Health, Wellbeing, Disability And Service Pathways In Older (80+) Australians
Funder
National Health and Medical Research Council
Funding Amount
$373,792.00
Summary
Over the next 40 years there will be a rapid increase in the numbers of people aged 80 year and over. In this study we will examine the health status and service use needs and patterns of a sample of older Australian who form part of an existing 12 year longitudinal study on ageing and who are now moving intoold-old age. The study will provide inmportant insights for service planners and older people themselves about the health and community service needs for people in the study age group.
Randomised Controlled Trial Of Yoga For Improving Sleep And Quality Of Life In An Elderly Population
Funder
National Health and Medical Research Council
Funding Amount
$249,377.00
Summary
Insomnia is very common in the elderly and is associated with increased morbidity and reduced quality of life. Yoga is purported to assist with sleep and stress management but there is little rigorous research to confirm this and no research to determine if yoga can be adapted to an elderly population in Australia. This study aims to rigourously examine the effectiveness of yoga as an intervention for geriatric insomnia and to determine the ability of yoga to enhance quality of life.
The Role Of Sarcopenia And Undernutrition In Disability After Hip Fracture
Funder
National Health and Medical Research Council
Funding Amount
$315,391.00
Summary
Hip fracture is one of the most costly and devastating medical events which can befall an elderly individual, and is expected to affect 40,000 Australians per year by the year 2040. It often results in permanent loss of walking abilities and independence, as well as a severely diminished quality of life. For example, 80% of elderly Australians who fracture their hip will not regain their previous level of walking ability, 20% will have died, and up to 25% will be in permanent nursing home reside ....Hip fracture is one of the most costly and devastating medical events which can befall an elderly individual, and is expected to affect 40,000 Australians per year by the year 2040. It often results in permanent loss of walking abilities and independence, as well as a severely diminished quality of life. For example, 80% of elderly Australians who fracture their hip will not regain their previous level of walking ability, 20% will have died, and up to 25% will be in permanent nursing home residence 12 months later. Although hip fracture has been thought of as a problem primarily related to osteoporosis (age-related loss of bone), it is now increasingly clear that other factors such as muscle wasting and weakness, gait and balance problems and poor dietary intake are also risk factors for this condition. Although surgical techniques have advanced to the point that most operations to repair hip fracture are now successful, the rehabilitation outcomes are disappointingly poor compared to other orthopaedic injuries. We believe that this is because recovery after hip fracture is in fact not primarily related to the bone disease itself, but to inadequate muscle bulk and strength. It is likely that already frail patients with a new hip fracture will experience further muscle wasting over time, because of their very low levels of physical activity, poor nutritional intake, depression, social isolation, and impaired memory in some cases. Their poor diet may be related in part to their difficulty in getting out of the home, preparing meals, reduced appetite and poor morale in the post-fracture period. If our theory is correct, then we will be able to prove that disability after hip fracture is closely related to muscle mass, and many common clinical problems contribute to this underlying mechanism of dysfunction. We will test these ideas by following patients who have had a hip fracture for 12 months with periodic detailed assessmentsRead moreRead less
Caloric Restriction, Ageing And The Liver Sinusoidal Endothelium: Mechanisms And Implications
Funder
National Health and Medical Research Council
Funding Amount
$366,216.00
Summary
