Investigating New Molecular Mechanisms That Contribute To The Establishment Of Epigenetic Silencing
Funder
National Health and Medical Research Council
Funding Amount
$1,488,142.00
Summary
Epigenetic marks are changes made to the DNA which help genes to be switched off in some cells and switched on in others e.g. for elastin to be switched on in skin and off in blood. Epigenetic marks are critical to normal development. We are interested in the genes that are necessary to add epigenetic marks to the DNA and understanding how the many genes involved in this process co-operate at the molecular level to switch genes off.
Altering Meal Times To Reverse The Metabolic Consequences Of Shift Work
Funder
National Health and Medical Research Council
Funding Amount
$735,715.00
Summary
Shift work disrupts the internal body clock, which increases the risk for obesity and type 2 diabetes. Our research demonstrates meal timing plays an important role in this metabolic disturbance. Data from animal studies suggests that the adverse consequences of shift work can be reduced by eating only during the day. This study will investigate if this also occurs in humans, potentially leading to a straightforward solution to reduce the burden of chronic diseases in shift workers.
Hyper-sensitivity Of The Circadian System To Light In Delayed Sleep Phase Disorder
Funder
National Health and Medical Research Council
Funding Amount
$378,858.00
Summary
Delayed Sleep Phase Disorder (DSPD) is a circadian rhythm sleep disorder characterized by a difficulty in initiating sleep at night and difficulty in waking at times required for work or school. It is associated with excessive daytime sleepiness, reduced academic and work performance, increased anxiety and depression and reduced quality of life. This study examines increased sensitivity of the brain's 24-hour biological clock to light as a cause of the abnormal timing of sleep in DSPD.
Impact Of Disrupted Sleep And Rhythms During Pregnancy On The Mother And Her Offspring
Funder
National Health and Medical Research Council
Funding Amount
$796,979.00
Summary
Sleep disruption and circadian rhythm disturbances are emerging as a significant public health issue for all shift workers. The objective of this study is to further define and understand the effects of disrupted sleep rhythms specifically during pregnancy on the mother’s metabolism and the long term impact on the metabolic health of her offspring. The long term aim is to use the research outcomes to develop strategies for prevention of the harm to mother and child.
Circadian Mechanisms For Sex Differences In Shift Work Tolerance
Funder
National Health and Medical Research Council
Funding Amount
$562,002.00
Summary
It is well-established that women respond more poorly than men to shift work schedules, having more health complaints, more drowsiness and more accidents at work than men. The physiological cause of this sex difference is not known. Our research suggests that differences in the circadian rhythms of women and men may promote shift work intolerance in women. This study is designed to examine sex differences in the effect of office-level light on the biological clock during a simulated night shift.
Circadian Rhythm Disruption And Metabolic Function
Funder
National Health and Medical Research Council
Funding Amount
$626,018.00
Summary
Shiftwork is an under-researched risk factor for obesity and diabetes. Because shiftwork disrupts hormonal and sleep rhythmicity, eating patterns and light exposure, abnormal rhythmicity may be a causal factor in metabolic disease. Direct evidence for the link is lacking and the underlying mechanisms responsible are unknown. This project aims to understand how shiftwork may lead to diabetes and obesity, knowledge essential for the design and testing of potential interventions.
Circadian Control Of Peripheral Gastric Satiety Signals
Funder
National Health and Medical Research Council
Funding Amount
$701,010.00
Summary
When we feel full after a meal it is the result of a variety of different nerve signals from the gut in response to distension of the stomach and specific nutrients. These signals exhibit circadian variations. The aim of this project is to determine circadian control of gastric nerve satiety signals and to determine how this is affected by obesity and what happens when you disrupt circadian rhythm. This will ultimately identify targets and treatment regimes for the pharmacological treatment of o ....When we feel full after a meal it is the result of a variety of different nerve signals from the gut in response to distension of the stomach and specific nutrients. These signals exhibit circadian variations. The aim of this project is to determine circadian control of gastric nerve satiety signals and to determine how this is affected by obesity and what happens when you disrupt circadian rhythm. This will ultimately identify targets and treatment regimes for the pharmacological treatment of obesity.Read moreRead less
Randomised Controlled Trial Of Melatonin For Delayed Sleep Phase Disorder
Funder
National Health and Medical Research Council
Funding Amount
$711,136.00
Summary
Delayed Sleep Phase Disorder (DSPD) is a sleep disorder affecting 7-16% of adolescents and young adults. It is associated with poor health and impaired academic and social functioning. We will test in a randomised controlled trial whether the hormone melatonin can be used as a treatment for DSPD. We will also assess whether genetic factors are linked to treatment outcome. The study will provide a much-needed standardised diagnostic and treatment approach for DSPD.
Relaxin-3/RXFP3 Signalling And Regulation Of Affective Behaviour _ Studies In Normal/transgenic Mice
Funder
National Health and Medical Research Council
Funding Amount
$578,268.00
Summary
Mental illness is a significant social and economic burden worldwide and knowledge of the underlying causes and more effective therapies are required. Our research aims to use pre-clinical animal models to characterize a little studied brain neuronal network implicated in control of arousal and stress, which could lead to improved treatment of psychiatric disorders such as depression.
Seizures appear unpredictable and greatly affect the quality of all aspects of life for patients with epilepsy and their carers. New advances in complex systems theory suggest that transitions from normal brain activity to seizures are preceded by measurable changes in the brain’s responses to stimuli, known as critical slowing. Measurement of critical slowing will enable prediction of seizures, providing a warning system, and possibly an opportunity to deliver preventative therapies.