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Prenatal Alcohol Exposure: A Molecular Mechanism For Memory Deficits Involving The Zinc-binding Protein, Metallothionein
Funder
National Health and Medical Research Council
Funding Amount
$277,645.00
Summary
Damage to the developing brain is the major social and economic consequence of prenatal alcohol exposure but it is unclear the mechanism by which this occurs. This study will assess whether the maternal zinc-binding protein, metallothionein, causes: 1) alcohol-related cognitive deficits, 2) changes in the expression of alcohol-sensitive cognitive genes. We will further assess whether dietary zinc supplementation throughout pregnancy can prevent alcohol-related anomalies in neurodevelopment.
Creatine Supplementation In Pregnancy: Utilising Cells’ “Built-In” Energy Buffering System
Funder
National Health and Medical Research Council
Funding Amount
$318,768.00
Summary
Through pregnancy, the placenta transfers oxygen and nutrients from the mother to the baby. When a placenta doesn’t function properly a baby’s health is compromised. This can lead to morbidity or death. Creatine is the “back-up generator” of all cells and could help the failing placenta increase nutrient and oxygen delivery to the baby. This study will develop creatine as a potential new therapeutic, to improve the survival of babies of complicated pregnancies.
PROTECTING THE PRETERM FETAL BRAIN FROM HYPOXIA AND INFECTION: A HEALTHY START TO LIFE.
Funder
National Health and Medical Research Council
Funding Amount
$495,750.00
Summary
Brain damage during fetal life is a significant cause of later neurological problems such as cerebral palsy. Recent studies have shown that brain injury detected in infants is usually caused by adverse conditions within the uterus prior to labour, but the exact causes are poorly understood. It is also apparent that babies born prematurely are at increased risk of suffering serious brain damage. In recent years it has become evident that infections in the mother may be linked to both premature bi ....Brain damage during fetal life is a significant cause of later neurological problems such as cerebral palsy. Recent studies have shown that brain injury detected in infants is usually caused by adverse conditions within the uterus prior to labour, but the exact causes are poorly understood. It is also apparent that babies born prematurely are at increased risk of suffering serious brain damage. In recent years it has become evident that infections in the mother may be linked to both premature birth and brain damage. It has been proposed that certain chemicals (cytokines), which are released during an infection, can cross the placenta to the fetus causing inflammatory changes that lead to brain damage. We have shown that an inflammatory inducing chemical (bacterial endotoxin) administered to immature fetal sheep induces brain damage similar to that seen in cerebral palsy. This provides an excellent model for testing agents that are known to block the action of cytokines and other markers of inflammation; currently there is no effective strategy for the treatment or prevention of hypoxia and inflammatory induced injury of the brain partly due to our ignorance about how and when the damage is occurring. We will test the effects of two chemicals; N-acetyl cysteine, which is known to block the generation of inflammatory cytokines, and the naturally occurring glycoprotein erythropoietin, which prevents death of neurons (apoptosis). We hope that by blocking these pathways we may be able to prevent brain injury from occurring when the immature fetus is exposed to an infection during gestation. We expect that this project will provide important novel information that helps us to understand how infection in the mother can cause brain injury in the fetus and provide a new approach for strategies to prevent or treat brain injury.Read moreRead less
INVESTIGATING THE VALIDITY OF PRENATAL INSULTS AS RISK FACTORS FOR SCHIZOPHRENIA.
