title: Nitric oxide production in mouse peritoneal macrophages enhanced with glycyrrhizin.
abstract: The enhancement of nitric oxide (NO) production in glycyrrhizin (GL)-induced macrophages (M phi) in response to lipopolysaccharide (LPS) was investigated. No production in GL-induced macrophage culture supernatants was stimulated in response to LPS (10 micrograms/ml) for 24- or 48- h cultures, and these levels were compared three times with the levels in saline-induced peritoneal exudate cell cultures. Furthermore, M phi induced with proteose peptone (PP) containing GL could generate greater NO production than M phi induced with PP alone. However, no stimulation of NO production was observed by addition of GL in the cultures of M phi induced with thioglycollate or Bacillus Calmette Guerin. Moreover, GL-induced M phi showed cytostasis against such tumor target cells as L 1210 and P 388 lymphoma cell lines. These observations indicate that GL can activate the M phi in vivo system and stimulate NO production in response to LPS.
authors.affiliation: Pharmaceutical Institute, Tohoku University, Sendai, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Kondo
authors.forename: F
authors.initials: F
authors.lastname: Takano
mesh_terms: D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000494:pharmacology*; D002364:Caseins / Q000494:pharmacology; D006034:Glycyrrhetinic Acid / Q000031:analogs & derivatives* / Q000494:pharmacology; D019695:Glycyrrhizic Acid; D007939:Leukemia L1210 / Q000188:drug therapy; D007941:Leukemia P388 / Q000188:drug therapy; D008070:Lipopolysaccharides / Q000494:pharmacology; D017737:Macrophages, Peritoneal / Q000187:drug effects / Q000378:metabolism*; D051379:Mice; D008809:Mice, Inbred C3H; D009569:Nitric Oxide / Q000096:biosynthesis*; D010446:Peptide Fragments / Q000494:pharmacology; D010461:Peptones / Q000494:pharmacology; D013268:Stimulation, Chemical; D014407:Tumor Cells, Cultured
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D002364:Caseins; D008070:Lipopolysaccharides; D010446:Peptide Fragments; D010461:Peptones; C018135:proteose-peptone; D009569:Nitric Oxide; D019695:Glycyrrhizic Acid; D006034:Glycyrrhetinic Acid