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Detection Of Susceptibility Genes For Multiple Sclerosis
Funder
National Health and Medical Research Council
Funding Amount
$589,073.00
Summary
Multiple sclerosis is one of the most common chronic diseases of the nervous system. It usually starts in young adulthood and continues with episodes of severe disability from which partial recovery leads in many patients to difficulties with walking, balance, speech, bladder control and other neurologic functions. The disease inflicts a severe burden on both patients and the community. There is currently no preventive treatment and therapy is expensive (interferon at $20,000 p.a.) and of limite ....Multiple sclerosis is one of the most common chronic diseases of the nervous system. It usually starts in young adulthood and continues with episodes of severe disability from which partial recovery leads in many patients to difficulties with walking, balance, speech, bladder control and other neurologic functions. The disease inflicts a severe burden on both patients and the community. There is currently no preventive treatment and therapy is expensive (interferon at $20,000 p.a.) and of limited benefit in stopping further damage and of no benefit in reversing existing damage. New treatments will come through a full understanding of how the immune system attacks the brain to cause MS. There is a strong inherited component in MS and the discovery of the genes responsible should speed up the quest to understand the cause of the disease. The proposed studies involve international collaboration co-ordinated from Cambridge University, UK, in which the entire human genome will be screened looking for the MS genes using world s best available technology. Funding of this grant will allow Australia an equal seat at the table for this collaboration involving 17 countries. No individual country can recruit enough patients and hence this international effort is essential. It is expected that the understanding of the cause of MS will lead to new treatments that are effective and with low side effects.Read moreRead less
Nutrient And Hormone Delivery To Muscle: Interactions Between Insulin And Exercise
Funder
National Health and Medical Research Council
Funding Amount
$304,375.00
Summary
Exercise is known to be beneficial in the treatment and prevention of Type 2 diabetes and in particular muscle insulin resistance. Also, exercise and insulin share similar acute actions on muscle. Firstly, muscle contraction has a well established action to increase glucose uptake, and secondly, both muscle contraction and insulin act to increase capillary recruitment. This latter phenomenon is thought to enhance nutrient delivery and waste product removal. There is evidence that the increase in ....Exercise is known to be beneficial in the treatment and prevention of Type 2 diabetes and in particular muscle insulin resistance. Also, exercise and insulin share similar acute actions on muscle. Firstly, muscle contraction has a well established action to increase glucose uptake, and secondly, both muscle contraction and insulin act to increase capillary recruitment. This latter phenomenon is thought to enhance nutrient delivery and waste product removal. There is evidence that the increase in capillary flow due to muscle contraction is accompanied by increases in total blood flow. For insulin action we now have preliminary data to indicate that capillary recruitment occurs within a 5-10 min application of a physiologic dose of insulin independent of a change in total blood flow suggesting a redistribution of flow. Muscle contraction also increases capillary recruitment and it raises the question of whether similar mechanisms underlie insulin- and muscle contraction-induced capillary recruitment or whether there are distinct and complementary pathways. In this project we plan to define the mechanisms responsible for contraction- and insulin-induced capillary recruitment in muscle. We hypothesize that similar mechanisms are operative, with both insulin and muscle contractions acting via NO-dependent mechanisms. Because of capillary reserve, and different initial steps of the signalling systems stimulated by insulin and exercise, capillary recruitment by combined contraction and insulin stimuli will be additive at both sub maximal and perhaps at maximal insulin pathway stimulation. Signalling mechanisms will be compared and the role of non-nutritive route as a flow reserve assessed.Read moreRead less
Role Of Adhesion Molecules In Autoimmune Vasculitis
Funder
National Health and Medical Research Council
Funding Amount
$377,036.00
Summary
Lupus is a disease which causes inflammation and pain throughout the body. The inflammation is caused by white blood cells attacking the lining of blood vessels in tissues. The aim of this project is to understand the reasons why these white blood cells attack the blood vessel lining. This process is impossible to study in humans. However, there is a strain of mouse which is affected by a disease which is very similar to human lupus. This disease occurs spontaneously in these mice. Using a micro ....Lupus is a disease which causes inflammation and pain throughout the body. The inflammation is caused by white blood cells attacking the lining of blood vessels in tissues. The aim of this project is to understand the reasons why these white blood cells attack the blood vessel lining. This process is impossible to study in humans. However, there is a strain of mouse which is affected by a disease which is very similar to human lupus. This disease occurs spontaneously in these mice. Using a microscope, it is possible to study the tiny blood vessels which are affected by this disease in these mice . Under the microscope, it is possible to see the white blood cells as they undergo the process of attacking the blood vessel lining. Visualizing this attack then allows us to study it and determine which molecules are important in causing this damaging inflammatory response. Specifically I will examine diseased blood vessels in the skin and brain of these mice, two of the tissues most dramatically affected by this disease. This information should help us gain an increased understanding of lupus as it affects humans.Read moreRead less