Investigating Action Potential Initiation And Propagation In Neurons Using Voltage-sensitive Dyes
Funder
National Health and Medical Research Council
Funding Amount
$317,076.00
Summary
Nerve impulses, or action potentials, are the fundamental electrical signals used by the nervous system for communication. Critical to an understanding of neuronal function is the knowledge of where these events are initiated and how they propagate. Furthermore, this knowledge is required for understanding what goes wrong under conditions where there is a disturbance in neuronal communication, as occurs in many neurological disorders such as multiple sclerosis and epilepsy.
Characterisation Of Neuregulin-2 Function In The Nervous System.
Funder
National Health and Medical Research Council
Funding Amount
$183,250.00
Summary
The Neuregulins (NRG's) are a family of four structurally related growth factors expressed in the developing and adult brain. NRG-1 is essential for life and has been implicated in the development and maintenance of both neurons and glial cells, as well as being essential for normal heart formation. NRG-2 was identified by us and others as being closely related to NRG-1 and, like NRG-1, it is also expressed predominantly in neuronal populations of the brain. One striking feature of NRG-2 express ....The Neuregulins (NRG's) are a family of four structurally related growth factors expressed in the developing and adult brain. NRG-1 is essential for life and has been implicated in the development and maintenance of both neurons and glial cells, as well as being essential for normal heart formation. NRG-2 was identified by us and others as being closely related to NRG-1 and, like NRG-1, it is also expressed predominantly in neuronal populations of the brain. One striking feature of NRG-2 expression in the adult brain is its localisation to regions associated with neurogenesis (renewal of neurons from stem cell precursors). Outside the nervous system Neuregulin-2 can stimulate the proliferation and differentiation of epithelial cells. However, little is known about the activity of Neuregulin-2 in the brain. This grant proposal aims to study the biological functions of Neuregulin-2 in the developing and adult central nervous system. The experimental design is based on characterisation of mice that do not contain the Neuregulin-2 gene. We will also look specifically at the action of Neuregulin-2 on discrete populations of neuronal cells, grown in tissue culture. We expect that these studies will provide valuable insight into the role of NRG-2 in the brain and that they will be the basis for defining the mechanisms by which NRG-2 activity differs to that of the NRG family members. By studying factors that are involved in the development of the nervous system it is hoped that valuable insights will be made regarding repair and regeneration in the adult brain.Read moreRead less