Indomethacin prevents the induction of inducible nitric oxide synthase in murine peritoneal macrophages and decreases their nitric oxide production.
Life Sciences(2001)
摘要
Indomethacin (0.1–0.5 mM concentration) inhibits nitric oxide production in murine peritoneal macrophages. This was evidenced by measuring both nitrite production or 14C-L-citrulline formation. The inhibition was caused by the diminution of de novo inducible nitric oxide synthase production as demonstrated by Western blotting experiment. The effect of indomethacin after 4 h treatment was irreversible. NO synthase and arginase activities and the uptake of arginine were not directly affected by the drug. Indomethacin also decreased uridine incorporation in macrophages. The effect of indomethacin on the induction of other enzymes (i.e. arginase) was weaker.
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关键词
Nitric oxide,Nitric oxide synthase,Indomethacin,Inhibition of induction,Macrophages
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