Biomaterial Database

Decreased precipitation of factor VIII related antigen with concanavalin A in patients with a variant of von Willebrand's disease and disseminated intravascular coagulation. 1980

H Takahashi, and N Sakuragawa, and A Shibata

Precipitation pattern of factor VIII related antigen (VIIIR:AG) with concanavalin A (Con A), a glycoprotein binding lectin, was investigated in normal subjects and patients with a variant of von Willebrand's disease (VWD) and disseminated intravascular coagulation (DIC). Decreased precipitation with Con A was demonstrated in patients with a variant of VWD in which VIIIR:AG showed an increase in electrophoretic mobility on crossed immunoelectrophoresis (CIE). Similar findings were obtained in patients with DIC which revealed normal electrophoretic mobility of VIIIR:AG. This procedure was assumed to be useful for the detection of a qualitative abnormality of the factor VIII protein.

UI	MeSH Term	Description	Entries
D011233	Precipitin Tests	Serologic tests in which a positive reaction manifested by visible CHEMICAL PRECIPITATION occurs when a soluble ANTIGEN reacts with its precipitins, i.e., ANTIBODIES that can form a precipitate.	Precipitin Test,Test, Precipitin,Tests, Precipitin
D003208	Concanavalin A	A MANNOSE/GLUCOSE binding lectin isolated from the jack bean (Canavalia ensiformis). It is a potent mitogen used to stimulate cell proliferation in lymphocytes, primarily T-lymphocyte, cultures.
D004211	Disseminated Intravascular Coagulation	A disorder characterized by procoagulant substances entering the general circulation causing a systemic thrombotic process. The activation of the clotting mechanism may arise from any of a number of disorders. A majority of the patients manifest skin lesions, sometimes leading to PURPURA FULMINANS.	Consumption Coagulopathy,Coagulation, Disseminated Intravascular,Disseminated Coagulation, Intravascular,Intravascular Coagulation, Disseminated,Intravascular Disseminated Coagulation,Coagulation, Intravascular Disseminated,Coagulations, Disseminated Intravascular,Coagulations, Intravascular Disseminated,Coagulopathies, Consumption,Coagulopathy, Consumption,Consumption Coagulopathies,Disseminated Coagulations, Intravascular,Disseminated Intravascular Coagulations,Intravascular Coagulations, Disseminated,Intravascular Disseminated Coagulations
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
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000941	Antigens	Substances that are recognized by the immune system and induce an immune reaction.	Antigen
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