Prostaglandin and thromboxane production by human and guinea-pig macrophages and leucocytes |
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Authors: | J Morley MA Bray RW Jones DH Nugteren DA van Dorp |
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Institution: | 1. Clinical Pharmacology, Cardiothoracic Institute, Fulham Road, London SW3 6HP, UK |
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Abstract: | The ability of partially purified human and guinea-pig haematogenous cell populations, when cultured in vitro, to metabolise arachidonic acid (AA) has been studied. Supernatants from 24 hour cell culture have been subjected to analysis for products of AA metabolism by gas chromatography with electron-capture detection.The cell types studied were human peripheral blood monocytes (both glass adherent and non-adherent), neutrophils, eosinophils and leukemic leucocytes; thoracic duct lymphocytes and lung alveolar macrophages. From the guinea-pig, induced and non-induced macrophage or neutrophil enriched peritoneal exudate populations, lymph node cells, peritoneal eosinophils and peripheral blood platelets were examined. Supernatants were assayed for the presence of PGE2, PGD2, PGF2α, TXB2 and 6-keto-PGF1α. In all types studied PGE2 and TXB2 were the major products formed. The identification of PGE2 and TXB2 was confirmed by GC/MS with multiple ion monitoring.The results have been compared with other reports and their possible significance discussed in relation to the proposed role of prostaglandins as mediators and modulators in immunopathology. |
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Keywords: | PROSTAGLANDIN — BIOSYNTHESIS THROMBOXANE MACROPHAGES LEUCOCYTES MASS SPECTROMETRY ELECTRON-CAPTURE DETECTION |
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