Old age is the major risk factor for many diseases yet the mechanism is unknown. We discovered age-related changes in the liver sinusoidal endothelial cell that provide a mechanism for the link between old age, lipid metabolism and vascular disease. The liver sinusoidal endothelial cell influences the transfer of substrates between the blood and liver cells, therefore changes in the liver sinusoidal endothelial cell affect liver function. We discovered major structural changes in the liver sinus ....Old age is the major risk factor for many diseases yet the mechanism is unknown. We discovered age-related changes in the liver sinusoidal endothelial cell that provide a mechanism for the link between old age, lipid metabolism and vascular disease. The liver sinusoidal endothelial cell influences the transfer of substrates between the blood and liver cells, therefore changes in the liver sinusoidal endothelial cell affect liver function. We discovered major structural changes in the liver sinusoidal endothelial cell in old age called pseudocapillarization, consisting of loss of pores, increased thickness and deposition of collagen and basal lamina. We showed that the loss of pores prevented the uptake by the liver of some lipoproteins, with implications for age-related changes in lipid metabolism and vascular disease. We have now found that caloric restriction delays pseudocapillarization. Caloric restriction is the only intervention known to increase maximal life span. This effect of caloric restriction is mediated by a protein called SIRT1 through actions on mitochondria and cell death. A naturally occurring agonist of SIRT1 called resveratrol has been found to increase longevity in yeast, worms and flies. We hypothesize that caloric restriction prevents age-related cardiovascular disease by delaying pseudocapillarization and hence maintaining hepatic metabolism of lipoproteins, particularly chylomicron remnants. We propose that caloric restriction will prevent age-related pseudocapillarization via its effects on the SIRT1 pathways and therefore pseudocapillarization will be delayed by resveratrol. Confirmation of these hypotheses will generate a unique target - pores in the liver sinusoidal endothelial cell - for the prevention of vascular disease in older people and provide a platform for the development of novel pharmacological agents such as resveratrol that act by maintaining the porosity of the liver sinusoidal endothelial cell.Read moreRead less
A Randomised Controlled Trial Of Progressive Resistance Training In Older Type 2 Diabetics At Cardiovascular Risk.
Funder
National Health and Medical Research Council
Funding Amount
$848,659.00
Summary
Australia has one of the highest rates of type 2 diabetes in the world, especially in older adults. A weight-lifting intervention could simultaneously improve glucose metabolism, physical fitness, blood pressure, cardiovascular disease risk, lipid levels, muscle mass, and fat mass, even without an overall change in body weight. We hypothesise that a high intensity weight-lifting exercise regimen will be associated with significant improvements compared to a low intensity regimen.
A Multicentre Randomised Clinical Trial Of Physical Activity For The Treatment Of Patients With Alzheimers Disease
Funder
National Health and Medical Research Council
Funding Amount
$773,752.00
Summary
The number of older adults living with Alzheimer's disease (AD) will increase from 26.6 million to 106.2 million by 2050. In the absence of curative treatment options it is important to focus on non-pharmacological interventions such as physical activity. We propose to investigate whether a home-based physical activity program of 24 weeks for patients with AD can successfully decrease the rate of cognitive and functional declince and improve quality of life and psychological well-being.
Development Of Quality Indicators For The Frail Elderly In Acute Care
Funder
National Health and Medical Research Council
Funding Amount
$372,311.00
Summary
Frail older people are particularly vulnerable to a range of mishaps while in hospital. Good care can reduce the frequency and extent of these problems. Quality indicators (QIs) assist hospitals, and clinical service units within them, to appraise their performance, and to compare it to other hospitals. QIs for the measurement of outcomes for the frail aged in the acute care setting do not exist in Australia or overseas. We aim to develop these indicators during this study.
