Airway Epithelial Barrier Function, Asthma And Aero-allergen Sensitization.
Funder
National Health and Medical Research Council
Funding Amount
$527,886.00
Summary
There is a strong association between allergy and asthma. This association been almost universally assumed to be causative. However, recent evidence suggests an alternative explanation ie., that the abnormal epithelium in asthma allows or facilitates sensitization to airborne allergens. This project will test this alternative hypothesis using human lung tissue and an animal model.
Participate-CP: Optimising Participation In Physically Active Leisure For Children With Cerebral Palsy: A Randomised Controlled Trial
Funder
National Health and Medical Research Council
Funding Amount
$1,014,872.00
Summary
In Australia, 35,000 people have cerebral palsy, who compared to able-bodied peers, are less active with a greater risk of chronic, life-limiting health conditions. There are currently no effective interventions for children with cerebral palsy to increase their physical activity and participation in active leisure activities. We have promising data about a new intervention, called Participate-CP, which we will test in 80 children with cerebral palsy and compare results to usual therapy care.
Optimisation Of Antimicrobial Therapy For Severe Bacterial Infections In Neonates And Young Children In Papua New Guinea
Funder
National Health and Medical Research Council
Funding Amount
$943,865.00
Summary
This study aims to provide important information on the way young Papua New Guinean children with serious bacterial infections handle antibiotics, including newer agents that may be required if bacterial resistance is confirmed or increases. The data will be used to optimise treatment, thus reducing mortality and potential adverse drug effects, in PNG nad other tropical countries, and may have implications for the developed world as well.
Enhancing Clinical Management Of Paediatric Malaria In Endemic Areas With Transmission Of Multiple Plasmodium Species
Funder
National Health and Medical Research Council
Funding Amount
$867,511.00
Summary
Malaria remains a major problem for children in developing countries especially where different types of the disease are common. This set of complementary studies, based at an established research site in PNG aims to develop new treatment strategies for childhood malaria. A novel method of giving medicine via a spray under the tongue for sick children before arrival at hospital and modified dosing schedules of an old drug used for treating parasites hidden in the liver will be studied.
The Role Of Gonadotropins In Regulating The Production Of Alzheimer's Beta Amyloid
Funder
National Health and Medical Research Council
Funding Amount
$400,278.00
Summary
Currently, about 160,000 Australians suffer from dementia; of which 50-70% are Alzheimer's disease (AD) cases. AD is characterised clinically by memory and personality changes and pathologically by deposition of amyloid. Of particular importance in the disease pathogenesis, is a small molecule called beta amyloid, of which the overproduction is thought to be central to the development of AD. Changes in the levels of the reproductive hormones, particularly low levels of oestrogen during menopause ....Currently, about 160,000 Australians suffer from dementia; of which 50-70% are Alzheimer's disease (AD) cases. AD is characterised clinically by memory and personality changes and pathologically by deposition of amyloid. Of particular importance in the disease pathogenesis, is a small molecule called beta amyloid, of which the overproduction is thought to be central to the development of AD. Changes in the levels of the reproductive hormones, particularly low levels of oestrogen during menopause or testosterone during andropuase, has been associated with the increased risk of developing AD and in altering the levels of beta amyloid. Furthermore, menopause and andropause are also characterised by changes in other reproductive hormones such as the gonadotropins. High levels of the gonadotropins have also been associated with the increased risk of developing AD. Therefore it is important to identify how these changes modify the risk of developing AD. This study examines the role of the gonadotropins in regulating beta amyloid levels in cell culture and in an animal model for AD. Furthermore, this study will assess, in the animal model, the use of gonadotropin lowering agents to reduce levels of beta amyloid. The results from this study will provide important data on how reproductive hormones regulate beta amyloid. Further insight into these mechanisms will provide therapeutic or preventative strategies for AD.Read moreRead less
The critical role of kisspeptin/neurokinin/dynorphin (KNDy) neurons in gonadotropin releasing hormone (GnRH) release. The brain controls fertility through the secretion of its primary stimulatory factor, gonadotropin releasing hormone (GnRH). Brain cells producing three key peptide hormones, kisspeptin, neurokin B and dynorphin (termed KNDy cells) are vital for the control of GnRH. This project will detail the role of KNDy cells in puberty and reproduction.
