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Assessing gene function in the developing vertebrate brain using zebrafish as a model system. Although the vertebrate brain is the most complicated biological tissue it arises from a very simple sheet of cells during embryogenesis. Groups of nerve cells begin to communicate with each other through long interconnecting processes called axons. This project seeks to understand the role of specific genes in this process. This is the first time that the mechanisms controlling the growth of the ear ....Assessing gene function in the developing vertebrate brain using zebrafish as a model system. Although the vertebrate brain is the most complicated biological tissue it arises from a very simple sheet of cells during embryogenesis. Groups of nerve cells begin to communicate with each other through long interconnecting processes called axons. This project seeks to understand the role of specific genes in this process. This is the first time that the mechanisms controlling the growth of the earliest axons in the vertebrate brain will be examined in a living brain. Our analysis is expected to discover genes that are targets for manipulation of axon growth.Read moreRead less
Vulnerability to cocaine use: discovering common mechanisms conserved across animal phyla. Drug abuse costs Australia an estimated $ 20 billion each year, and research is urgently needed to understand how drugs cause long-term behavioural dysfunction. Our research will identify the basal cellular mechanisms underlying drug abuse and addiction, which are likely to be the best targets for therapies to prevent and cure addiction. Our findings are also relevant to other neuropsychiatric disorders r ....Vulnerability to cocaine use: discovering common mechanisms conserved across animal phyla. Drug abuse costs Australia an estimated $ 20 billion each year, and research is urgently needed to understand how drugs cause long-term behavioural dysfunction. Our research will identify the basal cellular mechanisms underlying drug abuse and addiction, which are likely to be the best targets for therapies to prevent and cure addiction. Our findings are also relevant to other neuropsychiatric disorders related to drug abuse (e.g. depression, anxiety) that are on the increase in Australia. Our work will enhance Australia's reputation for neuroscience research, and will provide training for students in neuropharmacology and molecular neurobiology.Read moreRead less
Intercellular RNA Transport In Mammals: Function And Significance
Funder
National Health and Medical Research Council
Funding Amount
$384,213.00
Summary
It was recently discovered that the nucleic acid RNA can turn genes off very potently. This raises the exciting possibility of using RNA as a new treatment for a wide range of diseases including cancer and infection. However, it is not known how RNA enters cells in our body. This project aims to understand how RNA is transported across cell membranes, will explore the significance of this process, and should ultimately assist efforts to develop more effective RNA-based therapeutics.
Colour vision in marsupials. The ability to distinguish colours is a crucial aspect of vision, providing vital data for sexual selection, predator detection and food acquisition. Studies of mammalian colour vision have largely overlooked marsupials. Our recent investigation of spectral sensitivity in two Australian species revealed a colour discrimination capacity beyond that of placentals (excluding primates), implying disparate evolutionary pressures in the two groups. We will provide the fi ....Colour vision in marsupials. The ability to distinguish colours is a crucial aspect of vision, providing vital data for sexual selection, predator detection and food acquisition. Studies of mammalian colour vision have largely overlooked marsupials. Our recent investigation of spectral sensitivity in two Australian species revealed a colour discrimination capacity beyond that of placentals (excluding primates), implying disparate evolutionary pressures in the two groups. We will provide the first comprehensive description of colour vision in marsupials, studying species with differing rhythmicities, habitats and diets. Wavelength sensitivity and molecular structure of retinal visual pigments will be assessed in relation to evolutionary influences and ecological demands.
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Investigating The Synergistic Role Of Brain-derived Neurotrophic Factor (BDNF) And Estradiol On Parvalbumin-mediated Cognitive Function: Relevance To Dementia
Funder
National Health and Medical Research Council
Funding Amount
$589,644.00
Summary
Estrogen-based therapy may improve cognitive functioning in dementia patients. However, more detailed knowledge is required to ensure safe and effective targeted treatment is provided. I propose to examine, in mouse models, the mechanistic functioning of estrogen signalling in key brain regions involved in cognition. Unravelling the way estrogen impart its beneficial effect can lead to the development of effective treatments for dementia and many other devastating neurological diseases.
Long-term Physical Exercise Improves Cognitive Performance Through Neuroimmune Modulation
Funder
National Health and Medical Research Council
Funding Amount
$493,586.00
Summary
This research investigates for how long exercise needs to carried out in order to be beneficial for cognitive function. We choose an animal model which simulates chronic brain inflammation as seen during aging processes of humans and during many inflammatory diseases affecting brain function. This research will unravel the long-term immunomodulatory and protective effects of exercise on brain function as well as the short-term anti-inflammatory effects on brain function.
Decoding Mechanisms Of Brain-intestinal Communication
Funder
National Health and Medical Research Council
Funding Amount
$640,210.00
Summary
Obesity is a worldwide concern to human health. Research into how fat is regulated in the body may provide new therapeutic options. It is not well understood how signals from the brain control fat storage. We have recently identified a gene that is important for the communication between the brain and the intestine in the control of fat levels. As such, our work will enable us to better understand this phenomenon.