Abstract
Both interleukin 1 alpha (IL-1 alpha) and tumor necrosis factor alpha (TNF alpha) stimulated the production of interleukin 8 (IL-8) by synovial cells in time and dose dependent manners. Enhanced chemotactic activity of polymorphonuclear cells (PMN) in culture supernatants of synovial cells was neutralized with anti-IL-8 antibody, thus showing synovial cells to be capable of secreting IL-8 which may contribute to PMN accumulation in rheumatoid inflamed joints.
MeSH terms
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Cells, Cultured
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Chemotaxis / drug effects
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Chemotaxis / physiology
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Cycloheximide / pharmacology
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Dactinomycin / pharmacology
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Dose-Response Relationship, Drug
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Humans
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Interleukin-1 / pharmacology*
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Interleukin-8 / analysis
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Interleukin-8 / metabolism*
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Neutrophils / drug effects
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Neutrophils / physiology
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Radioimmunoassay
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Synovial Membrane / cytology*
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Synovial Membrane / drug effects
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Synovial Membrane / metabolism*
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Time Factors
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Tumor Necrosis Factor-alpha / pharmacology*
Substances
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Interleukin-1
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Interleukin-8
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Tumor Necrosis Factor-alpha
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Dactinomycin
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Cycloheximide