Cytorefractometry - a new technique for refractive index tomography of living cells. An ultrahigh-resolution bifocal optical coherence refractometry is proposed, and will result to micron-scale-resolution refractive index tomography of living cells, termed cytorefractometry. This technique represents an extension from bifocal optical coherence refractometry that has recently shown a remarkable promise for direct, several-frames-per-second, motion-artifact-free determination of refractive index ....Cytorefractometry - a new technique for refractive index tomography of living cells. An ultrahigh-resolution bifocal optical coherence refractometry is proposed, and will result to micron-scale-resolution refractive index tomography of living cells, termed cytorefractometry. This technique represents an extension from bifocal optical coherence refractometry that has recently shown a remarkable promise for direct, several-frames-per-second, motion-artifact-free determination of refractive index in turbid media, including biological tissue in vivo. We propose to apply our novel technique to study tissue calcification, a serious problem in cardiology, by making use of the refractive index contrast mechanism. Calcification of smooth muscle cells and aorta subdermal implant models will be studied aiming for prevention of calcification-associated pathologies.Read moreRead less
Binary regression with additive predictors: new statistical theory with healthcare applications. This project will develop new statistical analysis techniques for predicting whether someone is at risk of adverse health outcomes. The project will then apply the new techniques to a large database on heart attacks, leading to new insights into how patient characteristics and treatments affect the chance of dying from a heart attack.
Microwave Differential Imaging of Myocardium for Assessment and Therapeutic Monitoring of Transcatheter Cardiac Ablation. We propose to develop Microwave Imaging techniques for cardiovascular disease diagnosis at 2.45 GHz. Firstly, we aim to image the contrast in the complex dielectric constants of healthy and ischaemic heart tissue. The second aim is to image the extent and efficacy of therapeutic lesion formation due to cardiac ablation modalities. We propose to develop a cylindrical antenna ....Microwave Differential Imaging of Myocardium for Assessment and Therapeutic Monitoring of Transcatheter Cardiac Ablation. We propose to develop Microwave Imaging techniques for cardiovascular disease diagnosis at 2.45 GHz. Firstly, we aim to image the contrast in the complex dielectric constants of healthy and ischaemic heart tissue. The second aim is to image the extent and efficacy of therapeutic lesion formation due to cardiac ablation modalities. We propose to develop a cylindrical antenna array for near field microwave imaging using novel wire antenna elements. Fast and iterative reconstruction algorithms based on electromagnetic scattering and computational techniques will also be developed.Read moreRead less
Effect of modification of structural and cellular properties of the arterial wall on functional stiffness of large arteries. The Australian population is ageing, becoming more obese and showing earlier onset of age-related conditions such as high blood pressure, heart failure and inflammatory disorders. All these conditions are associated with possible increase arterial stiffness. Inflammatory disorders in Australia affect one in six people, increasing to one in five in the next decade. An equa ....Effect of modification of structural and cellular properties of the arterial wall on functional stiffness of large arteries. The Australian population is ageing, becoming more obese and showing earlier onset of age-related conditions such as high blood pressure, heart failure and inflammatory disorders. All these conditions are associated with possible increase arterial stiffness. Inflammatory disorders in Australia affect one in six people, increasing to one in five in the next decade. An equal proportion is affected by cardiovascular disease. This combined effect poses a massive burden on the national health budget. This project aims to investigate basic mechanism leading to degeneration of function of larger arteries and therapies to reverse the process and reduce cardiovascular risk in the community.Read moreRead less
Functional drug-releasing polymer nano-composites for preventing medical device infection and encrustation. By developing new methodologies for producing functional biomaterials, this research will benefit Australia by continuing our high profile in this research field and by producing economic benefits arising from development and export of materials technologies to the major user groups in USA and Europe. With our demonstrated linkages with Australian based biomaterials developers at CSIRO an ....Functional drug-releasing polymer nano-composites for preventing medical device infection and encrustation. By developing new methodologies for producing functional biomaterials, this research will benefit Australia by continuing our high profile in this research field and by producing economic benefits arising from development and export of materials technologies to the major user groups in USA and Europe. With our demonstrated linkages with Australian based biomaterials developers at CSIRO and University of Queensland, as well as with companies involved in the commercialisation of polyurethane based medical devices (Aortech P/L), this group is well placed to continue the research at a more applied level once the early basic stage is complete.Read moreRead less
