Nerve And Muscle Excitability In Inclusion Body Myositis
Funder
National Health and Medical Research Council
Funding Amount
$81,294.00
Summary
Our study will use recently developed neurophysiological techniques to study nerve and muscle excitability in sporadic inclusion body myositis, a poorly understood progressive muscle disease for which no effective treatment is known. We will determine whether the electrical properties of nerve and muscle cell membranes are affected and obtain clues as to where this dysfunction may occur. This may aid development of effective therapies through a better understanding of disease mechanisms.
Diabetic neuropathy causes severe disability, with pain, loss of sensation and weakness. The current project will assess the utility of a new testing method, known as nerve excitability assessment, as a method of detecting early changes in nerve function in diabetic patients. If this technique proves useful in detecting early nerve damage, it will assist in the development of therapeutic and preventative treatments for neuropathy in diabetic patients.
Mechanisms Controlling The Excitability Of Corneal Nociceptor Nerve Terminals
Funder
National Health and Medical Research Council
Funding Amount
$364,759.00
Summary
The project uses a new approach that allows, for the first time, electrical activity to be recorded and analysed from the very fine nerve endings of nerves whose activation results in painful sensations. Using this technique the mechanisms by which substances released in damaged and inflamed tissues lead to discharge of action potentials and the sensation of pain will be investigated. In particular the project investigates the role of a population of sodium ion selective pores (channels) that ar ....The project uses a new approach that allows, for the first time, electrical activity to be recorded and analysed from the very fine nerve endings of nerves whose activation results in painful sensations. Using this technique the mechanisms by which substances released in damaged and inflamed tissues lead to discharge of action potentials and the sensation of pain will be investigated. In particular the project investigates the role of a population of sodium ion selective pores (channels) that are uniquely expressed in pain sensing nerves. These channels have been hypothesised to play an important role in determining the behaviour of these nerves. In addition, the project investigates how some substances released in inflamed tissues sensitize pain sensing nerves, causing them to more readily discharge action potentials. This change is the major cause of pain associated with inflammatory diseases such as arthritis. In summary, the proposed project will provide new insight into how pain sensing nerves function. This knowledge is essential for the development of more effective strategies for treating pain resulting from inflamed and damaged tissue.Read moreRead less
Pathophysiology Of Focal Human Entrapment Neuropathy
Funder
National Health and Medical Research Council
Funding Amount
$33,626.00
Summary
Neuropathy patients suffer from tingling, pain, numbness, spontaneous muscle contraction and cramp. The symptoms reflect abnormal activation of the nerve involved. It is known that an external agitation can worsen them, like in carpal tunnel syndrome (CTS). This study aims to investigate if changes in function of axonal membrane ion channel play any part in the symptoms. This will be done by comparing axonal membrane ion channel functions of healthy and CTS patients under external stimuli.
Mechanisms Of Ion Channel Dysfunction In Hereditary And Acquired Neuropathies
Funder
National Health and Medical Research Council
Funding Amount
$404,869.00
Summary
Nerve function is dependent on ion channels, which provide the basis for neurotransmission. Inherited or acquired abnormalities in ion channel function are important in diseases including epilepsy, pain disorders, neuromuscular diseases and toxic neuropathy. This project will use a combination of techniques to study mechanisms underlying nerve dysfunction to compare genetic nerve problems and acquired nerve damage to understand how damage occurs and develop new therapies and diagnostic tests.
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.
The Final Common Channel: Measurement Of Nerve Excitability In Epilepsy.
Funder
National Health and Medical Research Council
Funding Amount
$301,376.00
Summary
Epilepsy may be due to either one single genetic mutation or a combination of several gene-environment interactions, affecting how ion channels function. It is not possible to directly interrogate channels in the living human brain but, because similar channels are found in peripheral nerve, much may be learned about aberrant channel function from peripheral nerve. This project aims to measure peripheral nerve excitability in epilepsy patients, using it as a marker of the final common pathway of ....Epilepsy may be due to either one single genetic mutation or a combination of several gene-environment interactions, affecting how ion channels function. It is not possible to directly interrogate channels in the living human brain but, because similar channels are found in peripheral nerve, much may be learned about aberrant channel function from peripheral nerve. This project aims to measure peripheral nerve excitability in epilepsy patients, using it as a marker of the final common pathway of channel dysfunction.Read moreRead less
Electrophysiological And Neuroanatomical Determination Of Patients With Amyotrophic Lateral Sclerosis With The C9ORF72 Mutation
Funder
National Health and Medical Research Council
Funding Amount
$77,490.00
Summary
Motor Neuron Disease (MND) is a rapidly progressive neurological illness. A new genetic mutation C9ORF72 has recently been identified as a cause of MND. Little is known about the neurophysiological properties in these patients. We wish to better characterise the nerve function in these patients, using a new technique; 'Threshold tracking transcranial magnetic stimulation' and other existing neurophysiological techniques.