Early Retinal Vessel Changes In Diabetes And The Metabolic Syndrome
Funder
National Health and Medical Research Council
Funding Amount
$212,500.00
Summary
Diabetes mellitus affects a large proportion of adult Australians. Furthermore, many non-diabetic Australians are at high risk of developing diabetes (e.g., people with lesser glucose abnormalities, and those who are obese, have high blood pressure, or have high lipid levels). It has been suggested that diseases affecting small blood vessels (microvascular disease) in the body is closely related to the development of both diabetes and the pre-diabetes state. The current study will examine the re ....Diabetes mellitus affects a large proportion of adult Australians. Furthermore, many non-diabetic Australians are at high risk of developing diabetes (e.g., people with lesser glucose abnormalities, and those who are obese, have high blood pressure, or have high lipid levels). It has been suggested that diseases affecting small blood vessels (microvascular disease) in the body is closely related to the development of both diabetes and the pre-diabetes state. The current study will examine the relationship of microvascular disease in the retina (at the back of the eye) to diabetes, pre-diabetes status and diabetes complications. We will use a computer-imaging technique to measure the diameters of retinal blood vessel from digital photographs taken in 2,177 participants of the 1999-2000 Australian Diabetes, Obesity and Lifestyle (AusDiab) Study, a community-based survey of people aged 25 years and older examining risk factors and complications of diabetes. In the proposed study, we aim to answer the following questions: 1) Are changes in the retinal blood vessel diameter (e.g., narrowed or dilated vessels) associated with diabetes and pre-diabetes? 2) Are these retinal vessel changes related to obesity, high blood pressure and high lipid levels? 3) Are retinal vessel changes related to diabetes complications, such as heart disease, kidney disease, nerve problems and foot ulcers? 4) Do retinal vessel diameter changes predict people who will subsequently develop diabetes, irrespective of their risk factor profile? Using this well-characterized population, and existing digital retinal photographs, the proposed study will offer a unique and cost-effective opportunity to address important gaps in our understanding of how diabetes and pre-diabetes develop, and whether they are related to microvascular diseases. This may ultimately lead to new treatment and preventive approaches targeted at the small blood vessels in the body.Read moreRead less
Retinal Vascular Signs As Predictors Of Systemic Disease Outcomes: 10-year Evolution In A Population-based Cohort
Funder
National Health and Medical Research Council
Funding Amount
$389,575.00
Summary
Recent U.S. data from two population-based studies have highlighted retinal microvascular signs as being predictive of systemic vascular and other important health outcomes in middle-aged or older individuals, particularly stroke and heart attack and mortality, independent of traditional vascular risk factors. The present application proposes to evaluate the 10-year development and progression of retinal microvascular signs and their relations to the development of stroke and other important sys ....Recent U.S. data from two population-based studies have highlighted retinal microvascular signs as being predictive of systemic vascular and other important health outcomes in middle-aged or older individuals, particularly stroke and heart attack and mortality, independent of traditional vascular risk factors. The present application proposes to evaluate the 10-year development and progression of retinal microvascular signs and their relations to the development of stroke and other important systemic health outcomes in the population-based cohort of residents attending the Blue Mountains Eye Study (BMES. Two types of retinal signs will be evaluated: firstly, the presence of specific clinical signs, such as focal narrowing of small retinal vessels (arterioles), nicking of retinal veins as arterioles cross them or presence of retinopathy (haemorrhages and other signs) secondly, measures of generalized retinal vessel calibre (narrowing) using a computer-assisted method developed for the U.S. studies. We will also develop new grading methods for two other signs. Late and will compare computer-assisted grading from 35mm slides to automated grading of vessels using a scanning device (being developed) to screen the eyes of older persons. This project builds upon our current 3-year NHMRC grant (ID153948; 2001-2003) Retinal vascular signs as risk markers for incident stroke or cerebrovascular death: A population-based assessment . In the last 2 years, this has explored different aspects of measurement and grading of these signs, has documented their relation to blood pressure and has begun to assess whether these features predict vascular events and other systemic outcomes in older Australians. The new project will assess the evolution of retinal microvascular signs over a 10-year period, using data and retinal photographs from the 10-year examinations of the BMES cohort, currently being collected, in a further current NHMRC grant (ID211069; 2002-2004).Read moreRead less
