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Intercellular adhesion molecule-1 and CD18 are involved in neutrophil adhesion and its cytotoxicity to cultured sinusoidal endothelial cells in rats. 1997

S Sakamoto, and T Okanoue, and Y Itoh, and K Sakamoto, and K Nishioji, and Y Nakagawa, and N Yoshida, and T Yoshikawa, and K Kashima
Third Department of Internal Medicine, Kyoto Prefectural University of Medicine, Japan.

The expression of several adhesion molecules is increased on the hepatic sinusoidal endothelial cells (SECs) in various liver diseases. The objective of this study is to assess the roles of intercellular adhesion molecule 1 (ICAM-1) and of CD18 in the interaction between the neutrophils (polymorphonuclear leukocytes [PMNs]) and SECs and in the injury to SECs mediated by PMNs. Rat PMNs was perfused on SECs stimulated with tumor necrosis factor alpha (TNF-alpha) using an in vitro flow system. The number of adhered PMNs to SECs and that of PMNs migrated under SECs was counted and the effects of anti-ICAM-1, anti-CD18, and dexamethasone were studied. We also define the effect of these antibodies on the SEC injury mediated by PMNs stimulated with phorbol 12-myristate 13-acetate (PMA) or N-formyl-methionyl-leucyl-phenylalanine (fMLP). TNF-alpha significantly increased the adhesion of PMNs to SECs (322 +/- 26 cells/mm2) compared with controls (194 +/- 22 cells/mm2). Anti-ICAM-1 and anti-CD18 significantly inhibited the adhesion of PMNs (131 +/- 10 and 51 +/- 30 cells/mm2, respectively). These antibodies also decreased the migration rate of PMNs (6.0% and 7.9%, respectively) compared with controls (migration rate, 21.2%). The SEC injury induced by PMA- and fMLP-activated PMNs was prevented by anti-ICAM-1 and anti-CD18. The adhesion of PMNs induced by TNF-alpha was inhibited by the treatment with dexamethasone (160 +/- 20 cells/mm2) via a down-regulation of ICAM-1 expression on SECs. The interactions between ICAM-1 and CD18 appeared to be important in the adhesion and the migration of PMNs to SECs. The injury to SECs was induced by the close interaction between the activated PMNs and SECs mediated via ICAM-1 and CD18.

UI MeSH Term Description Entries
D008099 Liver A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances. Livers
D008297 Male Males
D009240 N-Formylmethionine Leucyl-Phenylalanine A formylated tripeptide originally isolated from bacterial filtrates that is positively chemotactic to polymorphonuclear leucocytes, and causes them to release lysosomal enzymes and become metabolically activated. F-Met-Leu-Phe,N-Formyl-Methionyl-Leucyl-Phenylalanine,Formylmet-Leu-Phe,Formylmethionyl Peptide,Formylmethionyl-Leucyl-Phenylalanine,Formylmethionylleucylphenylalanine,N-Formylated Peptide,N-formylmethionyl-leucyl-phenylalanine,fMet-Leu-Phe,F Met Leu Phe,Formylmet Leu Phe,Formylmethionyl Leucyl Phenylalanine,Leucyl-Phenylalanine, N-Formylmethionine,N Formyl Methionyl Leucyl Phenylalanine,N Formylated Peptide,N Formylmethionine Leucyl Phenylalanine,N formylmethionyl leucyl phenylalanine,Peptide, Formylmethionyl,Peptide, N-Formylated,fMet Leu Phe
D009504 Neutrophils Granular leukocytes having a nucleus with three to five lobes connected by slender threads of chromatin, and cytoplasm containing fine inconspicuous granules and stainable by neutral dyes. LE Cells,Leukocytes, Polymorphonuclear,Polymorphonuclear Leukocytes,Polymorphonuclear Neutrophils,Neutrophil Band Cells,Band Cell, Neutrophil,Cell, LE,LE Cell,Leukocyte, Polymorphonuclear,Neutrophil,Neutrophil Band Cell,Neutrophil, Polymorphonuclear,Polymorphonuclear Leukocyte,Polymorphonuclear Neutrophil
D002448 Cell Adhesion Adherence of cells to surfaces or to other cells. Adhesion, Cell,Adhesions, Cell,Cell Adhesions
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D002634 Chemotaxis, Leukocyte The movement of leukocytes in response to a chemical concentration gradient or to products formed in an immunologic reaction. Leukotaxis,Leukocyte Chemotaxis
D003907 Dexamethasone An anti-inflammatory 9-fluoro-glucocorticoid. Hexadecadrol,Decaject,Decaject-L.A.,Decameth,Decaspray,Dexasone,Dexpak,Hexadrol,Maxidex,Methylfluorprednisolone,Millicorten,Oradexon,Decaject L.A.
D004727 Endothelium A layer of epithelium that lines the heart, blood vessels (ENDOTHELIUM, VASCULAR), lymph vessels (ENDOTHELIUM, LYMPHATIC), and the serous cavities of the body. Endotheliums
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia

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