A Longitudinal Study Of Bone Development In Children
Funder
National Health and Medical Research Council
Funding Amount
$144,750.00
Summary
Osteoporosis is a major public health problem resulting in 50-75,000 fractures each year in Australia costing the community about 800 million dollars per annum. Bone strength is a risk factor for fractures in both childhood and in later life. Relatively little is known about bone development with the exception of calcium intake and physical activity. This study will follow 500 children from birth in 1988 to 2004 with the aim of understanding the contribution of lifestyle factors to bone developm ....Osteoporosis is a major public health problem resulting in 50-75,000 fractures each year in Australia costing the community about 800 million dollars per annum. Bone strength is a risk factor for fractures in both childhood and in later life. Relatively little is known about bone development with the exception of calcium intake and physical activity. This study will follow 500 children from birth in 1988 to 2004 with the aim of understanding the contribution of lifestyle factors to bone development in this time period.Read moreRead less
Whole Body Vibration For Osteoporosis: Shaking Up Our Treatment Options
Funder
National Health and Medical Research Council
Funding Amount
$961,017.00
Summary
Our aim is to examine the ability of vibration alone and in combination with osteoporosis drugs to reduce hip fracture in postmenopausal women. In Australia, 1 in 2 women >60yrs, will sustain an osteoporotic fracture. Only drugs notably decrease fracture; however none are entirely effective and some patients don’t respond. Whole body vibration has emerged as a potentially effective therapy. A combination of vibration and drugs may enhance the effects of both and revolutionise treatment.
The Role Of The Secreted SVS7 Protein In Bone Homeostasis
Funder
National Health and Medical Research Council
Funding Amount
$605,122.00
Summary
Osteoporosis is a disease characterized by low bone mass and structural deterioration of bone tissue leading to bone fragility and an increased susceptibility to fractures caused by imbalance between cells that are constantly reabsorbing and reforming bone. The cost to society with our aging population and individuals who become disabled by hip fractures could triple by the year 2040.The proposed project studies a novel factor that controls bone mass. Its potential is for therapeutic treatment.
Linkage Disequilibrium Mapping And Positional Cloning For Gene Identification In Osteoporotic Families
Funder
National Health and Medical Research Council
Funding Amount
$330,500.00
Summary
Osteoporosis is a common chronic disease with associated pain, loss of function and death. Patients with the disease commonly experience spine, hip or wrist fracture. Fracture of vertebrae may result in chronic back pain and deformity. Respiratory and digestive health are then also compromised. In comparison, hip fracture may lead to a need for surgery, reduced mobility and institutionalization. In view of improved general community health and increased longevity, the incidence of this disease a ....Osteoporosis is a common chronic disease with associated pain, loss of function and death. Patients with the disease commonly experience spine, hip or wrist fracture. Fracture of vertebrae may result in chronic back pain and deformity. Respiratory and digestive health are then also compromised. In comparison, hip fracture may lead to a need for surgery, reduced mobility and institutionalization. In view of improved general community health and increased longevity, the incidence of this disease and the drain on public health funding will continue to increase substantially in coming years. Presently the cost in Australia is $7.5 billion per annum. Instituting effective prevention strategies is essential. This project aims to contribute to this goal by identifying a major gene(s) involved in disease susceptibility. The term osteoporosis covers a number of heterogeneous syndromes including juvenile osteoporosis, secondary osteoporosis (e.g. corticosteroid induced) and postmenopausal osteoporosis. In this later broad grouping there is evidence of a strong familial association. Previous work has shown that a family history of fracture increases your risk of fracture more than four fold. Furthermore, studies in twins have persistently shown that bone mineral density, the largest risk factor for osteoporotic fracture, is strongly inherited. This data confirms a genetic basis for the disease in some individuals. We have completed two whole genome screen projects and genetic linkage analysis in the families studied has highlighted four regions of the genome, which may harbour genes involved in the disease process. In this project we will fine map these regions and identify the genes that are responsible for the observed linkage. We will use a technique called positional cloning to discover the identity of the gene(s) and will characterise how genetic variation (polymorphism) in the gene leads to reduced bone mass and osteoporotic fracture.Read moreRead less
Long Term Supplementation With Retinyl Palmitate (Vitamin A) And The Risk Of Bone Fractures: A Population Based Study.
