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An FMRI Analysis Of The Functional Organization Within The Brain Of Experimental Superficial And Deep Orofacial Pain
Funder
National Health and Medical Research Council
Funding Amount
$307,526.00
Summary
This project will investigate how the human brain processes a number of important aspects of human jaw muscle pain that are clinically relevant but poorly understood. For example, we do not understand why jaw muscle pain has such different behavioural effects to skin pain. Jaw muscle pain is associated with a significant emotional component not seen in with skin pains. Also, skin pain usually has a sharp or burning quality, is well-localized and is readily treated, while jaw muscle pain is a dee ....This project will investigate how the human brain processes a number of important aspects of human jaw muscle pain that are clinically relevant but poorly understood. For example, we do not understand why jaw muscle pain has such different behavioural effects to skin pain. Jaw muscle pain is associated with a significant emotional component not seen in with skin pains. Also, skin pain usually has a sharp or burning quality, is well-localized and is readily treated, while jaw muscle pain is a deep pain that has a dull, aching quality that may be referred to related sites of the face, head and neck. It is also not known why jaw muscle pain is more common in females in comparison to males. Chronic jaw muscle pain is a major symptom of patients with Temporomandibular Disorders, the most common form of non-dental orofacial pain and that involves pain in or about the jaw joint and-or jaw muscles, and often limitation of jaw movement. Chronic jaw muscle pain can have a severe effect on quality of life but its diagnosis and management is difficult. Despite the widespread prevalence of chronic orofacial pains, we have little information on the central processing of chronic human orofacial pain. This proposal will improve our fundamental understanding of how jaw muscle pain is processed in the brain. The way that the central nervous system processes and represents jaw muscle pain will help explain why these pains present differently in the clinic and should provide important information on the differences between females and males in the representation of jaw muscle pain. This information on the central processing of chronic orofacial pain is crucial to inform the direction of novel or specific management strategies. Our long-term goal is to improve the diagnosis and management of patients with Temporomandibular Disorders, and the present application represents a major new direction of research.Read moreRead less
I am a physiologist-pharmacologist examining fundamental mechanisms of chronic inflammatory disease. By defining these mechanisms, I seek to discover the underlying cause of disease and to identify novel strategies for diagnosis and therapy of chronic diseases that are worldwide causes of morbidity and mortality.
Understanding The Brain In The Transition From Acute To Chronic Low Back Pain
Funder
National Health and Medical Research Council
Funding Amount
$107,049.00
Summary
A critical question in treating low back pain (LBP) is why some people get better after hurting their back while others do not. Physiological mechanisms, such as brain plasticity and central sensitisation, are believed to underpin the transition to persistent pain. This is the first study to evaluate these mechanisms longitudinally and their relationship with LBP outcomes. The result of this research will provide better understanding of pain mechanisms of LBP and assist to develop novel therapy.
Aberrant Nerve Excitability: An In-depth Study Of HCN Channel Activity In Neurological Disorders (epilepsy And Chronic Neuropathic Pain).
Funder
National Health and Medical Research Council
Funding Amount
$205,315.00
Summary
Chronic neuropathic pain and epilepsy carry a high burden of disease, and have a major impact on health resources. Abnormal nerve excitability is implicated in both conditions. This study evaluates the use of a non-invasive test applied to peripheral nerve in the measurement of nerve excitability in neuropathic pain and epilepsy. The aim is to establish a sensitive biomarker of disease in assessment and diagnosis of patients, and to help direct therapy and measure response to treatment.
Delayed Neuronal Death After Peripheral Nerve And Spinal Cord Injury
Funder
National Health and Medical Research Council
Funding Amount
$457,267.00
Summary
After injury to the nervous system, even under optimal conditions for regeneration of broken nerve processes (axons), there is little chance of normal function being restored because few regrowing axons will find appropriate cells to connect with. The time taken for many regrowing axons to reach their targets can be so long that both the axons and their targets lose the ability to recognize each other. Equally importantly, some damaged nerve cells die over the months that follow an injury. This ....After injury to the nervous system, even under optimal conditions for regeneration of broken nerve processes (axons), there is little chance of normal function being restored because few regrowing axons will find appropriate cells to connect with. The time taken for many regrowing axons to reach their targets can be so long that both the axons and their targets lose the ability to recognize each other. Equally importantly, some damaged nerve cells die over the months that follow an injury. This slow loss of nerve cells can lead to progressive and ongoing deterioration. Given recent advances in our understanding of how to improve axon regeneration, the degree of functional recovery could be disappointing unless we know more about how to prevent these neurones from dying. This project will use rats as experimental animals to try to understand which types of nerve cells are likely to die or survive after injury to peripheral nerve trunks or to the spinal cord. We will investigate two regions of the nervous system that are commonly involved in injuries in people. After injuries to limb nerves, people lose sensation and movement and can unpredictably develop chronic conditions such as neuropathic pain (unrelated to the damage and often occurring spontaneously) as well as poor blood flow and wound healing in the hands-feet. After most injuries to the spinal cord, the lower part of the cord beyond the injury (in particular the lumbosacral cord controlling hindlimb movement and sensation and the function of bladder, bowel and sexual organs) is often disconnected from the brain leading to paralysis and disrupted control of pelvic organ function. We will identify and study specific populations of nerve cells with sensory (mainly pain-sensing) functions and four identified groups of nerve cells in the lumbosacral cord that project to the brain. Once we know which nerve cells do not survive, we will search for the likely causes of their death and ways to prevent it.Read moreRead less