THE EFFECTS OF TRANSCRANIAL MAGNETIC STIMULATION (TMS) ON RAT MODELS OF DEPRESSION
Funder
National Health and Medical Research Council
Funding Amount
$204,274.00
Summary
Repetitive Transcranial Magnetic Stimulation (rTMS) is the direct stimulation of the brain by using high field magnetic pulses. It is a new technique that has been demonstrated to have some potential as a treatment of depressive illness and possibly other neuropsychiatric disorders. At this early stage of its investigation, the parameters of stimulation that are most likely to be therapeutic, and its mechanisms of action, are not known. Published studies vary in the frequency, duration and exten ....Repetitive Transcranial Magnetic Stimulation (rTMS) is the direct stimulation of the brain by using high field magnetic pulses. It is a new technique that has been demonstrated to have some potential as a treatment of depressive illness and possibly other neuropsychiatric disorders. At this early stage of its investigation, the parameters of stimulation that are most likely to be therapeutic, and its mechanisms of action, are not known. Published studies vary in the frequency, duration and extent of stimulation, with no firm guidelines about optimal parameters. Empirical study of the relative effects of stimulation at different frequencies, at different numbers of stimuli and for different durations is therefore important for the future development of this treatment. Such an investigation is best carried out in an animal model of depression for both ethical and practical reasons, as such studies in patients would possibly take many years and be extremely difficult to conduct. We propose such a study in rat models of depression which have demonstrated validity and utility in drug research. Rat models have a long track record in developing psychiatric treatments and are cost-effective and of proven value. We also plan to investigate the neuroanatomy of the immediate-early genes induced by TMS and compare it with electroconvulsive shock (ECS) and a tricyclic antidepressant, two established treatments of depression. The results will have implications for future human studies in guiding us toward the optimal parameters for therapeutic effects. They will also enhance our understanding of the mechanism of action of TMS in depression.Read moreRead less
Using Mathematical Models To Assess The Impact Of Interventions To Reduce Sexually Transmitted Infections In Australia
Funder
National Health and Medical Research Council
Funding Amount
$562,276.00
Summary
Sexually transmitted infections (STIs) are an increasing public health problem in Australia. Australia's recent National Transmissible Infections Strategy identified chlamydia control, STI prevention in gay men and STIs in Aboriginal and Torres Strait Islander communities as priority areas. We propose to develop mathematical models of STI transmission and use these to help understand and identify the most cost-effective interventions to reduce the impact of STIs on Australian populations.
Mathematical Modelling Of Bacterial Carriage In Children
Funder
National Health and Medical Research Council
Funding Amount
$421,746.00
Summary
Children exposed to larger numbers of other children are at risk of persistent bacterial infections. Such circumstances explain the high rates of ear and chest infections, and skin sores seen in children in historical times. Changing social circumstances (smaller families, better housing, nutrition and hygiene), as well as the introduction of antibiotics, explain the decline of such infections in affluent communities since the early 20th century. However, even today, in affluent countries, child ....Children exposed to larger numbers of other children are at risk of persistent bacterial infections. Such circumstances explain the high rates of ear and chest infections, and skin sores seen in children in historical times. Changing social circumstances (smaller families, better housing, nutrition and hygiene), as well as the introduction of antibiotics, explain the decline of such infections in affluent communities since the early 20th century. However, even today, in affluent countries, children attending group child care are at high risk of ear infections. As many bacteria are resistant, antibiotics are now much less effective than when they were first introduced. Furthermore, there is a continuing load of infection for children in Aboriginal communities, in PNG and other developing countries, causing hearing loss, chronic respiratory problems, and heart disease and renal disease in later life. Using data previously collected from other studies in Indigenous communities and children in child care, mathematical models allow us to ask what if?, and answer important public health questions: 1. What environmental and public health measures can reduce the cycle of cross-infection in child-care and high-risk populations? 2. What coverage rates with pneumococcal vaccine will eliminate the vaccine-specific bacteria from child care centres, from the wider community, and from high risk populations? 3. Will infections with bacteria not covered by vaccine then increase? 4. Will the resistant bacteria tend to disappear if antibiotic use is restricted? 5. Under what circumstances will antibiotics help to control infection? The modelling will promote understanding of the social and health costs of bacterial infection in Aboriginal communities and child care and use educational scenarios to promote uptake of the most cost-effective and socially acceptable interventions.Read moreRead less
A Randomised Controlled Trial Of Caseload Midwifery Care
Funder
National Health and Medical Research Council
Funding Amount
$761,311.00
Summary
There is concern about the rising levels of caesarean section in Australia and some evidence that women may benefit from caseload midwifery care. This randomised control trial will determine whether caseload midwifery care can reduce interventions and is as safe as usual hospital maternity care. A Cochrane systematic review of midwifery led care versus routine care was designed to answer these questions.This will be the first randomised controlled trial to contribute to this review
Modelling The Interaction Between Sexually Transmitted Infections And HIV Transmission To Inform Public Health Policy
Funder
National Health and Medical Research Council
Funding Amount
$543,624.00
Summary
Other sexually transmitted infections (STIs) increase the risk of acquiring or transmitting HIV. Using mathematical models the population level effects of this increased risk will be investigated. This work will inform the design of effective and efficient STI treatment programs that aim to reduce the number of HIV infections in Australian gay men, prevent HIV epidemics in Aboriginal and Torres Strait Island communities, and slow the growth of HIV in Papua New Guinea.