Importance of experimental models for the development of clinical trials on thromboatherosclerosis. 1991

V Fuster, and J H Ip, and L Badimon, and J J Badimon, and B Stein, and J H Chesebro
Department of Medicine, Mount Sinai Medical Center, New York, NY 10029.

Experimental models of vascular injury have enhanced our understanding of the pathophysiological process leading to vascular obstruction in both spontaneous and accelerated atherosclerosis. Based on experimental findings, we present and discuss a pathological classification of vascular injury or damage and its role in the pathogenesis of various vascular diseases. In addition, these animal models have provided insights into the roles of platelets and lipid metabolism in the evolution and progression of atherosclerosis and have suggested potential therapeutic applications. Thus, based on studies in the pig models, antiplatelet agents have been shown for the first time to have a beneficial effect in preventing the formation and progression of coronary atherosclerotic lesions in humans. Similarly, our findings in high density lipoprotein plasma fractions regarding inhibition and even reversal of the process of atherosclerosis in a hypercholesterolemic rabbit model have added new insights to an explosive field of lipoprotein research and provided new avenues of therapeutic strategies. our in vivo and ex vivo pig models of an extracorporeal perfusion chamber mimicking the various coronary conditions have aided in the understanding of the pathophysiology of the acute coronary syndromes and intensified our search for the ideal antithrombotic regimen in these high-risk patients. Finally, a carotid pig model of balloon angioplasty, a dog model of saphenous vein grafting, and a pig model of heart transplantation not only have provided insights into the pathophysiological process of accelerated atherosclerosis but also are allowing development of new antithrombotic and antiproliferative approaches for the prevention of these accelerated vascular diseases. In summary, we are entering an exciting era in vascular research. Significant advances in our understanding of vascular injury or damage as well as the interactions of blood cells and lipids with the vascular wall have allowed us to formulate new experimental strategies with subsequent clinical application in the prevention and progression of these vascular diseases.

UI MeSH Term Description Entries
D008075 Lipoproteins, HDL A class of lipoproteins of small size (4-13 nm) and dense (greater than 1.063 g/ml) particles. HDL lipoproteins, synthesized in the liver without a lipid core, accumulate cholesterol esters from peripheral tissues and transport them to the liver for re-utilization or elimination from the body (the reverse cholesterol transport). Their major protein component is APOLIPOPROTEIN A-I. HDL also shuttle APOLIPOPROTEINS C and APOLIPOPROTEINS E to and from triglyceride-rich lipoproteins during their catabolism. HDL plasma level has been inversely correlated with the risk of cardiovascular diseases. High Density Lipoprotein,High-Density Lipoprotein,High-Density Lipoproteins,alpha-Lipoprotein,alpha-Lipoproteins,Heavy Lipoproteins,alpha-1 Lipoprotein,Density Lipoprotein, High,HDL Lipoproteins,High Density Lipoproteins,Lipoprotein, High Density,Lipoprotein, High-Density,Lipoproteins, Heavy,Lipoproteins, High-Density,alpha Lipoprotein,alpha Lipoproteins
D011956 Receptors, Cell Surface Cell surface proteins that bind signalling molecules external to the cell with high affinity and convert this extracellular event into one or more intracellular signals that alter the behavior of the target cell (From Alberts, Molecular Biology of the Cell, 2nd ed, pp693-5). Cell surface receptors, unlike enzymes, do not chemically alter their ligands. Cell Surface Receptor,Cell Surface Receptors,Hormone Receptors, Cell Surface,Receptors, Endogenous Substances,Cell Surface Hormone Receptors,Endogenous Substances Receptors,Receptor, Cell Surface,Surface Receptor, Cell
D001792 Blood Platelets Non-nucleated disk-shaped cells formed in the megakaryocyte and found in the blood of all mammals. They are mainly involved in blood coagulation. Platelets,Thrombocytes,Blood Platelet,Platelet,Platelet, Blood,Platelets, Blood,Thrombocyte
D001808 Blood Vessels Any of the tubular vessels conveying the blood (arteries, arterioles, capillaries, venules, and veins). Blood Vessel,Vessel, Blood,Vessels, Blood
D002986 Clinical Trials as Topic Works about pre-planned studies of the safety, efficacy, or optimum dosage schedule (if appropriate) of one or more diagnostic, therapeutic, or prophylactic drugs, devices, or techniques selected according to predetermined criteria of eligibility and observed for predefined evidence of favorable and unfavorable effects. This concept includes clinical trials conducted both in the U.S. and in other countries. Clinical Trial as Topic
D004195 Disease Models, Animal Naturally-occurring or experimentally-induced animal diseases with pathological processes analogous to human diseases. Animal Disease Model,Animal Disease Models,Disease Model, Animal
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000911 Antibodies, Monoclonal Antibodies produced by a single clone of cells. Monoclonal Antibodies,Monoclonal Antibody,Antibody, Monoclonal
D000991 Antithrombins Endogenous factors and drugs that directly inhibit the action of THROMBIN, usually by blocking its enzymatic activity. They are distinguished from INDIRECT THROMBIN INHIBITORS, such as HEPARIN, which act by enhancing the inhibitory effects of antithrombins. Antithrombin,Direct Antithrombin,Direct Antithrombins,Direct Thrombin Inhibitor,Direct Thrombin Inhibitors,Antithrombin, Direct,Antithrombins, Direct,Inhibitor, Direct Thrombin,Thrombin Inhibitor, Direct,Thrombin Inhibitors, Direct
D001161 Arteriosclerosis Thickening and loss of elasticity of the walls of ARTERIES of all sizes. There are many forms classified by the types of lesions and arteries involved, such as ATHEROSCLEROSIS with fatty lesions in the ARTERIAL INTIMA of medium and large muscular arteries. Arterioscleroses

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