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A Wireless Electric Nerve-guide For Peripheral Nerve Repair
Funder
National Health and Medical Research Council
Funding Amount
$805,064.00
Summary
We aim to deliver a radical new precision intervention for peripheral nerve repair to improve the lives of people with peripheral nerve damage. Drawing from our recently awarded work on 'electric neural tissue engineering', we will pre-clinically test our invention of a unique clinically-amenable electric nerve-guide (e-nerve-guide), designed to act as a protective nerve conduit and wirelessly electrically-stimulate damaged nerves for their regeneration and restoration of function.
Nerve growth factors are essential to promote nerve regeneration and are potential drugs for the treatment of nervous disorders such as spinal cord injury. Our recent result demonstrates that the precursor form of the nerve growth factor brain derived neurotrophic factor (proBDNF) is detrimental to an injured nervous system and can cause nerve degeneration. This project further investigates the phenomenon in order to promote treatment of spinal cord injury.
Axonal Regeneration And Degeneration: Cellular And Molecular Mechanisms
Funder
National Health and Medical Research Council
Funding Amount
$622,655.00
Summary
Understanding how to repair of nerve damage following a traumatic injury, a vascular accident, or a degenerative condition, is essential to develop novel effective treatments. We have identified, in a simple genetic model system, the molecular mechanisms that allow a transected nerve to be repaired by reattachment of its two separated fragments. This 'axonal fusion' process is a highly promising innovative approach that can be exploited to restore the original neuronal circuit.
The Role Of Proinflammatory Interleukin-17 (IL-17) And IL-17-producing T Cells In Neuropathic Pain
Funder
National Health and Medical Research Council
Funding Amount
$470,051.00
Summary
Peripheral nerve injury often results in persistent and debilitating neuropathic pain. My overall objective is to understand the immunological mechanisms responsible for such pain. I plan to test the hypothesis that the proinflammatory cytokine interleukin-17 promotes neuroinflammation and contributes to increased pain sensitivity after nerve injury. This study promises to enhance our understanding of neuroimmune activation in neuropathic pain and offers new opportunities for pain management.
Membrane Fusion In Axonal Regeneration: Molecules And Mechanisms
Funder
National Health and Medical Research Council
Funding Amount
$461,597.00
Summary
Limited nerve regeneration is the main obstacle for recovery from spinal cord and brain injuries. Understanding the cellular and molecular mechanisms underlying axonal regeneration is an essential step toward the development of novel effective therapies to enhance this process. In this proposal, we use the powerful molecular and genetic tools available for the small nematode worm C. elegans to identify and study axonal regeneration and discover the key molecules involved.
Auditory Nervous System Function After Treatment With Trophic Agents
Funder
National Health and Medical Research Council
Funding Amount
$544,890.00
Summary
Partial or complete deafness affects 11% of Australians and has great personal, social and economic cost . Worldwide, over 60,000 deaf people can now understand spoken language because of the Bionic Ear. However, after prolonged deafness, the nerves in the ear that the BIonic Ear stimulates die, reducing hearing quality. Our research tests whether biological interventions with nerve growth factors and nerve stimulation can preserve nerve function and improve hearing with the Bionic Ear.
Roles Of Brain-derived Neurotrophic Factor In Plasticity Of Injured Sensory Neurons
Funder
National Health and Medical Research Council
Funding Amount
$461,443.00
Summary
The fundamental problem of how nerve cells respond to a nerve injury has long been studied by neuroscientists and clinicians. After a nerve injury outside the brain or spinal cord, ie, in the periphery, some sensory nerve cells die, some regenerate to reconnect to their targets, and some sprout to make abnormal connections. Recent evidence from our lab and others indicates that the nerve sprouting is linked to chronic pain experienced by nerve-injury patients. However, how these changes occur st ....The fundamental problem of how nerve cells respond to a nerve injury has long been studied by neuroscientists and clinicians. After a nerve injury outside the brain or spinal cord, ie, in the periphery, some sensory nerve cells die, some regenerate to reconnect to their targets, and some sprout to make abnormal connections. Recent evidence from our lab and others indicates that the nerve sprouting is linked to chronic pain experienced by nerve-injury patients. However, how these changes occur still remains largely unknown. Our recent studies showed that growth factors, particularly brain-derived neurotrophic factor (BDNF) which is made by the sensory nerve cells, may play important roles in mediating these changes. This proposed project, directly evolved from our recent exciting findings, aims to further examine roles and action mechanisms of BDNF and its relatives in regulating the responses of sensory nerve cells to a nerve injury. We propose that after an injury, BDNF promotes survival of some nerve cells, enhances sensory nerve regeneration in both periphery and spinal cord, and also mediates abnormal nerve sprouting and is involved in neuropathic pain. With strong expertise and powerful tools in hand, we have designed a series of experiments to investigate the roles and action mechanisms of BDNF and its related molecules in these processes. Results from this project will help us understand mechanisms underlying the responses of nerve cells to a nerve injury, and should provide much needed information which would help in designing new methods for enhancing nerve cell survival and nerve regeneration as well as for inhibiting nerve injury-induced chronic pain in nerve-injury patients.Read moreRead less