Identifying components of a novel imprinting mechanism that regulates seed size in plants. Australia is a major exporter of agricultural food crops thus producers must maintain their competitive advantage in order to compete on the world stage. This project will study a fundamental biological process of seed development as seeds are a major food staple and an important export product for Australian farmers.
The kidneys of infants born preterm continue to develop after birth. However, preterm infants are exposed to high oxygen levels which may impact on ongoing development. In a rodent model of oxygen exposure, the blood vessels of the kidney and the numbers of stem cells will be assessed; additionally, further stem cells will be administered in order to try and prevent any impairment. It is expected that the findings of this study will help to explain the effects of preterm birth on the kidney.
Exploring The Physiological, Morphological And Molecular Bases Of Renal Developmental Programming.
Funder
National Health and Medical Research Council
Funding Amount
$422,264.00
Summary
Suboptimal fetal and neonatal development increases our risk of developing a range of diseases in adulthood. The concept that deleterious events during development can influence adult health is termed 'developmental programming'. Obtaining A Healthy Start to Life is a priority research goal of the Australian Government. The kidneys are particularly susceptible to developmental programming. This is in part because the functional units (nephrons) of the kidneys are all formed before birth in human ....Suboptimal fetal and neonatal development increases our risk of developing a range of diseases in adulthood. The concept that deleterious events during development can influence adult health is termed 'developmental programming'. Obtaining A Healthy Start to Life is a priority research goal of the Australian Government. The kidneys are particularly susceptible to developmental programming. This is in part because the functional units (nephrons) of the kidneys are all formed before birth in humans. Thus, if fetal development is suboptimal, babies are at risk of being born with a permanent nephron deficit, with functional and disease consequences. We have shown in male rats that the offspring of a maternal low protein diet have fewer nephrons and lower blood pressure than rats fed a normal diet. These rats display a striking sensitivity in adulthood to the feeding of a high salt diet. We will define the physiological and morphological bases of this sensitivity, and repeat these studies in females, as increasing evidence shows significant sex differences in developmental programming. Defining the molecular mechanisms of developmental programming is the greatest challenge for researchers in the field. We have recently completed the most comprehensive analysis to date of gene expression in the developing mouse kidney, and have shown for the first time that the mouse programmes kidney development. We will use the new techniques of genomics and bioinformatics to study the molecular mechanisms of kidney programming. This mechanistic data will provide an excellent hypothesis engine for future studies on the specific roles of these molecular pathways in developmental programming in all mammalian species.Read moreRead less
Sperm Methylation Status Predicts Embryo And Pregnancy Outcomes In Male Obesity
Funder
National Health and Medical Research Council
Funding Amount
$358,411.00
Summary
The incidence of male obesity in reproductively age men is epidemic and continually rising with close to 70% of men of reproductive age classified as overweight or obese. Male obesity is not only associated with sub fertility but also changes to pregnancy outcomes and influencing child health. This project will try to uncover the molecular changes in sperm, providing potential mechanisms for the abnormal foetal and pregnancy health seen as a result of male obesity.
Causal Pathways From Maternal Obesity To Pregnancy, Perinatal & Childhood Health Outcomes
Funder
National Health and Medical Research Council
Funding Amount
$775,703.00
Summary
Overweight and obesity affects more than 50% of women entering pregnancy. There are well-documented risks of poor health outcomes associated with obesity during pregnancy. We will evaluate whether an antenatal dietary and lifestyle intervention among pregnant women who are overweight or obese, acts via metabolic, hormonal, and inflammatory pathways, in the contribution of maternal obesity to adverse pregnancy, perinatal and early childhood health outcomes.
Birth is one of the greatest physiological challenges that we will ever experience and so it is not surprising that it is a period of high risk of death. Despite the risk, our understanding of how infants transition from fetal to newborn life is limited. My research is focused on improving our understanding of how infants make the transition at birth so that we can reduce the risks for these most vulnerable of humans. In particular, I want to improve outcomes for infants born very premature.
Understanding Mitochondrial DNA Segregation And Transmission.
Funder
National Health and Medical Research Council
Funding Amount
$512,449.00
Summary
We inherit our mitochondrial DNA from our mothers. Mutations to mitochondrial DNA can give rise to severely debilitating diseases that can be passed from one generation to the next. The aims of this application are to understand how mutant mitochondrial DNA is selected for; when it affects energy production during development; and to ensure that certain reproductive strategies do not result in the adverse transmission of mitochondrial DNA that will affect subsequent generations.
Identifying And Preventing Inflammation-induced Brain Injury In Preterm Infants
Funder
National Health and Medical Research Council
Funding Amount
$338,652.00
Summary
Exposure to infection/inflammation around the time of birth is one of the most common factors associated with long-term disability. There is no effective treatment. My studies will use world-class techniques for measuring brain structure and function to improve our understanding of how infection/inflammation impacts on development of the preterm brain and determine whether blocking key inflammatory pathways in the brain will help restore normal brain growth and development in preterm infants.
Intergenerational Transmission Of Gender-specific Metabolic Disease For Offspring Born Small: Maternal, Paternal And Embryonic Roles
Funder
National Health and Medical Research Council
Funding Amount
$689,050.00
Summary
This proposal addresses the underlying metabolic health consequences of poor embryo and growth of the baby across generations. We will define mechanisms by which a poor functioning placenta during a rat mother’s pregnancy programs her offspring born small to transmit gender-specific diseases to the next generation. We will identify mechanistic pathways involved, specifically the relative contributions of maternal and paternal germ lines and adverse maternal adaptations to pregnancy for females b ....This proposal addresses the underlying metabolic health consequences of poor embryo and growth of the baby across generations. We will define mechanisms by which a poor functioning placenta during a rat mother’s pregnancy programs her offspring born small to transmit gender-specific diseases to the next generation. We will identify mechanistic pathways involved, specifically the relative contributions of maternal and paternal germ lines and adverse maternal adaptations to pregnancy for females born small.Read moreRead less
Developmental Programming: Mechanisms And Interventions
Funder
National Health and Medical Research Council
Funding Amount
$705,501.00
Summary
Disturbances during pregnancy can impact on developmental processes and result in increased risk of disease in later life. This project will examine the impact of perturbations such as maternal stress or alcohol consumption on the development of the placenta and fetal kidney. By gaining an understanding of how these organs are affected by prenatal insults, we are likely to be able to develop more effective intervention strategies to ensure all babies receive a healthy start to life.