PMID- 8376779 OWN - NLM STAT- MEDLINE DCOM- 19931020 LR - 20071114 IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 151 IP - 6 DP - 1993 Sep 15 TI - Neutrophil attractant protein-1 and monocyte chemoattractant protein-1 in human serum. Effects of intravenous lipopolysaccharide on free attractants, specific IgG autoantibodies and immune complexes. PG - 3292-8 AB - We recently found that normal human sera contain IgG antibodies against two chemoattractants, neutrophil attractant protein-1 (NAP-1/IL-8) and monocyte chemoattractant protein-1 (MCP-1), as well as immune complexes of these proteins. Intravenously administered LPS was reported to cause a sharp rise in serum NAP-1 concentration. Our study was designed to determine if LPS also caused an increase in MCP-1 and to measure associated changes in concentrations of antibody and immune complex. LPS caused a rise to peak within 2 to 3 h in serum concentrations of free NAP-1 and MCP-1, followed by an almost equally rapid fall toward base-line levels by about 5 h postinjection. MCP-1 concentration in sera from the 11 subjects rose to a peak of 330 +/- 52 pM. The peak value for NAP-1 was 80 +/- 11 pM. In 10 of the 11 subjects, free IgG autoantibody to MCP-1 decreased from a mean pre-LPS value of 1820 +/- 660 pM to a mean low of 53% of the respective initial values. Corresponding data for IgG anti-NAP-1 were a pre-LPS concentration of 216 +/- 7 pM, which decreased to a mean low of 44% of the respective initial values. The finding in some subjects of a rapid rise in free antibody after the nadir suggests the possibility of acute regulation of autoantibody secretion rates. Although the results suggested that LPS-induced chemoattractant combined with free antibody, serum concentrations of MCP-1-IgG or NAP-1-IgG did not increase, which points to an as yet unknown mechanism for trapping and elimination of the immune complexes. FAU - Sylvester, I AU - Sylvester I AD - Biological Carcinogenesis and Development Program, Program Resources, Inc./DynCorp, National Cancer Institute-Frederick Cancer Research and Development Center, MD. FAU - Suffredini, A F AU - Suffredini AF FAU - Boujoukos, A J AU - Boujoukos AJ FAU - Martich, G D AU - Martich GD FAU - Danner, R L AU - Danner RL FAU - Yoshimura, T AU - Yoshimura T FAU - Leonard, E J AU - Leonard EJ LA - eng GR - N01-CO-74102/CO/NCI 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 (Antigen-Antibody Complex) RN - 0 (Autoantibodies) RN - 0 (Chemokine CCL2) RN - 0 (Chemotactic Factors) RN - 0 (Immunoglobulin G) RN - 0 (Interleukin-8) RN - 0 (Lipopolysaccharides) SB - IM MH - Adult MH - Antigen-Antibody Complex/*metabolism MH - Autoantibodies/*blood MH - Chemokine CCL2 MH - Chemotactic Factors/*metabolism MH - Female MH - Homeostasis MH - Humans MH - Immunoglobulin G/metabolism MH - Interleukin-8/*blood MH - Lipopolysaccharides/*pharmacology MH - Male EDAT- 1993/09/15 00:00 MHDA- 1993/09/15 00:01 CRDT- 1993/09/15 00:00 PHST- 1993/09/15 00:00 [pubmed] PHST- 1993/09/15 00:01 [medline] PHST- 1993/09/15 00:00 [entrez] PST - ppublish SO - J Immunol. 1993 Sep 15;151(6):3292-8.