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The Neurovascular Territories Of The Human Body: Anatomic Study And Clinical Applications
Funder
National Health and Medical Research Council
Funding Amount
$186,650.00
Summary
A Melways Roadmap of the anatomy of the large and small nerves, arteries and veins of the human body is underway and will take a further three years to complete. The aim is to evolve or modify Reconstructive Plastic Surgery techniques taking tissue from a hidden site and, where possible, include a nerve supply with the transplant so that feeling can be restored to skin flaps and function to transferred muscle. The fundamental objective is to improve the quality of the patients life. We have alre ....A Melways Roadmap of the anatomy of the large and small nerves, arteries and veins of the human body is underway and will take a further three years to complete. The aim is to evolve or modify Reconstructive Plastic Surgery techniques taking tissue from a hidden site and, where possible, include a nerve supply with the transplant so that feeling can be restored to skin flaps and function to transferred muscle. The fundamental objective is to improve the quality of the patients life. We have already completed a thorough examination of the following regions: (i) head and neck (ii) forearm (iii) leg These have received international acclaim and awards. We are currently examining: (i) hand and foot (ii) thigh and buttock. Still to be commenced: (i) arm and shoulder (ii) torso (iii) back. Reconstructive surgery involves the treatment and the reconstruction of defects throughout the whole human body. These defects may arise in any member of the family. With modern reconstructive techniques a problem can often be solved in one operation thus avoiding multiple operations and long periods of hospitalisation which can be devastating to both patient and family. These new techniques nevertheless have demanded a reappraisal of the basic sciences, especially the anatomy of the blood and nerve supply to the potential transplant. This is essential so that they can be designed with not only precision and safety but in such a way that there is minimal disability at the donor site. As well as restoring shape and form, the patient can have tremendous improvement in quality of life and independence if function is also restored. In order to provide function (feeling and movement) a working nerve supply must be included in the reconstruction. Therefore our research must continue to investigate the complex patterns of nerve supply to tissues of the body and correlate this information with the blood supply which is needed to keep the tissue alive.Read moreRead less
Repairing The Injured Spinal Cord: Potential For Human Olfactory Ensheathing Cells
Funder
National Health and Medical Research Council
Funding Amount
$255,990.00
Summary
Spinal cord injury is a major cause of morbidity, particularly among young people involved in road accidents and sports injuries. Finding ways to treat paraplegia is a major goal of neuroscience research. Recently, there has been considerable interest in a special cell found in the olfactory system, the ensheathing cell, which has been found to support regeneration in the spinal cord. Our laboratory has shown that injection of these ensheathing cells into the completely cut spinal cord of adult ....Spinal cord injury is a major cause of morbidity, particularly among young people involved in road accidents and sports injuries. Finding ways to treat paraplegia is a major goal of neuroscience research. Recently, there has been considerable interest in a special cell found in the olfactory system, the ensheathing cell, which has been found to support regeneration in the spinal cord. Our laboratory has shown that injection of these ensheathing cells into the completely cut spinal cord of adult rats can lead to limited functional recovery of hindlimb movement. We used peripheral ensheathing cells because, in humans, such cells can be obtained relatively easily and they reduce problems of tissue rejection. We found that peripheral cells are as effective as previous reports using central ensheathing cells. Our overall aim now is to advance towards the use of olfactory cells in human spinal cord injury, by trialing 3 procedures of clinical relevance: a) to test whether human olfactory cells can also support functional recovery in rats. Human cells can be obtained from the nose by a simple biopsy procedure. If they able to support regeneration, this will open the way for their use in autografts in human paraplegia. b) to delay the time when the olfactory cells are applied to the injured cord. At present, neurosurgeons are not be willing to treat the cord immediately after the injury, because of the risk of causing further damage. This trial is designed to test whether delayed treatment is still effective. c) to test the effectiveness of the cells after bruising, rather than cutting, the cord. Bruising is a more common type of injury in people, hence it is necessary to know how these cells respond to this type of damage. These procedures have been chosen to move our basic research closer to clinical application. Although treatment in humans is still a long way off, these basic studies are essential if conditions like paraplegia are eventually to become treatable.Read moreRead less
ANALYSIS OF KNEE KINEMATICS- An MRI Study Of The Normal, Anterior Cruciate Injured, And Reconstructed Knee.
