title: Synergism between interleukin-1 beta and tumor necrosis factor-alpha in production by 3T3 cells of a chemotactic factor for rat polymorphonuclear leukocytes.
abstract: Recombinant human interleukin-1 beta (IL-1) and tumor necrosis factor-alpha (TNF) synergistically stimulated BALB/c 3T3 cells to produce a chemotactic factor for rat polymorphonuclear leukocytes (PMNs), whereas an addition of 10(-11)-10(-8) M IL-1 or TNF alone to the cell culture resulted in a slight increase in the production of chemotactic factor. The partially purified factor was not a chemokinetic but chemotactic factor for PMNs when analyzed by checkerboard analysis. The partially purified factor was trypsin sensitive and heat stable; its isoelectric point was 8.5-10, and its molecular weight was about 10 kDa as estimated by gel filtration. These results suggest that fibroblasts may participate in PMN migration to the inflammatory site where both IL-1 and TNF are released by activated inflammatory cells, including macrophages.
authors: Faculty of Pharmaceutical Sciences, Toyama Medical and Pharmaceutical University, Japan.
authors: H
authors: H
authors: Nakagawa
authors: H
authors: H
authors: Miyai
authors: M
authors: M
authors: Hirata
authors: K
authors: K
authors: Watanabe
authors: I
authors: I
authors: Onuma
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D002630:Chemotactic Factors / Q000096:biosynthesis* / Q000302:isolation & purification / Q000494:pharmacology; D002634:Chemotaxis, Leukocyte / Q000187:drug effects; D004357:Drug Synergism; D005347:Fibroblasts / Q000187:drug effects* / Q000378:metabolism; D006801:Humans; D007375:Interleukin-1 / Q000494:pharmacology*; D051379:Mice; D008807:Mice, Inbred BALB C; D009504:Neutrophils / Q000187:drug effects*; D051381:Rats; D013268:Stimulation, Chemical; D014409:Tumor Necrosis Factor-alpha / Q000494:pharmacology*
chemical_list: D002630:Chemotactic Factors; D007375:Interleukin-1; D014409:Tumor Necrosis Factor-alpha