title: Identification and quantification of metabolites of orally administered naringenin chalcone in rats.
abstract: Naringenin chalcone is the main active component of tomato skin extract, which has an antiallergic activity. In this study, naringenin chalcone was orally administered to rats, and the chemical structures and levels of the major metabolites in the plasma and urine of rats were determined. HPLC analysis indicated the presence of three major metabolites in the urine. LC-MS and NMR analyses tentatively identified these as naringenin chalcone-2'-O-beta-D-glucuronide, naringenin-7-O-beta-D-glucuronide, and naringenin-4'-O-beta-D-glucuronide. Naringenin chalcone-2'-O-beta-D-glucuronide was the only metabolite detected in the plasma, and its peak plasma level was observed 1 h after naringenin chalcone administration. Naringenin chalcone-2'-O-beta-D-glucuronide also inhibited histamine release from rat peritoneal mast cells stimulated with compound 48/80. This activity might contribute to the antiallergic activity of naringenin chalcone in vivo. To the best of the authors' knowledge, this study is the first to report determination of naringenin chalcone metabolites in rat plasma and urine.
authors: Research and Development Division, Kikkoman Corporation, Noda City, Chiba 278-0039, Japan. myoshimura@mail.kikkoman.co.jp
authors: Mineka
authors: M
authors: Yoshimura
authors: Atsushi
authors: A
authors: Sano
authors: Jun-Ichi
authors: J
authors: Kamei
authors: Akio
authors: A
authors: Obata
mesh_terms: D000818:Animals; D018926:Anti-Allergic Agents / Q000008:administration & dosage; D047188:Chalcones / Q000008:administration & dosage / Q000097:blood* / Q000652:urine*; D002851:Chromatography, High Pressure Liquid; D005638:Fruit / Q000737:chemistry; D006636:Histamine Release / Q000187:drug effects; D007700:Kinetics; D018551:Solanum lycopersicum / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D008407:Mast Cells / Q000378:metabolism; D010529:Peritoneal Cavity / Q000166:cytology; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D018926:Anti-Allergic Agents; D047188:Chalcones; C027329:naringenin chalcone