Alpha-2-Macroglobulin And The Transport And Uptake Of The Hormone, Hepcidin
Funder
National Health and Medical Research Council
Funding Amount
$533,541.00
Summary
Hepcidin is a peptide hormone that is a major regulator of iron metabolism. It has been suggested that hepcidin is free in the blood. However, we recently identified that hepcidin binds with alpha-2-macroglobulin (a2-M) in the plasma and this increases the efficacy of this peptide. The demonstration that a2-M plays a role in hepcidin biology will lead to a better understanding of hepcidin physiology, the development of methods for its measurement and improved treatment of iron related diseases.
Brain Regulation of Reproduction: Challenging the ‘KNDy’ Hypothesis. The brain switches reproduction on and off by changing the frequency of pulses of gonadotrophin releasing hormone. The processes that produce the pulses have been a puzzle for decades but, recently, brain cells that produce three peptides (kisspeptin, neurokinin B, dynorphin), known as ‘KNDy cells’, have been heralded as the ‘missing link’, or even the ‘pulse generator’. Using sheep, this project will challenge the KNDy hypothe ....Brain Regulation of Reproduction: Challenging the ‘KNDy’ Hypothesis. The brain switches reproduction on and off by changing the frequency of pulses of gonadotrophin releasing hormone. The processes that produce the pulses have been a puzzle for decades but, recently, brain cells that produce three peptides (kisspeptin, neurokinin B, dynorphin), known as ‘KNDy cells’, have been heralded as the ‘missing link’, or even the ‘pulse generator’. Using sheep, this project will challenge the KNDy hypothesis with pheromones and with acute increases in nutrition, two factors that rapidly increase the frequency of gonadotrophin releasing hormone pulses. The outcomes of this research are directly relevant to the optimisation of reproductive management in farm animals, wildlife and humans.Read moreRead less
Masterminding Reproduction: Kisspeptin and RFamide-Related Peptide. There are a number of concerning trends in reproductive health. Women are reporting difficulty conceiving and maintaining pregnancies; while sperm count and quality are declining in men. More concerning is the increase in reproductive cancers. Gonadotropin-releasing hormone (GnRH) antagonist and agonist have been used for decades to treat reproductive cancers (such as breast cancer and prostate cancer), infertility and precociou ....Masterminding Reproduction: Kisspeptin and RFamide-Related Peptide. There are a number of concerning trends in reproductive health. Women are reporting difficulty conceiving and maintaining pregnancies; while sperm count and quality are declining in men. More concerning is the increase in reproductive cancers. Gonadotropin-releasing hormone (GnRH) antagonist and agonist have been used for decades to treat reproductive cancers (such as breast cancer and prostate cancer), infertility and precocious puberty. Kisspeptin and RF-related peptide may offer more physiological alternatives to GnRH, without detrimental side effects. We will fully explore these two newly defined and major players in reproduction and provide a physiological framework for their progression to clinical use.Read moreRead less
Postviral Wheezing In Childhood: Disregulation Of Airway Tone?
Funder
National Health and Medical Research Council
Funding Amount
$577,040.00
Summary
Asthma is a very common childhood condition that is becoming increasingly more common. Wheezing is common in infants and young children following viral infections and is often thought of as the first manifestation of asthma. However, many children and infants who wheeze with viral infections appear to grow out of asthma in their teenage years. Asthma that persists into adult life is usually associated with allergies to common environmental allergens, such as house dust mite and grass pollens. Ho ....Asthma is a very common childhood condition that is becoming increasingly more common. Wheezing is common in infants and young children following viral infections and is often thought of as the first manifestation of asthma. However, many children and infants who wheeze with viral infections appear to grow out of asthma in their teenage years. Asthma that persists into adult life is usually associated with allergies to common environmental allergens, such as house dust mite and grass pollens. However, many infants who wheeze with viral infections, especially in the first year of life, do not develop allergies in later life, raising the possibility that they did not have the same type of asthma as those whose symptoms persist. This project will study the effects of viral infections on lung function to determine whether particular types of virus can have detrimental effects of lung function lasting for years. We will also examine whether the age at which the infection occurs and the severity of the infection influence the long-term outcome. The project involves studying infants during the recovery phase of respiratory viral infections, older children years after documented infections and experimental animal models that have been infected under controlled conditions. By determining whether respiratory viral infections can have long-term effects on lung function that can mimic asthma, we will advance our understanding of how asthma develops. In addition, specific treatment and preventative strategies could then be developed to prevent these long-term abnormalities, instead of relying on asthma medication (especially inhaled corticosteroids) as is the current practice. Preventative strategies could include encouraging the development of specific vaccines.Read moreRead less