Maximising The Effectiveness Of Interactive Automated Programs For Smoking Cessation
Funder
National Health and Medical Research Council
Funding Amount
$922,582.00
Summary
This project is to design, implement and trial automated programs to help smokers quit. It makes use of the powers of modern computing and telecommunications. It uses information the person provides to personally tailor advice and assistance to smokers as they progress from beginning to think about quitting through to being a stable, happy non-smoker. In particular, we are interested in the relative value of detailed advice as compared with the capacity of modern messaging technology (SMS, voice ....This project is to design, implement and trial automated programs to help smokers quit. It makes use of the powers of modern computing and telecommunications. It uses information the person provides to personally tailor advice and assistance to smokers as they progress from beginning to think about quitting through to being a stable, happy non-smoker. In particular, we are interested in the relative value of detailed advice as compared with the capacity of modern messaging technology (SMS, voice, images) to provide a set of prompts and reminders that help smokers manage a quit attempt and help prevent them relapsing back to smoking. Once we have developed the interventions, we will subject them to a rigorous scientific trial to see how effective they are and also how cost-effective they prove. Our hope is that these programs will provide a cheap, accessible and effective way of helping smokers to quit and thus help reduce the huge toll of smoking-related disease.Read moreRead less
Male Infertility And Defective Sperm-oocyte Interaction
Funder
National Health and Medical Research Council
Funding Amount
$244,614.00
Summary
Infertility affects 15% of people and although not usually ill, they are extremely distressed by the condition. In vitro fertilisation (IVF) with normal sperm and intracytoplasmic sperm injection for sperm defects, can assist such patients have a family, but these treatments are expensive and not always successful. The causes of male infertility are largely unknown, diagnostic methods are crude and there is usually no treatment to promote natural conception. Conventional semen analysis provides ....Infertility affects 15% of people and although not usually ill, they are extremely distressed by the condition. In vitro fertilisation (IVF) with normal sperm and intracytoplasmic sperm injection for sperm defects, can assist such patients have a family, but these treatments are expensive and not always successful. The causes of male infertility are largely unknown, diagnostic methods are crude and there is usually no treatment to promote natural conception. Conventional semen analysis provides limited information on fertilising ability. Our work over 15 years has shown that many patients go undiagnosed, particularly those with defects impairing fertilisation. During human fertilisation, sperm bind to the zona pellucida, a coat around the egg, via the membrane over a cap like structure on the sperm head called the acrosome. Binding of a sperm triggers the acrosome reaction, the process by which the membranes covering the acrosome fuse and the acrosomal contents are released. The sperm then penetrates the zona pellucida, binds to the membrane of the egg and is taken into the cytoplasm. We have developed tests to assess sperm binding to the zona pellucida and the acrosome reaction using eggs that failed to fertilise during clinical IVF. These tests show defects of sperm binding to the zona pellucida and the zona pellucida induced acrosome reaction are present in over 25% of patients without other obvious causes for their infertility. The men are severely infertile but have normal sperm by conventional tests. In this project we will determine if there are changes in membrane proteins in sperm which do not bind to the zona pellucida or undergo the acrosome reaction. We will categorise patients on the responses of their sperm to activation of key enzymes and other regulatory molecules involved in the fertilisation process. This will allow us to select subjects for further examination of protein abnormalities and genetic causes of the conditions.Read moreRead less
Worldwide there are approximately 40 million people living with HIV-AIDS. An effective HIV vaccine does not exist at present. Therefore, current strategies to control the HIV pandemic include the use of life saving antiretroviral drugs. While the current drugs are successful in controlling infections, new and more effective agents are needed that inhibit HIV replication by distinct mechanisms due to the inevitable development of drug resistant strains of HIV. The HIV reverse transcriptase enzyme ....Worldwide there are approximately 40 million people living with HIV-AIDS. An effective HIV vaccine does not exist at present. Therefore, current strategies to control the HIV pandemic include the use of life saving antiretroviral drugs. While the current drugs are successful in controlling infections, new and more effective agents are needed that inhibit HIV replication by distinct mechanisms due to the inevitable development of drug resistant strains of HIV. The HIV reverse transcriptase enzyme