Salt And Cardiovascular Disease: Does Acute Salt-Sensitivity Convey Greater Cardiovascular Risk?
Funder
National Health and Medical Research Council
Funding Amount
$597,578.00
Summary
Salt intake of Australian adults is 10X more than required. Further, salt intake in very young children is alarmingly high secondary to high consumption of salty snacks and processed food. High dietary salt intake has been associated with increased cardiovascular disease and death. We will examine the cardiovascular risks for adults and children on a high salt diet and examine whether switching to a low salt diet ameliorates the high blood pressure and heart disease caused by high salt diets
UTILITY OF NOVEL BIOMARKERS IN THE PREDICTION OF MAJOR COMPLICATIONS OF TYPE II DIABETES MELLITUS
Funder
National Health and Medical Research Council
Funding Amount
$510,639.00
Summary
Diabetes is increasingly common. It can cause a variety of complications, the most serious being heart and kidney disease. The reasons why some patients develop such complications are not fully understood so it is difficult to predict who will be affected. The current project will use samples from a large international study of patients with diabetes to assess whether levels of specific markers in the blood help to predict major complications and clarify why they occur.
Randomised Double-blind Placebo-controlled Trial Of Aspirin In Primary Prevention Of CVD Events Or Dementia In The Aged.
Funder
National Health and Medical Research Council
Funding Amount
$3,532,500.00
Summary
The single most important risk factor for cardiovascular disease is age. All men aged 75 years have a 10-15% risk of having a stroke or heart attack in the next 5 years. Low dose aspirin has been shown to prevent further strokes and heart attacks in people who have already had one. It has been also shown to protect people who have not had a heart attack or stroke but who are at increased risk. Given that the elderly are at increased risk why do we need to do a trial in this particular group? The ....The single most important risk factor for cardiovascular disease is age. All men aged 75 years have a 10-15% risk of having a stroke or heart attack in the next 5 years. Low dose aspirin has been shown to prevent further strokes and heart attacks in people who have already had one. It has been also shown to protect people who have not had a heart attack or stroke but who are at increased risk. Given that the elderly are at increased risk why do we need to do a trial in this particular group? The reason is that relatively few elderly patients were included in the previous prevention trials. Also while the elderly may have the most to gain from treatment, they also have the most to lose because they are more likely to suffer from side-effects. Aspirin prevents heart attacks by stopping clots forming in blood vessels. This also means that people taking it have an increased tendency to bleed. Thus though it may prevent strokes due to clots it may also increase the risk of strokes caused by bleeding. Bleeding from the gut is another major problem as aspirin tends to erode the lining of the stomach. Minor bleeding from the gut can also lower blood oxygen carrying capacity which may exacerbate other diseases associated with ageing, e.g. heart failure. Dementia may be caused by repeated clots in small or large vessels. Dementia is a particular problem in the elderly affecting 10% of 85 year olds. It is a major cause of loss of quality of life and a significant cost to the community. Aspirin may reduce the progression of such a disease leading to a maintained quality of life (QOL) for individuals and their families. As our age increases our years of life remaining decreases. This is self-evident. Thus the potential to add years to life reduces and the potential of diseases to adversely affect quality of life becomes more important. Thus it may be more important to prevent a nonfatal stroke that leads to institutionalisation than a fatal stroke. Hence QOL will be assessed.Read moreRead less
Targeting The AGE-RAGE Axis In Diabetes Associated Atherosclerosis
Funder
National Health and Medical Research Council
Funding Amount
$542,859.00
Summary
Based on extensive preliminary data we porpose that the AGE intercation with RAGE plays an important role in diabetes associated atherosclerosis. We will perform studies using a soluble form of the receptor RAGE which will trap AGEs in the blood and tissues and thus prevent diabetes related blood vessel damage. Furthermore, we will investigate if RAGE receptor on inflammatory cells such as macrophages plays a pivotal role in blood vessel injury in diabetes.
C-Jun N-terminal Kinase Actions In The Response To Stress
Funder
National Health and Medical Research Council
Funding Amount
$480,127.00
Summary
All cells in our body sense and respond to stressful changes in our environment. We are focused on enzymes called JNKs that relay this information, and so form part of the key response pathways. JNKs are now being evaluated as new drug targets for the treatment of diseases including diabetes and stroke, but we know very little about how JNKs work in stressed cells. We will define new partners for the JNKs and in so doing reveal new information on the stress-activated events they regulate.
