Hypoxia-induced Suppression Of Respiratory Sensations And Reflexes
Funder
National Health and Medical Research Council
Funding Amount
$276,750.00
Summary
Many diseases that effect the respiratory system have their primary effect on the lungs and airway themselves but in some conditions, such as obstructive sleep apnea (OSA) and asthma, increased breathing load can induce periods of low blood oxygen which could further contribute to morbidity in these diseases. OSA is a disorder associated with snoring. Patients experience periods of sleep fragmentation and oxygen deprivation due to obstruction of the floppy portion of the upper airway (pharynx) d ....Many diseases that effect the respiratory system have their primary effect on the lungs and airway themselves but in some conditions, such as obstructive sleep apnea (OSA) and asthma, increased breathing load can induce periods of low blood oxygen which could further contribute to morbidity in these diseases. OSA is a disorder associated with snoring. Patients experience periods of sleep fragmentation and oxygen deprivation due to obstruction of the floppy portion of the upper airway (pharynx) during sleep. It affects 4% of men and 2% of women and causes excessive daytime sleepiness leading to increased risk of accidents, high blood pressure and premature cardiovascular disease. Asthma produces airway inflamation and narrowing and affects a wide range of people. Both OSA and asthma are associated with episodes of impaired breathing and reduced levels of oxygen in the blood. Low levels of oxygen in the blood (hypoxia) is well known to impair functioning of the central nervous system. We have recently found that hypoxia blunts sensations of increased breathing load in healthy people and in asthmatics. Hypoxia might therefore contribute to worsening of attacks in these diseases. This study aims to investigate how changes in blood oxygen levels affect brain processing of respiratory signals, how this translates to perception of sensations and the physiological adaptations that people make to cope with increased breathing load. We will also investigate whether the inhibitory effects of hypoxia on central nervous system function extend to other vital protective respiratory reflexes such as cough, awakening from sleep to increased breathing load and upper airway reflexes that are important for maintaining an open airway.Read moreRead less
Innovation In The Synthesis And Translation Of Research Evidence To Inform The Prevention, Management And Treatment Of Chronic Disease In Indigenous Populations
Funder
National Health and Medical Research Council
Funding Amount
$2,642,121.00
Summary
Chronic disease remains the principal cause of health inequality for Indigenous Australians. Primary care is critical to mounting a health system response. The Aboriginal community controlled sector is at the coal face of chronic disease management, yet requires the synthesis, utilisation, development, evaluation and translation of evidence to practice. CREATE was established for this purpose
Role Of Zinc In The Respiratory Epithelium And Asthma
Funder
National Health and Medical Research Council
Funding Amount
$224,250.00
Summary
This project will use a panel of Zinquin-derived Zn fluorophores developed in our laboratory, as well as probes for the mammalian family of vesicular ZnT transporters, to carry out a study of the normal physiology of Zn in the respiratory system and potential abnormalities of this in patients with chronic inflammatory respiratory disease (asthma, COPD, chronic smoking). Chronic inflammatory diseases of the respiratory tract affect a significant proportion of the Australian community. For example ....This project will use a panel of Zinquin-derived Zn fluorophores developed in our laboratory, as well as probes for the mammalian family of vesicular ZnT transporters, to carry out a study of the normal physiology of Zn in the respiratory system and potential abnormalities of this in patients with chronic inflammatory respiratory disease (asthma, COPD, chronic smoking). Chronic inflammatory diseases of the respiratory tract affect a significant proportion of the Australian community. For example, asthma affects 12% of adults and amongst these, 15% waken weekly or more often with their asthma while 6% are hospitalized annually. There is a need to understand the basic mechanisms underlying these diseases so that new strategies can be developed to modify bronchocondtriction and inflammation. The project will provide new knowledge concerning the physiology of Zn in the respiratory epithelium and interactions between Zn deficiency and oxidants on injury in the respiratory tract. The usefulness of easily accessible nasal epithelial cells as a measure of Zn and Zn transporter levels deeper in the respiratory tract will be assessed. The project encompasses a number of fields and utilizes in vitro cellular and animal models, as well as tissues from human subjects.Read moreRead less
Exploiting Increased Autophagy In Bronchial Epithelial Cells: A New Therapeutic Approach For Chronic Obstructive Pulmonary Disease (COPD)
Funder
National Health and Medical Research Council
Funding Amount
$724,161.00
Summary
COPD is incurable, a leading cause of death, and new therapies are urgently needed. Autophagy is a cell response to cell stress conditions, however increased autophagy is harmful. We will investigate the association of increased autophagy with COPD and smoking and evaluate therapies that can reduce autophagy, including zinc-related drugs and novel antibiotics that have been modified to lose their anti-bacterial activity.
