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A Functional And Structural Approach To Understanding Leptospiral Host-pathogen Interactions
Funder
National Health and Medical Research Council
Funding Amount
$504,097.00
Summary
Leptospirosis is a zoonosis of worldwide distribution caused by infection with pathogenic Leptospira. Infection occurs due to contact with water contaminated by urine of domestic animals. It occurs infrequently in Australia, but recent local surveillance data indicate hospitalisation rate of 56% with an average duration of 5.3 days. Through the combined approach of structural biology and functional microbiology we hope to understand how leptospira interacts with the human host.
Early Diagnosis And Prognosis Of Severe Dengue In Vietnamese Children
Funder
National Health and Medical Research Council
Funding Amount
$689,323.00
Summary
Dengue is a mosquito-borne viral infection. Tropical Australia has experienced multiple outbreaks of dengue in the last decade. This project, conducted in Ho Chi Minh City, Viet Nam, will define the accuracy of a rapid diagnostic test for the early diagnosis of severe dengue. In doing so, we will also derive an algorithm using simple laboratory and clinical findings that can help identify those patients at greatest risk of severe complications, with benefits for both patients and hospitals.
Diversity And Virulence Determinants Among 1000 Clinical And Environmental Isolates Of Burkholderia Pseudomallei
Funder
National Health and Medical Research Council
Funding Amount
$517,639.00
Summary
Melioidosis is an important infection in tropical northern Australia. It is a common cause of fatal pneumonia and blood infection in the region. Melioidosis results from infection with a soil bacterium. This project builds on the existing melioidosis collaboration between researchers in northern Australia and overseas to determine how the melioidosis bacterium can be so virulent and whether only a subset of the melioidosis bacteria found in the environment are capable of infecting humans.
Hepatitis C affects between 1-3% of Australians. Currently, there is no effective vaccine and only 30% will spontaneously clear infection, while the remained develop a chronic disease with a small risk of progression to liver cirrhosis and liver cancer over time. This study aims to evaluate the safety and efficacy of a two different treatment regimens among individuals with recent Hepatitis C infection; and define the risk factors and natural history of Hepatitis C superinfection during treatmen ....Hepatitis C affects between 1-3% of Australians. Currently, there is no effective vaccine and only 30% will spontaneously clear infection, while the remained develop a chronic disease with a small risk of progression to liver cirrhosis and liver cancer over time. This study aims to evaluate the safety and efficacy of a two different treatment regimens among individuals with recent Hepatitis C infection; and define the risk factors and natural history of Hepatitis C superinfection during treatment.Read moreRead less
Continuation Of The Darwin Prospective Melioidosis Study
Funder
National Health and Medical Research Council
Funding Amount
$567,976.00
Summary
Melioidosis is an important infection in northern Australia. It is a common cause of fatal pneumonia and blood infection in the region. This project builds on the existing melioidosis collaboration between researchers in northern Australia and overseas. The aim is to use new DNA fingerprinting methods developed specifically for the melioidosis bacteria to understand better why melioidosis can be such a severe disease and how it spreads from the environment to humans and animals and also how it h ....Melioidosis is an important infection in northern Australia. It is a common cause of fatal pneumonia and blood infection in the region. This project builds on the existing melioidosis collaboration between researchers in northern Australia and overseas. The aim is to use new DNA fingerprinting methods developed specifically for the melioidosis bacteria to understand better why melioidosis can be such a severe disease and how it spreads from the environment to humans and animals and also how it has possibly spread within Australia and overseas. Our studies in the Darwin rural region have found an alarmingly high rate of contamination of bore water with the melioidosis bacteria. We need to evaluate further the magnitude and public health implications of this contamination. Better recognition and treatment of melioidosis has resulted in a halving of the death rate from this disease in northern Australia (mortality decreased from 40%-15%). This study also aims to develop and test a new DNA detection system for rapid diagnosis of melioidosis. This will enable even earlier intervention with treatment specific for melioidosis which will hopefully decrease the mortality further.Read moreRead less
