PMID- 12153519 OWN - NLM STAT- MEDLINE DCOM- 20021001 LR - 20190513 IS - 0019-2805 (Print) IS - 1365-2567 (Electronic) IS - 0019-2805 (Linking) VI - 106 IP - 4 DP - 2002 Aug TI - Augmented expression of tumour necrosis factor-alpha induced by lipopolysaccharide in spleen of human monocyte chemoattractant protein-1 transgenic mouse enhances the lipopolysaccharide sensitivity of the marginal zone macrophages. PG - 554-63 AB - Monocyte chemoattractant protein-1 (MCP-1) is a protective cytokine in murine endotoxaemia induced by lipopolysaccharide (LPS). In this study, LPS-induced pathophysiology in the human (h) MCP-1 transgenic mouse (Tgm) line was investigated. The hMCP-1 Tgm showed a marked increase in the mortality and weight loss following LPS administration. In the Tgm spleens, disappearance of marginal zone macrophages (MZMphi) and dendritic cells (DC) was induced by a smaller amount of LPS than that required for the disappearance in non-transgenic littermates. A significant number of apoptotic cells were seen in these areas. Furthermore, expressions of tumour necrosis factor-alpha (TNF-alpha), interleukin-1alpha (IL-1alpha), and IL-6 mRNA were enhanced and sustained in the LPS-treated Tgm. Neutralization of TNF-alpha considerably depressed the LPS-sensitivity of Tgm. These findings demonstrate that the continuous and systemic presence of MCP-1 is no more protective toward endotoxaemia and suggest that the high sensitivity of the MZMphi and DC to LPS is attributed to the enhanced TNF-alpha production in the hMCP-1 Tgm. FAU - Ato, Manabu AU - Ato M AD - Division of Immunobiology, Research Section of Pathophysiology, Institute for Genetic Medicine, Hokkaido University; Sapporo, Japan. kazunori@imm.hokudai.ac.jp FAU - Iwabuchi, Kazuya AU - Iwabuchi K FAU - Shimada, Shigeki AU - Shimada S FAU - Mukaida, Naofumi AU - Mukaida N FAU - Onoe, Kazunori AU - Onoe K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Immunology JT - Immunology JID - 0374672 RN - 0 (Chemokine CCL2) RN - 0 (Cytokines) RN - 0 (Interleukin-1) RN - 0 (Lipopolysaccharides) RN - 0 (RNA, Messenger) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Animals MH - Apoptosis/immunology MH - Chemokine CCL2/genetics/*immunology MH - Cytokines/genetics/metabolism MH - Dendritic Cells/immunology MH - Endotoxemia/*immunology MH - Gene Expression MH - Humans MH - Interleukin-1/metabolism MH - Lipopolysaccharides/*immunology MH - Macrophages/*immunology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Transgenic MH - RNA, Messenger/genetics MH - Spleen/immunology MH - Tumor Necrosis Factor-alpha/*metabolism PMC - PMC1782746 EDAT- 2002/08/03 10:00 MHDA- 2002/10/03 04:00 PMCR- 2003/08/01 CRDT- 2002/08/03 10:00 PHST- 2002/08/03 10:00 [pubmed] PHST- 2002/10/03 04:00 [medline] PHST- 2002/08/03 10:00 [entrez] PHST- 2003/08/01 00:00 [pmc-release] AID - 1450 [pii] AID - 10.1046/j.1365-2567.2002.01450.x [doi] PST - ppublish SO - Immunology. 2002 Aug;106(4):554-63. doi: 10.1046/j.1365-2567.2002.01450.x.