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Genetic And Environmental Factors And Early Lung Problems Can Be Related To Allergy And Poor Lung Development In Preschool Age Children
Funder
National Health and Medical Research Council
Funding Amount
$122,032.00
Summary
This important new collaboration between the Murdoch ChildrenÍs Research Institute and Barwon Health explores the impact of early lung development on longer term respiratory health. It utilises a newly validated, accurate and safe technique to measure lung function in young babies and children. Data on environmental factors and lung function will help us explore the risk factors for the development of allergy, asthma and lung infections in early life.
Targeting Cystic Fibrosis Using A Novel Inhalation Therapy
Funder
National Health and Medical Research Council
Funding Amount
$421,545.00
Summary
Currently treatments for cystic fibrosis infection are via oral, intravenous or lengthy inhalation processes. This can lead to significant side effects, consequent poor patient compliance, and limited therapeutic efficacy. We will develop and test a novel high-dose inhalation dry power device containing an antibiotics for the rapid treatment of infection in cystic fibrosis therapy.
First-in-human Evaluation Of A Novel Immunobiotic To Prevent Respiratory Infection
Funder
National Health and Medical Research Council
Funding Amount
$1,180,080.00
Summary
Respiratory infections are a leading cause of death and illness throughout the world. We have discovered a 'friendly' bacteria that can be applied up the nose to prevent ear infections and the 'flu in mice. We will now test this novel therapy in humans to check it is safe and that it stimulates the human immune system in the same way that it does in mice. This will provide essential information to conduct clinical trials, with the aim to produce a medicine that prevents respiratory infections.
Clinical Impact Of Clonal Pseudomonas Aeruginosa In Cystic Fibrosis
Funder
National Health and Medical Research Council
Funding Amount
$547,238.00
Summary
In patients with cystic fibrosis (CF), the normal defence mechanisms are compromised by an inherent genetic fault which results in an extremely sticky and dehydrated mucus. The respiratory system is unable to eradicate microbes (infection) from the lungs of patients with CF which begin to multiply and cause infection and inflammation. Recurring infections are treated with multiple courses of antibiotics and frequent hospitalisation and eventually result in premature death. This study focuses on ....In patients with cystic fibrosis (CF), the normal defence mechanisms are compromised by an inherent genetic fault which results in an extremely sticky and dehydrated mucus. The respiratory system is unable to eradicate microbes (infection) from the lungs of patients with CF which begin to multiply and cause infection and inflammation. Recurring infections are treated with multiple courses of antibiotics and frequent hospitalisation and eventually result in premature death. This study focuses on the major bacterial problem, Pseudomonas aeruginosa. Several studies from Australia and the UK, including our own have shown that about 30% to 45% of patients share the same strain of Pseudomonas aeruginosa within a centre. We know that two dominant strains of Pseudomonas aeruginosa are found in CF centres on the eastern board of Australia. This is unexpected as this bacterium is usually acquired from the environment. The emergence of these clonal strains is causing increasing anxiety in the CF community. This study is designed to provide vitally needed information on the clinical implications of being infected by an clonal strain of Pseudomonas aeruginosa and the risk factors for the acquisition of an clonal strain. This new information will provide a rationale basis for the need for changes to infection control policies (including patient segregation), better outcome predictors for patients infected with clonal strain of Pseudomonas aeruginosa.Read moreRead less
Immunity To Colonising Bacteria Of The Respiratory Tract In Atopic And Non-atopic Children
Funder
National Health and Medical Research Council
Funding Amount
$246,478.00
Summary
Evidence that seemingly harmless and common bacterial infections have a role, in the development of allergic disease has been uncovered. The development of immune responses to these microbes will be studied in children with and without allergy to inhalant allergens.
