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Defining Regional Lung Mechanics To Improve Lung Protective Ventilation Strategies In Newborn Infants
Funder
National Health and Medical Research Council
Funding Amount
$287,321.00
Summary
Over 3000 newly born infants require mechanical ventilation in Australia every year. The majority are very premature infants. About 30% of ventilated infants develop serious ventilator induced lung injury. Minimising such lung injury with improved techniques of ventilation which can protect the lung from injury will reduce the considerable short and long term health burden of this population.
Improving The Neonatal Transition In Infants With A Congenital Diaphragmatic Hernia
Funder
National Health and Medical Research Council
Funding Amount
$551,644.00
Summary
Congenital diaphragmatic hernia is a common congenital abnormality and occurs when the diaphragm fails to separate the abdominal and thoracic compartments before birth. This prevents the lung from growing properly and so at birth, the lung is unable to take over the role of gas exchange without considerable assistance. As a result, these infants are at high risk of death or significant disability and this application is focused on improving care and reducing morbidity in these infants.
Defining Genetic And Epigenetic Variation During Early Development
Funder
National Health and Medical Research Council
Funding Amount
$996,075.00
Summary
We all began life with a set of genes inherited from our parents. However, it's now known that from the time we were in the womb onwards that genes can be turned off and on by the environment or even completely lost or gained. Even what your mother ate or how she behaved while she was pregnant could have influenced your future health. Because people are so different, we are studying the subtle differences between twins to tease out the factors that may influence our genes and our health.
The Predictors Of Asthma And Lung Function Deficits In The Third Decade: Longitudinal Study Of MACS Sibships
Funder
National Health and Medical Research Council
Funding Amount
$1,176,908.00
Summary
This will be the world’s first birth cohort study to use substantial prospective data to investigate how biological, psychosocial, and environmental markers from birth will predict asthma and lung function in the third decade of life. Our findings will be crucial to the development of new policy and practice for the prevention and management of these conditions and uncover crucial risk factors for young adult asthma.
Neurosteroid Mediated Protection After Birth: Approaches For Maximising Protective Steroid Levels In The Neonatal Brain
Funder
National Health and Medical Research Council
Funding Amount
$450,703.00
Summary
Complications during pregnancy, birth asphyxia or premature birth can lead to neurological impairment in the newborn. Despite excellent neonatal care many of these babies go on to have serious handicaps. Neurosteroids are a group of steroids that regulate brain activity. These steroids protect brain cells from damage caused by an inadequate supply of oxygen by suppressing toxicity caused by excessive activity. We have shown that the levels of these protective steroids are remarkably high in the ....Complications during pregnancy, birth asphyxia or premature birth can lead to neurological impairment in the newborn. Despite excellent neonatal care many of these babies go on to have serious handicaps. Neurosteroids are a group of steroids that regulate brain activity. These steroids protect brain cells from damage caused by an inadequate supply of oxygen by suppressing toxicity caused by excessive activity. We have shown that the levels of these protective steroids are remarkably high in the fetal brain and levels rise further in response to fetal stress. The placenta contributes steroid precursors that help maintain these high neurosteroid levels. This placenta-fetal brain interaction comprises an internal mechanism that protects the fetal brain from adverse events during pregnancy. At birth, however, there is a dramatic decline in neurosteroid concentrations in the brain after the loss of the placental precursor supply. The fall in concentrations is even greater in animals that are born growth restricted. This suggests that newborns, particularly those from compromised pregnancies, are at increased risk of brain damage due to low neurosteroid levels. We believe that certain commonly used steroid therapies may also lower steroid levels in the brain and result in increased vulnerability to brain damage during birth or in the early neonatal period. Alternatively, we propose that replacement of neurosteroid precursors in the newborn may raise brain neurosteroid levels and protect against brain damage. In the proposed studies we will evaluate treatments that can raise the concentration of steroids and determine the best strategy for reducing brain injury following complications during pregnancy, at birth and during the early newborn period. This work will determine the best therapeutic approaches for maximising neurosteroid-induced brain protection and for reducing the risk of brain damage.Read moreRead less
Preclinical Development Of TLR Signalling Inhibitors For Prevention Of Preterm Labour And Fetal Inflammatory Injury
Funder
National Health and Medical Research Council
Funding Amount
$690,821.00
Summary
Preterm birth affects 8% of Australian births and is a major cause of infant and child health problems. Therapies to prevent or delay prematurity are urgently required. This study will investigate new drugs that suppress the triggers of preterm labour. We will evaluate drug effects in mice and human placental tissue, to demonstrate safety and fetal protection from inflammatory injury that occurs with prematurity. Successful completion of the study is expected to lead to clinical trials in women.
Reducing The Effects Of Antenatal Alcohol On Child Health (REAACH)
Funder
National Health and Medical Research Council
Funding Amount
$2,497,397.00
Summary
Use of alcohol in pregnancy can affect the developing baby and cause Fetal Alcohol Spectrum Disorders (FASD). Children with FASD have lifelong brain injury that can lead to poor school performance, poor mental health and trouble with the law. This CRE builds on our strong background in research and community engagement to improve FASD prevention, diagnosis and treatment across Australia.
