PMID- 10570305 OWN - NLM STAT- MEDLINE DCOM- 19991220 LR - 20171116 IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 163 IP - 11 DP - 1999 Dec 1 TI - Endogenous monocyte chemoattractant protein-1 (MCP-1) protects mice in a model of acute septic peritonitis: cross-talk between MCP-1 and leukotriene B4. PG - 6148-54 AB - We investigated the involvement of monocyte chemoattractant protein (MCP)-1 in a murine model of septic peritonitis induced by cecal ligation and puncture (CLP). Initial studies demonstrated that CLP induced a dramatic increase in MCP-1 production in the peritoneum, followed by an increase in the recruitment of leukocytes. MCP-1 blockade with anti-MCP-1 antiserum significantly decreased the survival rate following CLP, which was accompanied by an enhanced recovery of viable bacteria from the peritoneum. This was likely due to the reduction in the recruitment and activation of both macrophages and neutrophils. To understand the mechanisms whereby MCP-1 may influence neutrophil infiltration, levels of chemokines known to attract neutrophils were monitored, which showed that peritoneal levels of macrophage-inflammatory protein (MIP)-2, KC, and MIP-1alpha were not altered with anti-MCP-1 Abs. However, anti-MCP-1 Abs reduced the peritoneal levels of leukotriene B4 (LTB4) by 59%. The i.p. injection of MCP-1 into normal mice resulted in elevated levels of LTB4 in the peritoneum. In vitro, MCP-1 stimulated the production of LTB4 from peritoneal macrophages, in a dose-dependent manner. A specific LTB4 receptor antagonist (CP-105, 696) inhibited CLP-induced recruitment of both neutrophils and macrophages, which was accompanied by a reduced level of MCP-1 in the peritoneum. Finally, administration of CP-105,696 was extremely detrimental to the survival of mice following CLP. These experiments demonstrate that endogenous MCP-1 serves as an indirect mediator to attract neutrophils via the production of LTB4, and suggest the cross-talk can occur between MCP-1 and the lipid mediator LTB4 during septic peritonitis. FAU - Matsukawa, A AU - Matsukawa A AD - Departments ofPathology and Internal Medicine, Division of Pulmonary and Critical Care, University of Michigan Medical School, Ann Arbor, MI 48109, USA. FAU - Hogaboam, C M AU - Hogaboam CM FAU - Lukacs, N W AU - Lukacs NW FAU - Lincoln, P M AU - Lincoln PM FAU - Strieter, R M AU - Strieter RM FAU - Kunkel, S L AU - Kunkel SL LA - eng GR - HL31237/HL/NHLBI NIH HHS/United States GR - P50HL60289/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (Benzopyrans) RN - 0 (Carboxylic Acids) RN - 0 (Chemokine CCL2) RN - 0 (Chemokines) RN - 0 (Receptors, Leukotriene B4) RN - 1HGW4DR56D (Leukotriene B4) RN - Z7354TW4BM (CP 105696) SB - IM MH - Animals MH - Ascitic Fluid/chemistry MH - Benzopyrans/pharmacology MH - Carboxylic Acids/pharmacology MH - Cecum/surgery MH - Chemokine CCL2/blood/*metabolism MH - Chemokines/biosynthesis MH - Female MH - Leukotriene B4/*metabolism MH - Mice MH - Peritoneal Cavity/microbiology MH - Peritonitis/*immunology MH - *Receptor Cross-Talk MH - Receptors, Leukotriene B4/antagonists & inhibitors MH - Sepsis/*immunology EDAT- 1999/11/26 00:00 MHDA- 1999/11/26 00:01 CRDT- 1999/11/26 00:00 PHST- 1999/11/26 00:00 [pubmed] PHST- 1999/11/26 00:01 [medline] PHST- 1999/11/26 00:00 [entrez] AID - ji_v163n11p6148 [pii] PST - ppublish SO - J Immunol. 1999 Dec 1;163(11):6148-54.