Understanding The Disease Burden And Antibiotic Resistance In Patients With Bloodstream Infections Caused By Enterobacteriaceae In Australia
Funder
National Health and Medical Research Council
Funding Amount
$135,285.00
Summary
This study aims to establish the epidemiology of bloodstream infections caused by Enterobacteriaceae (enteric or gut bacteria) in Australia, by examining infection rates, types of antibiotic resistance present, and which treatments optimise clinical outcomes.
Understanding Virulence Of Invasive Staphylococcus Aureus
Funder
National Health and Medical Research Council
Funding Amount
$772,711.00
Summary
Staph aureus (Golden staph) is a major cause of disease in humans. In this project we will use state-of-the-art molecular biology and genomics to fully understand the mechanisms of virulence in this pathogen. This information will inform future approaches to development of therapeutics, as well as the use of genomics in clinical microbiology and disease management.
The pneumococcus is a major cause of bacterial pneumonia, sepsis and meningitis especially in children and the elderly. Antibiotic-resistant pneumococci are becoming more prevalent, and available vaccines have major shortcomings. We propose to identify and characterise the factors produced by this organism during infection that enable it to cause invasive disease. Such factors could be incorporated into protein-based pneumococcal vaccines currently under development.
Utilisation Of The Human Plasminogen Activation System By Group A Streptococci: Contribution To Virulence And Disease
Funder
National Health and Medical Research Council
Funding Amount
$254,250.00
Summary
Streptococcus pyogenes (group A streptococci; GAS) is a bacterium which causes human skin and throat infections as well as highly invasive diseases including the flesh eating disease necrotising fasciitis. Additionally, serious sequelae, including rheumatic fever and acute glomeulonephritis, may result following infection. Such diseases cause high morbidity and mortality in Aboriginal populations and are a continual significant drain on the national health fund. An important mode of invasion by ....Streptococcus pyogenes (group A streptococci; GAS) is a bacterium which causes human skin and throat infections as well as highly invasive diseases including the flesh eating disease necrotising fasciitis. Additionally, serious sequelae, including rheumatic fever and acute glomeulonephritis, may result following infection. Such diseases cause high morbidity and mortality in Aboriginal populations and are a continual significant drain on the national health fund. An important mode of invasion by GAS may be related to their ability to capture and activate host plasminogen via surface-associated or secreted plasminogen binding proteins (receptors). Plasminogen can be activated by host activators or secreted GAS streptokinase to the potent enzyme plasmin which is responsible for the degradation of tissue barriers. Thus, GAS may utilise plasmin to destroy tissue barriers and invade host tissues. The characterisation of the interaction between GAS and the plasminogen activation system would clarify the role of this system in invasive disease and provide potential targets for therapeutic intervention.Read moreRead less