Mechanisms Contributing To Long-term Neuronal Loss After Hypoxia-ischemia In The Premature Neonate Brain.
Funder
National Health and Medical Research Council
Funding Amount
$432,535.00
Summary
A lack of oxygen (hypoxia) and blood flow to the brain (ischemia) around the time of birth can cause brain injury that perists into adulthood. The burdens on financial, educational and healthcare resources are enormous. We will improve our understanding of what parts of the brain are injured and the mechanisms contributing to on-going brain injury after hypoxia-ischemia.This is important to devise treatments and to provide a healthy start to life for neonates.
Executive Dysfunction And Brain Development In Very Preterm 13-year-olds - A Longitudinal MRI Study.
Funder
National Health and Medical Research Council
Funding Amount
$738,656.00
Summary
An area of concern for very preterm children is executive function (i.e. skills used for problem solving), which is related to educational problems, behavioural issues and social difficulties. In very preterm children this study will 1) determine if executive function problems remain stable, worsen, or improve with age; 2) look for markers for these problems from infant brain scans; and 3) examine how executive function difficulties are related to brain re-organisation.
Extracellular Acidosis And PH-modulating Drugs As Novel Therapies For Neuroprotection In Hypoxia/ischemia In The Newborn
Funder
National Health and Medical Research Council
Funding Amount
$452,310.00
Summary
Approximately 4 out of every 1000 babies suffer severe perinatal asphyxia (a period of a shortage of oxygen) during the birth process which carries with it a high risk of brain damage or death. Those babies surviving with a severe disability cost Australia $500,000,000 per annum in lifelong costs. With currently available methods, the presence of asphyxia is difficult to detect and hence prevention is often not possible. At present, there are no effective medications to treat asphyxia-related br ....Approximately 4 out of every 1000 babies suffer severe perinatal asphyxia (a period of a shortage of oxygen) during the birth process which carries with it a high risk of brain damage or death. Those babies surviving with a severe disability cost Australia $500,000,000 per annum in lifelong costs. With currently available methods, the presence of asphyxia is difficult to detect and hence prevention is often not possible. At present, there are no effective medications to treat asphyxia-related brain damage in babies. This study brings together a multi-disciplinary team driven by the clinical need to develop suitable strategies for neuroprotection in the developing brain. We will investigate the neuroprotective properties of the clinically relevant factor of acidosis and determine how acidosis influences neuroprotectant drugs. In the future, it is envisaged that this study will lead to rationally-based clinical trials aimed at improving neurodevelopmental outcomes for babies who suffer asphyxia and for infants who are victims of near-drowning or head trauma.Read moreRead less
Enhancing The Neuroprotective Benefit Of Hypothermia With Melatonin In The Asphyxiated Neonate
Funder
National Health and Medical Research Council
Funding Amount
$785,331.00
Summary
During labour, asphyxic episodes which cause a severe reduction in oxygen supply can become prolonged and result in perinatal brain injury, termed Hypoxic Ischemic Encephalopathy, which may underlie cerebral palsy. Presently, newborn infants with suspected encephalopathy are cooled, which modestly protects the brain against cellular injury. We propose that the administration of melatonin to the newborn, in addition to cooling, will decrease the post-asphyxic formation of oxygen free radicals, th ....During labour, asphyxic episodes which cause a severe reduction in oxygen supply can become prolonged and result in perinatal brain injury, termed Hypoxic Ischemic Encephalopathy, which may underlie cerebral palsy. Presently, newborn infants with suspected encephalopathy are cooled, which modestly protects the brain against cellular injury. We propose that the administration of melatonin to the newborn, in addition to cooling, will decrease the post-asphyxic formation of oxygen free radicals, thereby reducing the progression of brain damage.Read moreRead less
DETERMINING THE MECHANISMS LEADING TO LONG-TERM IMPAIRMENT IN VERY PRETERM CHILDREN: THE VIBeS LONGITUDINAL STUDY.
Funder
National Health and Medical Research Council
Funding Amount
$1,061,733.00
Summary
Approximately 50% of children born very preterm will develop significant problems. The objective of this project is to determine the mechanisms leading to these problems. We will do this by assessing at school-age a unique and valuable cohort of very preterm infants (VIBeS cohort) who had state-of-the-art brain scans shortly after birth and neurobehaviour assessments across early childhood. This school-age follow-up will involve repeat brain scans and detailed neuropsychological assessments.
I am a psychologist whose research program aims to improve the long-term well-being for children born very small or immature. My research focuses on 1) determining the nature and severity of cognitive and behavioural problems faced by children born very small-immature, 2) investigating how these problems are associated with brain injury and alterations to brain development, and 3) assessing the effectiveness of clinical interventions which aim to reduce complications and enhance development.
Novel Approaches To Assessing Cerebral Circulation And Oxygenation In Preterm Human Infants.
Funder
National Health and Medical Research Council
Funding Amount
$489,145.00
Summary
In the first few days after birth, some premature babies develop low blood pressure. It is thought that this meant that the amount of blood and oxygen going to the brain would also fall. If blood pressure became very low, this could injure the brain. Drugs are used to prevent low blood pressure, but their effect on blood flow and oxygen in the brain is uncertain. This study aims to develop simple cotside monitoring procedures that allow neonatologists to monitor oxygen supply and blood flow in t ....In the first few days after birth, some premature babies develop low blood pressure. It is thought that this meant that the amount of blood and oxygen going to the brain would also fall. If blood pressure became very low, this could injure the brain. Drugs are used to prevent low blood pressure, but their effect on blood flow and oxygen in the brain is uncertain. This study aims to develop simple cotside monitoring procedures that allow neonatologists to monitor oxygen supply and blood flow in the brain in tiny babies who weigh less than 1000gm, and what happens within the brain when drugs are given to raise blood pressure. We will employ a new instrument that generates low intensity near infrared light which passes safely into the brain and is absorbed according to the amount of oxygen present in very small blood vessels. As the methodology is new, we intend to first validate the measurement in immature lambs. The instrument will then be applied in studies of babies undergoing intensive care and at risk for low pressure and brain injury, as many as 5000 babies each year in Australia.Read moreRead less