TRILINOLEIN INHIBITS THE ADHESION OF NEUTROPHILS TO ENDOTHELIAL CELLS
| Autor: | Sung Yj, CY Hong, Huang Ss, Wang R, Kwok Cf |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Endothelium
Neutrophils Physiology Linoleic acid In Vitro Techniques Nitric oxide chemistry.chemical_compound Physiology (medical) Cell Adhesion medicine Glycerol Animals Humans Enzyme Inhibitors Cells Cultured Triglycerides Pharmacology chemistry.chemical_classification Fatty acid Adhesion Methylene Blue N-Formylmethionine Leucyl-Phenylalanine NG-Nitroarginine Methyl Ester medicine.anatomical_structure chemistry Biochemistry Cattle Endothelium Vascular Sodium nitroprusside Nitric Oxide Synthase Platelet Aggregation Inhibitors Methylene blue medicine.drug |
| Zdroj: | Clinical and Experimental Pharmacology and Physiology. 25:99-103 |
| ISSN: | 1440-1681 0305-1870 |
| Popis: | SUMMARY 1. Trilinolein is a triacylglycerol with linoleic acid as the only type of fatty acid in all three esterified positions of glycerol. It was recently reported to have a myocardial protective effect in coronary ligated rats. We now study its effect on the adhesion of human neutrophils to cultured bovine endothelial cells. 2. Pretreatment of an endothelial monolayer with trilinolein at concentrations ranging from 10-10 to 10-6 mol/L significantly inhibited neutrophil adhesion to endothelial cells. Trilinolein was less potent than sodium nitroprusside in inhibiting neutrophil adhesion. 3. The inhibitory effect of trilinolein was antagonized by methylene blue and NG-nitro-L-arginine methyl ester. The inhibitory effect of trilinolein was not mediated through linoleic acid because linoleic acid did not inhibit neutrophil adhesion. 4. Pretreatment of neutrophils with trilinolein did not reduce neutrophil adhesion. However, in neutrophils activated with N-formyl-methionyl-leucyl-phenylalanine, trilinolein inhibited the neutrophil adhesion to endothelial cells. 5. We conclude that trilinolein inhibits neutrophil adhesion to the endothelial monolayer by stimulating the nitric oxide and cyclic GMP pathways in endothelial cells. It may also inhibit neutrophil adhesion by scavenging free radicals. The inhibitory effect of trilinolein on neutrophil adhesion may play a role in its myocardial protective activity. |
| Databáze: | OpenAIRE |
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