PMID- 7829968 OWN - NLM STAT- MEDLINE DCOM- 19950223 LR - 20190516 IS - 0741-5400 (Print) IS - 0741-5400 (Linking) VI - 57 IP - 1 DP - 1995 Jan TI - Ligation of CD23 activates soluble guanylate cyclase in human monocytes via an L-arginine-dependent mechanism. PG - 160-7 AB - Transduction through Fc epsilon R2/CD23 was analyzed in normal human monocytes using immunoglobulin E (IgE)-anti-IgE immune complexes (IgE ICs) and monoclonal antibodies (mAbs) to CD23. Anti-CD23 mAb and IgE IC triggered a time-dependent increase in cGMP and cAMP in interleukin-4-preincubated (CD23+) but not in unstimulated (CD23-) monocytes. Maximal cGMP and cAMP accumulations were observed 10 and 20 min, respectively, after the onset of CD23 ligation. The increase in cGMP was inhibited with N omega-monomethyl-L-arginine (L-NMMA), which also partially affected cAMP accumulation. Addition of an anti-CD23 mAb Fab fragment inhibited the IgE IC- and the anti-CD23 mAb-induced cGMP and cAMP accumulation, confirming the engagement of CD23. In addition, IgE IC and anti-CD23 mAb induced, at least in some donors, a production of nitrite that was inhibited in the presence of L-NMMA. Taken together, these findings suggest a possible involvement of the nitric oxide synthase pathway in IgE IC-mediated activation of CD23+ monocytes. FAU - Paul-Eugene, N AU - Paul-Eugene N AD - INSERM U 365, Institut Curie, Paris, France. FAU - Kolb, J P AU - Kolb JP FAU - Sarfati, M AU - Sarfati M FAU - Arock, M AU - Arock M FAU - Ouaaz, F AU - Ouaaz F FAU - Debre, P AU - Debre P FAU - Mossalayi, D M AU - Mossalayi DM FAU - Dugas, B AU - Dugas B 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 (Antibodies, Monoclonal) RN - 0 (Antigen-Antibody Complex) RN - 0 (Receptors, IgE) RN - 207137-56-2 (Interleukin-4) RN - 27JT06E6GR (omega-N-Methylarginine) RN - 31C4KY9ESH (Nitric Oxide) RN - 37341-29-0 (Immunoglobulin E) RN - 94ZLA3W45F (Arginine) RN - E0399OZS9N (Cyclic AMP) RN - EC 4.6.1.2 (Guanylate Cyclase) RN - H2D2X058MU (Cyclic GMP) SB - IM MH - Antibodies, Monoclonal/immunology/pharmacology MH - Antigen-Antibody Complex/pharmacology MH - Arginine/analogs & derivatives/pharmacology/*physiology MH - Cells, Cultured MH - Cyclic AMP/metabolism MH - Cyclic GMP/metabolism MH - Enzyme Activation MH - Guanylate Cyclase/*metabolism/physiology MH - Humans MH - Immunoglobulin E/pharmacology MH - Interleukin-4/pharmacology MH - Monocytes/cytology/*enzymology/physiology MH - Nitric Oxide/antagonists & inhibitors/metabolism MH - Receptors, IgE/immunology/*physiology MH - omega-N-Methylarginine 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] AID - 10.1002/jlb.57.1.160 [doi] PST - ppublish SO - J Leukoc Biol. 1995 Jan;57(1):160-7. doi: 10.1002/jlb.57.1.160.