Molecular Epidemiology Of Melioidosis In Australia
Funder
National Health and Medical Research Council
Funding Amount
$357,875.00
Summary
Melioidosis is an important infection in northern Australia. It is a common cause of fatal pneumonia and blood infection in the region. Two outbreaks of melioidosis with fatalities occurring in remote Aboriginal communities have been linked to contamination of the community water supply with the melioidosis bacteria, Burkholderia pseudomallei. In addition, a rare form of melioidosis affecting the brain and spinal cord has resulted in a number of deaths in healthy Aboriginal people and also a num ....Melioidosis is an important infection in northern Australia. It is a common cause of fatal pneumonia and blood infection in the region. Two outbreaks of melioidosis with fatalities occurring in remote Aboriginal communities have been linked to contamination of the community water supply with the melioidosis bacteria, Burkholderia pseudomallei. In addition, a rare form of melioidosis affecting the brain and spinal cord has resulted in a number of deaths in healthy Aboriginal people and also a number left living in remote communities with severe disabilities such as complete paralysis of both legs. Melioidosis has also been identified in two outbreaks occurring over many years in separate locations in southern Australia. It is thought that it may have been introduced to these regions by imported animals, eg via cattle drives, and human fatalities have occurred after local flooding in these temperate locations. This project is built on the ongoing melioidosis collaboration between researchers in Western Australia, the Northern Territory and Queensland. The aim is to use new DNA fingerprinting methods developed specifically for the melioidosis bacteria to understand better why melioidosis can be such a severe disease and how it spreads from the environment to humans and animals and also how it has possibly spread within Australia and overseas. Better recognition and treatment of melioidosis has resulted in a halving of the death rate from this disease in northern Australia (mortality decreased from 40%-18%). This study aims to give us a better understanding of how this soil and water bacteria interacts with humans to cause such severe disease and will hopefully result in new primary preventative measures to complement the improved diagnosis and treatment.Read moreRead less
Modulation Of Leishmaniasis By The Proinflammatory Cytokines TNF
Funder
National Health and Medical Research Council
Funding Amount
$288,911.00
Summary
We have established a mouse model that has been genetically modified and cannot produce the cytokine tumour necrosis factor. This cytokine is secreted in the beginning of the inflammatory response. If these mice are infected with a parasite they are not able to heal the infection and die quickly. We can demonstrate that these mice cannot regulate the beginning inflammatory response and do not form a cellular infiltrate at the site of infection.
A Detailed Asssessment Of Severe Malaria And Severe Non Malarial Illness In Papua New Guinean Children.
Funder
National Health and Medical Research Council
Funding Amount
$39,171.00
Summary
PNG has the highest infant and childhood mortality in the Pacific with malaria accounting for 15% of infant mortality. Diagnosing and investigating malaria in this setting is hard because the symptoms are similar to other diseases. We aim to accurately describe clinical and laboratory features and risk factors for malaria, severe non malarial disease and mortality. We are investigating an outbreak of unexplained encephalitis as well.
Urinary tract infections (UTI) are among the most common infectious diseases of humans and a major cause of morbidity and mortality. In the USA, UTI accounts for >$1.6 billion in medical expenses each year. It is estimated that 50% of women will develop a UTI in their lifetime. This research aims to understand the processes by which bacteria colonize the human bladder. The work has implications for the development of new approaches to prevent and treat UTI.
Finding Therapeutic Targets For An Opportunistic Human Fungal Pathogen
Funder
National Health and Medical Research Council
Funding Amount
$404,068.00
Summary
Penicillium marneffei is a fungus that causes disease in patients with depressed immunity. This project models this infection in zebrafish, which have advantages for modelling infectious disease. It uses fluorescent fungi and fish with fluorescent immune cells to study the way white blood cells fight this infection, and mutant zebrafish and mutant fungi to find new therapeutic targets in the host-pathogen interaction.