PMID- 2154524 OWN - NLM STAT- MEDLINE DCOM- 19900326 LR - 20190516 IS - 0741-5400 (Print) IS - 0741-5400 (Linking) VI - 47 IP - 2 DP - 1990 Feb TI - Recombinant human interleukin-1 beta primes human polymorphonuclear leukocytes for stimulus-induced myeloperoxidase release. PG - 158-63 AB - Recombinant human Interleukin-1 (rhIL-1) beta was found to enhance stimulus-induced granule exocytosis from human polymorphonuclear leukocytes (PMNs). PMNs were incubated with rhIL-1 beta and then stimulated with either heat-aggregated IgG (Hagg) or N-formyl-methionyl leucylphenylalanine (FMLP). The release of the azurophil enzyme myeloperoxidase (MPO) was measured. Low concentrations of stimuli (10 micrograms/ml Hagg, 2.5 X 10(-9) M FMLP) did not stimulate degranulation in the absence of rhIL-1 beta. However, such concentrations elicited marked degranulation from PMNs preincubated with rhIL-1 beta (0.2-100 ng/ml). The enhancement of degranulation was dependent on the concentration of rhIL-1 beta employed and on the period of incubation. In other experiments, the effect of rhIL-1 beta on the PMN oxidative response was determined. rhIL-1 beta did not directly stimulate the production of superoxide anions or enhance the oxidative response to Hagg or FMLP. It is suggested that in rheumatoid joints, IL-1 beta may potentiate PMN degranulation, but not their oxidative response. FAU - Dularay, B AU - Dularay B AD - Medical School, University of Bristol, England. FAU - Elson, C J AU - Elson CJ FAU - Clements-Jewery, S AU - Clements-Jewery S FAU - Damais, C AU - Damais C FAU - Lando, D AU - Lando D LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Leukoc Biol JT - Journal of leukocyte biology JID - 8405628 RN - 0 (Interleukin-1) RN - 0 (Recombinant Proteins) RN - EC 1.11.1.7 (Peroxidase) SB - IM MH - Cell Degranulation/drug effects MH - Humans MH - Interleukin-1/*pharmacology MH - Neutrophils/drug effects/*enzymology MH - Oxidation-Reduction/drug effects MH - Peroxidase/*metabolism MH - Recombinant Proteins/*pharmacology EDAT- 1990/02/01 00:00 MHDA- 1990/02/01 00:01 CRDT- 1990/02/01 00:00 PHST- 1990/02/01 00:00 [pubmed] PHST- 1990/02/01 00:01 [medline] PHST- 1990/02/01 00:00 [entrez] AID - 10.1002/jlb.47.2.158 [doi] PST - ppublish SO - J Leukoc Biol. 1990 Feb;47(2):158-63. doi: 10.1002/jlb.47.2.158.