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Understanding Local And Regional Determinants Of EDHF And NO Dysfunction In Resistance Arteries In Diabetes
Funder
National Health and Medical Research Council
Funding Amount
$771,295.00
Summary
Diabetes is a serious and increasing health burden worldwide. Most of the sickness and death associated is due to complications arising in the blood vessels. The inner lining of blood vessels in small arteries uses several different mechanisms to ensure proper blood flow, and in diabetes these are impaired. This study will reveal the cellular mechanisms involved and identify pathways for therapeutic intervention to alleviate the debilitating effects of small artery disease.
Neurotransmission In Functionally Distinct Vasodilator Pathways
Funder
National Health and Medical Research Council
Funding Amount
$809,934.00
Summary
A surprising feature of our body is that there is not enough blood to fully supply all our organs at once. This is why we sometimes faint when we are hot or get cramps when we are exercising. Consequently, the blood vessels change their diameter so that blood can be directed to the organs with greatest demand at any particular time. For example, if the vessel decreases in diameter, less blood flows through it, but if it increases in diameter, more blood flows through it to reach the appropriate ....A surprising feature of our body is that there is not enough blood to fully supply all our organs at once. This is why we sometimes faint when we are hot or get cramps when we are exercising. Consequently, the blood vessels change their diameter so that blood can be directed to the organs with greatest demand at any particular time. For example, if the vessel decreases in diameter, less blood flows through it, but if it increases in diameter, more blood flows through it to reach the appropriate organ. An important function of the nervous system is to control the flow of blood to different organs by changing the diameters of the blood vessels. One set of nerves decreases the diameter of the arteries, and another set of nerves increases the diameter. The nerves do this by releasing special combinations of chemicals when they get a message from the brain to do so. In this project we are especially interested in the nerves which increase blood flow to organs in the head and the pelvis. We will use a wide range of modern methods to find out how these nerves work. In some experiments, we will use sophisticated electrical equipment to measure just how the nerve cells controlling the diameter of the vessels respond to the instructions sent by the brain. In other experiments, we will find out which chemicals the nerves use to make the blood vessels increase in diameter. We also will discover how the various chemicals get released by the nerves at the right times, so that messages from the brain get to the blood vessels as efficiently as possible. One of the special parts of our project is that we will be able to observe directly the connections between the nerve cells and the blood vessels we are studying. Our results will be important for designing new drugs that could help people whose nerves are not working properly, such as in some patients with diabetes or vascular disease.Read moreRead less