Developing A Skin Test For Early Diagnosis Of Alzheimer's Disease And For Monitoring Effectiveness Of Treatment
Funder
National Health and Medical Research Council
Funding Amount
$285,000.00
Summary
Approximately 140,000 Australians suffer from Alzheimer's disease (AD). As the ageing population continues to grow, this number will double by the middle of the next century unless a cure or prevention is found. Scientists are continuously seeking new, more effective diagnostic tests in an effort to make it easier to diagnose AD in its early stages. Being able to recognize symptoms early and obtain an accurate diagnosis would give affected individuals a greater chance of benefiting from putative ....Approximately 140,000 Australians suffer from Alzheimer's disease (AD). As the ageing population continues to grow, this number will double by the middle of the next century unless a cure or prevention is found. Scientists are continuously seeking new, more effective diagnostic tests in an effort to make it easier to diagnose AD in its early stages. Being able to recognize symptoms early and obtain an accurate diagnosis would give affected individuals a greater chance of benefiting from putative treatments. However, there is no single, comprehensive diagnostic test for AD. Diagnostic tests (including peripheral markers) that can help to reliably diagnose AD at an early stage are needed as are tests that can help in monitoring the progression of AD, including response to therapy. The accuracy and clinical utility of previously proposed peripheral markers (platelets and pupil dilation test) is questionable. The only way to confirm a diagnosis of AD is through autopsy. We have obtained a provisional patent application for the use of a skin test for early diagnosis of AD (Patent No: PQ2881-99). This test is based on our extensive research over the past decade to understand the biochemical mechanisms underlying the txic vascular actions of beta amyloid protein. This protein has been implicated in the pathology of AD and it accumulates in the brain, peripheral tissues and is present in circulating blood of AD patients. The test is based on our discovery that vascular effects of Ab could be detected in the peripheral microcirculation .We now wish to further examine the utility of this novel skin test. If the test is sensitive, it could be used for screening; if it is specific it would be useful for confirmation of suspected AD. If the test is sensitive to change in clinical status it would help select treatments that might cure or improve the symptoms of AD.Read moreRead less
Smoking Cessation And The Risk Of Cognitive Decline In Older Men
Funder
National Health and Medical Research Council
Funding Amount
$366,250.00
Summary
Dementia is one of the most relevant health issues at the turn of the millennium, and the identification of modifiable risk factors for Alzheimer's disease (AD) and vascular dementia (VD) is essential for the successful introduction of effective preventative strategies. The results of recent studies indicate that smoking increases the risk of cognitive decline, as well as the risk of AD and VD. These findings raise the possibility that cessation of smoking may reduce cognitive impairment in late ....Dementia is one of the most relevant health issues at the turn of the millennium, and the identification of modifiable risk factors for Alzheimer's disease (AD) and vascular dementia (VD) is essential for the successful introduction of effective preventative strategies. The results of recent studies indicate that smoking increases the risk of cognitive decline, as well as the risk of AD and VD. These findings raise the possibility that cessation of smoking may reduce cognitive impairment in later life and the risk of both AD and VD. Through the Perth Elderly Cohort Study (PECS), which involves a community-representative sample of 12203 men aged 65-83 years, we have a unique opportunity to investigate the effects of smoking and smoking cessation on the cognitive abilities of a large sample of older men at risk for cognitive decline. Clearly, evidence from an experimental study that smoking cessation is followed by a reduction in risk of cognitive decline would greatly strengthen the argument that smoking is truly a cause of cognitive impairment.Read moreRead less
Effects Of Oestrogen On Mood, Memory And Quality Of Life Of Women Aged 70 Years Or Over
Funder
National Health and Medical Research Council
Funding Amount
$170,990.00
Summary
Oestrogen has a number of actions that extend well beyond the regulation of the reproductive cycle and sexual behaviour. The results of recent studies indicate that oestrogen may influence mood and a number of intellectual abilities such as memory and language. In addition, oestrogen replacement therapy seems to reduce the risk of Alzheimer's disease (the most frequent cause of dementia in Western societies) amongst postmenopausal women. The present study aims to: (1) investigate the association ....Oestrogen has a number of actions that extend well beyond the regulation of the reproductive cycle and sexual behaviour. The results of recent studies indicate that oestrogen may influence mood and a number of intellectual abilities such as memory and language. In addition, oestrogen replacement therapy seems to reduce the risk of Alzheimer's disease (the most frequent cause of dementia in Western societies) amongst postmenopausal women. The present study aims to: (1) investigate the association of depression and memory performance with physiological levels of oestrogen in women aged 70 years or over; and (2) investigate the evolution of depression and memory scores in old women treated with oestrogen replacement therapy as compared to placebo. The results of the present study may have important implications in the prevention and management of two of the most relevant mental health disorders of later life: depression and Alzheimer's disease.Read moreRead less