is essential for HIV replication and has been a successful target for nucleoside reverse transcriptase inhibitors (NRTIs) and nonnucleoside reverse transcriptase inhibitors (NNRTIs). NNRTIs act in part by stabilizing the reverse transcriptase enzyme, thus blocking enzyme function. However, no drugs have been developed that can specifically prevent formation of the reverse transcriptase enzyme, which would result in the production of noninfectious viral particles. We propose that formation of the active reverse transcriptase enzyme, from a large polyprotein called Gag-Pol, proceeds through a homodimer intermediate, which represents an ideal target for blocking reverse transcriptase formation in HIV infected cells. This homodimer intermediate is an attractive target with greater potential for disruption with small molecule inhibitors compared to the mature reverse transcriptase enzyme as it is less stable than the reverse transcriptase found in viruses. This study will determine whether formation of the active RT enzyme is dependent on this intermediate. In addition, we will examine how the reverse transcriptase encoded on Gag-Pol regulates activation of the HIV protease, which is also critical for the formation of infectious virus particles. These studies will increase our understanding of how the virus produces infectious particles and will identify new approaches for targeting the HIV reverse transcriptase enzyme.Read moreRead less
It is now well established that there are genetic factors contributing to risk of depression but it is far from clear what these are and how they interact with environmental risk factors such as stressful life events (SLE) and poor social support (SS). A recent, highly cited paper has claimed that those carrying a particular genotype at the sertonin transporter gene are much more badly affected by stressful life events than other genotypes, and that this puts these people at much higher risk of ....It is now well established that there are genetic factors contributing to risk of depression but it is far from clear what these are and how they interact with environmental risk factors such as stressful life events (SLE) and poor social support (SS). A recent, highly cited paper has claimed that those carrying a particular genotype at the sertonin transporter gene are much more badly affected by stressful life events than other genotypes, and that this puts these people at much higher risk of depression. If true, this could have important practical implications for preventative mental health, in identifying those at greatest risk if depression and counselling them to avoid stressful situations. However, success in replicating this finding has been mixed, and this is possibly because another important risk factor, social support, has not been taken into account. We have DNA samples from over 5000 twins who have been assessed for depression and risk factors including SLE and SS. This will give us unprecedented power to estimate the importance of the genotype x environment interaction. We shall also type other genes that have been implicated in depression and check for interactions with life events and social support. Our results will inform preventative strategies in mental health practice.Read moreRead less
An Investigation Of The Relationship Between The Pharmaceutical Industry, Medical Profession And Medical Practitioners
Funder
National Health and Medical Research Council
Funding Amount
$186,449.00
Summary
In recent years there has been a rapid expansion in the number and range of interactions between the pharmaceutical industry and the medical profession. While this has the potential to advance research, education and health care, there are risks that such interactions may inappropriately serve commercial objectives and ultimately compromise the best interests of patients and society in general. Most major medical and pharmaceutical organisations have released guidelines of policy statements on t ....In recent years there has been a rapid expansion in the number and range of interactions between the pharmaceutical industry and the medical profession. While this has the potential to advance research, education and health care, there are risks that such interactions may inappropriately serve commercial objectives and ultimately compromise the best interests of patients and society in general. Most major medical and pharmaceutical organisations have released guidelines of policy statements on the relationship between the medical profession and the pharmaceutical industry. To date most debate has taken the form of personal observations or professional opinion , and there has been little objective research into medical industry interactions. This project aims to examine the relationship between the pharmaceutical industry, the medical profession and the medical practitioners. Specifically, the aim of this project is to establish whether this relationship as it currently exists, and as stated in guidelines from professional bodies, is appropriate in terms of justifiable ethical standards, empirical research and social perspectives. The results of this research will enable assessment of current guidelines and the development of further guidelines and regular process where appropriate.Read moreRead less