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This proposal seeks to develop a novel non-invasive method of measuring intra-cranial pressure, an important diagnostic parameter in many form of brain injury or neural disease. It works by quantitative video analysis of the pulsation of the major vein in the eye during induced rises in eye pressure. Many years of study by our group have determined the relationship between vein pulsation pressure and intra-cranial pressure, and this information is used to produce an accurate measurement of intra ....This proposal seeks to develop a novel non-invasive method of measuring intra-cranial pressure, an important diagnostic parameter in many form of brain injury or neural disease. It works by quantitative video analysis of the pulsation of the major vein in the eye during induced rises in eye pressure. Many years of study by our group have determined the relationship between vein pulsation pressure and intra-cranial pressure, and this information is used to produce an accurate measurement of intra-cranial pressure without the need for surgery.Read moreRead less
Characterising A Newly Identified Mechanism Causing Elevation Of Intracranial Pressure After Acute Neurological Injury
Funder
National Health and Medical Research Council
Funding Amount
$510,905.00
Summary
Our group discovered that increased pressure on the brain (intracranial pressure – ICP) may be more common and important than has been recognised following stroke, and potentially other brain disorders. We also identified a simple potential therapy, short-duration body cooling, which completely prevents the pressure rise. In this project we will characterise the ICP rise, identify its molecular trigger and determine the best method of body cooling tor use in clinical trials in stroke patients.
A New Understanding Of Stroke Pathophysiology: Late Infarct Expansion May Be Under-recognised And Easily Preventable.
Funder
National Health and Medical Research Council
Funding Amount
$411,496.00
Summary
Stroke caused by a blood clot blocking a brain artery is one of the leading causes of death and disability. We recently discovered that pressure in the skull rises 24 h after stroke. Increasing evidence suggests that this causes growth of the stroke through its effects on brain blood flow. We will measure the blood flow reduction caused by the pressure rise and how frequent it is, then determine how much brain is saved and disability prevented by blocking it.
Improving Clinical Translation In Stroke: Targeting Cerebral Oedema In A Large Animal Model
Funder
National Health and Medical Research Council
Funding Amount
$637,530.00
Summary
A common and life-threatening complication of stroke is brain swelling which is the leading cause of death within one week of stroke and a predictor of poor outcome. Current treatments for brain swelling are inadequate. We have developed a drug that blocks the action of the neuropeptide substance P, which is involved in the development of swelling. We will assess the efficacy of this treatment to reduce brain swelling and improve long-term outcome in a relevant pre-clinical model of stroke.
CSF Physiology: Flow In The Spinal Cord And Subarachnoid Space
Funder
National Health and Medical Research Council
Funding Amount
$375,775.00
Summary
Fluid flow in the brain and spinal cord is important in health and disease. Increased fluid leads to hydrocephalus and spinal cord cysts. Impaired flow through the brain and cord contributes to Alzheimer's disease and other disorders. How fluid flows through the brain and spinal cord is poorly understood. We will study important aspects of flow in the spinal cord and how flow is affected by obstructions in the fluid pathways.
New Therapies For Stroke – Preventing Stroke Progression And Enhancing Recovery
Funder
National Health and Medical Research Council
Funding Amount
$463,652.00
Summary
Stroke is a major cause of death and disability worldwide. Dr Spratt’s team have discovered a new mechanism causing pressure to rise in the skull after stroke. They will build on their discovery of a promising new therapy to prevent early worsening of stroke and improve patient outcomes. He also leads a team studying better stroke recovery by promoting activity by enriching the rehabilitation environment, and ways to improve fitness in stroke survivors.
Raised Intracranial Pressure After Trauma: Characterisation And Development Of Pharmacological Interventions
Funder
National Health and Medical Research Council
Funding Amount
$589,788.00
Summary
Raised intracranial pressure (ICP) commonly occurs after traumatic brain injury (TBI) and is thought to be responsible for up to 50% of all mortality, as well as significantly contributing to the persistent neurological deficits in survivors. Few studies have examined the dynamics of raised ICP after TBI, or its effects on brain oxygenation. This study will fully characterize changes in ICP and brain oxygen after TBI and develop novel treatments to control such changes.
Shaken Baby Syndrome: Characterization Of A Model And Evaluation Of Novel Pharmacological Therapies
Funder
National Health and Medical Research Council
Funding Amount
$412,460.00
Summary
Shaken baby syndrome is a form of traumatic brain injury in infants less than 2 years of age. It results in death in 10-40 % of cases, and neurological problems in survivors. No treatment exists largely because there is no well characterized model of the syndrome that replicates the human situation. This study will fully characterize our newly developed model of shaken baby syndrome and examine the effectiveness of a novel interventional strategy targeting brain swelling.
Short Duration Hypothermia To Prevent Subsequent Intracranial Pressure Rise.
Funder
National Health and Medical Research Council
Funding Amount
$436,453.00
Summary
Elevated brain pressure after stroke or other forms of brain injury can cause further injury and death. Body cooling to 32-33 C (hypothermia) for 12-24 hours saves lives after some forms of brain injury, but may have major side effects. We found that 2 hours hypothermia has a long-lasting effect preventing pressure elevation. We will determine the best temperature and duration of hypothermia in a stroke model and use imaging to confirm findings in patients, with a view to later human trials.
A New Paradigm To Prevent Intracranial Hypertension
Funder
National Health and Medical Research Council
Funding Amount
$408,388.00
Summary
Increasing brain pressure after stroke or other forms of brain injury can cause further injury and death. Body cooling by 4-5 0C (hypothermia) for 12-24 hours saves lives after some forms of brain injury, but may have major side effects. We found that 2 hour hypothermia has a long-lasting effect preventing pressure elevation. We will determine the best temperature and duration of hypothermia in a stroke model and use imaging to confirm findings in patients, with a view to later human trials.