Biomaterial Database

The demonstration of lupus anticoagulant by an enzyme-linked immunoadsorbent assay. 1986

D W Branch, and N S Rote, and J R Scott

Lupus anticoagulant, an autoantibody associated with thromboembolic disease and pregnancy loss, is currently identified by its capability to prolong phospholipid-dependent coagulation tests, such as the activated partial thromboplastin time (APTT). The use of a coagulation assay for the detection of an antibody has several inherent disadvantages: fresh plasma is required for accurate testing, prolongation of coagulation test(s) is not specific for lupus anticoagulant, and coagulation assays are not easily manipulated for the characterization of antigen-antibody interactions. Using partial thromboplastin an the antigen, we have developed an enzyme-linked immunoadsorbent assay (ELISA) for the detection of lupus anticoagulant. Fifteen women with lupus anticoagulant (being evaluated for recurrent pregnancy loss or autoimmune disease) and 40 lupus anticoagulant-negative controls (including 20 with recurrent pregnancy loss, 12 parous women, and 8 with known autoimmune disease) were evaluated using the APTT and ELISA assays for lupus anticoagulant. All patients with lupus anticoagulant, as defined by the APTT, had significantly elevated IgG (sensitivity and specificity, 100%) or IgG + IgM (sensitivity 93%, specificity 95%) levels compared to controls.

UI	MeSH Term	Description	Entries
D007074	Immunoglobulin G	The major immunoglobulin isotype class in normal human serum. There are several isotype subclasses of IgG, for example, IgG1, IgG2A, and IgG2B.	Gamma Globulin, 7S,IgG,IgG Antibody,Allerglobuline,IgG(T),IgG1,IgG2,IgG2A,IgG2B,IgG3,IgG4,Immunoglobulin GT,Polyglobin,7S Gamma Globulin,Antibody, IgG,GT, Immunoglobulin
D007075	Immunoglobulin M	A class of immunoglobulin bearing mu chains (IMMUNOGLOBULIN MU-CHAINS). IgM can fix COMPLEMENT. The name comes from its high molecular weight and originally was called a macroglobulin.	Gamma Globulin, 19S,IgM,IgM Antibody,IgM1,IgM2,19S Gamma Globulin,Antibody, IgM
D008180	Lupus Erythematosus, Systemic	A chronic, relapsing, inflammatory, and often febrile multisystemic disorder of connective tissue, characterized principally by involvement of the skin, joints, kidneys, and serosal membranes. It is of unknown etiology, but is thought to represent a failure of the regulatory mechanisms of the autoimmune system. The disease is marked by a wide range of system dysfunctions, an elevated erythrocyte sedimentation rate, and the formation of LE cells in the blood or bone marrow.	Libman-Sacks Disease,Lupus Erythematosus Disseminatus,Systemic Lupus Erythematosus,Disease, Libman-Sacks,Libman Sacks Disease
D001777	Blood Coagulation	The process of the interaction of BLOOD COAGULATION FACTORS that results in an insoluble FIBRIN clot.	Blood Clotting,Coagulation, Blood,Blood Clottings,Clotting, Blood
D001779	Blood Coagulation Factors	Endogenous substances, usually proteins, that are involved in the blood coagulation process.	Clotting Factor,Coagulation Factors,Blood Coagulation Factor,Clotting Factors,Coagulation Factor,Coagulation Factor, Blood,Coagulation Factors, Blood,Factor, Coagulation,Factors, Coagulation,Factor, Blood Coagulation,Factor, Clotting,Factors, Blood Coagulation,Factors, Clotting
D004797	Enzyme-Linked Immunosorbent Assay	An immunoassay utilizing an antibody labeled with an enzyme marker such as horseradish peroxidase. While either the enzyme or the antibody is bound to an immunosorbent substrate, they both retain their biologic activity; the change in enzyme activity as a result of the enzyme-antibody-antigen reaction is proportional to the concentration of the antigen and can be measured spectrophotometrically or with the naked eye. Many variations of the method have been developed.	ELISA,Assay, Enzyme-Linked Immunosorbent,Assays, Enzyme-Linked Immunosorbent,Enzyme Linked Immunosorbent Assay,Enzyme-Linked Immunosorbent Assays,Immunosorbent Assay, Enzyme-Linked,Immunosorbent Assays, Enzyme-Linked
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001323	Autoantibodies	Antibodies that react with self-antigens (AUTOANTIGENS) of the organism that produced them.	Autoantibody
D016682	Lupus Coagulation Inhibitor	An antiphospholipid antibody found in association with a variety of diseases (e.g., SYSTEMIC LUPUS ERYTHEMATOSUS and ANTIPHOSPHOLIPID SYNDROME) as well as in healthy individuals. In vitro, the antibody interferes with the conversion of prothrombin to thrombin and prolongs the partial thromboplastin time. In vivo, it exerts a procoagulant effect resulting in thrombosis mainly in the larger veins and arteries. It further causes obstetrical complications, including fetal death and spontaneous abortion, as well as a variety of hematologic and neurologic complications.	Lupus Anticoagulant,Lupus Anticoagulant Autoantibodies,Lupus Anticoagulant Autoantibody,Anticoagulant, Lupus,Coagulation Inhibitor, Lupus,Inhibitor, Lupus Coagulation,Anticoagulant Autoantibody, Lupus,Autoantibody, Lupus Anticoagulant