Dental caries (tooth decay) is initiated by demineralisation of tooth hard tissue by organic acids produced by dental plaque bacteria from dietary sugars. The disease is a major public health problem and has an estimated economic burden in Australia of over $1 billion p.a. being higher than that for any other dietary-related disease. We have discovered and patented a novel amorphous calcium fluoride phosphate that is stabilised by phosphopeptides from the bovine milk protein casein. These comple ....Dental caries (tooth decay) is initiated by demineralisation of tooth hard tissue by organic acids produced by dental plaque bacteria from dietary sugars. The disease is a major public health problem and has an estimated economic burden in Australia of over $1 billion p.a. being higher than that for any other dietary-related disease. We have discovered and patented a novel amorphous calcium fluoride phosphate that is stabilised by phosphopeptides from the bovine milk protein casein. These complexes, designated CPP-ACFP, have the potential to provide superior clinical efficacy in preventing dental caries and treating and repairing early stages of disease. The aims of this project therefore are (i) to develop topical formulations of CPP-ACFP for application to teeth to repair early stages of decay and (ii) to characterise the three-dimensional structure of the CPP-ACFP complexes. The significance of this work is that a superior and novel treatment for dental caries may be developed as well as providing insight into the structure of organically-stabilised amorphous calcium phosphate and its role in biomineralisation processes.Read moreRead less
Determination Of Diagnostic Molecular Profiles For Intraduct Lesions Of The Breast.
Funder
National Health and Medical Research Council
Funding Amount
$308,400.00
Summary
Breast cancer originates in cells within breast ducts. The introduction of Breast Screening for breast cancer has led to a dramatic increase in the diagnosis of breast cancer which is confined to these ducts and has not spread to surrounding tissue. This is known as 'ductal carcinoma in situ' or DCIS. It is evident that DCIS is variable in its tendency to give rise to more advanced breast cancer. However, currently our ability to predict the potential agressiveness of a particular DCIS is limite ....Breast cancer originates in cells within breast ducts. The introduction of Breast Screening for breast cancer has led to a dramatic increase in the diagnosis of breast cancer which is confined to these ducts and has not spread to surrounding tissue. This is known as 'ductal carcinoma in situ' or DCIS. It is evident that DCIS is variable in its tendency to give rise to more advanced breast cancer. However, currently our ability to predict the potential agressiveness of a particular DCIS is limited. In this research we are proposing to develop new methods for evaluation of DCIS that will more accurately predict clinical behaviour. An important adjunct is to ensure that these methods can be practically applied in a routine diagnostic setting. Achievement of the aims of this project will assist treatment planning for patients diagnosed with DCIS. It will also provide important information about breast cancers diagnosed as a consequence of breast screening.Read moreRead less
A New Virus Causing Acute Gastroenteritis In Humans
Funder
National Health and Medical Research Council
Funding Amount
$575,374.00
Summary
Diarrhoea is very common, especially in children but a cause is often not found. Believing there must be undiscovered viruses responsible, we developed a new method to look for them, and discovered one, which we have named adelavirus, in 17% of children with diarrhoea presenting to the WCH, Adelaide, over a 3 month period. 55% were hospitalised. This project proposes to investigate how widespread adelavirus infection is in the community and investigate how a vaccine might be developed.
Trichomonas Vaginalis: Prevalence In An Urban Indigenous Population And Validation Of New Assays
Funder
National Health and Medical Research Council
Funding Amount
$88,880.00
Summary
The infection called trichomonas is the commonest sexually transmitted infection (STI) world-wide. It is caused by a parasite and is particularly common amongst disadvantaged, poor communities. It is important to diagnose and treat (readily available treatments exist) this infection because it is linked with early birth in pregnant women and increases the spread of HIV-AIDS virus. The diagnosis has not changed for decades until recently, when a new more sensitive test became available.Wehave ada ....The infection called trichomonas is the commonest sexually transmitted infection (STI) world-wide. It is caused by a parasite and is particularly common amongst disadvantaged, poor communities. It is important to diagnose and treat (readily available treatments exist) this infection because it is linked with early birth in pregnant women and increases the spread of HIV-AIDS virus. The diagnosis has not changed for decades until recently, when a new more sensitive test became available.Wehave adapted it to work on self-collected specimens such as in-out tampons or urines. Proof that this new diagnostic tool is better, is needed in Australia in high-risk groups such as Aboriginal and Torres Strait Islander communities where other STIs have already been shown to be at high rates. How this parasite causes disease in humans is poorly studied. We plan to test this new diagnostic method and compare it to traditional tests in a high-risk population and to ultimately study how the parasite causes disease.Read moreRead less
The Safety And Effectiveness Of Hospital E-prescribing Systems: A Controlled Time Series Study
Funder
National Health and Medical Research Council
Funding Amount
$740,460.00
Summary
