PMID- 11336536 OWN - NLM STAT- MEDLINE DCOM- 20010726 LR - 20131121 IS - 0026-2862 (Print) IS - 0026-2862 (Linking) VI - 61 IP - 3 DP - 2001 May TI - Histamine-induced production of interleukin-6 and interleukin-8 by human coronary artery endothelial cells is enhanced by endotoxin and tumor necrosis factor-alpha. PG - 253-62 AB - In this study, we tested the synergy between histamine and LPS, and histamine and TNF-alpha, on endothelial cell production of interleukin-6 (IL-6), interleukin-8 (IL-8), and monocyte chemoattractant protein-1 (MCP-1). Human coronary artery endothelial cells (HCAEC) were cultured in vitro with histamine (0.1 to 1000 microM) in the presence or absence of LPS or TNF-alpha for 24 h, and the secreted IL-6, IL-8 and MCP-1 were quantified. Unactivated HCAEC produced minimal levels of IL-6, IL-8, or MCP-1. The incubation of HCAEC with histamine resulted in low level induction of IL-6 and IL-8 production, which was dose-dependent and attained a plateau at a concentration of 10 microM. On the other hand, histamine failed to induce MCP-1 production. Stimulation of HCAEC with LPS or TNF-alpha caused dose-dependent increase in cytokine production. In the presence of all stimulatory concentrations of LPS and TNF-alpha tested, histamine was shown to further enhance IL-6 and IL-8 production. The effect of histamine on endothelial cell production of cytokines was completely inhibited by the H-1 receptor antagonist, diphenhydramine, and not by the H-2 antagonist, famotidine. Electrophoretic mobility shift assays of nuclear proteins extracted from HCAEC treated with histamine and LPS, or histamine and TNF-alpha, revealed amplified translocation of NF-kappaB proteins to the nuclei. Since both LPS and TNF-alpha potentiated histamine-induced cytokine production, it is possible that these activators stimulate H-1 receptor expression and/or augment the signal transduction pathways leading to the expression of IL-6 and IL-8. These results indicate the importance of synergy between histamine and other inflammatory stimuli on endothelial cell activation and implicate their cooperative participation in vascular leak and inflammation. CI - Copyright 2001 Academic Press. FAU - Li, Y AU - Li Y AD - Division of Allergy, Department of Medicine, Kansas City, Kansas 66160, USA. FAU - Chi, L AU - Chi L FAU - Stechschulte, D J AU - Stechschulte DJ FAU - Dileepan, K N AU - Dileepan KN LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Microvasc Res JT - Microvascular research JID - 0165035 RN - 0 (Chemokine CCL2) RN - 0 (Histamine H1 Antagonists) RN - 0 (Histamine H2 Antagonists) RN - 0 (Interleukin-6) RN - 0 (Interleukin-8) RN - 0 (Lipopolysaccharides) RN - 0 (NF-kappa B) RN - 0 (Tumor Necrosis Factor-alpha) RN - 5QZO15J2Z8 (Famotidine) RN - 820484N8I3 (Histamine) RN - 8GTS82S83M (Diphenhydramine) SB - IM MH - Cells, Cultured MH - Chemokine CCL2/biosynthesis MH - Coronary Vessels/cytology/drug effects/immunology MH - Diphenhydramine/pharmacology MH - Drug Synergism MH - Endothelium, Vascular/cytology/*drug effects/*immunology MH - Famotidine/pharmacology MH - Histamine/administration & dosage/*pharmacology MH - Histamine H1 Antagonists/pharmacology MH - Histamine H2 Antagonists/pharmacology MH - Humans MH - Interleukin-6/*biosynthesis MH - Interleukin-8/*biosynthesis MH - Lipopolysaccharides/administration & dosage/pharmacology MH - NF-kappa B/metabolism MH - Tumor Necrosis Factor-alpha/administration & dosage/pharmacology EDAT- 2001/05/05 10:00 MHDA- 2001/07/28 10:01 CRDT- 2001/05/05 10:00 PHST- 2001/05/05 10:00 [pubmed] PHST- 2001/07/28 10:01 [medline] PHST- 2001/05/05 10:00 [entrez] AID - S0026-2862(01)92304-0 [pii] AID - 10.1006/mvre.2001.2304 [doi] PST - ppublish SO - Microvasc Res. 2001 May;61(3):253-62. doi: 10.1006/mvre.2001.2304.