A Randomised Controlled Trial Of A Nurse-led Intervention For Less Chronic Heart Failure: The NIL-CHF Study
Funder
National Health and Medical Research Council
Funding Amount
$1,166,160.00
Summary
The overall aim of the unique NIL-CHF Study is to examine the benefits of applying a specialist nurse-led, home and clinic-based intervention to optimise the care of recently discharged hospital patients with heart disease. Involving 950 patients, it will explore whether more flexible and individualised care to apply the best possible medical treatments is able to PREVENT the most deadly and disabling form of heart disease (chronic heart failure - CHF) and save money in the process.
IDENTIFICATION OF BRAIN NEURONS INVOLVED IN THE CARDIOVASCULAR RESPONSE TO FEAR AND FLIGHT
Funder
National Health and Medical Research Council
Funding Amount
$400,247.00
Summary
The circulatory system of the body acts in concert with the respiratory system to distribute oxygenated blood to the brain and other organs and tissues of the body. Control of blood pressure and heart rate is achieved largely through the actions of the central nervous system on effector organs and tissues such as the heart and blood vessels. This control is exerted through the actions of nerves in the body which affect the rate and force of contraction of the heart and the diameter of blood vess ....The circulatory system of the body acts in concert with the respiratory system to distribute oxygenated blood to the brain and other organs and tissues of the body. Control of blood pressure and heart rate is achieved largely through the actions of the central nervous system on effector organs and tissues such as the heart and blood vessels. This control is exerted through the actions of nerves in the body which affect the rate and force of contraction of the heart and the diameter of blood vessels which restrict the flow of blood to the tissues. These nerves, in turn, are under the control of brain cells or neurons which are located in the brainstem. Blood pressure-controlling neurons, acting upon information they receive from pressure sensors in the major blood vessels in the chest cavity, can alter their activity so that blood pressure is maintained within normal limits. Our laboratory has been examining the properties of these blood pressure-controlling neurons by recording their minute electrical discharges and by studying other brain regions which are able to influence them. In this study, we will use newly-developed procedures which will allow us to identify the precise locations of these neurons in the brain, to study which neurotransmitters (chemicals released by neurons which are used to communicate with other neurons) they use, as well as to identify other regions of the brain they connect with and influence. The major significance of this work will be that new brain circuits which transmit information about the status of the cardiovascular system to other areas of the brain will be identified. Our understanding of, and the development of new treatments for, cardiovascular diseases such as high blood pressure and heart failure are critically dependent on advancing our understanding of the nervous system.Read moreRead less
A Multi-setting Intervention To Reduce Sedentary Behaviour, Promote Physical Activity And Improve Childrens Health
Funder
National Health and Medical Research Council
Funding Amount
$860,343.00
Summary
Sedentary behaviours and physical inactivity play a major role in the rising prevalence of obesity among children in Australia. This intervention study will take place in the school and family settings which play a critical role in shaping children's health behaviours. The objective is to determine whether a 2-year behavioural intervention reduces sedentary behaviour and promotes physical activity and results in improved health among 8-9 year old children.
Novel Retinal Architectural Vascular Signs And Risk Of Cardiovascular Disease: The AusDiab Study
Funder
National Health and Medical Research Council
Funding Amount
$754,254.00
Summary
Cardiovascular disease (CVD) and diabetes are major health problems. Identifying 'people at risk' is critical to design preventative strategies. We have developed new computer software to measure detailed characteristics of retinal vessels. By appling this system to predict CVD or diabetes in the AusDiab Study we aim to find 'the best combination of risk factors' to predict CVD and diabetes. This will open up the possibility of new risk assessment using a simple 'eye scan.'
Understanding The Metabolic Consequences Of Impaired AMPKa2 And NNOS� In Skeletal Muscle: Implications For The Metabolic Syndrome
Funder
National Health and Medical Research Council
Funding Amount
$575,527.00
Summary
The inability of muscle to utilise sugar from the blood is a major problem that contributes to obesity and Type 2 diabetes. Since the number of people with these diseases will at least double by 2030, we need to find out what causes this problem. We will examine whether two muscle proteins that are impaired in obesity and Type 2 diabetes are also responsible for impaired sugar utilisation. We think that increasing these muscle proteins will fix the _sugar problem�, and remedy these diseases.