title: Determination of erythromycin A in rat plasma and urine by high-performance liquid chromatography with chemiluminescence detection using Tris(2,2'-bipyridine)ruthenium(II).
abstract: A simple and sensitive method was developed for the determination of erythromycin A (EA), decladinosyl erythromycin A (dClEA) and erythromycin B (EB) in rat plasma and urine by high-performance liquid chromatography with electrogenerated chemiluminescence detection using Tris(2,2'-bipyridine)ruthenium(II). The recovery rates of EA, dClEA and EB were 97, 94 and 85% from rat plasma and 89, 83 and 93% from rat urine, respectively. The calibration curves were linear over the concentration ranges 0.05-5 microg/mL for plasma and 0.5-50 microg/mL for urine. The precision and accuracy for all analytes in rat plasma were < or =9.0 and -6.3-7.2%, and those in urine were < or =9.4% and -6.1-7.6%, respectively. This method proved to be a powerful tool for determination of EA, dClEA and EB concentrations in samples from rats.
authors.affiliation: Discovery Research Laboratories, Shionogi & Co. Ltd, 3-1-1 Futaba-cho, Toyonaka, Osaka 561-0825, Japan. toshihiko.hori@shionogi.co.jp
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Hori
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Hashimoto
authors.forename: Masaharu
authors.initials: M
authors.lastname: Konishi
mesh_terms: D015082:2,2'-Dipyridyl / Q000031:analogs & derivatives* / Q000737:chemistry; D000818:Animals; D000900:Anti-Bacterial Agents / Q000097:blood / Q000493:pharmacokinetics* / Q000652:urine; D019540:Area Under Curve; D002138:Calibration; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D056831:Coordination Complexes; D004917:Erythromycin / Q000097:blood / Q000493:pharmacokinetics* / Q000652:urine; D006863:Hydrogen-Ion Concentration; D049449:Luminescence; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley; D012015:Reference Standards; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D017975:Ruthenium Compounds
chemical_list: D015082:2,2'-Dipyridyl; D000900:Anti-Bacterial Agents; D056831:Coordination Complexes; D004917:Erythromycin; C547232:tris(2,2-bipyridine)-ruthenium(II); D017975:Ruthenium Compounds