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Antibody-directed Delivery Of Anti-restenotic Agents Using Inorganic Nanoparticles
Funder
National Health and Medical Research Council
Funding Amount
$327,151.00
Summary
Arteries that have been surgically treated to remove fatty lesions that block blood flow frequently become re-blocked (restenosed), and drugs to prevent this re-blockage often have bad side-effects. We propose to prevent these complications by target-delivering the drugs directly and only to the required site using a single injection at the time of surgery. This will limit systemic side-effects, treatment costs and incidence of reblocking and bleeding complications.
Targetting The NADPHoxidase Source Of Reactive Oxygen Species In Vascular Disease
Funder
National Health and Medical Research Council
Funding Amount
$552,250.00
Summary
In Australia, coronary heart disease (CHD) leading to heart attacks or strokes is the largest cause of death, claiming a staggering 28,000 lives a year. Oxidative stress, resulting from increased production of oxygen free radicals in arteries, appears to be an important cause of CHD, heart attacks and strokes. We seek to understand how such oxyradicals are produced in the cells that make up the artery wall. Using novel DNA-type molecules we have recently discovered that a protein called Nox4 is ....In Australia, coronary heart disease (CHD) leading to heart attacks or strokes is the largest cause of death, claiming a staggering 28,000 lives a year. Oxidative stress, resulting from increased production of oxygen free radicals in arteries, appears to be an important cause of CHD, heart attacks and strokes. We seek to understand how such oxyradicals are produced in the cells that make up the artery wall. Using novel DNA-type molecules we have recently discovered that a protein called Nox4 is crucial for the production of oxygen free radicals by blood vessels. Furthermore, we have identified a class of drugs that selectively block the activity of Nox4 in blood vessels. We now wish to directly test whether inhibiting Nox4, either with DNA-type molecules, various drugs known to block Nox4, or by complete elimination of the Nox4 gene in mice, prevents the development of CHD in animal models. This work will not only advance our understanding of the origin of vascular oxidative damage but will also allow us to identify novel therapeutic targets in the treatment of cardiovascular diseases that are associated with increased oxidative stress. The same drugs and molecules might also prove useful for improving recovery from heart attacks and strokes, for Nox4 may be turned on in the heart and brain in these conditions. Information obtained in our study will be useful in directing future prescription practices in clinical management of CHD and stroke, and for designing new therapeutic compounds for CHD.Read moreRead less