PMID- 12410798 OWN - NLM STAT- MEDLINE DCOM- 20021213 LR - 20190818 IS - 0300-9475 (Print) IS - 0300-9475 (Linking) VI - 56 IP - 5 DP - 2002 Nov TI - CD14-mediated induction of interleukin-8 and monocyte chemoattractant protein-1 by a heat-resistant constituent of Porphyromonas gingivalis in endothelial cells. PG - 484-91 AB - Viable and inactivated Porphyromonas gingivalis dose-dependently induced interleukin-8 (IL-8) and monocyte chemoattractant protein-1 (MCP-1) secretion in human umbilical vein endothelial cells (HUVECs). The inactivated P. gingivalis, in comparison with viable bacteria, tended to enhance the production of both chemokines more strongly. The production of MCP-1 protein began increasing immediately after stimulation by P. gingivalis, and there was a nearly linear increase from 0 to 8 h of incubation, whereas IL-8 production showed a linear increase between 4 and 12 h of incubation. The IL-8 and MCP-1 mRNA expressions in HUVECs as determined by reverse transcriptase-polymerase chain reaction (RT-PCR) or Quantikine mRNA colorimetric quantification kits were found to be enhanced by P. gingivalis. Furthermore, the time courses of IL-8 and MCP-1 mRNA expressions were in accordance with those of protein production. Addition of polymyxin B or boiling did not weaken the stimulatory effect of P. gingivalis, which inhibited the effect of Escherichia coli lipopolysaccharide (E. coli LPS) and tumour necrosis factor-alpha (TNF-alpha), respectively. In contrast, the induction of IL-8 and MCP-1 by P. gingivalis was significantly reduced by anti-CD14 antibody. Our results suggest that some heat-stable component of P. gingivalis, including LPS, may be responsible for the induction of IL-8 and MCP-1 in HUVECs by a CD14-dependent mechanism. These effects might be involved in the accumulation and activation of neutrophils and monocytes at an early stage of the periodontal pathogenesis. FAU - Mao, S AU - Mao S AD - Department of Bacteriology; Department of Pediatrics; and Surgical Center, Faculty of Medicine, Kagoshima University, Kagoshima, Japan. FAU - Maeno, N AU - Maeno N FAU - Yoshiie, K AU - Yoshiie K FAU - Matayoshi, S AU - Matayoshi S FAU - Fujimura, T AU - Fujimura T FAU - Oda, H AU - Oda H LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - England TA - Scand J Immunol JT - Scandinavian journal of immunology JID - 0323767 RN - 0 (Chemokine CCL2) RN - 0 (Interleukin-8) RN - 0 (Lipopolysaccharide Receptors) RN - 0 (RNA, Messenger) RN - J2VZ07J96K (Polymyxin B) SB - IM MH - Bacteroidaceae Infections/etiology/immunology MH - Base Sequence MH - Cells, Cultured MH - Chemokine CCL2/*biosynthesis/genetics MH - Endothelium, Vascular/immunology MH - Gene Expression MH - Hot Temperature MH - Humans MH - Interleukin-8/*biosynthesis/genetics MH - Kinetics MH - Lipopolysaccharide Receptors/*metabolism MH - Periodontitis/etiology/immunology MH - Polymyxin B/pharmacology MH - Porphyromonas gingivalis/*immunology/*pathogenicity MH - RNA, Messenger/genetics/metabolism EDAT- 2002/11/02 04:00 MHDA- 2002/12/17 04:00 CRDT- 2002/11/02 04:00 PHST- 2002/11/02 04:00 [pubmed] PHST- 2002/12/17 04:00 [medline] PHST- 2002/11/02 04:00 [entrez] AID - 1163 [pii] AID - 10.1046/j.1365-3083.2002.01163.x [doi] PST - ppublish SO - Scand J Immunol. 2002 Nov;56(5):484-91. doi: 10.1046/j.1365-3083.2002.01163.x.