Tumour Antigen Cross-presentation: Efficiency, Biology And Role Of Inhibitory B7 Homologue Molecules
Funder
National Health and Medical Research Council
Funding Amount
$469,500.00
Summary
It is now known that the body s immune system often attempts to attack cancers but this response is generally fairly weak. It was previously thought that one of the main reasons for this failure was that the immune system was ignorant of the presence of the cancer until too late. Our recent work over the past few years has shown that this is not the case. A process called cross-presentation seems to efficiently and continuously expose the cancer to the body s anti-cancer killer T-cells. This gra ....It is now known that the body s immune system often attempts to attack cancers but this response is generally fairly weak. It was previously thought that one of the main reasons for this failure was that the immune system was ignorant of the presence of the cancer until too late. Our recent work over the past few years has shown that this is not the case. A process called cross-presentation seems to efficiently and continuously expose the cancer to the body s anti-cancer killer T-cells. This grant will work out exactly how efficient that process is, which cells are responsible and some aspects of how it happens. We will also study whether some recently-discovered braking molecules, which slow down immune responses and which could be 'applying the brakes' to anti-cancer responses. This could lead to new approaches to therapy eg by removing these brakes during vaccination therapy.Read moreRead less
P.gingivalis GroEL And HSP60 Specific T Cells In Periodontal And Cardiovascular Diseases
Funder
National Health and Medical Research Council
Funding Amount
$619,500.00
Summary
Cardiovascular diseases are the major cause of death in adults in most developed and many developing countries. In recent years there has been accumulating evidence that chronic infections such as Helicobacter pylori and Chlamydia pneumoniae are associated with cardiovascular diseases. Chronic inflammatory periodontal diseases are among the most common chronic infections with over one million Australians at risk of losing their teeth. Poor dental health and in particular chronic periodontitis is ....Cardiovascular diseases are the major cause of death in adults in most developed and many developing countries. In recent years there has been accumulating evidence that chronic infections such as Helicobacter pylori and Chlamydia pneumoniae are associated with cardiovascular diseases. Chronic inflammatory periodontal diseases are among the most common chronic infections with over one million Australians at risk of losing their teeth. Poor dental health and in particular chronic periodontitis is now consistently being associated with a number of other diseases and conditions including cardiovascular disease. In some studies the relationship between periodontal disease and cardiovascular disease is stronger than that for other risk factors such as smoking and high cholesterol. Periodontitis results from the inflammatory response to dental plaque. One of the major pathogens identified in dental plaque is P.gingivalis. Heat shock proteins (HSP) are expressed by cells on exposure to various forms of stress including temperature and injury. They participate in physiological processes such as the assembly, transport and protection of proteins from breakdown. There is a remarkable conservation in the structure of heat shock genes and HSP across species. Many pathogens including P.gingivalis bear antigens that are similar to human HSPand cross reactivity during infection may result in disease such as atherosclerosis. This study aims to test the hypothesis that cross reactivity between the bacterial antigens and HSP may explain the mechanism of the association between periodontal disease and cardiovascular disease. This would have a significant impact on the treatment of both periodontal and cardiovascular disease.Read moreRead less
Amoxycillin For Persistent Nasal Discharge In Rural And Remote Aboriginal Children: A Randomised Controlled Trial
Funder
National Health and Medical Research Council
Funding Amount
$226,738.00
Summary
Aboriginal children have the highest rates of acute and chronic respiratory diseases ever documented. While the underlying cause is socioeconomic disadvantage, the features of poverty that result in disease are not clear. Our current understanding of important risk factors like overcrowding, malnutrition and smoke exposure cannot completely explain the excessively high rates of disease seen in rural and remote Aboriginal communities. This randomised, double-blind, placebo-controlled clinical tri ....Aboriginal children have the highest rates of acute and chronic respiratory diseases ever documented. While the underlying cause is socioeconomic disadvantage, the features of poverty that result in disease are not clear. Our current understanding of important risk factors like overcrowding, malnutrition and smoke exposure cannot completely explain the excessively high rates of disease seen in rural and remote Aboriginal communities. This randomised, double-blind, placebo-controlled clinical trial will measure the impact of antibiotic treatment on persistent nasal discharge and rates of transmission of bacterial respiratory pathogens. An innovative study design will test the efficacy of twice daily doses of amoxycillin on newly developed clinical and bacteriological outcome measures. Both the investigators and the Aboriginal community have considerable experience in conducting this type of research and are committed to using a cooperative model of clinical research to reduce disease burden. Ongoing training of Aboriginal health workers in the principles of clinical epidemiology is an essential component of this process. This study will make an important contribution to the medical literature. Despite the deaths of around 10,000 children children from acute respiratory infections each day, very little is known about how antibiotics affect the transmission of some of the principal causative organisms. This project will greatly assist the development of appropriate antibiotic prescribing practices in high-risk populations.Read moreRead less