Establishing A Model Of Occlusive Middle Cerebral Artery Stroke In The Sheep
Funder
National Health and Medical Research Council
Funding Amount
$74,365.00
Summary
Stroke is the second leading cause of death and the highest cause of disability in adult Australians, however our lack of an animal model that correctly replicates the human condition has severely hindered our understanding and treatment of the disease. This research project aims to develop a model of stroke in the sheep using a surgical approach that future researchers may use and adapt to further explore the physiology of the disease and trial therapeutic techniques to treat stroke.
Astrocytic Contributions To Tissue Damage And Dysfunction In Stroke
Funder
National Health and Medical Research Council
Funding Amount
$275,810.00
Summary
Stroke is a primary cause of disability and death in adults. The symptoms of stroke arise from damage to brain tissue following disruptions to blood flow. At present, there are few options for treatments to limit the extent of tissue damage and the consequent disruption to function. Although, there have been considerable advances in understanding the cellular and molecular processes underlying the tissue damage, many issues are unresolved. A better understanding of these processes is likely to o ....Stroke is a primary cause of disability and death in adults. The symptoms of stroke arise from damage to brain tissue following disruptions to blood flow. At present, there are few options for treatments to limit the extent of tissue damage and the consequent disruption to function. Although, there have been considerable advances in understanding the cellular and molecular processes underlying the tissue damage, many issues are unresolved. A better understanding of these processes is likely to open up new avenues for ameliorating damage and improving outcomes for stroke patients. Astrocytes are one of the major populations of cells in the brain. They play key roles in supporting normal brain function and protecting nerve cells in the brain. Because of their many functions, these cells offer considerable potential as a therapeutic target in stroke. Unfortunately, the responses of astrocytes in this disorder are poorly understood due partly to a lack of techniques to distinguish their contributions from that of other cells in the brain. We have recently designed a novel system using antibodies to deliver genes into selected populations of nerve cells in the nervous system and thus to selectively alter the function of these cells. In the proposed study, we will adapt this technique to selectively modify gene expression in astrocytes. We will then apply the procedure to determine the consequences of altering key functions in astrocytes on the brain damage and behavioural changes that develop in an animal model of stroke. The successful completion of this research will provide a powerful means to investigate the function of astrocytes, not only in diseases such as stroke but also in normal brain. We will also gain novel insights into the astrocytic role in the damage and dysfunction resulting from stroke that have potential applications in developing new therapies.Read moreRead less
Glial Reactivity During The Post-acute Phase Of Stroke: A Target For Promoting Functional Recovery
Funder
National Health and Medical Research Council
Funding Amount
$547,307.00
Summary
Recent studies suggest that the development of a type of scar around damaged tissue in the brain following a stroke can limit recovery. Our studies will improve understanding of events leading to scar formation and will test whether modifying these events can improve functional recovery in experimental stroke. The studies have excellent potential to identify targets for treatments that will reduce the long-term debilitating effects of stroke even when administered well after its onset.
Stroke Induced Disturbances In Glymphatic Clearance: Implications For Brain Repair?
Funder
National Health and Medical Research Council
Funding Amount
$491,688.00
Summary
We have made a remarkable discovery that the ability of the brain to clear waste proteins is significantly impaired after stroke. This may have important implications for development of dementia and milder changes in thinking late after stroke. We already have some clues regarding potential mechanisms. In this project we will further investigate these mechanisms and their effects on the brain and develop our understanding of potential ways to reverse the clearance problem to develop treatments.
10-year Outcome After Stroke: Final Follow-up For Survival, Stroke Recurrence, Functional Ability And Costs
Funder
National Health and Medical Research Council
Funding Amount
$51,475.00
Summary
Stroke is common, occurring in approximately 50,000 Australians each year. About a third of people with stroke die within the first 12 months but we do not know how many survive or how well they manage in the longer term. We aim to interview 10-year survivors of stroke to assess how much help they need to undertake everyday activities, and how much the stroke is costing the Australian community. This information will help us in planning the health care needs for stroke patients in future years.
Long-term Outcome After Stroke: Survival, Stroke Recurrence, Functional Ability And Costs.
Funder
National Health and Medical Research Council
Funding Amount
$649,971.00
Summary
Stroke is the third most common cause of death in Australia, and is more common in the older age groups. Because the population most at risk of developing stroke is growing faster than the rest of the population, it is likely that there will be a large increase in the number of strokes occurring in coming years. At 1 year after stroke about one-third of patients have died, a third remain severely disabled and a third recover with minimal disability. In Australia, there is no information on outco ....Stroke is the third most common cause of death in Australia, and is more common in the older age groups. Because the population most at risk of developing stroke is growing faster than the rest of the population, it is likely that there will be a large increase in the number of strokes occurring in coming years. At 1 year after stroke about one-third of patients have died, a third remain severely disabled and a third recover with minimal disability. In Australia, there is no information on outcome beyond 5 years. It is thought that at 10 years after stroke about 70% of patients will have died, and a further 5-10% will have had another nonfatal stroke. The aim of this study is to assess the long-term outcome of patients with stroke. These will include measures of survival, stroke recurrence, and ability to perform usual daily activities. The use of health care and community resources and the associated costs of this will also be assessed. Information on survival patterns, stroke recurrence, disability and costs will be of great value for health service planning. Such information will also be useful to patients, their families, and medical staff who treat these patients.Read moreRead less
Shared Team Approach Between Nurses And Doctors For Improved Risk Factor Management (STAND FIRM)
Funder
National Health and Medical Research Council
Funding Amount
$1,945,676.00
Summary
There are many proven treatments for preventing people with stroke from having a recurrent event, e.g. maintaining blood pressure at acceptable levels. However, uptake of therapies is poor. We will assess whether patients receiving individualised management plans, prepared and administered by both doctors and nurses will have risk factors controlled better than those receiving usual care. The plan includes education of patients to help them have more control over their own care.