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Mechanisms Of Interaction And Therapeutic Strategies For Polymicrobial Biofilms
Funder
National Health and Medical Research Council
Funding Amount
$607,231.00
Summary
A public health crisis is brewing with regard to hospital-acquired infections. The ability of bacterial and fungal organisms to attach and bind tightly to the surface of invasive medical devices is the root-cause of the majority of hospital-acquired infections. This research will study how bacteria and fungi interact in communities attached to medical devices, and devise strategies for their combined treatment.
The Use Of Nitric Oxide To Control Infections By Biofilm Forming Bacteria
Funder
National Health and Medical Research Council
Funding Amount
$551,767.00
Summary
80% of infections are the result of bacteria growing as a biofilm. It can require up to 1000x's the normal antibiotic concentration to kill a biofilm. When the bacteria disperse from the biofilm, they become antibiotic sensitive again. Our team has identified a strategy that controls biofilm dispersal. This project will design and test novel compounds that disperse biofilms so that they can be killed by the host immune response or by antibiotic treatment.
Innovative Antimicrobial Treatments For Successful Bone Allografts
Funder
National Health and Medical Research Council
Funding Amount
$473,706.00
Summary
Bone healing sites are commonly infected, and this is associated with adverse clinical and significant socioeconomic outcomes. These studies will determine whether our novel antimicrobials can be used to reduce bone infections by studying the combination of antimicrobials and bone in laboratory and bone fracture studies whilst minimising the potential of developing antibiotic resistance.
Characterisation Of Porphyromonas Gingivalis And Treponema Denticola Interactions In The Development Of A Pathogenic Biofilm
Funder
National Health and Medical Research Council
Funding Amount
$566,200.00
Summary
Gum disease (periodontitis) is an inflammatory disease caused by bacterial pathogens that is the major cause of tooth loss in adults. It is also associated with systemic diseases such as cardiovascular disease. In this study we will determine the mechanisms by which two bacterial species work together to produce the pathogenic dental plaque that causes disease.
The Biology Of Staphylococcus Epidermidis Biofilm Formation On Silicone Implantable Medical Devices And The Role Of Implant Surface Antibiotic Technology In The Prevention Of Bacterial Biofilm In And Animal Model
Funder
National Health and Medical Research Council
Funding Amount
$113,322.00
Summary
Hospital acquired infections continue to rise with over 60% occuring in patients with medical implants. Infections are due to skin bacteria forming a microscopic slime, or biofilm, around the implant. Biofilm infection is only diagnosed after implant removal, responds poorly to antibiotics, and can cause implant failure, such as joint loosening & bone infection in joint replacements and breast deformity with silicone implants. This project uses an animal model to evaluate different surface treat ....Hospital acquired infections continue to rise with over 60% occuring in patients with medical implants. Infections are due to skin bacteria forming a microscopic slime, or biofilm, around the implant. Biofilm infection is only diagnosed after implant removal, responds poorly to antibiotics, and can cause implant failure, such as joint loosening & bone infection in joint replacements and breast deformity with silicone implants. This project uses an animal model to evaluate different surface treatments to prevent bacterial biofilm formation.Read moreRead less
Development And Evaluation Of Novel Antibacterial Coatings For The Prevention Of Infection On Biomedical Devices
Funder
National Health and Medical Research Council
Funding Amount
$284,402.00
Summary
This project aims to develop infection-resistant coatings that can be applied to a wide range of biomedical devices used in human health care. Novel antibacterial compounds from Australian plants (genus Eremophila) will be coated as thin layers onto model materials used for biomedical device fabrication, then onto real-life biomedical products and evaluated for ability to deter colonization by biofilm-forming human pathogenic bacteria.
Coordinate Expression Of Virulence Factors In Pathogenic Escherichia Coli
Funder
National Health and Medical Research Council
Funding Amount
$239,250.00
Summary
Escherichia coli is a versatile pathogen capable of causing a range of disease types including diarrhoea, dysentery, haemolytic uremic syndrome, bladder and kidney infections, septicaemia, pneumoniae and meningitis. Infections due to pathogenic E. coli may be limited to mucosal surfaces or can disseminate throughout the body. Amongst the different classes of pathogenic E. coli, diarrheagenic strains (namely enterotoxigenic and enteroinvasive E. coli) are responsible for the death of an estimated ....Escherichia coli is a versatile pathogen capable of causing a range of disease types including diarrhoea, dysentery, haemolytic uremic syndrome, bladder and kidney infections, septicaemia, pneumoniae and meningitis. Infections due to pathogenic E. coli may be limited to mucosal surfaces or can disseminate throughout the body. Amongst the different classes of pathogenic E. coli, diarrheagenic strains (namely enterotoxigenic and enteroinvasive E. coli) are responsible for the death of an estimated one million humans per year, mainly in third world countries. The majority (80%) of urinary tract infections (UTIs) in humans are caused by E. coli and in Australia alone there are about 250,000 cases per year. It is estimated that one in four women and one in twenty men will develop a urinary tract infection in their lifetime. Pathogenic E. coli strains are normally equipped with multiple virulence factors and there is mounting evidence that the expression of such factors is finely orchestrated by mutual regulatory cross-talk. For example, expression of flagella (which provide motility) and adhesins (which provide attachment) are fundamentally counteracting phenotypes, yet the molecular and genetic mechanisms that coordinate their expression are unknown. I plan to examine inter-system cross-regulation of bacterial surface structures (namely adhesins, autoaggregaters, capsules and flagella). The aim is to understand on the molecular level how microorganisms orchestrate expression of virulence factors and will have consequences for our understanding of microbial pathogenicity. The strategy outlined may lead to new routes for strain attenuation and perhaps a method for vaccine strain construction. The research will be performed in collaboration with international high profile partners.Read moreRead less
Molecular Basis Of Asymptomatic Colonization Of The Human Urinary Tract
Funder
National Health and Medical Research Council
Funding Amount
$461,894.00
Summary
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 and the surface of urinary catheters. The work has implications for the development of new approaches to prevent and treat UTI ....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 and the surface of urinary catheters. The work has implications for the development of new approaches to prevent and treat UTI.Read moreRead less
CSI-Sydney: New Technologies To Treat Chronic Sinus Infection
Funder
National Health and Medical Research Council
Funding Amount
$412,213.00
Summary
Chronic sinus infection (CSI) is prevalent and results in severe discomfort and pain for many Australians; yet amazingly, has no specific cure or effective treatment. Our multi-disciplinary research team and an Australian health and medical research company, (AFT Pharmaceuticals) have partnered to develop a novel device that specifically targets the sinuses and a formulation capable for simultaneously removing mucus, dispersing biofilms and killing bacteria in the nasal cavities.