PMID- 8597869 OWN - NLM STAT- MEDLINE DCOM- 19960423 LR - 20081121 IS - 1078-7852 (Print) IS - 1078-7852 (Linking) VI - 45 IP - 3 DP - 1995 TI - Regulation of GRO alpha production in human granulocytes. PG - 143-51 AB - GRO alpha, a member of the chemokine superfamily, exerts potent stimulatory actions on granulocytes. In this report, we show that activated human polymorphonuclear leukocytes (PMN) are able to produce significant amounts of GRO alpha. Lipopolysaccharide (LPS), tumor necrosis factor-alpha (TNF alpha), and yeast particles opsonized with IgG (Y-IgG) had the ability to induce GRO alpha release, with Y-IgG being the most potent stimulus. The extracellular production of GRO alpha was also modulated by both interferon-gamma (IFN gamma) and interleukin-10 (IL-10). IFN gamma significantly inhibited the production of GRO alpha by PMN stimulated for 2 hr with LPS, TNF alpha, or Y-IgG, but potentiated the production of GRO alpha in cells stimulated for 18 hr with LPS and TNF alpha. IL-10 moderately suppressed the Y-IgG-induced production of GRO alpha, but strongly inhibited the action of LPS and potentiated the effect of TNF alpha. As revealed by Northern blot analysis, the extracellular production of GRO alpha under the experimental conditions used did not always correlate with parallel changes at the level GRO alpha mRNA expression, suggesting that production of GRO alpha by PMN might be regulated at post-transcriptional, translational, or post-translational level. These findings identify a novel biological function of PMN, likely involved in the modulation of the acute inflammatory response. FAU - Gasperini, S AU - Gasperini S AD - Department of General Pathology, University of Verona, Italy. FAU - Calzetti, F AU - Calzetti F FAU - Russo, M P AU - Russo MP FAU - De Gironcoli, M AU - De Gironcoli M FAU - Cassatella, M A AU - Cassatella MA LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Inflamm JT - Journal of inflammation JID - 9511967 RN - 0 (CXCL1 protein, human) RN - 0 (Chemokine CXCL1) RN - 0 (Chemokines, CXC) RN - 0 (Chemotactic Factors) RN - 0 (Growth Inhibitors) RN - 0 (Growth Substances) RN - 0 (Immunoglobulin G) RN - 0 (Intercellular Signaling Peptides and Proteins) RN - 0 (Lipopolysaccharides) RN - 0 (Opsonin Proteins) RN - 0 (RNA, Messenger) RN - 0 (Tumor Necrosis Factor-alpha) RN - 130068-27-8 (Interleukin-10) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Chemokine CXCL1 MH - *Chemokines, CXC MH - Chemotactic Factors/*biosynthesis/genetics MH - Drug Synergism MH - Gene Expression MH - Growth Inhibitors/*biosynthesis/genetics MH - Growth Substances/*biosynthesis/genetics MH - Humans MH - Immunoglobulin G/pharmacology MH - *Intercellular Signaling Peptides and Proteins MH - Interferon-gamma/pharmacology MH - Interleukin-10/pharmacology MH - Lipopolysaccharides/pharmacology MH - Neutrophils/*metabolism MH - Opsonin Proteins MH - RNA, Messenger/metabolism MH - Saccharomyces cerevisiae MH - Tumor Necrosis Factor-alpha/pharmacology EDAT- 1995/01/01 00:00 MHDA- 1995/01/01 00:01 CRDT- 1995/01/01 00:00 PHST- 1995/01/01 00:00 [pubmed] PHST- 1995/01/01 00:01 [medline] PHST- 1995/01/01 00:00 [entrez] PST - ppublish SO - J Inflamm. 1995;45(3):143-51.