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GABA Excitotoxicity, Neuroprotection And The Perinatal Brain
Funder
National Health and Medical Research Council
Funding Amount
$547,970.00
Summary
Approximately 3.5% of babies die each year from brain damage due to perinatal asphyxia, a shortage of oxygen to the developing brain. Babies that survive face lifelong neurological disabilities, placing enormous burden on health, social and economic resources. Current treatments are inadequate. We will examine what occurs when there is a shortage of oxygen to the developing brain and investigate pathways to hypoxic brain injury that offer opportunities for therapeutic intervention.
A Randomised Controlled Trial Of Whole Body Cooling On The Outcome Of Term Infants With Hypoxic Ischaemic Encephalopathy
Funder
National Health and Medical Research Council
Funding Amount
$386,732.00
Summary
The aim of this project is to investigate whether the brain damage caused by a serious lack of oxygen around the time of birth can be prevented or reduced by cooling the baby's temperature to 34C for 72 hours. The consequences, of a lack of oxygen, to the brain, around the time of birth can be devastating. Over 30% of those babies with abnormal brain function soon after birth either die or survive with severe permanent brain damage. There is no specific treatment for these infants. Evidence from ....The aim of this project is to investigate whether the brain damage caused by a serious lack of oxygen around the time of birth can be prevented or reduced by cooling the baby's temperature to 34C for 72 hours. The consequences, of a lack of oxygen, to the brain, around the time of birth can be devastating. Over 30% of those babies with abnormal brain function soon after birth either die or survive with severe permanent brain damage. There is no specific treatment for these infants. Evidence from studies in animals, as well as human adults and a small number of newborn infants, suggests that moderate body cooling started soon after birth in babies with serious abnormal brain function might prevent or reduce brain damage. This project is a multicentre trial, where infants who have suffered from a severe lack of oxygen around birth, are randomised to body cooling to 34C for 72 hours. This will be started as soon as possible after birth at their hospital of birth. If the baby needs to be transported this will be started when the newborn transport team collects the baby for transfer to a newborn intensive care unit. This new treatment will be compared with maintaining the baby's temperature at 37C. This project will investigate a new, simple and pragmatic treatment that might reduce brain damage. If it finds that cooling infants who have been severely deprived of oxygen is an effective and safe treatment, the information will be applicable to any of the very large number of babies around the world who suffer from a serious lack of oxygen around the time of birth.Read moreRead less
Newborn babies are at risk of becoming short of oxygen during delivery. Death or brain damage may result. In the days after birth, when the brain is attempting to recover from the lack of oxygen, seizures (also called fits) are common. Seizures may cause further damage to the brain because they release damaging chemicals such as glutamate or because they make extra energy demands on the brain that cannot be met. It is difficult to be certain whether unusual movements or twitches are seizures or ....Newborn babies are at risk of becoming short of oxygen during delivery. Death or brain damage may result. In the days after birth, when the brain is attempting to recover from the lack of oxygen, seizures (also called fits) are common. Seizures may cause further damage to the brain because they release damaging chemicals such as glutamate or because they make extra energy demands on the brain that cannot be met. It is difficult to be certain whether unusual movements or twitches are seizures or not. To detect seizures, it is necessary to measure the EEG, the tiny electrical signals from the brain that can be measured from the scalp using small stick on electrodes. It is difficult to measure EEG, particularly for longer periods, because the electrodes may fall off, the baby may move excessively or electrical interference may ruin the recording. We are proposing to measure EEG for 48 hours in babies who have suffered a lack of oxygen during delivery. We will develop, optimise and implement a new method of automatically detecting seizures, building upon 6 years of fundamental signal processing research work that we have done in the newborn. We will test this system against the 'gold standard' to determine how accurate it will be in detecting seizures. We will also try to find out whether damage in particular areas of the brain or in particular cell types within the brain is most likely to be associated with seizures. The anticipated outcome is that we will be able to accurately identify seizures. This is a major step on the path to being able to prevent injury to the brain and to monitor the effectiveness of new experimental treatments.Read moreRead less
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
Evaluation Of Pathogenic Mechanisms Involved In Nuclear And Mitochondrial DNA-encoded Mitochondrial Disorders
Funder
National Health and Medical Research Council
Funding Amount
$196,527.00
Summary
Mitochondria produce energy for the cell. Disorders of mitochondrial function can cause human disease. These diseases are referred to as the mitochondrial disorders. Mitochondrial disorders usually involve multiple tissues, particularly the muscle and brain.These disorders are usually caused by mutations in two different types of DNA; nuclear and mitochondrial DNA. There are many forms of mitochondrial disorders; some affect young children or infants and others cause adult disease. In some cases ....Mitochondria produce energy for the cell. Disorders of mitochondrial function can cause human disease. These diseases are referred to as the mitochondrial disorders. Mitochondrial disorders usually involve multiple tissues, particularly the muscle and brain.These disorders are usually caused by mutations in two different types of DNA; nuclear and mitochondrial DNA. There are many forms of mitochondrial disorders; some affect young children or infants and others cause adult disease. In some cases, genetic defects may cause the same disease and other mutations may cause a wide range of symptoms. The reason why this occurs is unknown. This study investigates several factors that may determine why some mutations lead to a certain disease and why others may cause different diseases. These factors include the variation in energy levels that are produced by the mutant cells, and the different levels of vunerability that mutated cells may have to induced cell death. The goal of this proposal is to identify the factors that lead to mutations causing different clinical symptoms with the overall aim being to design treatment for these chronic diseases.Read moreRead less
I aim to understand the genetics of the epilepsies. Through detailed analysis of different types of epilepsy, and associated features such as intellectual disability and autism, I will describe new epilepsy syndromes, and together with gene discovery, implement novel targeted therapies. This translational program will transform clinical practice by informing diagnosis, prognostic and genetic counseling, and lead to targeted precision therapies to improve outcomes for each patient.
Autoimmune Channelopathies In Paediatrics Epilepsy
Funder
National Health and Medical Research Council
Funding Amount
$47,877.00
Summary
Epilepsy is one of the commonest neurological disorders. Some children with epilepsy have a known cause for their epilepsy; however in most cases the cause is unknown. One of the proposed causes is auto antibodies targeted against specific brain channels, resulting in seizures. This study will determine whether some patients with epilepsy have antibodies in the blood that lead to epilepsy. By defining an immune mediated epilepsy, we can treat and stop the epilepsy.
The Incidence And Genetics Of The Infantile Epileptic Encephalopathies
Funder
National Health and Medical Research Council
Funding Amount
$175,224.00
Summary
Severe epilepsies with frequent seizures and cognitive impairments in the first 18 months of life are known as ‘infantile epileptic encephalopathies’ (IEE). The cause of IEE is unknown in many patients, although presumed genetic. This study of patients with IEE in Victoria aims to describe the incidence of IEE, and understand the genetic causes of IEE. Understanding the causes of IEE will be the first step towards development of urgently-needed novel therapies for these devastating conditions.
Advances In The Understanding Of Autoimmune Encephalitides And Associated Movement Disorders In Children
Funder
National Health and Medical Research Council
Funding Amount
$68,832.00
Summary
Encephalitis in childhood can be devastating with long lasting effects and mortality. This research focuses on children who suffer from encephalitis due to an autoimmune process. In such cases many children present with involuntary abnormal body movements. This project will explore whether differences in the nature of these movements or in electroencephalography or brain imaging with MRI, can help early differentiation of different types of autoimmune encephalitis.