I am a salaried-full time Physician in Respiratory Medicine at a major teaching hospital with postgraduate training, research experience and qualifications in clinical medicine and the epidemiology of occupational and environmental lung diseases and cance
Asthma, Lung Function, Snoring And Passive Smoking In Busselton
Funder
National Health and Medical Research Council
Funding Amount
$115,110.00
Summary
Respiratory diseases such as asthma, chronic obstructive airway disease, and sleep apnoea are common in the community, and asthma is becoming more and more common. These diseases are a major cause of morbidity, lost time from work, use of health and community resources and death. Using information collected by the Busselton Health Studies between 1966 and 2000, we will investigate some new epidemiological aspects of respiratory diseases. Some of the questions we will examine are: * How much more ....Respiratory diseases such as asthma, chronic obstructive airway disease, and sleep apnoea are common in the community, and asthma is becoming more and more common. These diseases are a major cause of morbidity, lost time from work, use of health and community resources and death. Using information collected by the Busselton Health Studies between 1966 and 2000, we will investigate some new epidemiological aspects of respiratory diseases. Some of the questions we will examine are: * How much more common has asthma become in the Busselton population? Has the increase been more pronounced in some groups than in others (eg younger people)? Have other respiratory diseases also become more common? * Is decline in FEV1 over time a more useful measure of lung health than a single FEV1 measurement? How is decline in FEV1 related to age and other factors such as asthma, smoking, chronic respiratory diseases and hay fever? * Do the following put people at increased risk of sleep apnoea: overweight, recent weight gain, smoking, heavy alcohol intake, respiratory illness, cardiovascular disease and use of sedatives? * Do non-smoking spouses of smokers suffer more respiratory illness than spouses of non-smokers? We expect that results from this study will increase our understanding of the causes and progression of respiratory diseases, and may eventually point to ways of reducing the burden of these diseases in the community. Since all the information needed has already been collected in the course of earlier health surveys, this study will be particularly cost-effective.Read moreRead less
Genetic and environmental causes of asthma are poorly understood. The WATCH for asthma project will study Western Australian (WA) families in which there was a twin or higher order multiple birth (twin families) in order to measure inherited and environmental contributions to the development of asthma. All WA twin families, whose infants were born during 1990 to 1995, will be invited to become part of an existing Healthway funded, population based registry of WA Twin Child Health (the WATCH stud ....Genetic and environmental causes of asthma are poorly understood. The WATCH for asthma project will study Western Australian (WA) families in which there was a twin or higher order multiple birth (twin families) in order to measure inherited and environmental contributions to the development of asthma. All WA twin families, whose infants were born during 1990 to 1995, will be invited to become part of an existing Healthway funded, population based registry of WA Twin Child Health (the WATCH study). The WATCH study has already invited 2,751 WA twin families to participate and is the only population based twin study in Australia. Funding of this study by NH and MRC will enable the extension of this unique registry to include more specific clinical information about those families in which one or more of the twins has asthma. In addition to questionnaire data, DNA and physiological information will be collected, including a potentially important new measure of airway inflammation, exhaled nitric oxide which has yet to be studied for familial aggregation. We will use the extended WATCH dataset to undertake a comprehensive investigation of the genetic epidemiology of childhood asthma. This work offers the potential to advance our current understanding of the causes of both childhood asthma and associated traits (e.g., 'twitchy' airways). By exploring the relationships between different components of asthma, we will generate information to assist us to design better epidemiological and genetic studies of asthma. At the time of recruitment, if consent is given, blood will also be taken for DNA extraction and frozen storage. This will generate a powerful data base that can later be used for to search at a molecular level for genes potentially important in causing childhood asthma. Finally, by extending the WATCH study database we will be enhancing a research resource that could potentially be used for future studies of common complex diseases other than asthma.Read moreRead less
A Randomised Controlled Trial Investigating The Respiratory Effects Of Nitrogen Dioxide In Schoolchildren
Funder
National Health and Medical Research Council
Funding Amount
$212,189.00
Summary
