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Evaluation Of Naturally Occurring Resistance To Direct Acting Antiviral Drugs (DAAs) In Individuals With Acute Hepatitis C Infection
Funder
National Health and Medical Research Council
Funding Amount
$333,778.00
Summary
Hepatitis C therapy in the future is likely to involve the use of Directly Acting Antivirals, which offer a better chance of treatment success and shorter treatment courses. The downside to these new agents is the possible development of drug resistance. Studies suggest that drug resistant strains may already exist in some individuals prior to treatment. This study plans to use sensitive methods to examine how common drug resistant strains are in untreated individuals with acute hepatitis C.
Recently Acquired Hepatitis C Infection: Insights From Virological, Therapeutic And Epidemiological Studies
Funder
National Health and Medical Research Council
Funding Amount
$415,218.00
Summary
Every year around 10,000 new cases of hepatitis C (HCV) infection occur within Australia, most of which are undiagnosed. Reasons for this include a lack of public awareness about the benefits of treatment at this stage. As new antiviral agents become available it is likely that therapy for recent HCV will become even easier and more successful. The aim of this research is to explore HCV transmission patterns, treatment strategies and long term health outcomes in people with recent HCV.
Study Of Papillomavirus DNA Encapsidation And Formation Of Infectious Virions
Funder
National Health and Medical Research Council
Funding Amount
$214,053.00
Summary
Papillomavirus (PV) is a sexually-transmitted virus that is a major cause of cervical cancer. Our study will determine how PV is able to form new virus particles inside infected cells. This is a critical part of the virus life-cycle, and a better understanding of this process may allow it to be trageted by anti-viral treatments. In addition, we will develop a method to create non-harmful virus particles which we will use to study human immune responses to the virus.
Development Of Improved Vaccine Strategies For Measles Using Plant-derived Edible Vaccines
Funder
National Health and Medical Research Council
Funding Amount
$331,980.00
Summary
Measles is a highly contagious viral disease that is contracted via the respiratory tract. Severe infection may lead to complications such as otitis media, pneumonia, encephalitis. Despite our current vaccination strategy outbreaks still occur in Australia and measles is a major problem in developing countries. In developing nations the case fatality rate of measles is several hundred times that of developed nations. Over 800,000 children still die each year due to measles. Problems with the cur ....Measles is a highly contagious viral disease that is contracted via the respiratory tract. Severe infection may lead to complications such as otitis media, pneumonia, encephalitis. Despite our current vaccination strategy outbreaks still occur in Australia and measles is a major problem in developing countries. In developing nations the case fatality rate of measles is several hundred times that of developed nations. Over 800,000 children still die each year due to measles. Problems with the current vaccination strategy are: a) doesn't work in children less than 1 year of age, b) must be kept cold c) must be given by injection. We believe that a plant derived edible vaccine for measles will address the limitations of currently available vaccine i.e. we can give it children under the age of 1 year, it can be eaten and doesn't have to be kept cold.Read moreRead less
Though vaccination has had a major impact on the number of persons becoming infected, chronic infection with the hepatitis B virus (HBV) still remains a major worldwide problem, with 350 million people chronically infected. The existence of HBV vaccine escape mutants and the fact that 5% of vaccinees fail to respond implies that HBV will remain a significant public health problem for the foreseeable future. Current treatments for chronic HBV infection have a low success rate (~20%) and patients ....Though vaccination has had a major impact on the number of persons becoming infected, chronic infection with the hepatitis B virus (HBV) still remains a major worldwide problem, with 350 million people chronically infected. The existence of HBV vaccine escape mutants and the fact that 5% of vaccinees fail to respond implies that HBV will remain a significant public health problem for the foreseeable future. Current treatments for chronic HBV infection have a low success rate (~20%) and patients with chronic infection are expected to die prematurely due to chronic liver disease or primary liver cancer. Interestingly, exposure to HBV can lead to either acute resolving or chronic HBV infection. Like chronic infections, acute infections involve spread of virus to virtually every hepatocyte, followed by rapid clearance of the virus mediated by the host immune response. Our immediate aim is to study the resolution of acute HBV infections to determine how the stable intracellular viral genome, covalently closed circular DNA (cccDNA), is cleared from the nucleus of infected hepatocytes. Our broad long-term aim is to develop new and effective treatments for chronic HBV infection based on a better understanding of how acute HBV infections are resolved by the host. Based on our previous work we believe that clearance of cccDNA requires hepatocyte death, together with compensatory proliferation of other infected hepatocytes. We will perform detailed studies in duck hepatitis B virus (DHBV) infected ducks to determine if hepatocyte death and compensatory proliferation are essential to clear the infection, or if mechanisms exist for clearance that do not involve cell destruction.Read moreRead less