The majority of stroke results from focal brain infarction, followed by substantial secondary excitotoxic damage in the surrounding areas. Tau has been shown to contribute to excitotoxicity and neurodegeneration in mouse models of Alzheimer’s disease (AD). Preliminary data show that tau reduction also protects against excitotoxic damage after experimental stroke. We aim to dissect the molecular mechanisms of stroke using a tau-deficient mouse model.
Problems in learning, memory and other complex mental processes are common to many brain disorders. This project will study the impact of mutations on a family of genes reported in autism and schizophrenia, on complex cognitive behaviours using novel behavioural technologies. This will not only shed fundamental insights into the specific mental processes regulated by these genes and their role in disease, but importantly provide novel targets for the development of therapies.
New Projection Neurons Are Added To The Brain Throughout Life – Identifying Their Source And Function.
Funder
National Health and Medical Research Council
Funding Amount
$505,991.00
Summary
Scientists aim to use our body’s own stem cells to make new nerve cells for brain repair. There are two major types of nerve cell: long range and short range; and until now we did not know how to make new long range nerves. I recently discovered that a special type of brain stem cell, the OPC, makes new long range nerves throughout life. We are building on this discovery by trying to understand the signals that control this process in order to direct OPCs towards nerve regeneration.
Slowing Progression Of Alzheimer’s Disease By Modulating The Kynurenine Pathway
Funder
National Health and Medical Research Council
Funding Amount
$578,460.00
Summary
Chronic inflammation in the brain in known to be a factor in the progression of Alzheimer's disease. We are exploring if blocking a particular enzyme in a biochemical pathway involved in inflammation, can improve symptoms, or slow progression, of the disease in animal models of AD. If results are as expected, our proposal has the potential to generate a new a therapy for AD.
Myelin Remodelling: A Novel Form Of Neural Plasticity
Funder
National Health and Medical Research Council
Funding Amount
$605,849.00
Summary
Myelin is the insulation of the central nervous system (CNS). We have demonstrated that CNS insulation is not fixed. It changes throughout life. This project aims to find out why this happens. In particular we will investigate the role of dynamic insulation in learning and memory, and examine the role of nervous system activity in promoting the addition of new insulation. This research will provide valuable insight into multiple sclerosis, Alzheimer's dementia and mental health disorders.
How are memories stored in the brain? We know much about the brain regions involved in memory storage but we know little or nothing about how individual memories are represented and stored within those brain areas. The purpose of this project is to label and manipulate the specific subsets of brain cells that store individual memories. We will label memory-bearing cells in multiple brain regions and then ask how the connections between those cells encode learned information in the brain.
Assessing The Efficacy Of Safe And Simple Neuroprotective Treatments For Chronic Degenerative Conditions Of The Central Nervous System
Funder
National Health and Medical Research Council
Funding Amount
$311,860.00
Summary
Current treatments for age-related diseases of the central nervous system (CNS) are limited. We have shown in animal models of acute CNS degenerations that treatment with saffron or low energy infrared light is strongly protective. This project will determine if these treatments prevent CNS damage and dysfunction in animal models of chronic degenerations and add to knowledge of how these treatments work. This research should lay the foundation for testing these novel treatments in humans.
Mapping The Neural Circuits Involved In Appetite And Feeding Behaviour
Funder
National Health and Medical Research Council
Funding Amount
$404,892.00
Summary
My research project involves deconstructing the neural circuitry underlying feeding behaviour using innovative genetically-based methods. I aim to identify and characterise the major projections of the oxytocin-expressing neurons in the paraventricular hypothalamic nucleus, which have recently been identified as critical in the feeding neurocircuitry. This emerging field of research is predicted to transform our understanding and treatment of disorders such as obesity and anorexia nervosa.
Targeting Autism With Macrocephaly Using Mechanism Based Therapeutics
Funder
National Health and Medical Research Council
Funding Amount
$831,652.00
Summary
Autism affects a large number of children in our community and currently there is a lack of any medication to treat its core pathology. In this grant we will study the underlying biochemical changes in the brain that result in autism through the development of a new mouse model of the disorder. This mouse model will then be used test drugs to identify therapeutic targets for the treatment of autism.