Developing Novel Neuroreceptor And Channel Therapies For Pain And Addiction
Funder
National Health and Medical Research Council
Funding Amount
$808,375.00
Summary
Chronic pain is a growing and poorly treated global health burden. There is a great need for novel pain therapeutics. We are discovering novel drug targets in pain pathways in the nervous system and new therapeutic molecules that selectively block information flow in pain nerves. Strong pain relieving drugs like morphine also lose their effectiveness after long periods of use. We are finding mechanisms responsible for this thereby providing a rational basis for development of better opioids and ....Chronic pain is a growing and poorly treated global health burden. There is a great need for novel pain therapeutics. We are discovering novel drug targets in pain pathways in the nervous system and new therapeutic molecules that selectively block information flow in pain nerves. Strong pain relieving drugs like morphine also lose their effectiveness after long periods of use. We are finding mechanisms responsible for this thereby providing a rational basis for development of better opioids and pain treatments.Read moreRead less
Determining Patterns Of Cessation And Relapse In A Cohort Of People Who Inject Drugs
Funder
National Health and Medical Research Council
Funding Amount
$1,189,791.00
Summary
Harms related to injecting drug use represent the bulk of the burden attributable to illicit drugs in Australia. In this study we will determine rates of long term cessation of injecting drug use, and relapse, and key drivers of these outcomes such as drug treatment or housing provision. Findings will inform policy and practice around injecting drug use in Australia over the coming decade.
Mental Health And Substance Use: Understanding, Preventing And Treating
Funder
National Health and Medical Research Council
Funding Amount
$268,065.00
Summary
Mental & substance use disorders account for more years of disability than any other disorder. In young adults the top 10 causes of burden of disease are dominated by mental and substance use disorders. I lead an international program of research in the combined areas of mental health & substance abuse, and am recognised as a leading international expert. My research aims to increase our understanding of drug & alcohol and mental disorders, prevent where possible and improve treatment responses.
A Double Blind Placebo Randomised Controlled Trial Of Sativex In The Management Of Cannabis Withdrawal
Funder
National Health and Medical Research Council
Funding Amount
$245,626.00
Summary
Cannabis is the most commonly used illicit drug in Australia with an estimated 300,000 individuals with cannabis use disorder in Australia. Treatment presentations for cannabis have more than doubled over the last 10 years, yet there is still no medication to help with withdrawal. This proposal will test pure active ingredients in cannabis in a preparation sprayed in the mouth, to wean individuals from cannabis. This will assist them to complete cannabis withdrawal.
Ethanol abuse, alcoholism and the medical complications of excessive drinking are now major health problems worldwide. The alcohol dependence syndrome is characterised by tolerance and physical dependence ( the presence of a withdrawal syndrome). Ethanol withdrawal, in addition, to being a health hazard in itself, can act as a negative reinforcer to promote continued ethanol consumption. Alcohol dependence can be considered to result from adaptive changes produced by the chronic presence of etha ....Ethanol abuse, alcoholism and the medical complications of excessive drinking are now major health problems worldwide. The alcohol dependence syndrome is characterised by tolerance and physical dependence ( the presence of a withdrawal syndrome). Ethanol withdrawal, in addition, to being a health hazard in itself, can act as a negative reinforcer to promote continued ethanol consumption. Alcohol dependence can be considered to result from adaptive changes produced by the chronic presence of ethanol in the brain. In this research programme we will learn more about the adaptive changes in the NMDA receptors, the major excitatory receptors in the brain. Current psychopharmacologic management of human alcoholism is limited and suboptimal. We will explore the efficacy of drugs to control behaviours and withdrawal-induced brain cell death. Effective treatment of the syndrome is crucial since withdrawal induces changes, which increases the severity of subsequent withdrawal episodes and its associated brain damage. The outcomes of this research will be a better understand of the underlying changes involved in ethanol dependence and better therapies to ameliorate the withdrawal syndrome.Read moreRead less
Human Muscle Stretch Reflexes: The Effects Of Stimulus Properties, Muscle State And Subject Intention
Funder
National Health and Medical Research Council
Funding Amount
$170,604.00
Summary
The best known muscle reflex is the tendon jerk, which is usually evoked by tapping the muscle tendon with a small hammer. This tap imposes a very rapid stretch on the muscle, which produces a stretch reflex. Different stretch responses, however, can be observed to slow or fast stretches, or to vibration of muscle. Normally, when the muscles of a relaxed person are stretched, no active response is observed. However, when the person is engaged in a task and contracting their muscles, then stretch ....The best known muscle reflex is the tendon jerk, which is usually evoked by tapping the muscle tendon with a small hammer. This tap imposes a very rapid stretch on the muscle, which produces a stretch reflex. Different stretch responses, however, can be observed to slow or fast stretches, or to vibration of muscle. Normally, when the muscles of a relaxed person are stretched, no active response is observed. However, when the person is engaged in a task and contracting their muscles, then stretch modulates the muscle activity such that an increase in contraction of the muscle opposes the stretch and defends the position of the joint against the external disturbance. This is the everyday situation in which stretch reflexes operate. Despite extensive investigation for over a hundred years, there is still no consensus among researchers about the behaviour of stretch reflexes nor about their role in the control of movement. Even the demarcation of reflex from voluntary muscle activity is not always certain. One of the outstanding features of stretch reflexes is the variability of their behaviour, which depends on the particular muscle involved, its level of contraction, the type of stretch and the task in which the person is engaged. This variability has made it difficult for researchers to determine the role of reflexes in the control of movement. In order to study stretch reflex behaviour in human subjects, we will measure the electrical activity of elbow muscles, the elbow position and the force generated at the joint under a variety of conditions. A series of five experiments will investigate specific unresolved issues such as the effect of subject intention on the modulation of muscle activity and how altered modulation of muscle activity may change the stiffness of our limbs. The objective of the experimental series is to fill in important gaps in the picture of the behaviour of the stretch reflex.Read moreRead less