PMID- 30357941 OWN - NLM STAT- MEDLINE DCOM- 20190701 LR - 20190816 IS - 1600-0722 (Electronic) IS - 0909-8836 (Linking) VI - 126 IP - 6 DP - 2018 Dec TI - Eikenella corrodens lipopolysaccharide stimulates the pro-atherosclerotic response in human coronary artery endothelial cells and monocyte adhesion. PG - 476-484 LID - 10.1111/eos.12580 [doi] AB - Eikenella corrodens is a gram-negative bacterium, and although primarily associated with periodontal infections or infective endocarditis, it has been identified in coronary atheromatous plaques. The effect of its lipopolysaccharide (LPS) on human coronary artery endothelial cells (HCAECs) is unknown. Our aim was to examine the mechanism underlying the inflammatory response in HCAECs stimulated with E. corrodens-LPS and to evaluate monocyte adhesion. Endothelial responses were determined by measuring the levels of chemokines and cytokines using flow cytometry. The surface expression of intercellular adhesion molecule 1 (ICAM-1) was determined using a cell-based ELISA, and the adhesion of THP-1 monocytes to HCAECs was also monitored. The involvement of toll-like receptors (TLRs) 2 and 4 was examined using TLR-neutralizing antibodies, and activation of extracellular signal-regulated kinase (ERK)1/2 and nuclear factor-kappa B (NF-kappaB) p65 were measured by western blotting and ELISA, respectively. Eikenella corrodens-LPS increased secretion of interleukin-8 (IL-8), monocyte chemotactic protein 1 (MCP-1), and granulocyte-macrophage colony-stimulating factor (GM-CSF), and expression of ICAM-1 on the surface of HCAECs, consistent with the increased adhesion of THP-1 cells. Moreover, E. corrodens-LPS interacted with TLR4, a key receptor able to maintain the levels of IL-8, MCP-1, and GM-CSF in HCAECs. Phosphorylation of ERK1/2 and activation of NF-kappaB p65 were also increased. The results indicate that E. corrodens-LPS activates HCAECs through TLR4, ERK, and NF-kappaB p65, triggering a pro-atherosclerotic endothelial response and enhancing monocyte adhesion. CI - (c) 2018 Eur J Oral Sci. FAU - Viafara-Garcia, Sergio M AU - Viafara-Garcia SM AUID- ORCID: 0000-0002-4208-1422 AD - Unit of Basic Oral Investigation UIBO, School of Dentistry, Universidad El Bosque, Bogota, Colombia. FAU - Gualtero, Diego F AU - Gualtero DF AD - Unit of Basic Oral Investigation UIBO, School of Dentistry, Universidad El Bosque, Bogota, Colombia. FAU - Avila-Ceballos, Daniel AU - Avila-Ceballos D AD - Unit of Basic Oral Investigation UIBO, School of Dentistry, Universidad El Bosque, Bogota, Colombia. FAU - Lafaurie, Gloria I AU - Lafaurie GI AD - Unit of Basic Oral Investigation UIBO, School of Dentistry, Universidad El Bosque, Bogota, Colombia. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20181024 PL - England TA - Eur J Oral Sci JT - European journal of oral sciences JID - 9504563 RN - 0 (Antibodies, Neutralizing) RN - 0 (CXCL8 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Chemokines) RN - 0 (Cytokines) RN - 0 (Interleukin-8) RN - 0 (Lipopolysaccharides) RN - 0 (NF-kappa B) RN - 0 (TLR2 protein, human) RN - 0 (TLR4 protein, human) RN - 0 (Toll-Like Receptor 2) RN - 0 (Toll-Like Receptor 4) RN - 126547-89-5 (Intercellular Adhesion Molecule-1) RN - 83869-56-1 (Granulocyte-Macrophage Colony-Stimulating Factor) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) SB - IM MH - Antibodies, Neutralizing MH - Cell Adhesion/drug effects MH - Cell Survival MH - Cells, Cultured MH - Chemokine CCL2/metabolism MH - Chemokines/metabolism MH - Coronary Artery Disease/*chemically induced/*immunology MH - Coronary Vessels/*drug effects MH - Cytokines/metabolism MH - Eikenella corrodens/*metabolism MH - Endothelial Cells/*drug effects MH - Granulocyte-Macrophage Colony-Stimulating Factor/metabolism MH - Humans MH - Intercellular Adhesion Molecule-1/metabolism MH - Interleukin-8/metabolism MH - Lipopolysaccharides/*adverse effects/*immunology/metabolism MH - Mitogen-Activated Protein Kinases/metabolism MH - Monocytes/*drug effects MH - NF-kappa B/metabolism MH - Phosphorylation MH - THP-1 Cells/immunology MH - Toll-Like Receptor 2 MH - Toll-Like Receptor 4/drug effects OTO - NOTNLM OT - atherosclerosis OT - coronary artery disease OT - innate immunity OT - monocyte/macrophage OT - periodontitis EDAT- 2018/10/26 06:00 MHDA- 2019/07/02 06:00 CRDT- 2018/10/26 06:00 PHST- 2018/10/26 06:00 [pubmed] PHST- 2019/07/02 06:00 [medline] PHST- 2018/10/26 06:00 [entrez] AID - 10.1111/eos.12580 [doi] PST - ppublish SO - Eur J Oral Sci. 2018 Dec;126(6):476-484. doi: 10.1111/eos.12580. Epub 2018 Oct 24.