Fetal Cardiovascular Development And The Impact Of Chronic Hypoxia And Fetal Growth Restriction
Funder
National Health and Medical Research Council
Funding Amount
$307,232.00
Summary
Low birth weight occurs in 7% of Australian babies and is associated with an increased risk of cardiovascular disease in adult life. Understanding the mechanisms underlying heart and blood vessel development in low birth weight babies will lead to improved identification and intervention in those individuals at risk of cardiovascular disease in adult life, improving heart health for Australians. Reducing cardiovascular disease will improve both quality and quantity of life for Australians.
Mechanisms Of Abnormal Expression Of The IGF2 Gene In Disorders Affectin Foetal Growth
Funder
National Health and Medical Research Council
Funding Amount
$420,872.00
Summary
The IGF2 gene is crucial for foetal growth. Only the copy inherited from the father is active, a phenomenon named parental imprinting. In some children with foetal overgrowth or growth retardation, the deregulation of imprinting of the IGF2 gene during the first days of foetal development will influence subsequent growth and will also have major implications in post-natal and adult life. We will investigate the mechanisms resulting in abnormal imprinting of IGF2 early in development.
Prevention Of Placental Oxidative Stress And Inflammation By Dietary Omega-3 Fatty Acids
Funder
National Health and Medical Research Council
Funding Amount
$547,970.00
Summary
Several pregnancy disorders that result in low birthweight involve aberrant function of the placenta. In this project we will examine one of the key mechanisms underlying placental dysfunction, namely oxidative stress, and determine whether its adverse effects can be limited by supplementation with dietary omega 3 fatty acids. The outcomes of this project will help guide future clinical studies on the possible beneficial effects of omega-3 fatty acids in pregnancy.
I am a reproductive biologist specialised in the cell and molecular biology of placental development in pregnancy. I focus on determining the molecular mechanisms that govern placental invasion, growth and function and how these are altered in defective placentation which underlies common complications of pregnancy that can be life threatening to the mother and her baby compromising a healthy start to life. I am developing screening tests to identify couples at risk to improve patient care.
P-glycoprotein: A New Player In The Placental Glucocorticoid Barrier
Funder
National Health and Medical Research Council
Funding Amount
$424,711.00
Summary
Adequate growth and development of the fetus are crucial for survival of the newborn. The placenta plays a central role in these processes, providing the fetus with appropriate nutrients and hormonal signals. The placenta also regulates the maternal-fetal passage of hormones, some of which have the capacity to limit fetal growth. These include glucocorticoid hormones from the mother's adrenal gland (eg cortisol) which are normally prevented from passing through the placenta to the fetus due to t ....Adequate growth and development of the fetus are crucial for survival of the newborn. The placenta plays a central role in these processes, providing the fetus with appropriate nutrients and hormonal signals. The placenta also regulates the maternal-fetal passage of hormones, some of which have the capacity to limit fetal growth. These include glucocorticoid hormones from the mother's adrenal gland (eg cortisol) which are normally prevented from passing through the placenta to the fetus due to the 'placental glucocorticoid barrier'. The primary focus of this proposal is the investigation of a potential new contributor to this barrier called P-glycoprotein (P-gp), recently shown to limit access of glucocorticoids to the brain. We propose that because the placenta expresses significant amounts of P-gp, it may help prevent maternal glucocorticoids from reaching the fetus and causing growth retardation. We will determine whether P-gp is a significant contributor to the placental glucocorticoid barrier, and measure how much P-gp is present in normal placentas throughout pregnancy. We will also assess whether there is less P-gp present in placentas of growth-retarded fetuses. Understanding how P-gp affects the passage of glucocorticoids across the placenta could help to treat certain cases of fetal growth retardation.Read moreRead less
The Role Of Oxygen Sensing In The Regulation Of Trophoblast Invasion
Funder
National Health and Medical Research Council
Funding Amount
$404,323.00
Summary
Normal fetal development requires the placenta to successfully invade the mother's uterus so that the baby can be appropriately nourished. It is well known that a failure of normal placental development is associated with two major complications of pregnancy: pre-eclampsia and intrauterine growth restriction. This study is designed to discover whether placental cells have special oxygen sensing mechanisms that help them home in to areas where there is high oxygen.
Optimising Lung Surfactant Protein Production In The IUGR Fetus At Risk Of Preterm Delivery
Funder
National Health and Medical Research Council
Funding Amount
$463,853.00
Summary
Pregnant women at risk of preterm labour after 24 weeks gestation are increasingly administered glucocorticoids in Australian hospitals in order to promote fetal lung maturation and a successful transition to extrauterine life. Antenatal glucocorticoid treatment reduces overall neonatal mortality, the risk of respiratory distress syndrome and the need for respiratory support. Babies that are born small may not benefit from this treatment in the same way that average size babies benefit.