PMID- 10204577 OWN - NLM STAT- MEDLINE DCOM- 19990429 LR - 20190516 IS - 0741-5400 (Print) IS - 0741-5400 (Linking) VI - 65 IP - 4 DP - 1999 Apr TI - Functional roles of MCP-1 in Propionibacterium acnes-induced, T cell-mediated pulmonary granulomatosis in rabbits. PG - 482-91 AB - The immunological manifestation of granuloma formations in humans largely depends on the delayed-type hypersensitivity response. We investigated the involvement of monocyte chemoattractant protein-1 (MCP-1) in a rabbit model of T cell-mediated pulmonary granulomatosis. Intravenous injection of Propionibacterium acnes (P. acnes) into sensitized rabbits induced massive and diffuse pulmonary granulomas. Levels of MCP-1 in sera and bronchoalveolar lavage fluids (BALF) peaked before the granuloma formation reached the peak (on days 1 and 3 after challenge, respectively). Chemotactic activities toward monocytes and T cells in BALF were inhibited by anti-MCP-1 IgG by 80 and 36%, respectively. The phenotypic analysis of the migrating T cells revealed that activated and memory T cells rather than naive cells were preferentially attracted to the BALF. Administration of anti-MCP-1 antiserum inhibited the development of granuloma formation in both size and number, the numbers of infiltrating leukocytes in BALF, the expression of adhesion molecules on peripheral monocytes/T cells, and on macrophages/T cells in BALF, and the production of TNF-alpha in the lung. Anti-MCP-1 resulted in a trend toward decreased level of IL-1beta in the lung. The inhibition of the production of these cytokines appeared to be induced indirectly through the inhibition of the recruitment of macrophages that produce these cytokines. The results suggest important roles of MCP-1 in the development of granuloma formation in this model through the attraction and activation of specific types of cells. FAU - Ichiyasu, H AU - Ichiyasu H AD - First Department of Internal Medicine, Kumamoto University School of Medicine, Japan. FAU - Suga, M AU - Suga M FAU - Matsukawa, A AU - Matsukawa A FAU - Iyonaga, K AU - Iyonaga K FAU - Mizobe, T AU - Mizobe T FAU - Takahashi, T AU - Takahashi T FAU - Ando, M AU - Ando M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Leukoc Biol JT - Journal of leukocyte biology JID - 8405628 RN - 0 (Chemokine CCL2) RN - 0 (Immune Sera) RN - 0 (Interleukin-1) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Animals MH - Bronchoalveolar Lavage Fluid/chemistry/cytology MH - Chemokine CCL2/metabolism/*physiology MH - Female MH - Gram-Positive Bacterial Infections/*immunology/pathology MH - Granuloma, Respiratory Tract/etiology/*immunology/pathology MH - Immune Sera/pharmacology MH - Interleukin-1/biosynthesis MH - Pneumonia, Bacterial/*immunology/pathology MH - Propionibacterium acnes/*immunology MH - Rabbits MH - T-Lymphocytes/*immunology MH - Tumor Necrosis Factor-alpha/biosynthesis EDAT- 1999/04/16 00:00 MHDA- 1999/04/16 00:01 CRDT- 1999/04/16 00:00 PHST- 1999/04/16 00:00 [pubmed] PHST- 1999/04/16 00:01 [medline] PHST- 1999/04/16 00:00 [entrez] AID - 10.1002/jlb.65.4.482 [doi] PST - ppublish SO - J Leukoc Biol. 1999 Apr;65(4):482-91. doi: 10.1002/jlb.65.4.482.