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The brain regulates body temperature by a series of mechanisms, including the control of how much blood flows to the skin to lose or retain heat. The project aims to locate the brain temperature receptors and brain pathways that do this, using an animal model, the rat. At present they are not known.
Hypothalamic Oxexin-synthesizing Neurons Regulate The Ultradian Basic Rest-Activity Cycle (BRAC); Studies In Transgenic Rats And Mice
Funder
National Health and Medical Research Council
Funding Amount
$588,418.00
Summary
In the hypothalamus region of the brain there is a group of neurons that synthesize a neuropeptide messenger called orexin. In humans, malfunction of orexin neurons results in narcolepsy (abnormal sleepiness) and in disordered metabolism resulting in obesity. Our experiments, conducted in genetically-modified rats and mice, will elucidate the manner in which the orexin neurons integrate our behaviour (eg eating) with our physiological state (eg body and brain temperature, arterial blood pressure ....In the hypothalamus region of the brain there is a group of neurons that synthesize a neuropeptide messenger called orexin. In humans, malfunction of orexin neurons results in narcolepsy (abnormal sleepiness) and in disordered metabolism resulting in obesity. Our experiments, conducted in genetically-modified rats and mice, will elucidate the manner in which the orexin neurons integrate our behaviour (eg eating) with our physiological state (eg body and brain temperature, arterial blood pressure).Read moreRead less
Unveiling The Origin Of Munc18-1 And Alpha-synuclein Co-aggregation At Nanoscale
Funder
National Health and Medical Research Council
Funding Amount
$620,005.00
Summary
Our recent work on Munc18-1 mutations leading to a severe form of human early infantile epileptic encephalopathy (EIEE) led us to uncover a critical role for Munc18-1 in controlling the formation of toxic protein aggregates containing ?-Synuclein. Targeting the Munc18-1 ?-Synuclein interaction may have therapeutic values not only for EIEE but also for other neurological diseases characterised by protein aggregations.
DUAL AND MULTIPLE PROTEINOPATHIES IN NEURODEGENERATIVE DEMENTIAS – RISK FACTORS, PROGNOSTIC INDICATORS AND CLINICAL RAMIFICATIONS
Funder
National Health and Medical Research Council
Funding Amount
$604,644.00
Summary
Dementia is the umbrella term used to refer to a number of different clinical presentations,each associated with distinct histopathological signatures of protein aggregates and spread.However, converging evidence now suggests the common co-occurences of dual/multiple proteinopathies across dementia syndromes.The present study will identify the clinical ramifications and factors that are most predictive for such proteinopathies in a large cohort of longitudinally-studied patients with dementia.
Defining Reciprocal Neural Circuits That Regulate Appetite And Memory
Funder
National Health and Medical Research Council
Funding Amount
$341,935.00
Summary
How we remember meals influences how much we eat at later time points. This kind of memory likely comes from both the traditional brain areas associated with memory formation, and from areas associated with regulating appetite. How these two brain regions work together to help animals remember what they ate, where they found it, and whether they liked it is not known. This project investigates how these memories are formed and how they are used by animals to make decisions about future meals.
Understanding How The Brain Senses And Encodes Hunger And Satiety
Funder
National Health and Medical Research Council
Funding Amount
$473,477.00
Summary
Obesity is the most important health concern in the world today. Despite all the epidemiology evidence and despite the intervention approaches, obesity and type-2 diabetes continues to rise in Australia and worldwide. Clearly, a greater biological understanding of the mechanisms driving increased calorie intake and decreased calorie expenditure. This fellowship explores the different neural circuits in the brain and how they regulate motivation for food and food consumption
Understanding The Molecular Basis Of Central Nervous System Myelination
Funder
National Health and Medical Research Council
Funding Amount
$408,388.00
Summary
Oligodendrocytes are the cell type in the central nervous system that produce myelin, the insulating layer around nerve cells. Loss of oligodendrocytes and myelin are key features of multiple sclerosis. This project aims to clarify the mechanisms that control the myelination of nerve cells during normal development, allowing the development of strategies to promote myelin repair in human diseases such as Multiple Sclerosis.
Understanding The Contribution Of Iron In Traumatic Brain Injury
Funder
National Health and Medical Research Council
Funding Amount
$601,263.00
Summary
Our group has discovered a novel role of amyloid precursor protein (APP) in cellular iron balance similar to another protein called ceruloplasmin (CP). Both, prevalently found in the brain, convert a damaging iron variety into the safer form. Disruption in either protein leads to cell death. We aim to establish how failure in APP and CP response may be detrimental to traumatic brain injury recovery. Understanding the iron role of APP and CP will lead to therapeutics to counter traumatic injury.
The Role Of Long Noncoding RNAs In Parkinson’s Disease
Funder
National Health and Medical Research Council
Funding Amount
$692,699.00
Summary
Parkinson's disease is a complex neurodegenerative disorder. For 90% of patients there is no known cause and for all patients there is no cure. The development of genome studies and transcriptome sequencing has revealed a class of noncoding RNAs whose regulation or dysregulation may lay at the heart of what goes wrong for PD sufferers. Our laboratory focuses on critical PD genes and their regulation by long noncoding RNAs.
Which Neurons Maintain Sympathetic Vasomotor Tone?
Funder
National Health and Medical Research Council
Funding Amount
$567,918.00
Summary
High blood pressure is a major risk factor for cardiovascular disease, a major burden of disease worldwide. High levels of nerve activity that cause the blood vessels to constrict elevating blood pressure are characteristic of hypertension. We do not know which brain cells set and maintain this nerve activity. We will identify these cells, determine how they function and what regulates them. Ultimately we could control these cells treating the cause of hypertension or when clinical need arises.