine clinical practice several processes will occur: Implementation, validation and demonstration of patient benefits, and cost effectiveness of CT imaging selection in routine
Implementation Of Quality Use Of Advanced CT Imaging In Acute Stroke
Funder
National Health and Medical Research Council
Funding Amount
$1,128,594.00
Summary
Many centres now use advanced CT scanning techniques to assess stroke patient suitability for clot-dissolving treatment. However, there is major variation across Australia in the clinical application of advanced CT scanning techniques, which is a barrier to the delivery of this treatment. This project addresses the variation in CT imaging techniques by developing, piloting and evaluating the implementation of a standardised advanced CT scanning strategy for acute stroke patients.
Advanced Imaging For Patient Profiling In Patients With Stroke
Funder
National Health and Medical Research Council
Funding Amount
$319,831.00
Summary
Stroke is the leading cause of adult disability in the developed world. Many patients are require rehabilitation which can vary in terms of its success, and in many cases patients can be left with permanent and significant disability. Approaches to understand the neuroplastic changes associated with poststroke motor impairment are limited. This study aims to further our understanding of stroke recovery by undertaking a longitudinal MRI assessment of patients recovering from stroke.
Healthy Living After Stroke: An Online Intervention For Improving Stroke Survivor Health Behaviours And Quality Of Life
Funder
National Health and Medical Research Council
Funding Amount
$590,958.00
Summary
This study will test whether an online healthy lifestyles program helps survivors of stroke to live healthier lives, improve their quality of life and prevent a second stroke.
Improving Stroke Outcomes: Attenuating Progression And Recurrence
Funder
National Health and Medical Research Council
Funding Amount
$9,331,996.00
Summary
Stroke is the second most common cause of death and major cause disability. There are few proven interventions, so we need to introduce new ones. We developed a bench to bedside program to introduce new stroke therapies and its early secondary prevention. Our general goal is to provide evidence for their effectiveness and safety. We will use animal stroke models, markers in the blood to help diagnose and predict stroke outcome and imaging to help select patients for several clinical trials.