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Prostaglandin E2 production by macrophages, monocytes and polymorphonuclear leukocytes in rheumatoid arthritis.

Yuichiro Kondo, Morihiro Ohara, Reiji Kasukawa, Norimichi Nakahata, Hironori Nakanishi, Jun Matsumoto

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Abstract

Macrophages in synovial fluid of patients with rheumatoid arthritis (RASF-Mφ) released prostaglandin E2 (PGE2) when they were stimulated by lipopolysaccharide (LPS), aggregated-IgG (Agg-IgG) and opsonized-Zymosan (Zymosan) . Monocytes in peripheral blood of patients with rheumatoid arthritis (RA-Mo) and normal subjects (healthy-Mo) similarly released PGE2 when they were stimulated by LPS, Agg-IgG and Zymosan. Healthy-Mo released more amount of PGE2 than RA-Mo. The reduced PGE2 release of RA-Mo might be due to the effect of nonsteroidal antiinflammatory drugs taken by RA patients. Polymorphonuclear leukocytes (PMN), in synovial fluid and peripheral blood of patients with rheumatoid arthritis along with PMN of normal subjects, released little PGE2.

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Macrophages in synovial fluid of patients with rheumatoid arthritis (RASF-Mφ) released prostaglandin E2 (PGE2) when they were stimulated by lipopolysaccharide (LPS), aggregated-IgG (Agg-IgG) and opsonized-Zymosan (Zymosan) . Monocytes in peripheral blood of patients with rheumatoid arthritis (RA-Mo) and normal subjects (healthy-Mo) similarly released PGE2 when they were stimulated by LPS, Agg-IgG and Zymosan. Healthy-Mo released more amount of PGE2 than RA-Mo. The reduced PGE2 release of RA-Mo might be due to the effect of nonsteroidal antiinflammatory drugs taken by RA patients. Polymorphonuclear leukocytes (PMN), in synovial fluid and peripheral blood of patients with rheumatoid arthritis along with PMN of normal subjects, released little PGE2.

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Available abstract

Macrophages in synovial fluid of patients with rheumatoid arthritis (RASF-Mφ) released prostaglandin E2 (PGE2) when they were stimulated by lipopolysaccharide (LPS), aggregated-IgG (Agg-IgG) and opsonized-Zymosan (Zymosan) . Monocytes in peripheral blood of patients with rheumatoid arthritis (RA-Mo) and normal subjects (healthy-Mo) similarly released PGE2 when they were stimulated by LPS, Agg-IgG and Zymosan. Healthy-Mo released more amount of PGE2 than RA-Mo. The reduced PGE2 release of RA-Mo might be due to the effect of nonsteroidal antiinflammatory drugs taken by RA patients. Polymorphonuclear leukocytes (PMN), in synovial fluid and peripheral blood of patients with rheumatoid arthritis along with PMN of normal subjects, released little PGE2.

Key concepts: Zymosan, Rheumatoid arthritis, Prostaglandin E2, Lipopolysaccharide, Synovial fluid, Immunology, Medicine, Phagocytosis

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Prostaglandin E2 production by macrophages, monocytes and polymorphonuclear leukocytes in rheumatoid arthritis. — Research Paper | ScholarLens