Neuroactive Steroids In The Developing Brain: Potential For Preventing Perinatal Brain Damage
Funder
National Health and Medical Research Council
Funding Amount
$481,500.00
Summary
Complications during pregnancy, birth asphyxia or premature birth can lead to serious neurological impairment in the newborn. Despite excellent neonatal care many of these babies go on to have serious handicaps. Neuroactive steroids are a group of neuromodulators that are derived from the hormone progesterone. These steroids fall into two groups, those that appear to protect brain cells from damage caused by an inadequate supply of oxygen and those that may increase cell death. We have shown tha ....Complications during pregnancy, birth asphyxia or premature birth can lead to serious neurological impairment in the newborn. Despite excellent neonatal care many of these babies go on to have serious handicaps. Neuroactive steroids are a group of neuromodulators that are derived from the hormone progesterone. These steroids fall into two groups, those that appear to protect brain cells from damage caused by an inadequate supply of oxygen and those that may increase cell death. We have shown that protective neuroactive steroids are present in very large amounts in the fetal brain. Steroids produced by the placenta are converted to these neuroactive products by enzymes in the brain leading to the high levels that are seen during fetal life. Certain adverse conditions during pregnancy as well as preterm birth may cause marked changes in the balance of steroids that could increase susceptibility to brain injury. We have found that areas of the brain, where damage most often occurs, normally contain the highest amount of protective steroids, but only in late pregnancy. This suggests that disturbances that lower steroid production in these areas could contribute to the death of cells, particularly in mid-pregnancy and after premature birth. In the proposed studies, we will examine whether a toxic balance of steroids develops following adverse events in pregnancy as well as the areas of the brain where this is most pronounced. We will examine the changes in the expression of enzymes that can potentially cause the accumulation of protective steroids in the brain. We will then examine treatments that can raise the concentration of steroids and determine which combination of steroids best reduces cell death and brain injury following complications during pregnancy. The findings of this work will indicate the best therapeutic approach that may be adopted to modify the concentration of certain steroids so as to reduce the risk of brain damage in the fetus and neonate.Read moreRead less
Who determines gestation length - mother or fetus? This project will extend our knowledge of a key biological process - pregnancy. Variation of gestation length by 10% is generally deleterious to the offspring, and smaller babies have been shown to be more susceptible to later life diseases. Therefore, extension of the information gained from this project will likely impact researchers in species conservation, pest control, and the livestock industries, as well as human, obstetric care and pract ....Who determines gestation length - mother or fetus? This project will extend our knowledge of a key biological process - pregnancy. Variation of gestation length by 10% is generally deleterious to the offspring, and smaller babies have been shown to be more susceptible to later life diseases. Therefore, extension of the information gained from this project will likely impact researchers in species conservation, pest control, and the livestock industries, as well as human, obstetric care and practice. Specifically, knowledge gained from this project may lead to means of limiting (pest control) as well as enhancing (endangered species) species survival.Read moreRead less
Environmental Influences In The Establishment Of The Epigenetic Landscape In Children
Funder
National Health and Medical Research Council
Funding Amount
$695,097.00
Summary
The DNA in each of our cells does not exist alone, it is packaged into complex structures called chromosomes, through association with many different proteins. The distribution of these proteins varies along the length of a chromosome depending on the type of cell and this phenomenon is called 'epigenetics', literally meaning 'above the DNA'. Epigenetic analysis is the study of how proteins and other molecules can change the activity of a gene without changing the DNA sequence. All of our cells ....The DNA in each of our cells does not exist alone, it is packaged into complex structures called chromosomes, through association with many different proteins. The distribution of these proteins varies along the length of a chromosome depending on the type of cell and this phenomenon is called 'epigenetics', literally meaning 'above the DNA'. Epigenetic analysis is the study of how proteins and other molecules can change the activity of a gene without changing the DNA sequence. All of our cells use epigenetic changes to help control how they grow and develop. Evidence suggests a direct link between diet and environmental influences on our epigenetic profile. Recent research has traced the origins of many of the health problems of adult life back to the earliest periods of development _ to the time spent in the womb and the first few years of life. If we are born with a low birth weight, we are more likely to get sick later in life. Overwhelming evidence exists that the environment in the womb is critical for a healthy birth weight (and health in later life) and it is thought that epigenetics may be the missing link between this environment, low birth weight, and therefore health in later life. In addition, mounting evidence supports a general link between epigenetic de-regulation and predisposition to disease. However, the timing and the overall contribution of environmental- genetic influences to the establishment of faulty epigenetic markings remain largely unknown. Twins are the best model to study this link as they share similar (but not identical environments) and some share identical genetic makeup. Using twins, Dr Jeffrey Craig and his team will investigate the factors in the prenatal environment that modify specific cells, leading to low birth weight and increase disease risk later in life. They predict that this occurs via specific changes in gene activity caused by epigenetic disruption.Read moreRead less