PMID- 25693634 OWN - NLM STAT- MEDLINE DCOM- 20150811 LR - 20181113 IS - 1365-2249 (Electronic) IS - 0009-9104 (Print) IS - 0009-9104 (Linking) VI - 180 IP - 3 DP - 2015 Jun TI - CD11c(+) macrophages and levels of TNF-alpha and MMP-3 are increased in synovial and adipose tissues of osteoarthritic mice with hyperlipidaemia. PG - 551-9 LID - 10.1111/cei.12607 [doi] AB - To understand more clearly the link between osteoarthritis and hyperlipidaemia, we investigated the inflammatory macrophage subsets and macrophage-regulated matrix metalloprotease-3 (MMP-3) and A disintegrin and metalloprotease with thrombospondin motifs-4 (ADAMTS4) in synovial (ST) and adipose tissues (AT) of osteoarthritic mice with hyperlipidaemia (STR/Ort). CD11c(+) F4/80(+) CD11b(+) macrophage populations in the ST and AT of 9-month-old STR/Ort and C57BL/6J mice were characterized and compared by flow cytometry and real-time polymerase chain reaction (PCR) analyses. Expression of tumour necrosis factor (TNF)-alpha, MMP-3 and ADAMTS4, and the response of these factors to anionic liposomal clodronate induced-macrophage depletion were also evaluated by real-time PCR. Expression of TNF-alpha in CD11c(+) cells, which were isolated by magnetic beads, was compared to CD11c(-) cells. In addition, the effect of TNF-alpha on cultured synovial fibroblasts and adipocytes was investigated. CD11c(+) F4/80(+) CD11b(+) macrophages were increased in ST and AT of STR/Ort mice. The CD11c(+) cell fraction highly expressed TNF-alpha. Expression of TNF-alpha and MMP3 was increased in ST and AT, and was decreased upon macrophage depletion. TNF-alpha treatment of cultured synovial fibroblasts and adipocytes markedly up-regulated MMP-3. CD11c(+) F4/80(+) CD11b(+) macrophages were identified as a common inflammatory subset in the AT and ST of STR/Ort mice with hyperlipidaemia. The induction of inflammation in AT and ST may be part of a common mechanism that regulates MMP3 expression through TNF-alpha. Our findings suggest that increased numbers of CD11c(+) macrophages and elevated levels of TNF-alpha and MMP-3 in AT and ST may explain the relationship between hyperlipidaemia and OA. CI - (c) 2015 British Society for Immunology. FAU - Uchida, K AU - Uchida K AD - Department of Orthopedic Surgery, Kitasato University School of Medicine, Sagamihara City, Kanagawa, Japan. FAU - Satoh, M AU - Satoh M AD - Department of Immunology, Kitasato University School of Medicine, Sagamihara City, Kanagawa, Japan. FAU - Inoue, G AU - Inoue G AD - Department of Orthopedic Surgery, Kitasato University School of Medicine, Sagamihara City, Kanagawa, Japan. FAU - Onuma, K AU - Onuma K AD - Department of Orthopedic Surgery, Kitasato University School of Medicine, Sagamihara City, Kanagawa, Japan. FAU - Miyagi, M AU - Miyagi M AD - Department of Orthopedic Surgery, Kitasato University School of Medicine, Sagamihara City, Kanagawa, Japan. FAU - Iwabuchi, K AU - Iwabuchi K AD - Department of Immunology, Kitasato University School of Medicine, Sagamihara City, Kanagawa, Japan. FAU - Takaso, M AU - Takaso M AD - Department of Orthopedic Surgery, Kitasato University School of Medicine, Sagamihara City, Kanagawa, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150420 PL - England TA - Clin Exp Immunol JT - Clinical and experimental immunology JID - 0057202 RN - 0 (CD11c Antigen) RN - 0 (Tumor Necrosis Factor-alpha) RN - EC 3.4.24.- (ADAM Proteins) RN - EC 3.4.24.14 (Procollagen N-Endopeptidase) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) RN - EC 3.4.24.82 (ADAMTS4 Protein) RN - EC 3.4.24.82 (Adamts4 protein, mouse) SB - IM MH - ADAM Proteins/genetics/metabolism MH - ADAMTS4 Protein MH - Adipose Tissue/*metabolism MH - Animals MH - CD11c Antigen/genetics/*metabolism MH - Disease Models, Animal MH - Fibroblasts/metabolism MH - Gene Expression MH - Hyperlipidemias/complications MH - Macrophages/immunology/*metabolism MH - Male MH - Matrix Metalloproteinase 3/genetics/*metabolism MH - Mice MH - Osteoarthritis/complications/genetics/*metabolism MH - Procollagen N-Endopeptidase/genetics/metabolism MH - Synovial Membrane/cytology/*metabolism MH - Tumor Necrosis Factor-alpha/genetics/*metabolism PMC - PMC4449783 OTO - NOTNLM OT - hyperlipidaemia OT - macrophage OT - matrix metalloprotease-3 OT - osteoarthritis OT - tumour necrosis factor-alpha EDAT- 2015/02/20 06:00 MHDA- 2015/08/12 06:00 PMCR- 2016/06/01 CRDT- 2015/02/20 06:00 PHST- 2015/02/12 00:00 [accepted] PHST- 2015/02/20 06:00 [entrez] PHST- 2015/02/20 06:00 [pubmed] PHST- 2015/08/12 06:00 [medline] PHST- 2016/06/01 00:00 [pmc-release] AID - 10.1111/cei.12607 [doi] PST - ppublish SO - Clin Exp Immunol. 2015 Jun;180(3):551-9. doi: 10.1111/cei.12607. Epub 2015 Apr 20.