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Altered Renal Development Programs Adult Hypertension
Funder
National Health and Medical Research Council
Funding Amount
$607,289.00
Summary
If a mother suffers an adverse condition during pregnancy - such as high blood pressure - the development of the baby is altered, putting it at increased risk of cardiovascular disease in adulthood. Our study in rabbits examine the role that changes to nerves in the kidney play in the development of high blood pressure later in life and whether it can be prevented via short-term anti-hypertensive treatment in the postnatal period .
I am an integrative cardiovascular-renal physiologist determining the role the kidney plays in the regulation of arterial blood pressure in health and disease.
Neural Control Of Renin Expression By MicroRNA In Hypertension
Funder
National Health and Medical Research Council
Funding Amount
$805,972.00
Summary
We identified that mice bred to have high blood pressure have an overactive nervous system that affects a gene that controls a hormone in the kidney that increases blood pressure. The proposal will determine the effects of a novel treatment to alter the gene to reverse the changes in the kidney and thereby normalizing blood pressure. This will lead to new therapy and reduce the major risk factor of cardiovascular disease.
Maternal Recognition Of Fetal Sex In The Regulation Of Labour
Funder
National Health and Medical Research Council
Funding Amount
$455,821.00
Summary
Preterm birth is the largest cause of death in infants and males are more likely to be born preterm than females. We propose that the intrauterine renin-angiotensin system, the activity of which is regulated in a sex-specific manner, plays a critical role in protecting against preterm labour. Our study will further our understanding of the mechanisms of preterm labour and provide new insight into the sex-specific differences in the prevalence of preterm birth.
Targeting Prevention And Treatment Of Hypertensive Cardiovascular Disease
Funder
National Health and Medical Research Council
Funding Amount
$774,540.00
Summary
Hypertension, high blood pressure, is a major global health burden. It contributes to heart disease, stroke and kidney failure, and as such is a major cause of premature death worldwide. Advances in the treatment of hypertension has meant that more people are living with disabilities associated with cardiovascular disease. Our work focuses on identifying new treatments to prevent the devastating effects of hypertension on organ function to improve quality of life in men and women.
The Effects Of Maternal Health On Fetal Kidney Development And Its Function
Funder
National Health and Medical Research Council
Funding Amount
$297,338.00
Summary
There is an epidemic of renal disease among Australian aborigines. While much of this could have been prevented by effective control of Group A streptococcal skin infections, there is also evidence that the high susceptibility to end-stage renal disease is related to poor intrauterine development of the kidney as low- birth weight is a predisposing factor. Mothers, whose renal function is impaired, tend to have babies which are low birth weight. There is no knowledge about the effects of materna ....There is an epidemic of renal disease among Australian aborigines. While much of this could have been prevented by effective control of Group A streptococcal skin infections, there is also evidence that the high susceptibility to end-stage renal disease is related to poor intrauterine development of the kidney as low- birth weight is a predisposing factor. Mothers, whose renal function is impaired, tend to have babies which are low birth weight. There is no knowledge about the effects of maternal renal dysfunction on development of the fetal kidney. We have recently developed an animal model in which we can study the effects of maternal renal dysfunction on the development of the kidney of her offspring. Human beings form 60% of the functional units (nephrons) in the kidney in the last trimester. Sheep, like human beings (and unlike rats), completely form all the nephrons that they will ever have, during intrauterine life. While the fetal kidneys play an essential role in the formation of amniotic fluid, regulation of fetal fluid and electrolyte homeostasis depends on maternal renal function via transplacental transfer. If maternal renal function is reduced, it is likely that the fetal kidneys will be exposed to a greater volume and solute load through transplacental equilibration. This may have a profund effect on renal development especially if coupled with an inadequate maternal diet and a high maternal salt intake. Under these conditions we predict that development of the fetal kidney will be impaired and renal capacity after birth, reduced. This means that the kidney will 'age' more rapidly. Thus the affected individual would be predisposed to renal disease in adult life. In our animal model we will study the effects and interactions of maternal renal insufficiency, poor fetal nutrition and a high maternal salt intake on fetal kidney development and function.Read moreRead less
Associate Professor Kate Denton is an internationally recognised cardiovascular researcher. A focus of Dr Denton’s research is to find out why women do not respond to current treatments as well as men, and how factors in pregnancy (nutrition, stress, alcohol) drive the development of cardiovascular disease in offspring. Dr Denton is also leading research to understand why a new high blood pressure treatment (blocking nerves to the kidney) is proving more effective than expected.