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Structural And Functional Determinants Of Spatiotemporal Periodicity In Cardiac Impulse Propagation
Funder
National Health and Medical Research Council
Funding Amount
$211,320.00
Summary
Abnormal heart rhythms (cardiac arrhythmias) are responsible for much morbidity and excess mortality in Australia. Although many abnormalities leading to an abnormal heart rhythm may be successfully treated by medications or minimally invasive operative procedures there are several important ones which are not. These include the most common significant cause of an abnormal heart rhythm, atrial fibrillation, and the arrhythmias responsible for approximately half of sudden deaths, ventricular tach ....Abnormal heart rhythms (cardiac arrhythmias) are responsible for much morbidity and excess mortality in Australia. Although many abnormalities leading to an abnormal heart rhythm may be successfully treated by medications or minimally invasive operative procedures there are several important ones which are not. These include the most common significant cause of an abnormal heart rhythm, atrial fibrillation, and the arrhythmias responsible for approximately half of sudden deaths, ventricular tachycardia and ventricular fibrillation. Atrial fibrillation is a leading cause of stroke. Sudden death is associated with aging and is an increasing problem because of the rising mean age of the population. Recent negative attention on the side effects of medications used for the treatment of cardiac arrhythmias has appropriately increased interest in curative approaches requiring no onging medications. These procedures usually rely on mapping electrical activity in the heart and interrupting abnormal electrical pathways using radiofrequency electrical current. The procedures are unsuccessful when existing techniques fail to identify the underlying mechanism responsible for the abnormal heart rhythm or when the source of the abnormal beating cannot be localised within the heart. In this project we investigate the fundamental basis for a new approach to these problems. By examining the variability of the beat rate and the variability of the beat rate at different points within the heart we may be able to identify arrhythmia mechanisms and localise arrhythmia sources. In this project we will examine in groups of cells the structures and types of electrical circuits which give rise to certain types of beat-to-beat variability in the heart. This information will be essential for the interpretation of information obtained in later human studies and the subsequent development of new curative procedures for these problems.Read moreRead less
Relaxin-3 Systems In Brain: Neurophysiology And Behaviour
Funder
National Health and Medical Research Council
Funding Amount
$287,321.00
Summary
The project aim is to better understand the function of a newly-discovered signalling molecule in the mammalian brain, know as relaxin-3. Recent research suggests that this chemical is vital for normal animal behaviour, such as arousal, stress, and learning and memory processes. This project will thoroughly characterise how this chemical modulates activity of brain regions that subserve behaviour in rats. This should reveal clinical implications of relaxin-3 in human behavioural disorders.
Drinking Patterns, Gender And Social Roles In Alcohol Problems In Victoria, In An International Comparative Context
Funder
National Health and Medical Research Council
Funding Amount
$342,239.00
Summary
The varied impacts of drinking in the family and other gendered relations are an important and understudied aspect of alcohol studies, with general social and policy implications. The proposed research will make an important contribution to developing quantitative research in this area in Australia. The project uses concepts and measures which are novel in an Australian environment, and the international comparative aspect of the project, with comparable questionnaires in a wide diversity of soc ....The varied impacts of drinking in the family and other gendered relations are an important and understudied aspect of alcohol studies, with general social and policy implications. The proposed research will make an important contribution to developing quantitative research in this area in Australia. The project uses concepts and measures which are novel in an Australian environment, and the international comparative aspect of the project, with comparable questionnaires in a wide diversity of societies, is novel and innovative for the alcohol research field in general. Measures of social problems from drinking, and particularly and family and relationship, developed in analysing the study material will be made more broadly available for use in future studies, raising the possibility that the study may serve as a first measurement point for future data-series over time.Read moreRead less
Proteases, Their Inhibitors And Receptors In Degenerative Disease
Funder
National Health and Medical Research Council
Funding Amount
$5,843,388.00
Summary
Many of the themes of this program are aimed at understanding the molecular basis of several important degenerative diseases that in particular affect the ageing population. These include osteoporosis, arthritis, periodontal disease, wasting diseases of muscle and inherited disorders such as antitrypsin deficiency. The five CI’s on this application have formed a collaborative network since 1996. Dr Whisstock is a bioinformatician and structural biologist with a research focus on the serpin super ....Many of the themes of this program are aimed at understanding the molecular basis of several important degenerative diseases that in particular affect the ageing population. These include osteoporosis, arthritis, periodontal disease, wasting diseases of muscle and inherited disorders such as antitrypsin deficiency. The five CI’s on this application have formed a collaborative network since 1996. Dr Whisstock is a bioinformatician and structural biologist with a research focus on the serpin superfamily of protease inhibitors and their protease partners. He is currently the scientific director of the Victorian Bioinformatics Consortium and an NHMRC Senior Research Fellow. Dr Bird is an NHMRC Senior Research Fellow who discovered the intracellular branch of the serpin superfamily and formulated the hypothesis that describes their function. A-Prof Mackie is a world expert in the field of musculoskeletal biology and pathology. Dr Bottomley is a Senior Logan Fellow and RD Wright Fellow whose research focuses upon how proteins misfold and lead to disease. Dr Pike is an enzymologist whose research area encompasses a wide range of bacterial and mammalian proteases involved in the pathology of human disease. Each individual in this team brings different skills which makes this a very important and powerful collaboration. The research is extensive and involves protein folding, enzyme kinetics, molecular modelling, structural biology, bioinformatics, cell biology and pathology, enzyme kinetics and drug design. Collectively the CI’s have a total of 154 papers since 1998, of which a third include two or more of the CI’s as co-authors. Currently the team holds over >$5 million in grant funding. The team is augmented by four P.I.s: Dr Buckle is a talented structural biologist; Dr Scott is a molecular cell biologist who holds an NHMRC CJ Martin Fellow; Dr Garcia de la Banda is a computer scientist based at Monash and Dr Grigoryev is a world expert in chromatin condensation based at Penn State University (USA).Read moreRead less
A Comparison Of Loaded And Unloaded Exercise For People With Non-specific Chronic Low Back Pain (NSCLBP)
Funder
National Health and Medical Research Council
Funding Amount
$42,410.00
Summary
Chronic low back pain is a common and costly condition. This research will conduct studies to determine the important ingredients of exercise programs that are related to successful outcomes for people with chronic low back pain (CLBP) and also to determine the effects of an exercise program intended to strengthen or load the low back muscles and a program that encourages movement restoration through movement not intended to strengthen for people with non-specific CLBP.