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Matches in SemOpenAlex for { <https://semopenalex.org/work/W91035524> ?p ?o ?g. }

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• W91035524 abstract "To determine whether alveolar macrophages from smokers have an abnormal interleukin 1 beta (IL-1) release, we obtained macrophages by bronchoalveolar lavage (BAL) of otherwise healthy volunteers in three groups: nonsmokers (NS; n = 11), light smokers (LS, less than 10 pack-yr smoking history; n = 4) and heavy smokers (HS, greater than 10 pack-yr smoking history; n = 9). After 24 h in culture, unstimulated macrophages (from each group) released negligible amounts of IL-1. Lipopolysaccharide (LPS) (1 micrograms/ml) caused release of 21.77 +/- 4.33 ng IL-1/10(6) cells at 24 h from NS macrophages; IL-1 release from HS macrophages was significantly decreased (5.52 +/- 1.66 ng/10(6) cells; P less than 0.05), whereas LS macrophages released intermediate amounts (15.07 +/- 6.15 ng/10(6) cells). Release of IL-1 from HS macrophages was also decreased after 48 and 72 h in culture and was observed over a wide range of concentrations of LPS. The decreased amount of IL-1 in HS macrophage supernatants appeared to be due to a defect in release of IL-1 from the cells and not due to a defect in production of the mediator, since total IL-1 (IL-1 present in the cell lysates plus that in the cell supernatants) was similar in the NS and HS groups. In addition, after 24 h in culture, LPS-stimulated HS macrophages released significantly less prostaglandin E2 (PGE2) (which can suppress IL-1 production) than did NS macrophages; in the presence of indomethacin, which abolished macrophage PGE2 release, no augmentation of LPS-stimulated IL-1 release was observed. Cell viability, as measured by lactate dehydrogenase release, was not different between HS and NS macrophages under any conditions. We conclude that there is a defect in release but not production of IL-1 from the alveolar macrophages of chronic smokers." @default.
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• W91035524 date "1989-02-01" @default.
• W91035524 modified "2023-09-25" @default.
• W91035524 title "Cigarette smoking decreases interleukin 1 release by human alveolar macrophages" @default.
• W91035524 cites W1983125305 @default.
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• W91035524 doi "https://doi.org/10.1152/ajpcell.1989.256.2.c260" @default.
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