Biomaterial Database

Artificial factor VIII deficient plasma: preparation using monoclonal antibodies and its use in one stage coagulation assays. 1988

V S Hornsey, and Y G Waterston, and C V Prowse

Edinburgh, Blood Transfusion Service, Royal Infirmary, Scotland.

Monoclonal antibodies to factor VIII antigen (VIII:Ag) and von Willebrand factor (vWf:Ag) were immobilised on Sephacryl S-1000 and tested for their ability to deplete normal human citrated plasma of factor VIII. A combination of two antibodies to VIII:Ag and one antibody to vWf:Ag was required to produce plasma containing less than 0.01 IU/ml. Its performance in the one stage coagulation assay of VIII:C was equivalent to that of congenital VIII deficient plasma for the assay of normal and haemophilic plasma and factor VIII concentrates. Storage of freeze dried aliquots of this product at -20 degrees C, +4 degrees C, and 37 degrees C showed that it could be used as a substrate for at least six months when stored at temperatures +4 degrees C and below.

UI	MeSH Term	Description	Entries
D010952	Plasma Substitutes	Any liquid used to replace blood plasma, usually a saline solution, often with serum albumins, dextrans or other preparations. These substances do not enhance the oxygen- carrying capacity of blood, but merely replace the volume. They are also used to treat dehydration.	Blood Expanders,Plasma Volume Expanders,Expanders, Blood,Expanders, Plasma Volume,Substitutes, Plasma,Volume Expanders, Plasma
D001780	Blood Coagulation Tests	Laboratory tests for evaluating the individual's clotting mechanism.	Coagulation Tests, Blood,Tests, Blood Coagulation,Blood Coagulation Test,Coagulation Test, Blood,Test, Blood Coagulation
D005169	Factor VIII	Factor VIII of blood coagulation. Antihemophilic factor that is part of the factor VIII/von Willebrand factor complex. Factor VIII is produced in the liver and acts in the intrinsic pathway of blood coagulation. It serves as a cofactor in factor X activation and this action is markedly enhanced by small amounts of thrombin.	Coagulation Factor VIII,Factor VIII Clotting Antigen,Factor VIII Coagulant Antigen,Factor VIII Procoagulant Activity,Thromboplastinogen,Blood Coagulation Factor VIII,F VIII-C,Factor 8,Factor 8 C,Factor Eight,Factor VIIIC,Hyate-C,Hyatt-C,F VIII C,Hyate C,HyateC,Hyatt C,HyattC
D006467	Hemophilia A	The classic hemophilia resulting from a deficiency of factor VIII. It is an inherited disorder of blood coagulation characterized by a permanent tendency to hemorrhage.	Factor VIII Deficiency,Hemophilia,Autosomal Hemophilia A,Classic Hemophilia,Deficiency, Factor VIII,Factor 8 Deficiency, Congenital,Factor VIII Deficiency, Congenital,Haemophilia,Hemophilia A, Congenital,Hemophilia, Classic,As, Autosomal Hemophilia,Autosomal Hemophilia As,Classic Hemophilias,Congenital Hemophilia A,Congenital Hemophilia As,Hemophilia A, Autosomal,Hemophilia As,Hemophilia As, Autosomal,Hemophilia As, Congenital,Hemophilias, Classic
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000911	Antibodies, Monoclonal	Antibodies produced by a single clone of cells.	Monoclonal Antibodies,Monoclonal Antibody,Antibody, Monoclonal
D000941	Antigens	Substances that are recognized by the immune system and induce an immune reaction.	Antigen
D014841	von Willebrand Factor	A high-molecular-weight plasma protein, produced by endothelial cells and megakaryocytes, that is part of the factor VIII/von Willebrand factor complex. The von Willebrand factor has receptors for collagen, platelets, and ristocetin activity as well as the immunologically distinct antigenic determinants. It functions in adhesion of platelets to collagen and hemostatic plug formation. The prolonged bleeding time in VON WILLEBRAND DISEASES is due to the deficiency of this factor.	Factor VIII-Related Antigen,Factor VIIIR-Ag,Factor VIIIR-RCo,Plasma Factor VIII Complex,Ristocetin Cofactor,Ristocetin-Willebrand Factor,von Willebrand Protein,Factor VIII Related Antigen,Factor VIIIR Ag,Factor VIIIR RCo,Ristocetin Willebrand Factor
D014842	von Willebrand Diseases	Group of hemorrhagic disorders in which the VON WILLEBRAND FACTOR is either quantitatively or qualitatively abnormal. They are usually inherited as an autosomal dominant trait though rare kindreds are autosomal recessive. Symptoms vary depending on severity and disease type but may include prolonged bleeding time, deficiency of factor VIII, and impaired platelet adhesion.	Angiohemophilia,Hemophilia, Vascular,von Willebrand Disease,Vascular Pseudohemophilia,Von Willebrand Disorder,Von Willebrand's Factor Deficiency,von Willebrand Disease, Recessive Form,von Willebrand's Disease,von Willebrand's Diseases,Angiohemophilias,Disorder, Von Willebrand,Pseudohemophilia, Vascular,Pseudohemophilias, Vascular,Vascular Hemophilia,Vascular Hemophilias,Vascular Pseudohemophilias