Investigation Of Neural Mechanisms Of 670 And 830nm Laser Acupuncture In Pain Relief, Using Rat
Funder
National Health and Medical Research Council
Funding Amount
$326,207.00
Summary
Background Chronic pain is common and costs $10 billion dollars per year in Australia. Drug therapies are widely used but serious side effects limit use. Patients actively seek non-drug treatments and laser acupuncture is one of the most commonly sought therapies for chronic pain, however, how it works is not well understood. Our previous work Researchers propose that laser acupuncture reduces pain by direct effects on nerves, altering how pain signals are transmitted to the brain. To investigat ....Background Chronic pain is common and costs $10 billion dollars per year in Australia. Drug therapies are widely used but serious side effects limit use. Patients actively seek non-drug treatments and laser acupuncture is one of the most commonly sought therapies for chronic pain, however, how it works is not well understood. Our previous work Researchers propose that laser acupuncture reduces pain by direct effects on nerves, altering how pain signals are transmitted to the brain. To investigate this we (CI A and CI B) previously undertook a study of infrared laser on nerve cell cultures. This followed on from a positive clinical study with the same laser wavelength in the treatment of neck pain, undertaken by CI B. We established that laser temporarily interrupts the nerve transport system, which is made up of a series of minute tubes, called microtubules. These act as a “monorail” system for transport of mitochondria, which provide energy for all nerve functions. We propose that temporary interruption of this system, called fast axonal transport, disrupts the conduction of pain signals along the nerve, resulting in pain relief. Important unanswered questions The mechanism by which 830nm laser acupuncture relieves pain clinically remains poorly understood. For its acceptance into mainstream clinical practice it is important to determine the effect of laser on the peripheral nerves and in particular the pain carrying fibres. We know from an earlier study that a single exposure causes significant but reversible changes in pain fibres including axonal microtubule disruption, decrease in mitochondrial membrane potential and block of fast axonal flow. These events would result in conduction failure. The question is whether the repeated irradiations, comparable to those delivered clinically result in the same changes. This would provide a scientific basis for understanding the clinical effectiveness of laser acupuncture. We also do not know if 670nm laser acupuncture would act in the same way. There is evidence that this may be more effective so that this remains another important unanswered question. Further, there is no evidence regarding which wavelength would be cost and time effective as it is desirable to deliver lower dose. We need to determine the most effective dose and wavelength so that clinical trials could be carried out as was done for the trials by CIB (Chow and Barnsley, 2006).Read moreRead less
Developing A Novel Glaucoma Surgery For Clinical Use And Commercialisation
Funder
National Health and Medical Research Council
Funding Amount
$565,893.00
Summary
Glaucoma is a potentially blinding eye condition that affects more than 60 million people. The greatest risk factor in glaucoma is high intraocular pressure. Surgical treatment for glaucoma seeks to lower the pressure inside the eye by increasing the drainage of fluid from the eye. There are numerous techniques available but all have risks of complications. This grant seeks to develop a novel approach to the problem using intra-ocular delivery of laser pulses to cut a drainage channel.
Developing A New Glaucoma Surgery Using Precision Ablation Of The Trabecular Meshwork And Inner Wall Of Schlemm’s Canal
Funder
National Health and Medical Research Council
Funding Amount
$653,606.00
Summary
Glaucoma is a major sight threatening disease in our community, affecting an estimated 60 million people worldwide. This project investigates a new laser based method for reducing intraocular pressure, the major risk factor in glaucoma. The novel approach is to create a selectable number of drainage channels for excess fluid in the eye to drain away, thereby restoring normal intraocular pressure.
Understanding The Roles Of Dendritic Domains In Neuronal Function
Funder
National Health and Medical Research Council
Funding Amount
$491,509.00
Summary
We aim to find cellular basis to cognitive function and dysfunction by understanding the input/output characterstics of individual neurons. Since neurons are fundamental computational units in the brain, we aim to understand how synaptic inputs to different dendritic regions are processed prompting the neuron to fire an output. We also aim to seek distinct roles of certain dendritic branches in gating sensory inputs onto the neuron.
The rapid interactions of circulating human blood platelets is critical to prevent bleeding, but can cause thrombotic diseases (heart attack, stroke). These highly regulated interactions involve specific adhesive proteins. Our studies will define factors regulating platelet interactions. Imaging the thrombotic process will quantify platelet function at an unprecedented resolution and we have a panel of new candidate reagents that will be assessed for antithrombotic potential.
Application Of Sutureless Technology 'SurgiLux' For Dura Mater Repair: A Proof Of Concept Study
Funder
National Health and Medical Research Council
Funding Amount
$213,125.00
Summary
A unique technology that combines biomaterials and lasers to effectively close and seal wounds could replace sutures in delicate surgery close to the brain. Wound closure in the cranium is still reliant upon sutures or 'stitches' and these have complications; a major one being leakage of cerebro spinal fluid (CSF). The application of 'SurgiLux' technology will both close and seal these wounds quickly and easily, with significant health and economic benefits.