Airway Epithelial IAPs And Their Interaction With Zn Ions
Funder
National Health and Medical Research Council
Funding Amount
$260,779.00
Summary
The air we breathe contains a variety of harmful substances. Damage to the lining involves death of the ciliated cells that line the airways. We have shown that zinc protects these cells from premature death. This application focuses on a family of proteins called IAPs which bind zinc and regulate cell death in other tissues. This project focusses on how the IAPs and Zn may act together to mainitain healthy airways and how abnormalities of these may occur in people with asthma.
Centre Of Clinical Research Excellence In Aboriginal Health
Funder
National Health and Medical Research Council
Funding Amount
$1,899,510.00
Summary
The Centre's mission is to improve Aboriginal health. It will conduct Aboriginal community-controlled population health and outcome-oriented research on strategies and systems that support individuals and communities to prevent and manage chronic diseases. The Centre will provide a range of research and other training opportunities for Aboriginal people, building the capacity of Aboriginal communities to direct and conduct their own health research independently. The Centre will be led by the Ab ....The Centre's mission is to improve Aboriginal health. It will conduct Aboriginal community-controlled population health and outcome-oriented research on strategies and systems that support individuals and communities to prevent and manage chronic diseases. The Centre will provide a range of research and other training opportunities for Aboriginal people, building the capacity of Aboriginal communities to direct and conduct their own health research independently. The Centre will be led by the Aboriginal Health Council of South Australia in partnership with Flinders University.Read moreRead less
Common synaptic inputs to human upper airway muscles. Changes in the activity of upper airway muscles at sleep onset contribute to the development of Obstructive Sleep Apnoea. The aim of this project is to investigate how the brain controls upper airway muscles during wakefulness and sleep and to identify the pathological processes that lead to the development of Obstructive Sleep Apnoea.
I am a molecular virologist researching the host response to hepatitis C virus (HCV) infection with the aim of understanding how the liver clears HCV infection. An understanding of this process will hopefully lead to novel antiviral strategies to combat not only HCV but a broad range of other viral infections.
Which Heart Failure Intervention Is Most Cost Effective In Reducing Hospital Care (WHICH? II) Trial: A Multicentre, Randomised Trial Of Standard Versus Intensified Management Of Metropolitan And Regional-dwelling Patients With Heart Failure
Funder
National Health and Medical Research Council
Funding Amount
$1,891,210.00
Summary
Chronic heart failure (CHF) management programs are now the gold-standard to cost-effectively care for thousands of Australians hospitalised with CHF each year. We’ve shown that home-based management is most cost-effective in reducing hospital stay in CHF. The Which Intervention is most Cost-effective in reducing Hospital care (WHICH? II) Trial, a multicentre, randomised study, will determine if more intensive care (via home visits and remote care contacts) further improves poor outcomes in CHF.
Which Heart Failure Intervention Is Most Cost-effective And Consumer Friendly In Reducing Hospital Care: The Which
Funder
National Health and Medical Research Council
Funding Amount
$921,640.00
Summary
Chronic heart failure (CHF) is a costly, debilitating and deadly condition that has reached near epidemic proportions in Australia. In the absence of a permanent cure for CHF, the number of people affected by CHF has risen beyond 350,000 and is expected to increase by 20-30% in the next 20 years. We recently reviewed the benefits of applying nurse-led, CHF management programs (CHF-MPs) to typically old and fragile patients, in whom recurrent hospital admissions and a premature death are common. ....Chronic heart failure (CHF) is a costly, debilitating and deadly condition that has reached near epidemic proportions in Australia. In the absence of a permanent cure for CHF, the number of people affected by CHF has risen beyond 350,000 and is expected to increase by 20-30% in the next 20 years. We recently reviewed the benefits of applying nurse-led, CHF management programs (CHF-MPs) to typically old and fragile patients, in whom recurrent hospital admissions and a premature death are common. We confirmed the results of pioneering Australian research that CHF-MPs dramatically improve health outcomes in CHF. CHF-MPs now form part of the recommended gold-standard management of CHF. However, we also have evidence that only a small proportion of patients are exposed to a CHF-MP in Australia. Residual issues such as consumer preference and the cost of applying these programs are hindering their wide-spread application. The WHICH? Study addresses this _road block� to implementing a potentially valuable health care service by tackling a number of critical issues: which form of CHF-MP (home or specialist clinic-based follow-up), will produce the best health outcomes, save the most money and meet the needs of consumers at the same time? To answer this question, we will undertake a randomised, head-to-head study of a home versus clinic-based CHF-MP, in 1000 recently hospitalised CHF patients recruited from SA, VIC, NSW and QLD. Patterns and of health care and consumer preferences and quality of life will then be compared for these two different forms of CHF-MP from a combined health economic, health policy and consumer perspective to determine the best form of CHF-MP to be applied. A _consensus� vision for applying an Australia-wide service will then be developed. The potential impact of the results of the study will then be modelled on the status of Australian CHF-MPs in the year 2010 and a blue-print for action devised.Read moreRead less