Wnt Signaling In Dopaminergic Neuronal Connectivity
Funder
National Health and Medical Research Council
Funding Amount
$387,489.00
Summary
During development, the brain establishes intricate and precise connections. In several brain pathways, little is known about the processes regulating this connectivity. Furthermore, it is likely that the same processes will be required to repair the injured- diseased brain. This project builds on our preliminary data, that Wnt proteins are important regulators of developing dopamine pathways, and has implications for dopamine disorders including Parkinson’s disease and addiction.
Wnt Signaling In Dopaminergic Neuronal Connectivity
Funder
National Health and Medical Research Council
Funding Amount
$564,721.00
Summary
A major obstacle in repairing the injured or diseased brain is inducing axons (nerve cell processes) to make the appropriate connections. This is especially true following cell replacement therapy (CRT) in Parkinson's disease (PD). We will examine the processes inducing axons in the dopamine pathways to grow. We hypothesize that Wnt signaling plays and important role and that therapeutic introduction of Wnt is required to repair the dopamine pathways following CRT in PD.
IDENTIFICATION OF BRAIN NEURONS INVOLVED IN THE CARDIOVASCULAR RESPONSE TO FEAR AND FLIGHT
Funder
National Health and Medical Research Council
Funding Amount
$400,247.00
Summary
The circulatory system of the body acts in concert with the respiratory system to distribute oxygenated blood to the brain and other organs and tissues of the body. Control of blood pressure and heart rate is achieved largely through the actions of the central nervous system on effector organs and tissues such as the heart and blood vessels. This control is exerted through the actions of nerves in the body which affect the rate and force of contraction of the heart and the diameter of blood vess ....The circulatory system of the body acts in concert with the respiratory system to distribute oxygenated blood to the brain and other organs and tissues of the body. Control of blood pressure and heart rate is achieved largely through the actions of the central nervous system on effector organs and tissues such as the heart and blood vessels. This control is exerted through the actions of nerves in the body which affect the rate and force of contraction of the heart and the diameter of blood vessels which restrict the flow of blood to the tissues. These nerves, in turn, are under the control of brain cells or neurons which are located in the brainstem. Blood pressure-controlling neurons, acting upon information they receive from pressure sensors in the major blood vessels in the chest cavity, can alter their activity so that blood pressure is maintained within normal limits. Our laboratory has been examining the properties of these blood pressure-controlling neurons by recording their minute electrical discharges and by studying other brain regions which are able to influence them. In this study, we will use newly-developed procedures which will allow us to identify the precise locations of these neurons in the brain, to study which neurotransmitters (chemicals released by neurons which are used to communicate with other neurons) they use, as well as to identify other regions of the brain they connect with and influence. The major significance of this work will be that new brain circuits which transmit information about the status of the cardiovascular system to other areas of the brain will be identified. Our understanding of, and the development of new treatments for, cardiovascular diseases such as high blood pressure and heart failure are critically dependent on advancing our understanding of the nervous system.Read moreRead less
Mechanisms Underlying Generation Of Febrile Seizures In Mouse Models Of Human Familial Epilepsy
Funder
National Health and Medical Research Council
Funding Amount
$304,559.00
Summary
Febrile Seizures (FS) affect 3% of children aged 0.5 - 6 yrs and have been proposed as an indicator of severe forms of adult generalized epilepsy. Mechanisms underlying FS generation are unknown although studies of Australian families suffering from epilepsy have linked 2 genes to FS. We have generated mice expressing these 2 genes. Aims and Outcomes: to investigate events triggering FS which will provide important insights into why FS occurs in children. (NB: CIA 2 yr career interruption)