Funder
National Health and Medical Research Council
Funding Amount
$201,100.00
Summary
Schizophrenia is one of the most devastating of human mental disorders affecting about 1% of the population. The cause of this disorder is not known but it seems certain that it will involve genetic and environmental factors. An adverse environmental factor could be a reduced supply of oxygen and nutrients to a baby during pregnancy. In guinea pigs we aim to investigate whether disruption to the normal supply of oxygen and nutrients to the fetus disrupts the normal fine structure and chemical ma ....Schizophrenia is one of the most devastating of human mental disorders affecting about 1% of the population. The cause of this disorder is not known but it seems certain that it will involve genetic and environmental factors. An adverse environmental factor could be a reduced supply of oxygen and nutrients to a baby during pregnancy. In guinea pigs we aim to investigate whether disruption to the normal supply of oxygen and nutrients to the fetus disrupts the normal fine structure and chemical make up of the brain and gives rise to long-lasting structural and neurochemical changes in adolescent animals, which resemble changes found in the brains of patients with schizophrenia. We will also assess whether behavioural responses of compromised animals are altered in tests that parallel disturbances seen in patients with schizophrenia. Such abnormal brain development could create an underlying vulnerability in the brain, predisposing individuals with risk factors such as genetic inheritance to develop the symptoms of schizophrenia in later life perhaps only after the complete formation of nerve pathways involved in higher brain functioning. If guinea pigs that have been subjected to low oxygen levels during pregnancy show sustained changes in the structure and neurochemistry in regions of the brain that are altered in patients with schizophrenia it would suggest that these long lasting disturbances could result from problems during pregnancy. Thus, this would support the idea that abnormal brain development during pregnancy is one of the underlying causes of schizophrenia.Read moreRead less
The Impact Of Severe Asthma During Pregnancy On Placental Function And Fetal Hypothalamic-pituitary-adrenal Function
Funder
National Health and Medical Research Council
Funding Amount
$209,242.00
Summary
This study will examine whether the glucocorticoids administered for the control of severe asthma during pregnancy affects placental and fetal function. It is known that severe asthma during pregnancy is associated with low birth weight babies but the events that cause reduced growth of the baby are unknown. However in both animal and human pregnancies, increased exposure of the baby to glucocorticoids from the mother causes growth restriction of the baby. Therefore we propose that the increased ....This study will examine whether the glucocorticoids administered for the control of severe asthma during pregnancy affects placental and fetal function. It is known that severe asthma during pregnancy is associated with low birth weight babies but the events that cause reduced growth of the baby are unknown. However in both animal and human pregnancies, increased exposure of the baby to glucocorticoids from the mother causes growth restriction of the baby. Therefore we propose that the increased intake of glucocorticoids for the treatment of asthma during pregnancy changes how the placenta functions and allows the fetus to be exposed to maternal glucocorticoids causing changes in fetal development. We will examine placental blood flow and measure some placental enzymes that may be involved in the control of blood flow in placentas collected from women with mild, moderate and severe asthma and compare them to non-asthmatic women. We will look at placental blood flow in utero using Doppler ultrasound and also in vitro after the placenta is delivered. We want to see if the fetus is affected by increased intake of glucocorticoids by the mother by measuring a hormone estriol, which originates from the fetus. We will measure estriol throughout pregnancy as it can easily be detected in the mothers' urine. These studies will tell us if glucocorticoid intake for the treatment of asthma can exert effects on the placenta and baby during pregnancy. These studies will make a significant contribution both scientifically and clinically. At a scientific level we will be able to examine how increased maternal glucocorticoid intake during pregnancy affects placental mechanisms and whether these changes affect the fetus and clinically the outcome of this study will allow us to optimize asthma therapy during pregnancy so that we can improve the outcome for the baby.Read moreRead less
Defining The Role Of Zinc In Human Macrophage Responses To Salmonella
Funder
National Health and Medical Research Council
Funding Amount
$592,049.00
Summary
It is estimated that one third of the worlds population is affected by mild to moderate zinc deficiency, and that this predisposes to a range of infectious diseases. The immunomodulatory effects of zinc have been appreciated for many years, and indeed zinc supplementation is used to treat severe diarrhoeal diseases. This project aims to understand the anti-infective mechanisms of zinc by focusing on macrophages, a key cell type involved in killing invading microorganisms.