Retinal Vascular Signs As Risk Markers For Incident Stroke Or Cerebrovascular Death: A Population-based Assessment
Funder
National Health and Medical Research Council
Funding Amount
$410,199.00
Summary
Stroke remains a major cause of disability and death in Australia. Preliminary data from the Blue Mountains Eye Study suggest that blood vessel changes observed in the retina at the back of the eye may provide signs of an increased risk of stroke or death from stroke. Importantly, although stroke is strongly associated with elevated blood pressure, the risk associated with these blood vessel signs seems to be independent of blood pressure. The proposed study will conduct a detailed re-grading of ....Stroke remains a major cause of disability and death in Australia. Preliminary data from the Blue Mountains Eye Study suggest that blood vessel changes observed in the retina at the back of the eye may provide signs of an increased risk of stroke or death from stroke. Importantly, although stroke is strongly associated with elevated blood pressure, the risk associated with these blood vessel signs seems to be independent of blood pressure. The proposed study will conduct a detailed re-grading of retinal photographs taken on people who attended the Eye Study during 1992-4 and 5-year follow-up exams during 1997-9. We will grade these photographs manually (using a stereo-viewer), and with computer assistance to measure changes in the diameter of small arteries in the retina and other signs. By closely matching our grading technique to that used in a large American Study, we hope to develop reliable grading for these signs and will be able to compare our findings internationally. Our aim is to assess the frequency of abnormal retinal vessel changes in people of different age groups as well as the development and progression of these signs over time. Their relationship to well known vascular risk factors like smoking, blood pressure, obesity, diabetes and cholesterol will also be investigated. We hope to be able to discriminate those changes associated with an increased stroke risk from those due to normal ageing. We expect that the increased stroke risk associated with abnormal retinal vessel changes may be greater than shown in our early data. If confirmed, then these findings may provide a more sensitive and objective measure of stroke risk than relying on traditional risk factors, which are difficult to quantify and change with time. We may be able to develop simple rules so that doctors using an ophthalmoscope or examining a retinal photograph could identify high risk patients. These people could benefit from interventions to reduce their risk.Read moreRead less
Authenticity: Globalisation and Indigenous Culture. Who speaks for the Fourth World? Why is there an obsession with 'authenticity' whenever Indigenous people are being discussed? This study explores those questions by examining a combination of sources, ranging from international museum collections to the advertising campaigns of multinational companies; from literature to the cultural festivals of the Olympic Games. The research is original, comparative, empirical. It explores the intersectio ....Authenticity: Globalisation and Indigenous Culture. Who speaks for the Fourth World? Why is there an obsession with 'authenticity' whenever Indigenous people are being discussed? This study explores those questions by examining a combination of sources, ranging from international museum collections to the advertising campaigns of multinational companies; from literature to the cultural festivals of the Olympic Games. The research is original, comparative, empirical. It explores the intersections between postcolonial and cultural studies to speak -- not for Indigenous peoples -- but to the non-Indigenous representation of First Nations. Why? Because this provides key insights into the future of race relations in western democracies.Read moreRead less
Supporting the sustainability of Australia's local news ecosystem. This project aims to understand how Australia’s main public broadcaster, the ABC, can best support public interest journalism in rural and regional communities, with a specific focus on fragile and underserved areas of the nation’s local news ecosystem. The project will develop new knowledge around media power and how news providers can work together to secure the sustainability of local news. Expected outcomes include a framewor ....Supporting the sustainability of Australia's local news ecosystem. This project aims to understand how Australia’s main public broadcaster, the ABC, can best support public interest journalism in rural and regional communities, with a specific focus on fragile and underserved areas of the nation’s local news ecosystem. The project will develop new knowledge around media power and how news providers can work together to secure the sustainability of local news. Expected outcomes include a framework to identify and define areas of news need, an assessment of existing interventions and road-tested approaches to improve information quality. The project should provide benefits by supporting forms of local journalism that ultimately enhances the demographic health and social fabric of small towns and cities.
