ArticleAgents and actions1992
Differential regulation of human eosinophil, macrophage, and neutrophil functions by the allergic mediator release inhibitor CI-959.
Article in Agents and actions, 1992. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Abstract
The cell activation inhibitor CI-959 [5-methoxy-3-(1-methyl-ethoxy)-N-1H- tetrazol-5-ylbenzo[b]thiophene-2-carboxamide, monosodium salt] was evaluated for its effect on the activation of human eosinophils, macrophages, and neutrophils by the phagocytic stimulus serum-opsonized zymosan (SOZ). CI-959 inhibited the respiratory burst of eosinophils and neutrophils, measured as the generation of superoxide anion, with IC50s of 9.6 and 14.5 microM, respectively. In contrast, 100 microM CI-959 inhibited superoxide anion generation by human macrophages by only 22.7%. The compound exhibited a different inhibition profile for lysosomal enzyme release from these cells. At 100 microM, CI-959 inhibited the release of eosinophil peroxidase and macrophage N-acetyl-beta-D-glucosaminidase by only 19.5 and 25.6%, respectively. In contrast, CI-959 inhibited the release of the neutrophil primary granule enzyme myeloperoxidase with an IC50 of 7.5 microM, while inhibiting release of lysozyme from secondary granules by only 11.4% at 100 microM. These results demonstrate that oxygen radical generation and lysosomal enzyme release by human leukocyte populations are differentially regulated by CI-959.
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