Anticoagulation Factor IX polyclonal, anti-human

Quantity: 200 µl

Background:
The defined antibody reactivity is restricted to Factor IX as tested at the level of sensitivity of immuno-precipitation techniques. A single precipitin line is obtained in bidimensional electrophoresis, immunoelectrophoresis and double dial immunodiffusion (Ouchterlony) which shows a reaction of full identity with the purified immunogen. No precipitation is obtained with any other plasma protein and with haemophilia B plasma. n precipitating techniques as electroimmunodiffusion, immunoelectrophoresis and single and double radial immunodiffusion (Mancini, Ouchterlony). To prepare an adsorbent for immunoaffinity purification of FIX. If used in more sensitive test procedures or as catching or detection antibody in solid phase immunoassays specificity controls should always be include. Plasma samples and all assay components must contain EDTA to stabilize the proteins. Normal adult plasma contains an average of 1 mg FIX per 100 ml. In a normal population this varies between 80% and 120% of the average. Newborn infants have a level of about 75% of the average adult level. Absence of FIX in plasma causes a bleeding diathesis very similar to haemophilia A in clinical manifestations and from the point of view of heredity. It is known as haemophilia B or Christmas disease. Different types have been described. The most common type demonstrates reduced FIX coagulant activity without measurable FIX relates antigen. Other types of reduced FIX antigen and coagulation activity, or reduced coagulant activity with normal antigen levels. Heterozygote carriers can be detected. Acquired depression of plasma FIX levels are seen in vitamin K deficiencies, in liver disease, or following therapy with vitamin K antagonists (oral coagulants).

Isotype: Rabbit Polyclonal

Source: Factor IX is a vitamin K-dependent glycoprotein, MW 55,400, and it consists of a single polypeptide chain. It is synthesized in the liver, stable for several days in fresh blood and for many months in fresh frozen plasma. It can be prepared as a stable concentrate. Its physicochemical properties are similar to those of several other clotting factors, which makes separation particularly difficult. Factor IX is converted to FIXa by FXIa in the presence of calcium ions. Platelets possess FXI-like activity, bypassing FXII an XI. FIXa has a molecular weight of 46,500 and is composed of two chains linked by disulphide bonds. For immunization purposes, FIX can be obtained n highly purified form from fresh plasma concentrates. After coagulation, FIX antigen is also present in serum. Abnormal molecular variants are defective in proteolytic activation and serine protease activity, while calcium binding is also impaired. Freund's complete adjuvant is used in the first step of the immunization procedure.

Form: Delipidated, heat inactivated, in PBS and 0.1% sodium azide.

Reactivity: human

Cross Reactivity:
The antiserum does not cross-react with any other Human plasma proteins as tested in gel-diffusion techniques. Inter-species cross-reactivity is a normal feature of antibodies to plasma proteins, since homologous proteins of different species frequently share antigenic determinants. Cross-reactivity of this antiserum has not been tested in different species frequently share antigenic determinants. Cross-reactivity of this antiserum has not been tested in detail.

Applications: Immunoprecipitation

Storage: Store at 4C, or in small aliquots at -20C.