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Amplifying Indigenous news: a digital intervention. This project aims to road-test, document and analyse an innovative strategy for amplifying Indigenous voices in news media. The project will deploy and assess the impact of a new digital application designed to enable access to a diverse range of Indigenous voices, stories and agendas. The anticipated outcomes will assist the project’s industry partners meet their strategic goals of increasing the level of Indigenous media representation in Aus ....Amplifying Indigenous news: a digital intervention. This project aims to road-test, document and analyse an innovative strategy for amplifying Indigenous voices in news media. The project will deploy and assess the impact of a new digital application designed to enable access to a diverse range of Indigenous voices, stories and agendas. The anticipated outcomes will assist the project’s industry partners meet their strategic goals of increasing the level of Indigenous media representation in Australia, and consolidate their roles as leading outlets for Indigenous content and coverage. These outcomes are also expected to improve public understanding of issues affecting Indigenous Australians and contribute to more informed and inclusive policy discussions.Read moreRead less
Toddlers and tablets: exploring the risks and benefits 0-5s face online. Children aged between zero and five are experiencing an extraordinary shift in media consumption. They intuitively swipe screens and press buttons on tablet computers and smartphones, using apps and accessing the internet. With an estimated five-fold increase in their tablet usage (2012 to 2013), there is an urgent need for research and policy development to maximise benefit and minimise risk. This project is intended to in ....Toddlers and tablets: exploring the risks and benefits 0-5s face online. Children aged between zero and five are experiencing an extraordinary shift in media consumption. They intuitively swipe screens and press buttons on tablet computers and smartphones, using apps and accessing the internet. With an estimated five-fold increase in their tablet usage (2012 to 2013), there is an urgent need for research and policy development to maximise benefit and minimise risk. This project is intended to investigate family practices and attitudes around very young children's internet use in Australia and the United Kingdom, and is expected to contribute to public debate and evidence-based policy in Australia, the United Kingdom and Ireland. It aims to develop recommendations for policy makers and offers guidelines for parents of three age groups: zero to one, two to three and four to five.Read moreRead less
Wild Man from Borneo: species, race, representation. This project addresses the representation of species boundaries in Western accounts of the orangutan in the 19th and 20th centuries. Darwinian theory raised the possibility that animals could ?evolve?. Orangutans seemed ?closest? to humans and therefore raised key questions about the border between humans and animals. These questions were addressed in a vast range of scientific, popular, imaginative and juvenile literature. Even when ecolo ....Wild Man from Borneo: species, race, representation. This project addresses the representation of species boundaries in Western accounts of the orangutan in the 19th and 20th centuries. Darwinian theory raised the possibility that animals could ?evolve?. Orangutans seemed ?closest? to humans and therefore raised key questions about the border between humans and animals. These questions were addressed in a vast range of scientific, popular, imaginative and juvenile literature. Even when ecological models of the environment shifted attention from evolutionary potential to ecological role, orangutans retained a special status as ?sentinel? species. This project will produce a monograph examining the construction, maintenance and erosion of ideas of species boundaries.Read moreRead less
The importance of the fictional character in literary theory and cultural practice. This project is a theoretical research project which aims to make significant and innovative contributions to research excellence in literature and the history of ideas. This research focuses on the fictional character, one of the central categories of literary theory. The benefits flowing from it will primarily be an enhanced understanding of the workings and the history of a category that informs every domain o ....The importance of the fictional character in literary theory and cultural practice. This project is a theoretical research project which aims to make significant and innovative contributions to research excellence in literature and the history of ideas. This research focuses on the fictional character, one of the central categories of literary theory. The benefits flowing from it will primarily be an enhanced understanding of the workings and the history of a category that informs every domain of cultural practice.Read moreRead less