Mechanisms Of Intestinal Iron Absorption And Consequences Of Iron Supplementation During The Perinatal Period
Funder
National Health and Medical Research Council
Funding Amount
$526,878.00
Summary
Iron intake is particularly high during pregnancy and in the newborn to meet the requirements of the growing fetus and neonate. While it is widely recommended that women take iron supplements at this time, too much iron may adversely affect pregnancy outcome. The aim of this study is to understand the factors controlling iron intake in the perinatal and the consequences of excess iron. This will provide the physiological information required to make rational decisions about iron supplementation.
FETAL BRAIN INJURY RESULTING FROM INTRAUTERINE INFECTION: LONG TERM CONSEQUENCES AND THE POTENTIAL FOR INTERVENTION
Funder
National Health and Medical Research Council
Funding Amount
$452,640.00
Summary
Brain damage during fetal life is a significant cause of later neurological problems such as cerebral palsy. Recent studies have shown that brain injury detected in infants is usually caused by adverse conditions within the uterus prior to labour, but the exact causes are poorly understood. It is also apparent that babies born prematurely are at increased risk of suffering serious brain damage. Unfortunately, at present, it is not possible to prevent or effectively treat brain damage in the fetu ....Brain damage during fetal life is a significant cause of later neurological problems such as cerebral palsy. Recent studies have shown that brain injury detected in infants is usually caused by adverse conditions within the uterus prior to labour, but the exact causes are poorly understood. It is also apparent that babies born prematurely are at increased risk of suffering serious brain damage. Unfortunately, at present, it is not possible to prevent or effectively treat brain damage in the fetus or newborn, partly due to ignorance about how and when the damage is occurring. In recent years it has become evident that infections in the mother, may be linked to both premature birth and brain damage. It has been proposed that the certain chemicals (cytokines) which are released during an infection can across the placenta to the fetus, causing inflammatory changes that lead to brain damage. However, although associations have been shown in studies of women, there is little evidence that infections actually cause brain damage in the fetus. This project will define the effects of an inflammation inducing chemical (bacterial endotoxin) on the fetal brain and the pattern of inflammation it sets up in the fetus. We will also examine the effects of brain damage caused by endotoxin in the newborn lamb, and relate this to alterations in behaviour. Once we have defined the effects of endotoxin on brain structure, we will test the effects of chemicals that are known to block the actions of inflammatory cytokines. We hope that by blocking the chemical pathway that leads to the production of harmful cytokines we may be able to prevent brain injury from occurring when the fetus is exposed to an infection in the mother. It is expected that this project will provide important information that helps us to understand how infection in the mother can cause brain injury in the fetus. This information is vital if strategies to prevent or treat brain injury are to be developed.Read moreRead less
Good nutrition is a vital element in a healthy start to life. Determining the correct foods to ensure that pregnant women meet both their needs as well as those of their new baby can be very confusing. Do I need to take iron supplements? How can I ensure I get enough iodine? This project will develop new methods for evaluating the effects of nutrients and to pass that information on to health practitioners so that Australian mothers will be in no doubt about the best diet for them and their chil ....Good nutrition is a vital element in a healthy start to life. Determining the correct foods to ensure that pregnant women meet both their needs as well as those of their new baby can be very confusing. Do I need to take iron supplements? How can I ensure I get enough iodine? This project will develop new methods for evaluating the effects of nutrients and to pass that information on to health practitioners so that Australian mothers will be in no doubt about the best diet for them and their children.Read moreRead less
Neuroscience On Barriers In Development (NEUROBID)
Funder
National Health and Medical Research Council
Funding Amount
$600,927.00
Summary
The program aims to understand normal and disturbed brain barrier function in development to devise ways of preventing or ameliorating neurological conditions in infants or adult neurological disorders with developmental origins. Unique features of transport mechanisms across brain barriers will be used to design novel methods of targeting therapeutic macromolecular and cellular agents to the brain barriers and transporting them into brain for treatment of neurological diseases in young and old.