BioAim Scientific (Kanada)
The Bioaim Mouse PF4 ELISA kit is a solid phase sandwich ELISA (enzyme-linked immunosorbent assay) for the quantitative measurement of PF4 in mouse serum, plasma and cell culture media. An antibody specific for mouse PF4 was coated on a 96-well plate. Standards and samples are added to the wells and any PF4 present binds to the immobilized antibody. The wells are washed and biotinylated anti-mouse PF4 antibody is added. After washing away unbound biotinylated antibody, HRP-conjugated streptavidin is added to the wells. The wells are again washed and TMB substrate solution is added, which produces a blue color in direct proportion to the amount of PF4 present in the initial sample. The Stop Solution changes the color from blue to yellow, and the microwell absorbances are read at 450 nm.Research Area Angiogenesis; inflammation; coagualtion;
platelet factor 4( PF-4 ) Background: Platelet factor-4 is a 70-amino acid protein that is released from the alpha-granules of activated platelets and binds with high affinity to heparin. Its major physiologic role appears to be neutralization of heparin-like molecules on the endothelial surface of blood vessels, thereby inhibiting local antithrombin III activity and promoting coagulation. As a strong chemoattractant for neutrophils and fibroblasts, PF4 probably has a role in inflammation and wound repair. PF4 is chemotactic for neutrophils, fibroblasts and monocytes, and interacts with a splice variant of the chemokine receptor CXCR3, known as CXCR3B. The heparin:PF4 complex is the antigen in heparin-induced thrombocytopenia, an idiosyncratic autoimmune reaction to the administration of the anticoagulant heparin. PF4 autoantibodies have also been found in patients with thrombosis and features resembling HIT but no prior administration of heparin. The human platelet factor 4 kills malaria parasites within erythrocytes by selectively lysing the parasite’s digestive vacuole.
Serum, plasma, Cell culture supernatant
|Antigen Name||platelet factor 4|
|Detection Range||4.1-3000 pg/ml|