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Protein C, also known as autoprothrombin IIA and blood coagulation factor XIV, [5]: 6822 [6] is a zymogen, that is, an inactive enzyme.The activated form plays an important role in regulating anticoagulation, inflammation, and cell death and maintaining the permeability of blood vessel walls in humans and other animals.
Protein C is vitamin K-dependent. Patients with Protein C deficiency are at an increased risk of developing skin necrosis while on warfarin. Protein C has a short half life (8 hour) compared with other vitamin K-dependent factors and therefore is rapidly depleted with warfarin initiation, resulting in a transient hypercoagulable state.
Protein C Anticoagulant Pathway: Thrombin escaping from a site of vascular injury binds to its receptor thrombomodulin (TM) on the intact cell surface. As a result, thrombin loses its procoagulant properties and instead becomes a potent activator of protein C. Activated protein C (APC) functions as a circulating anticoagulant, which ...
Endothelial protein C receptor (EPCR) also known as activated protein C receptor (APC receptor) is a protein that in humans is encoded by the PROCR gene. [ 5 ] [ 6 ] [ 7 ] PROCR has also recently been designated CD201 ( cluster of differentiation 201).
In the beginning, protein C inhibitor(PCI) was originally identified in human plasma by Griffin and Marlar [10] and first isolation was performed by Suzuki et al. [11] Protein C inhibitor (PCI) can be isolated from human plasma using an ordinary chromatographic procedure consisting of barium citrate adsorption, polyethylene glycol fractionation, DEAE-Sepharose CL-6B treatment, ammonium sulfate ...
The activated protein C resistance (APCR) test is a coagulation test used in the evaluation and diagnosis of activated protein C (APC) resistance, a form of hypercoagulability. [ 1 ] [ 2 ] Hereditary APC resistance is usually caused by the factor V Leiden mutation, whereas acquired APC resistance has been linked to antiphospholipid antibodies ...
Because drotrecogin-alpha is a therapeutic protein, there exists a potential for immunogenicity. Antibodies against drotrecogin have been observed. There is insufficient data at this time to quantify the risk, but extreme caution should be exercised if a patient has previously received drotrecogin-alpha.
The myosin-binding protein C, cardiac-type is a protein that in humans is encoded by the MYBPC3 gene. [5] This isoform is expressed exclusively in heart muscle during human and mouse development, [6] and is distinct from those expressed in slow skeletal muscle and fast skeletal muscle ().