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Vascular Cognitive Risk Score: Quantifying The Vascular Burden In Alzheimer's Disease
Funder
National Health and Medical Research Council
Funding Amount
$627,180.00
Summary
What causes dementia in a patient presenting to a clinic is often uncertain. While there are exciting potential treatments in the pipeline, we need to understand the cause of the disease in a specific patient to make correct treatment decisions. Stroke and other vascular diseases of the brain cause a significant proportion of dementia in the community. Using MRI scanning technology, this project will quantify this burden in a given patient by developing a ‘vascular cognitive risk' (VCR) score.
Is Stroke Neurodegenerative? A Longitudinal Study Of Changes In Brain Volume And Cognition Following Stroke
Funder
National Health and Medical Research Council
Funding Amount
$1,044,837.00
Summary
There is no direct evidence linking Alzheimer’s Disease (AD) and stroke. It is unknown whether stroke can trigger progressive dementia in the same way as AD. In a group of stroke patients, we will measure MRI brain volume and cognition in the 5 years after stroke. These findings will be critical for identification of those patients most at risk of dementia after stroke. This will allow future early intervention for these patients, via promising AD disease-modifying therapies.
Retinal Microvascular Signs In Acute Stroke: Prognostic Significance And Relevance To Underlying Pathophysiology
Funder
National Health and Medical Research Council
Funding Amount
$375,425.00
Summary
This project will describe abnormalities of the blood vessels of the retina in patients with stroke. Stroke is a common problem affecting some 48,000 Australians each year. Despite medical progress, stroke is commonly fatal (the third leading cause of death) and the leading cause of serious acquired disability in older people. This project will obtain detailed photographs of patients admitted to hospital with acute stroke. The acquired digital images will be analysed using new methods that asses ....This project will describe abnormalities of the blood vessels of the retina in patients with stroke. Stroke is a common problem affecting some 48,000 Australians each year. Despite medical progress, stroke is commonly fatal (the third leading cause of death) and the leading cause of serious acquired disability in older people. This project will obtain detailed photographs of patients admitted to hospital with acute stroke. The acquired digital images will be analysed using new methods that assess size of the small retinal arteries compared to veins (the arteriole-to-venule ratio) and will document other abnormalities, such as microaneurysms, haemorrhages, tortuosity and focal and generalised vessel narrowing and wall opacity. In normal populations these signs are associated with hypertension, inflammation and endothelial dysfunction and predict future stroke. These signs, and their significance have not been systematically studied in acute stroke. This may offer a window into the brain for important subgroups of stroke such as lacunar stroke. It is increasingly hard (and remains technically very difficult) to study the cause of lacunar stroke, affecting 10,000 Australians each year, as lacunar stroke has a lower fatality rate (and thus few opportunities for post mortem studies) but a high disability rate. Lacunar stroke is known to be due to small vessel disease but the exact nature of this disease is unknown. Echocardiography (to identify heart and major blood vessel abnormalities) and carotid duplex scanning (to identify critical stenosis of the major blood supply to the brain) are commonly normal in this type of stroke, and brain scanning with computerised tomography (CT) or magnetic resonance (MR) merely shows the outcome of the small vessel disease. The eye develops as part of the brain and thus retinal vascular abnormalities could add important knowledge to our understanding of stroke and add clinically useful data in the assessment of patients with stroke.Read moreRead less
Congenital brain vascular malformations are a common cause of stroke and death in young patients. This project aims to develop a new treatment for these lesions that does not require surgery. We will use focussed radiation to change the cells lining the abnormal vessels so that they can be targeted with a new treatment that causes blockage of the vessels and prevents haemorrhage.
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.
Defining The Changes In Cell Biology Caused By PRESENILIN Truncations Associated With Different Diseases
Funder
National Health and Medical Research Council
Funding Amount
$622,886.00
Summary
Truncations of the PRESENILIN genes in humans can cause two very different diseases: inherited, early onset Alzheimer’s disease (familial Alzheimer's disease) and a skin disease named inherited Acne Inversa. One truncation is also involved in the non-inherited, late onset form of Alzheimer’s disease. Why do these different truncations produce different diseases? Investigating this question will teach us more about the molecular bases of these different diseases. This understanding will be requir ....Truncations of the PRESENILIN genes in humans can cause two very different diseases: inherited, early onset Alzheimer’s disease (familial Alzheimer's disease) and a skin disease named inherited Acne Inversa. One truncation is also involved in the non-inherited, late onset form of Alzheimer’s disease. Why do these different truncations produce different diseases? Investigating this question will teach us more about the molecular bases of these different diseases. This understanding will be required for the development of treatments.Read moreRead less
Longitudinal Transcriptome Profiles For People With Dementia
Funder
National Health and Medical Research Council
Funding Amount
$475,913.00
Summary
Over the past decade, less than half a percent of drugs trialled for Alzheimer Disease were found to be effective. This highlights the need for new drug targets. This Fellowship aims to study how genes express themselves over time, among people with very high risk of dementia (genetic form of Alzheimer Disease and Huntington Disease). By looking at gene expression in nerve tissue in the nose, fluid around the brain, and blood, I hope to better understand the disease mechanisms causing dementia.
SELECTIVE VULNERABILITY IN ALZHEIMER’S DISEASE AND RELATED DISORDERS: MECHANISM OF TAU PATHOLOGY
Funder
National Health and Medical Research Council
Funding Amount
$1,072,324.00
Summary
Alzheimer’s disease and related dementias affect 230,000 people in Australia, with numbers expected to grow to 730,000 by 2050. The direct costs for health and residential care alone exceed $6.6 billion per annum. By identifying genes that protect degenerating neurons in the Alzheimer brain, a deeper understanding of the underlying processes will be gained and therapeutic targets will be defined that will assist in developing a therapy for a yet uncurable disease.
From Brain Maps To Mechanisms: Modelling The Pathophysiology Of Dementia
Funder
National Health and Medical Research Council
Funding Amount
$604,513.00
Summary
As the brain ages, the relationship between its structure and function also changes. In this study, I will use detailed computational modelling and extensive analyses of brain dynamics to improve interventional strategies by: 1. Characterising healthy and unhealthy brain dynamics during ageing; 2. Classifying the various subtypes of pathological dynamics; and 3. Predicting pathological neurodegeneration by identifying the earliest signs of perturbations in healthy ageing.