title: Ultra performance liquid chromatography coupled with electrospray and atmospheric pressure chemical ionization (ESCi)-quadrupole time-of-flight mass spectrometry with novel mass spectrometry(Elevated Energy) (MS(E)) data collection technique: determination and pharmacokinetics, tissue distribution and biliary excretion study of ergone in rat.
abstract: Ergosta-4,6,8(14),22-tetraen-3-one (ergone) has been proved to have novel antitumor effects on HepG2 cells. The aim of this study was to investigate the pharmacokinetics, tissue distribution, and biliary excretion of ergone in rats following a single oral administration (5, 10, and 20 mg/kg). The levels of ergone in plasma, tissues, and bile were measured by ultra performance liquid chromatography coupled with electrospray and atmospheric pressure chemical ionization (ESCi)-quadrupole time-of-flight mass spectrometry with novel mass spectrometry(Elevated Energy) (MS(E)) data collection technique method. The results show ergone was distributed and eliminated from rat plasma and in non-linear pharmacokinetics from a dose range of 5-20 mg/kg. The ergone was found to distribute widely in the internal organs, with tissue concentrations in order of lungs, spleen, liver, intestine, kidneys, heart, stomach, parorchis, teasticles, and brain. At 12 h after dosing, the tissue concentrations in the organs were markedly decreased. The lungs, spleen, and liver were the dominant organs with high tissue concentrations that might be the primary sites for metabolism and elimination of ergone. Total recoveries of ergone within 24 h in bile were 34.14%.
authors: Department of Traditional Chinese Medicine, The College of Life Sciences, Northwest University, Xi'an, Shaanxi, PR China. zyy@nwu.edu.cn
authors: Ying-Yong
authors: YY
authors: Zhao
authors: Xian-Long
authors: XL
authors: Cheng
authors: Feng
authors: F
authors: Wei
authors: Xu
authors: X
authors: Bai
authors: Rui-Chao
authors: RC
authors: Lin
mesh_terms: D000818:Animals; D001646:Bile / Q000737:chemistry* / Q000378:metabolism; D002783:Cholestenones; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D003625:Data Collection; D004875:Ergosterol / Q000031:analogs & derivatives* / Q000032:analysis / Q000378:metabolism / Q000493:pharmacokinetics; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods; D053719:Tandem Mass Spectrometry / Q000379:methods*; D014018:Tissue Distribution
chemical_list: D002783:Cholestenones; C015860:ergosta-4,6,8(14),22-tetraen-3-one; D004875:Ergosterol