Prescribing errors represent a significant public health issue internationally. In the US over 770,000 people are harmed or die each year in hospitals as a result of adverse drug events. In Australia 2% of hospital patients experience harm or death due to medication errors. The risk of these errors is rising each year with the increased intensity of medical care, use of complex and potent drug regimens and the increasing age and severity of hospital patients. Electronic prescribing systems are b ....Prescribing errors represent a significant public health issue internationally. In the US over 770,000 people are harmed or die each year in hospitals as a result of adverse drug events. In Australia 2% of hospital patients experience harm or death due to medication errors. The risk of these errors is rising each year with the increased intensity of medical care, use of complex and potent drug regimens and the increasing age and severity of hospital patients. Electronic prescribing systems are believed to significantly reduce the number of errors which occur and reduce harm to patients as a result. No studies have demonstrated that these systems result in reducing prescribing errors that cause harm to patients. Alarmingly, anecdotal evidence from overseas suggests that use of electronic prescribing systems introduces new types of errors. This is consistent with a growing body of scientific research which suggests that individuals' decision-making may be significantly influenced by information generated by a computer, resulting in new types of errors. The aim of this project is to undertake a controlled time series study to assess the safety and effectiveness of two electronic prescribing systems to reduce prescribing errors in Australian hospitals. The study will compare error rates before and after the introduction of the systems. In addition, the study will be the first to focus on measuring new types of errors that may result from system use and to investigate how computer use influences clinicians' decision-making. This study will provide critical information about the effectiveness and safety of these systems which are being introduced into Australian hospitals. Unlike other medical interventions, which require stringent safety testing before use with patients, there are no minimum safety requirements for electronic prescribing systems. The data from this study is urgent in developing recommendations to ensure the safety of electronic prescribing systems for Australia.Read moreRead less
Understanding The Role Of Tec In Fcgamma Receptor Mediated Phagocytosis
Funder
National Health and Medical Research Council
Funding Amount
$211,527.00
Summary
The recognition and destruction of bacterial pathogens and other foreign particles by specific immune cells (macrophages) is principally mediated by the Fcgamma class of cell surface antibody receptors. This proposal aims to understand the molecular mechanisms which link receptor activation to the cellular rearrangements required to invaginate or swallow the offending particle. We have used immunofluorescent microscopy and biochemical methods to show that the intracellular tyrosine kinase Tec is ....The recognition and destruction of bacterial pathogens and other foreign particles by specific immune cells (macrophages) is principally mediated by the Fcgamma class of cell surface antibody receptors. This proposal aims to understand the molecular mechanisms which link receptor activation to the cellular rearrangements required to invaginate or swallow the offending particle. We have used immunofluorescent microscopy and biochemical methods to show that the intracellular tyrosine kinase Tec is an important component of the phagocytosis mechanism. Here we plan to use highly selective gene targeting methods to generate a mouse cell culture model system which is devoid of Tec protein. This will allow us to determine whether Tec is essential for Fcgamma-mediated phagocytosis. Reintroduction of mutant versions of the Tec protein into this null background will provide detailed information on the molecular partners of Tec and the individual roles of the various domains within the Tec protein. By studying the molecular mechanism of phagocytosis, we expect to gain an understanding of how to influence the Fcgamma signalling pathway, either to enhance the ability to deal with pathogens, or to restrict the consequences of excessive phagocytosis associated with autoimmune diseases. Tec is an enzyme likely to play an important role between the Fcgamma receptor and actin cytoskeleton rearrangements and therefore is a potentially important drug target.Read moreRead less
Targeting KRAS Mutations In Cancer Using A Novel SiRNA Delivery Technology
Funder
National Health and Medical Research Council
Funding Amount
$498,899.00
Summary
Mutations in a gene called KRAS are found in 20% of human cancers but are impossible to target with existing treatments. RNA interference is a promising new way to target genes previously considered undruggable, but there is no way to deliver the molecules required for RNA interference to tumours. We will evaluate the ability of a new nanotechnology based delivery system (antibody targeted minicells) to deliver RNA interference, thereby selectively targeting of KRAS in tumours while avoiding tox ....Mutations in a gene called KRAS are found in 20% of human cancers but are impossible to target with existing treatments. RNA interference is a promising new way to target genes previously considered undruggable, but there is no way to deliver the molecules required for RNA interference to tumours. We will evaluate the ability of a new nanotechnology based delivery system (antibody targeted minicells) to deliver RNA interference, thereby selectively targeting of KRAS in tumours while avoiding toxicity to normal tissue.Read moreRead less
A Comprehensive Self-Management Programme For Chronic Obstructive Pulmonary Disease In The Community
Funder
National Health and Medical Research Council
Funding Amount
$391,610.00
Summary
Chronic obstructive pulmonary disease (COPD) is the third leading cause of burden of disease in Australia. It has a major impact on sufferers, their carers and society. This study introduces a new model of community care, based on case management, mentoring to improve self-efficacy and information systems to deliver information and closely monitor disease status. This will improve the quality of life of sufferers, develop healthcare networks and decrease healthcare utilisation.