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Antifibrinolytics are a class of medication that are inhibitors of fibrinolysis. [1] Examples include aminocaproic acid (ε-aminocaproic acid) and tranexamic acid.These lysine-like drugs interfere with the formation of the fibrinolytic enzyme plasmin from its precursor plasminogen by plasminogen activators (primarily t-PA and u-PA) which takes place mainly in lysine rich areas on the surface ...
Thrombin demonstrates a high level of allosteric regulation. [2] Allosterism in thrombin is regulated by the exosites 1 and 2 and the sodium binding site. A recent patent review has shown that the general consensus among researchers is that allosteric inhibitors may provide a more regulatable anticoagulant. [3]
The result of these reactions is to convert fibrinogen, a soluble protein, to insoluble threads of fibrin. Together with platelets , the fibrin threads form a stable blood clot. Antithrombin (AT), a serine protease inhibitor, is the major plasma inhibitor of coagulation proteases. [ 15 ]
Fibrinogen is made and secreted into the blood primarily by liver hepatocyte cells. Endothelium cells are also reported to make small amounts of fibrinogen, but this fibrinogen has not been fully characterized; blood platelets and their precursors, bone marrow megakaryocytes, while once thought to make fibrinogen, are now known to take up and store but not make the glycoprotein.
FDPs compete with thrombin, and thus slow down clot formation by preventing the conversion of fibrinogen to fibrin. This effect can be seen in the thrombin clotting time (TCT) test, which is prolonged in a person that has active fibrinolysis. FDPs, and a specific FDP, the D-dimer, can be measured using antibody-antigen technology. This is more ...
Glycoprotein IIb/IIIa inhibitors are frequently used during percutaneous coronary intervention (angioplasty with or without intracoronary stent placement).. They work by preventing platelet aggregation and thrombus formation.
Thrombolysis, also called fibrinolytic therapy, is the breakdown of blood clots formed in blood vessels, using medication.It is used in ST elevation myocardial infarction, stroke, and in cases of severe venous thromboembolism (massive pulmonary embolism or extensive deep vein thrombosis).
Antithrombin (AT) is a small glycoprotein that inactivates several enzymes of the coagulation system. It is a 464-amino-acid protein produced by the liver.It contains three disulfide bonds and a total of four possible glycosylation sites. α-Antithrombin is the dominant form of antithrombin found in blood plasma and has an oligosaccharide occupying each of its four glycosylation sites.