Biomaterial Database

Induction of ICAM-1 expression on the eosinophilic leukemia cell line-3 (EoL-3) by platelet-activating factor and platelet factor 4. 1995

M Seguchi, and S Nakajima

Fourth Department of Internal Medicine, Kinki University School of Medicine, Osaka, Japan.

BACKGROUND Eosinophils are assumed to transmigrate to local tissue under the direction of the eosinophil chemotactic factor present in allergic inflammatory lesions. OBJECTIVE We examined whether PAF and PF4, which are related to eosinophil localization, affect the expression of ICAM-1 on the human eosinophilic leukemia cell line (EoL-3). METHODS ICAM-1 expression on EoL-3 cells in the presence or absence of PAF or PF4 was assessed by immunofluorescent analysis. The presence of sICAM-1 in culture supernatants of EoL-3 cells was detected with an ELISA kit. RESULTS Both PAF and PF4 enhanced the expression of ICAM-1 on EoL-3 cells. We found no difference in sICAM-1 concentration with or without PAF or PF4. CONCLUSIONS The eosinophil chemotactic factors PAF and PF4 not only may attract eosinophils, but they may enhance the expression of ICAM-1 on eosinophils at the site of the lesion. Further, it is suggested that the shedding of ICAM-1 has little relation to the induction of ICAM-1 expression in vitro.

UI	MeSH Term	Description	Entries
D010972	Platelet Activating Factor	A phospholipid derivative formed by PLATELETS; BASOPHILS; NEUTROPHILS; MONOCYTES; and MACROPHAGES. It is a potent platelet aggregating agent and inducer of systemic anaphylactic symptoms, including HYPOTENSION; THROMBOCYTOPENIA; NEUTROPENIA; and BRONCHOCONSTRICTION.	AGEPC,Acetyl Glyceryl Ether Phosphorylcholine,PAF-Acether,Phosphorylcholine, Acetyl Glyceryl Ether,1-Alkyl-2-acetyl-sn-glycerophosphocholine,Platelet Aggregating Factor,Platelet Aggregation Enhancing Factor,Platelet-Activating Substance,Thrombocyte Aggregating Activity,1 Alkyl 2 acetyl sn glycerophosphocholine,Aggregating Factor, Platelet,Factor, Platelet Activating,PAF Acether,Platelet Activating Substance
D010978	Platelet Factor 4	A CXC chemokine that is found in the alpha granules of PLATELETS. The protein has a molecular size of 7800 kDa and can occur as a monomer, a dimer or a tetramer depending upon its concentration in solution. Platelet factor 4 has a high affinity for HEPARIN and is often found complexed with GLYCOPROTEINS such as PROTEIN C.	Antiheparin Factor,CXCL4 Chemokine,Chemokine CXCL4,Heparin Neutralizing Protein,PF4 (Platelet Factor 4),gamma-Thromboglobulin,CXCL4, Chemokine,Chemokine, CXCL4,gamma Thromboglobulin
D003470	Culture Media	Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN.	Media, Culture
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
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014407	Tumor Cells, Cultured	Cells grown in vitro from neoplastic tissue. If they can be established as a TUMOR CELL LINE, they can be propagated in cell culture indefinitely.	Cultured Tumor Cells,Neoplastic Cells, Cultured,Cultured Neoplastic Cells,Cell, Cultured Neoplastic,Cell, Cultured Tumor,Cells, Cultured Neoplastic,Cells, Cultured Tumor,Cultured Neoplastic Cell,Cultured Tumor Cell,Neoplastic Cell, Cultured,Tumor Cell, Cultured
D017681	Hypereosinophilic Syndrome	A heterogeneous group of disorders with the common feature of prolonged eosinophilia of unknown cause and associated organ system dysfunction, including the heart, central nervous system, kidneys, lungs, gastrointestinal tract, and skin. There is a massive increase in the number of EOSINOPHILS in the blood, mimicking leukemia, and extensive eosinophilic infiltration of the various organs.	Endocarditis, Loeffler's,Idiopathic Hypereosinophilic Syndrome,Leukemia, Eosinophilic,Loeffler's Endocarditis,Endocarditis, Loeffler,Hypereosinophilic Syndrome, Idiopathic,Loeffler Endocarditis,Endocarditis, Loefflers,Eosinophilic Leukemia,Eosinophilic Leukemias,Hypereosinophilic Syndromes,Hypereosinophilic Syndromes, Idiopathic,Idiopathic Hypereosinophilic Syndromes,Leukemias, Eosinophilic,Loefflers Endocarditis,Syndrome, Hypereosinophilic,Syndrome, Idiopathic Hypereosinophilic,Syndromes, Hypereosinophilic,Syndromes, Idiopathic Hypereosinophilic
D018799	Intercellular Adhesion Molecule-1	A cell-surface ligand involved in leukocyte adhesion and inflammation. Its production is induced by gamma-interferon and it is required for neutrophil migration into inflamed tissue.	Antigens, CD54,CD54 Antigens,ICAM-1,CD54 Antigen,Antigen, CD54,Intercellular Adhesion Molecule 1