Funder
National Health and Medical Research Council
Funding Amount
$167,707.00
Summary
Osteoporosis is a major health problem in Australia and other western industrialised countries where populations are increasingly ageing. In Australia, the number of hip fractures is expected to increase by 36% between 1996 and 2006, owing to the rise in elderly aged 85 years and over. This is in contrast to projections in Europe and North America, where the number of hip fractures are expected to double by 2026 and then stabilise. Clarification of the role of vitamin A in bone health is pertine ....Osteoporosis is a major health problem in Australia and other western industrialised countries where populations are increasingly ageing. In Australia, the number of hip fractures is expected to increase by 36% between 1996 and 2006, owing to the rise in elderly aged 85 years and over. This is in contrast to projections in Europe and North America, where the number of hip fractures are expected to double by 2026 and then stabilise. Clarification of the role of vitamin A in bone health is pertinent, given that the popularity of supplement use has increased markedly in western industrialised countries over the past two decades. Around 37% of the adult population in Australia is thought to take a supplement regularly and figures range from 28% to 54% of adults in the US, with women and adults aged over 49 years being more likely to use supplements. Furthermore, the fortification of food with minerals and vitamins is increasing. For all of these reasons, is it imperative that the role of vitamin A in inducing fractures be clarified. Results from this study will contribute to knowledge about the safety of retinol and beta carotene supplements in relation to bone health, which is especially relevant to people at risk of osteoporosis, and people who take vitamin A supplements. We will also be able to clarify the upper levels of dietary retinol, beta carotene and vitamin A intake beyond which fracture risk increases. Because of the age range of subjects in our study, our results should be applicable to the whole population, not only the elderly or post menopausal. The results of our study will be useful to agencies such as Food Standards Australia and New Zealand which regulates our food supply.Read moreRead less
Extension Of The Calcium Intake Fracture Outcome Study
Funder
National Health and Medical Research Council
Funding Amount
$272,025.00
Summary
Osteoporosis is a largely preventable disease yet 1 in 10 Australians have osteoporosis. Every year >64,000 osteoporotic fractures occur, which is one every 8.1 minutes and women are three times as likely to have the disease than men. The Bone and Calcium Research Group at the University of Western Australia, is studying how to prevent osteoporosis in elderly women. This study is called the Calcium Intake Fracture Outcome Study or CAIFOS. During 1998, 1,500 women were recruited to study wheth ....Osteoporosis is a largely preventable disease yet 1 in 10 Australians have osteoporosis. Every year >64,000 osteoporotic fractures occur, which is one every 8.1 minutes and women are three times as likely to have the disease than men. The Bone and Calcium Research Group at the University of Western Australia, is studying how to prevent osteoporosis in elderly women. This study is called the Calcium Intake Fracture Outcome Study or CAIFOS. During 1998, 1,500 women were recruited to study whether a daily calcium supplement for 5 years helps to prevent fractures compared to a diet without a supplement. To do this only half of the women were given calcium supplements and the other half were given matched placebo tablets. Each year the study participants are reviewed and asked whether or not they have broken any bones and have other measurements to monitor their bone health and overall health. The subjects are entering their last year of treatment and will finish the study during 2003. At this appointment all subjects will undergo the same series of measurements that they had at the beginning of the study to determine whether or not they have fractured any bones, improved their bone mass and overall health during the treatment stage. The main outcome of the study is to determine whether calcium is useful as a supplement to prevent osteoporotic fracture in elderly women. If this study finds that fewer women fractured in the calcium treated group compared to the non treated group, given that both groups were similar to begin with, we can say that supplementation with calcium prevents fractures. Thus, public health messages about preventing osteoporosis will be able to direct the community to take supplements to prevent a disease that creates pain and disability in later life. The advantage of this study is that it is studying other aspects of these women health, so we can determine whether the calcium is safe to use and improves people's quality of life.Read moreRead less
The Effect Of Loading On The Size, Shape And Strength Of Cortical Bone During Different Stages Of Maturation
Funder
National Health and Medical Research Council
Funding Amount
$180,000.00
Summary
Osteoporosis is a condition in which the skeleton becomes fragile and susceptible to fractures. It is a public health problem that affects both men and women over the age of sixty. Although osteoporosis affects the elderly, the most opportune time to prevent osteoporosis may be during childhood. Physical activity is a lifestyle factor known to affect the strength of the skeleton. Bone density is commonly used as a measure of bone strength because it is easily measured and is related to the break ....Osteoporosis is a condition in which the skeleton becomes fragile and susceptible to fractures. It is a public health problem that affects both men and women over the age of sixty. Although osteoporosis affects the elderly, the most opportune time to prevent osteoporosis may be during childhood. Physical activity is a lifestyle factor known to affect the strength of the skeleton. Bone density is commonly used as a measure of bone strength because it is easily measured and is related to the breaking strength of bones. However changes in the shape of bones can also affect bone strength with or without an increase in bone density. Changes in bone shape in response to exercise in children or adults have rarely been investigated, and little is known about the effects of exercise on bone shape during different stages of growth. This study is the first to investigate how exercise during childhood may affect bone strength by changing bone shape. 45 elite female tennis players aged between 6 to 18 years have completed two years of this study. 90 novice and competitive male tennis players aged between 6 to 20 years and 60 healthy age matched controls will be asked to participate in this study. Measurements will be made annually for three years. The bone shape and density of the dominant and non-dominant arms of the players will be compared with the children who don't play tennis - comparisons will also be made between i) different stages of puberty and ii) girls and boys. The findings of this study are important because the lifestyle of children today may predispose them to a greater risk of osteoporosis late in life. Physical activity may be the most important modifiable protective factor against fragile bones in old age. The findings of this study will be the first to provide insight into whether there is a unique time during growth when exercise will result in the greatest increase in bone strength by changing bone shape.Read moreRead less