Biophysical characterization of protein interactions within a transcription factor network. Gene expression is regulated in part by interactions between pairs and groups of proteins known as transcription factors and co-regulators. These proteins assemble into complexes at gene promoters and enhancers and thereby control the expression of that gene. Little is known at the molecular level of how these complexes form and how different interactions cooperate or compete with each other. In this prop ....Biophysical characterization of protein interactions within a transcription factor network. Gene expression is regulated in part by interactions between pairs and groups of proteins known as transcription factors and co-regulators. These proteins assemble into complexes at gene promoters and enhancers and thereby control the expression of that gene. Little is known at the molecular level of how these complexes form and how different interactions cooperate or compete with each other. In this proposal we aim to define a complex between two transcriptional regulators (HOP and SRF) involved in cardiac development and to begin to define other interactions that make up a transcriptional network essential for development of a normal heart.Read moreRead less
Control of transcription by the cardiac homeodomain protein Nkx2-5. The transcriptional regulatory protein Nkx2-5, a member of the homeodomain superfamily, is essential for heart development and mutations in the human gene cause congenital heart disease. We seek to define the molecular mechanisms that regulate the transcriptional activity of Nkx2-5. We have previously identified a transcriptional activation domain in the C-terminal region that is bipartite in nature and conserved among Nkx2-5 ....Control of transcription by the cardiac homeodomain protein Nkx2-5. The transcriptional regulatory protein Nkx2-5, a member of the homeodomain superfamily, is essential for heart development and mutations in the human gene cause congenital heart disease. We seek to define the molecular mechanisms that regulate the transcriptional activity of Nkx2-5. We have previously identified a transcriptional activation domain in the C-terminal region that is bipartite in nature and conserved among Nkx2-5 proteins from diverse species. We will characterise the consequences of mutations in this domain in mouse models and search for interacting proteins. Results will advance our understanding of gene regulation in the context of heart disease.Read moreRead less
Nonlinear Time Series Analysis in Cardiac Physiology. We will develop innovative mathematically-based diagnostics with potentially significant savings in mortality and quality of life for affected individuals and health care costs to the community.
Cardiac diseases kill more Australians than any other disease group. According to the National Heart Foundation the prevalence to heart conditions increased by 18% over the last decade.
Medical practitioners are in need of reliable diagnostic too ....Nonlinear Time Series Analysis in Cardiac Physiology. We will develop innovative mathematically-based diagnostics with potentially significant savings in mortality and quality of life for affected individuals and health care costs to the community.
Cardiac diseases kill more Australians than any other disease group. According to the National Heart Foundation the prevalence to heart conditions increased by 18% over the last decade.
Medical practitioners are in need of reliable diagnostic tools to decide whether a person in front of them is at high risk from developing sudden cardiac death, and whether they should be fitted with an implant that could save their life.Read moreRead less
The development of particle-depleted regions in dense suspensions of neutrally buoyant particles. We aim to measure the spatial variation of fluid speed and particle speed, and of particle concentration, across and along a pipe into which has been introduced a mixture of said particles and fluid. This problem has significance in mechanical and chemical engineering wherever particle/fluid mixtures are flowing. The expected outcomes are recognition of a major contribution to world research, as w ....The development of particle-depleted regions in dense suspensions of neutrally buoyant particles. We aim to measure the spatial variation of fluid speed and particle speed, and of particle concentration, across and along a pipe into which has been introduced a mixture of said particles and fluid. This problem has significance in mechanical and chemical engineering wherever particle/fluid mixtures are flowing. The expected outcomes are recognition of a major contribution to world research, as well as technological applications; one that motivates us is the blood shear in the bearings of a revolutionary Australian blood pump for cardiac assist that avoids both pivots and magnetic suspension for the single moving part.Read moreRead less
Can eco-evolutionary theories explain outcomes of microbiome coalescence . Environmental microbial communities are among the most abundant and diverse natural communities, responsible for many ecologically and economically important ecosystem functions, including primary productivity and climate regulation. This project aims to identify the biotic and abiotic factors that regulate community and functional outcomes of microbiome coalescence (the mixing of two different communities) caused by natu ....Can eco-evolutionary theories explain outcomes of microbiome coalescence . Environmental microbial communities are among the most abundant and diverse natural communities, responsible for many ecologically and economically important ecosystem functions, including primary productivity and climate regulation. This project aims to identify the biotic and abiotic factors that regulate community and functional outcomes of microbiome coalescence (the mixing of two different communities) caused by natural and anthropogenic activities. The outcomes will provide a unifying ecological framework to predict variation in microbiomes across different scales, ecosystem types and disturbances, and will generate critical knowledge for the development of effective microbiome products, a rapidly growing industryRead moreRead less