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Fracture Associated Premature Mortality; An International Consortium
Funder
National Health and Medical Research Council
Funding Amount
$579,807.00
Summary
Following an osteoporotic fracture there is an increased premature mortality compared with someone who has not fractured. There is also evidence that anti-osteoporosis medication reduces this premature mortality. This study will determine the size of the fracture-mortality relationship and the effect of treatment on this mortality for different fracture types and in different populations by integrating data from multiple international epidemiology studies of osteoporosis.
Functional Variants Of RUNX2 Related To Bone Density
Funder
National Health and Medical Research Council
Funding Amount
$451,938.00
Summary
Bone density and osteoporosis have a genetic component. Identifying genes that are involved in determining bone density may permit advances in controlling osteoporosis. We have identified a variant in a gene called RUNX2 that is related to bone density high enough to protect individuals four fold against Colle's fracture, the common wrist fracture seen in women. This variant is highly correlated with changes in the second promoter of RUNX2, such that the high bone density form appears to be the ....Bone density and osteoporosis have a genetic component. Identifying genes that are involved in determining bone density may permit advances in controlling osteoporosis. We have identified a variant in a gene called RUNX2 that is related to bone density high enough to protect individuals four fold against Colle's fracture, the common wrist fracture seen in women. This variant is highly correlated with changes in the second promoter of RUNX2, such that the high bone density form appears to be the ancestral form of this gene. We now need to know how this change in this promoter alters bone density and we are following up on observations that other important transcription factors bind to the variable site in the promoter. Furthermore, we have assembled a large collection of samples from people who have had extensive measures of bone density and arthritis in order to accurately measure the impact of this gene on bone density, osteoarthritis and bone fracture. In addition, some people with bone fracture at the hip, or low bone density, have mutations in this gene. Such mutations in a region called the Q-repeat are rather common, 1-200 people are carriers. Our data show that these mutant proteins are not as efficient at their task of regulating other genes. We now want to know how this occurs in a molecular sense, since it is known that the Runx2 protein resides in the nucleus of the cell and interacts with many other regulators. This part of the project is being done with one of the world experts on gene regulation in bone cells. Since RUNX2 is a master regulator of the cells that make bone, this gives hope that it may be possible to alter bone formation through this master regulator.Read moreRead less
Pathogen Sensing In Autoinflammatory And Autoimmune Disease
Funder
National Health and Medical Research Council
Funding Amount
$340,724.00
Summary
Mammals have evolved an array of mechanisms to sense microbes. These immune sentinels must distinguish self from non-self to activate an immune response. The initiation, amplification and quenching of an immune response is a carefully orchestrated process that eliminates invading pathogens while minimising collateral damage to host tissues. This research focuses on proteins that restrict immune responses to prevent inflammatory diseases such as rheumatoid arthritis and psoriasis.