Research has shown that exposures to air pollutants such as nitrogen dioxide (NO2), sulphur dioxide, ozone and respirable particulate matter less than 10 microns are associated with respiratory symptoms. Unlike the other air pollutants nitrogen dioxide is an indoor gas which occurs in higher concentrations than outdoors in households which cook or heat with gas. Recent research has demonstrated that NO2 at concentrations easily achieved indoors can increase respiratory illness, particularly in c ....Research has shown that exposures to air pollutants such as nitrogen dioxide (NO2), sulphur dioxide, ozone and respirable particulate matter less than 10 microns are associated with respiratory symptoms. Unlike the other air pollutants nitrogen dioxide is an indoor gas which occurs in higher concentrations than outdoors in households which cook or heat with gas. Recent research has demonstrated that NO2 at concentrations easily achieved indoors can increase respiratory illness, particularly in children and asthmatics. In South Australia we have the opportunity to demonstrate health effects of NO2 on children with asthma more conclusively, as a high number of schools heat their classrooms with unflued gas heaters which produce high NO2. In the proposed study, half of the primary schools with unflued gas heaters will have these heaters replaced with heaters which do not emit NO2. This process of selecting schools will be performed at random and in the school holidays, so as not to bias the children in regard to their exposure status. Additionally, only asthmatic children without gas appliances at home will be included. Asthma symptoms and lung function measurements will be collected in order to determine any differences in the health outcomes of both groups. The results of this study will be able to give conclusive information on health effects related to NO2, that will substantially contribute to the development of a recommended NO2 guideline. This is of worldwide interest.Read moreRead less
The Impact Of Outdoor Aeroallergen Exposure On Asthma Exacerbations In Children And Adolescents
Funder
National Health and Medical Research Council
Funding Amount
$473,924.00
Summary
Asthma is a chronic condition usually diagnosed in childhood and an important public health concern. We do not fully understand what triggers an asthma attack, although outdoor pollen and moulds may be important. This project will establish the relative importance of pollen and moulds in triggering asthma attacks among Australian children. It will fill gaps in our knowledge of environmental triggers of asthma. Such knowledge will improve asthma management and ultimately public health.
Risk Factors For Chronic Respiratory Diseases In Middle Age: 36-year Follow-up Of The Tasmanian Asthma Study
Funder
National Health and Medical Research Council
Funding Amount
$358,750.00
Summary
This project will improve our understanding of the causes of chronic respiratory diseases (CRDs) in adults. CRDs are clearly a major public health problem, but there are no good data on the natural history and risk factors for these diseases. Regular follow-up through childhood to adulthood is the best method to examine these factors, but such data is lacking due to difficulties in conducting long-term studies. The Tasmanian Asthma Study (TAS), based on 8,585 Tasmanians (i.e. probands) born in 1 ....This project will improve our understanding of the causes of chronic respiratory diseases (CRDs) in adults. CRDs are clearly a major public health problem, but there are no good data on the natural history and risk factors for these diseases. Regular follow-up through childhood to adulthood is the best method to examine these factors, but such data is lacking due to difficulties in conducting long-term studies. The Tasmanian Asthma Study (TAS), based on 8,585 Tasmanians (i.e. probands) born in 1961, is one of the worlds most important resources of such information. The probands, their parents (16,267) and siblings (21,044) were first investigated for respiratory problems in 1968. Subsequently, three follow-up surveys were carried out at ages 13 (1974), 20 (1981) and 31 (1992) on either the total or sub-samples of the probands. In 1992, the children and spouses of the probands were also surveyed. Information on all respiratory problems was collected in all the follow-ups, although the main focus of the TAS to date has been asthma. The probands are now reaching the age at which all CRD as a group are beginning to inflict an increasing disease burden, which will become greater in the next two decades. Hence, TAS now provides an ideal opportunity to examine the potential risk factors and natural history of and of CRDs using data collected to date and new data collected at age 43. Also, it will provide a platform for future studies to investigate the progression of CRDs in this cohort. Hence, we propose to carry out the 36 year follow-up of this cohort focusing on CRDs. This will provide important information for preventing chronic respiratory morbidity and disability in the future, which will be original and significant not only in Australia but also internationally.Read moreRead less
Epidemiology Of Middle-age BHR: A Prospective Study From Childhood To Middle Age
Funder
National Health and Medical Research Council
Funding Amount
$593,840.00
Summary
Increased airway reactivity (BHR) in middle-age increases the risk of chronic respiratory diseases (CRDs) in old age, which are recognised as a major public health problem. Knowledge on the causes of these conditions is currently limited. This project will improve our understanding of the childhood and adult causes of increased reactivity of the airways in middle-age. Such knowledge will help in identifying preventive strategies for middle age BHR and thereby CRDs in old age.