Mechanism/s Of Disease Caused By Respiratory Viral Infections
Funder
National Health and Medical Research Council
Funding Amount
$479,517.00
Summary
A newly discovered respiratory virus, human metapneumovirus (HMPV), causes clinical disease that is very similar to human respiratory syncytial virus (RSV) and co-circulates with RSV. Human RSV is a major cause of morbidity and life-threatening respiratory tract disease in infants and young children worldwide, and is recognised as an important respiratory pathogen in elderly adults and immune compromised patients. The recent isolation of HMPV from children hospitalised with respiratory tract ill ....A newly discovered respiratory virus, human metapneumovirus (HMPV), causes clinical disease that is very similar to human respiratory syncytial virus (RSV) and co-circulates with RSV. Human RSV is a major cause of morbidity and life-threatening respiratory tract disease in infants and young children worldwide, and is recognised as an important respiratory pathogen in elderly adults and immune compromised patients. The recent isolation of HMPV from children hospitalised with respiratory tract illness similar to RSV, but with an unknown etiology, suggests that HMPV may mediate similar clinical pathology. Nothing is currently known about the immune response to HMPV, or the association of these responses with lung disease. The objectives of this proposal are to elucidate the mechanisms of immunity and disease pathogenesis associated with human metapneumovirus (HMPV) and to investigate the use of a novel vaccine to protect against HMPV infection. Once this data is obtained, the study will provide the foundation for further research in the development of vaccines or therapeutic protocols to treat HMPV. It will also provide valuable information for understanding the disease in humans. Also,it is likely that HMPV, like hRSV, may prove to be an agent associated with long-term decreased pulmonary function and airflow limitation perhaps developing to asthma.Read moreRead less
Burden Of Respiratory Infection In The First 2 Years Of Life: A Birth Cohort Study Of Emerging Respiratory Pathogens.
Funder
National Health and Medical Research Council
Funding Amount
$1,168,963.00
Summary
Respiratory illnesses are extremely common, but there is little information about patterns of infection in the community using modern diagnostic tests. Children have the highest rates of infection and transmit to all other age groups. We intend to recruit 138 newborns to monitor respiratory symptoms and collect specimens for testing in the first two years of life. This will allow us to document illnesses due to known and newly identified respiratory pathogens.
In the asthmatic lung structural changes or remodelling occur, which are thought to contribute to the abnormal functioning of the airways. These remodelling events which occur in the asthmatic airway include increased deposition of proteins which form the scaffolding of the airways (the extracellular matrix ECM proteins), and an increased mass of bronchial smooth muscle cells. Many of these critical structural changes are not reversed or prevented with current asthma therapy. Remodelling is an i ....In the asthmatic lung structural changes or remodelling occur, which are thought to contribute to the abnormal functioning of the airways. These remodelling events which occur in the asthmatic airway include increased deposition of proteins which form the scaffolding of the airways (the extracellular matrix ECM proteins), and an increased mass of bronchial smooth muscle cells. Many of these critical structural changes are not reversed or prevented with current asthma therapy. Remodelling is an important process in both the development and progression of asthma. The reason why remodelling occurs in the lungs of people with asthma is not known. It is thought that persistent inflammation drives the remodelling process; however remodelling can perpetuate inflammation, thereby creating a cyclic series of events. Furthermore we have shown that cells from non-asthmatic volunteers which are grown on asthmatic ECM change to become more like cells from asthmatic subjects. Viruses which infect the lungs may play a role in the development of asthma, and in the increased remodelling which is observed. Many common respiratory viruses are capable of infecting lung cells, eg epithelial cells, which evokes an inflammatory response. I will investigate if viral infection can alter the remodelling process, using lung cells isolated from asthmatic and non-asthmatic volunteers. Furthermore, I will assess if current and novel treatments are effective in reducing the remodelling process. We have preliminary evidence that infection of lung epithelial cells with rhinovirus (the common cold virus) alters the amount of ECM deposited by these cells. I hypothesise that this process will be increased in cells from volunteers with asthma compared to non-asthma. As current therapeutics are unlikely to be able to reverse these remodelling events these experiments will enable the development of new therapeutics which can target this important aspect of airway disease.Read moreRead less
Immune Recognition Of Upper Airway Microbiota In Early Life As A Determinant Of Respiratory Health In Children
Funder
National Health and Medical Research Council
Funding Amount
$1,135,837.00
Summary
The study will investigate the impact of respiratory infections during infancy on lung & immune function & respiratory health between 3-7 years of age. Children were previously enrolled in a population based birth cohort study (ORChID study) which collected detailed information about the respiratory health during the first 2 years of life with daily respiratory diary & weekly nasal swab collection. In this study lung function & immune function will be assessed annually in the same children (3-7)
Identifying The Microbiological Risk Factors For Acute Lower Respiratory Infection In Indigenous Children To Inform Future Intervention Strategies
Funder
National Health and Medical Research Council
Funding Amount
$495,745.00
Summary
Lung infections such as pneumonia are common in Indigenous children, and can lead to repeated hospitalisation and permanent lung damage. They are also an important cause of preventable death in children. This study will look at the role of bacteria and viruses in lung infections, and will inform interventions to reduce the burden and consequences of lung infections in Indigenous children.