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CENTRAL BLOCKADE OF SYMPATHETIC RESPONSES TO EMOTIONAL STRESSORS
Funder
National Health and Medical Research Council
Funding Amount
$313,933.00
Summary
Emotional stress triggers physiological reactions that affect our heart and blood pressure. For people with a weak or failing heart, this can lead to stroke and death. This project explores the effects and the sites of action in the brain of two different types drugs that could potentially reduce or prevent such accidents. Unlike the drugs that are currently in use, these two drugs act directly in the parts of the brain that control cardiovascular responses to emotional stress.
Cardiovascular Responses To Stress And Arousal: Hypothalamic And Brainstem Mechanisms
Funder
National Health and Medical Research Council
Funding Amount
$566,468.00
Summary
Stressful episodes in everyday life cause increases in blood pressure, mainly via activation of nerves that constrict blood vessels and increase heart rate. This in turn increases the risk of heart attacks, strokes, or other cardiovascular diseases. This project aims to identify the brain mechanisms that cause these stress-evoked effects. This knowledge may lead to much more effective ways of minimising stress-evoked responses, and thus reduce the risk of cardiovascular disorders.
The Development Of Glial Cells In The Sympathetic Nervous System
Funder
National Health and Medical Research Council
Funding Amount
$372,025.00
Summary
Nervous system development entails the co-ordinated multiplication of a small number of founder cells to give the millions of cells of the mature nervous system. Each founder generates a many different cell types. Understanding how this is controlled is among the most challenging problems in modern biology. We will show how the development of the two basic cell types (neurons and glia), is controlled in a part of the nervous system that is relatively simple and accessible for manipulation.
Role Of Calcium Channels And Small-conductance Potassium Channels In Myenteric Neurons
Funder
National Health and Medical Research Council
Funding Amount
$131,717.00
Summary
This proposal will investigate the electrical properties of neurons in the wall of the intestine that control movements of the bowel. These neurons form an extensive network that runs the length of the gastrointestinal tract and control mixing and propulsion of food along the intestine. We will determine the basic electrical properties of these neurons and investigate why some of them transmit signals in a continuous manner while others transmit signals intermittently and how these patterns of a ....This proposal will investigate the electrical properties of neurons in the wall of the intestine that control movements of the bowel. These neurons form an extensive network that runs the length of the gastrointestinal tract and control mixing and propulsion of food along the intestine. We will determine the basic electrical properties of these neurons and investigate why some of them transmit signals in a continuous manner while others transmit signals intermittently and how these patterns of activity fit into the overall activity of the gut. This study will build on a large body of data obtained from our laboratory that has shown that some of these neurons act as sensors of the presence-absence of food in the intestine while others send signals to the muscle in the wall of the intestine to either relax or contract it so that the food can be processed properly. By knowing what makes these neurons different from each other we will be able to understand what goes wrong in functional bowel disorders where motility is affected, resulting in pain and discomfort.Read moreRead less