Funder
National Health and Medical Research Council
Funding Amount
$161,320.00
Summary
People with anterior cruciate ligament damage to the knee tend to develop osteoarthritis in this knee, perhaps because the instability produced by the ligament tear changes the patterns of wear on the joint surfaces. There are several studies using cadaver knees which examine the impact on the joint surfaces of cutting the anterior cruciate ligament, but very little of people moving voluntarily. This study plans to use MRI images of people with a torn cruciate ligament in one knee, and one norma ....People with anterior cruciate ligament damage to the knee tend to develop osteoarthritis in this knee, perhaps because the instability produced by the ligament tear changes the patterns of wear on the joint surfaces. There are several studies using cadaver knees which examine the impact on the joint surfaces of cutting the anterior cruciate ligament, but very little of people moving voluntarily. This study plans to use MRI images of people with a torn cruciate ligament in one knee, and one normal knee. The subjects will simulate a squat inside the MRI magnet against a weighted footplate. The images will be taken at fifteen degree intervals of knee movement. The contact points between the joint surfaces will be measured and compared to the normal knee. This imaging will be repeated after surgical repair, and then again two years later, to assess whether the normal movement pattern has been restored.Read moreRead less
Developing In Vivo Methods Of Adipose Tissue Engineering
Funder
National Health and Medical Research Council
Funding Amount
$374,703.00
Summary
Surgical repair and replacement of soft tissues after tumour removal or to repair existing damage requires fat tissue with a good blood supply. Tissue engineering allows us to create new fat grafts for replacement tissue without causing unnecessary pain or trauma to the patient. We have developed a method for growing fat tissue using a chamber to maintain a space for the tissue to grow into, a blood vessel to supply nutrients to the growing tissue, cells or tissue from the host to encourage cell ....Surgical repair and replacement of soft tissues after tumour removal or to repair existing damage requires fat tissue with a good blood supply. Tissue engineering allows us to create new fat grafts for replacement tissue without causing unnecessary pain or trauma to the patient. We have developed a method for growing fat tissue using a chamber to maintain a space for the tissue to grow into, a blood vessel to supply nutrients to the growing tissue, cells or tissue from the host to encourage cell growth and migration and a matrix or scaffold to support the developing tissue and guide it to form the type of tissue we want (fat, muscle etc). We have shown that the tissue graft may cause fat to grow due to causing an inflammatory reaction and confirmed this by adding a mild inflammatory compound to the chamber instead of a tissue graft. This compound caused the chamber to grow fat tissue. The aim of this project is to determine which of the growth factors or other signaling factors released by the inflammation process is responsible for causing fat tissue production and to identify what cells are being attracted to the chamber to help grow the fat, so that we can further improve our engineering of fat tissue. Understanding the pathways which mediate or stimulate fat growth will provide new opportunities for improving fat growth and allow the engineering of larger fat grafts in larger animals and eventually human clinical application. Beyond that, inflammation is involved in many disease processes (eg. obesity, metabolic syndrome, diabetes, cancer), and these fields of study will also benefit from our research.Read moreRead less
Relationship Of The Anabolic And Catabolic Responses In Healing A Critical Sized Defect In Rats
Funder
National Health and Medical Research Council
Funding Amount
$329,750.00
Summary
Delayed bone healing after trauma is a large clinical problem. Figures suggest up to 60,000 fractures result in a delay in healing in Australia per year. Bone healing can also fail to occur in other circumstances, such as after an operation. Research effort into new approaches to solving these problems is clearly justified. We believe that in some situations, bone healing fails due to the body's healing response, the anabolic response, being insufficient. In some other situations, the body's bon ....Delayed bone healing after trauma is a large clinical problem. Figures suggest up to 60,000 fractures result in a delay in healing in Australia per year. Bone healing can also fail to occur in other circumstances, such as after an operation. Research effort into new approaches to solving these problems is clearly justified. We believe that in some situations, bone healing fails due to the body's healing response, the anabolic response, being insufficient. In some other situations, the body's bone resorbing response, the catabolic response, may be too high and prevent healing from occurring. In normal bone healing, there is a balance between the anabolic and catabolic response. In disordered bone healing, these responses are out of balance. Several reasonably new treatments are available which can increase the anabolic response or decrease the catabolic response. We have preliminary results showing that with these agents we can bring these elements into better control, and thus drive bone healing. We have optimised an animal model where both the anabolic and catabolic responses can be controlled. In this project, we explore the optimisation of the timing and magnitude of anabolic and catabolic responses in bone healing.Read moreRead less
Young People With Old Knees: Knee Ligament Reconstruction And Early Joint Changes
Funder
National Health and Medical Research Council
Funding Amount
$782,727.00
Summary
Individuals who have undergone a knee reconstruction are at increased risk of knee osteoarthritis - 'younger people with older knees'. This may be partly due to increased knee load. This study aims to investigate whether muscle strength and activation as well as walking patterns influence changes in the knee joint structure as measured on magnetic resonance imaging. This may lead to rehabilitation strategies to address these factors so as to prevent the premature onset of knee osteoarthritis.