Reducing Risk Factors For Falls And Fracture In Obese Older Australians
Funder
National Health and Medical Research Council
Funding Amount
$425,048.00
Summary
Australia’s obese older population is growing, and a large number of fractures now occur in obese older adults. This research program aims to reduce falls and fracture risk in obese older adults through innovative exercise programs which target improvements in bone and muscle health, and a wearable device that enables measurement of this type of exercise. The findings will contribute to exercise guidelines which are urgently needed to reduce the costly impact of falls and fracture in Australia.
Nutrition, Physical Function And Muscle Mass In Advanced Liver Disease
Funder
National Health and Medical Research Council
Funding Amount
$303,014.00
Summary
Muscle wasting is associated with increased risk of death in patients with liver disease. Many factors contribute to this muscle wasting, but our group’s recent finding that testosterone therapy increases muscle mass in men with liver disease remains the only proven treatment. This project aims to increase understanding of the causes of muscle wasting and to show that testosterone treatment improves clinical outcomes, which could improve the health of liver disease sufferers worldwide.
The Effects Of Testosterone And A Nutritional Supplement On Hospital Admissions In Under-nourished, Older People.
Funder
National Health and Medical Research Council
Funding Amount
$1,054,231.00
Summary
Weight loss and undernutrition in older people are assocated with poor outcomes including increased rates of hospital admissions and death. In a pilot study of 49 undernourished older, community dwelling people we found that daily treatment for one year with a combination of testosterone tablets and a nutritional supplement produced a significant reduction in hospitalisations. We propose a larger, multicentre study to explore and hopefully confirm this exciting, potentiallly important finding.
A Dietary Intervention For Sarcopenia In Cirrhosis
Funder
National Health and Medical Research Council
Funding Amount
$128,224.00
Summary
Patients with chronic liver failure, or cirrhosis, suffer many complications. Sarcopenia, the loss of muscle and muscle weakness, is one of these. It is associated with reduced survival. Patients with cirrhosis have low levels of branched chain amino acids (BCAAs) which are used as building blocks for protein and energy in muscle. We aim to explore how oral supplements of BCAAs might improve muscle in this population. If this improves muscle mass, we also expect it may improve other outcomes.
Optimising Benefits And Minimising Potential Harms Of Obesity Treatments
Funder
National Health and Medical Research Council
Funding Amount
$707,370.00
Summary
This work aims to find safe and more effective obesity treatments for the over 2.1 billion people worldwide with overweight or obesity. Severely energy restricted diets are currently the most effective dietary obesity treatment, but these are underutilized due to concerns about potential harms. This work will investigate using severe diets intermittently rather than continuously, as a means of enhancing their benefits of long-term weight/fat loss while also reducing potential harmful effects.
Investigating Follistatin-based Interventions For Long Term-protection Against Frailty Associated With Chronic Illness And Aging
Funder
National Health and Medical Research Council
Funding Amount
$987,169.00
Summary
Effective therapies are urgently needed to combat frailty arising from muscle wasting associated with chronic illness and aging. The proposed studies will investigate the prospects of developing novel short-term interventions that can confer long-term benefits for preventing and treating muscle wasting associated with chronic illness and advanced aging.
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
Using Gene Delivery Tools To Understand And Treat Skeletal Muscle-related Disease
Funder
National Health and Medical Research Council
Funding Amount
$459,270.00
Summary
As a muscle biologist, I study the mechanisms that regulate skeletal muscle size, so that we can develop therapies for muscle wasting. What sets my research apart is my combination of expertise in muscle biology, and the use of recombinant viral vectors for altering the expression of specific genes exclusively in skeletal muscles. Our approaches enable us to study the inner workings of muscles in ways others cannot, and develop promising new therapies for treating muscle diseases.
Postsynaptic Signalling Systems That Sustain The Nerve-muscle Synapse
Funder
National Health and Medical Research Council
Funding Amount
$598,041.00
Summary
Neuromuscular junctions (NMJ) are the synapses through which motor nerves control our voluntary muscle cells. This project will investigate the molecular signalling system between nerve and muscle that helps maintain healthy NMJs. Normal ageing involves a progressive decline in muscle strength, often leading to loss of independence in the elderly. We will use a mouse model to test whether a breakdown of the NMJ signalling system contributes to the loss of strength in old age.
Interactions Between The ? And ? Subunits Of The DHPR - A Missing Link In Skeletal Muscle Excitation-contraction Coupling And A Role In Sarcopenia
Funder
National Health and Medical Research Council
Funding Amount
$690,832.00
Summary
Calcium signaling is disrupted in muscle diseases, including muscle weakness in the elderly. This is a significant problem as all mobility depends on calcium signaling and its disruption can cause serious disability and death. To alleviate defective calcium signaling, the underlying molecular machinery must be fully understood, yet we have only a broad outline of the processes. We will address this problem to provide a platform for alleviating age-related muscle weakness.