PMID- 1740648 OWN - NLM STAT- MEDLINE DCOM- 19920324 LR - 20190516 IS - 0741-5400 (Print) IS - 0741-5400 (Linking) VI - 51 IP - 1 DP - 1992 Jan TI - Heterogeneity in the mobilization of cytoplasmic calcium by human polymorphonuclear leukocytes in response to fMLP, C5a and IL-8/NAP-1. PG - 77-83 AB - The visible excitation and emission wave-lengths of the recently developed fluorescent Ca2+ indicator fluo-3 permit analysis of the intracellular Ca2+ concentration, [Ca2+]i, in flow cytometry with a 488-nm argon laser. The role of [Ca2+]i in human polymorphonuclear leukocyte heterogeneity was investigated in response to formyl-methionyl-leucyl-phenylalanine (fMLP), C5a, and interleukin 8/neutrophil attractant/activation protein 1 (IL-8/NAP-1) by flow cytometry. The [Ca2+]i changes in different subpopulations within a heterogeneous cell suspension were resolved upon stimulation with fMLP. Using an anti-CD16 phycoerythrin-conjugated antibody and fluo-3 simultaneously, neutrophils affected and nonaffected in Ca2+ mobilization were distinguished in two patients suffering from glycogen storage disease type 1b. In normal neutrophils, a different time course of Ca2+ mobilization of neutrophil subpopulations immediately after stimulation with fMLP was detected. In addition, after stimulation with a low concentration of IL-8/NAP-1 (10(-10) M) two subsets of neutrophils appeared; one of them showed an increase in [Ca2+]i, while the other did not. These results indicate heterogeneity in the neutrophil signal transduction process involved in Ca2+ mobilization. Therefore, flow cytometric analyses can resolve changes in single-cell [Ca2+]i distribution patterns, which is important for the understanding of [Ca2+]i in neutrophil heterogeneous activation processes. FAU - Elsner, J AU - Elsner J AD - Department of Immunobiology, Fraunhofer Institut ITA, Hannover, Germany. FAU - Kaever, V AU - Kaever V FAU - Emmendorffer, A AU - Emmendorffer A FAU - Breidenbach, T AU - Breidenbach T FAU - Lohmann-Matthes, M L AU - Lohmann-Matthes ML FAU - Roesler, J AU - Roesler J LA - eng PT - Journal Article PL - England TA - J Leukoc Biol JT - Journal of leukocyte biology JID - 8405628 RN - 0 (Aniline Compounds) RN - 0 (Interleukin-8) RN - 0 (Xanthenes) RN - 23D4W0B50Y (Fluo-3) RN - 59880-97-6 (N-Formylmethionine Leucyl-Phenylalanine) RN - 80295-54-1 (Complement C5a) RN - SY7Q814VUP (Calcium) SB - IM MH - Aniline Compounds MH - Calcium/*metabolism MH - Complement C5a/*pharmacology MH - Cytoplasm/drug effects/*metabolism MH - Flow Cytometry MH - Humans MH - Interleukin-8/*pharmacology MH - N-Formylmethionine Leucyl-Phenylalanine/*pharmacology MH - Neutrophils/drug effects/*metabolism/physiology MH - Spectrometry, Fluorescence MH - Time Factors MH - Xanthenes EDAT- 1992/01/01 00:00 MHDA- 1992/01/01 00:01 CRDT- 1992/01/01 00:00 PHST- 1992/01/01 00:00 [pubmed] PHST- 1992/01/01 00:01 [medline] PHST- 1992/01/01 00:00 [entrez] AID - 10.1002/jlb.51.1.77 [doi] PST - ppublish SO - J Leukoc Biol. 1992 Jan;51(1):77-83. doi: 10.1002/jlb.51.1.77.