en
Scientific article
English

Determination of the oral platelet aggregation inhibitor Sibrafiban in rat, dog, and human plasma utilising HPLC-column switching combined with turbo ion spray single quadrupole mass spectrometry

Published inJournal of pharmaceutical and biomedical analysis, vol. 21, no. 1, p. 151-163
Publication date1999
Abstract

A sensitive and selective HPLC-column switching method with single quadrupole mass spectrometric detection was developed for the simultaneous determination of the oral platelet aggregation inhibitor Sibrafiban (double protected prodrug), its prodrug and the active metabolite in rat, dog, and human plasma. The three analytes together with their tri-deuterated internal standards were isolated from plasma by protein precipitation (0.5 M perchloric acid). The de-proteinated samples were injected onto a standard-bore trapping column (4.0 mm i.d., LC-ABZ) of an HPLC-column switching system. Polar plasma components were removed by flushing the trapping column with ammonium formate (pH 3.6; 5 mM). Enriched compounds (including the analytes of interest) were backflushed onto a narrow-bore analytical column (2.1 mm i.d., Inertsil ODS-2) and separated by gradient elution (formic acid/ methanol). The whole effluent (200 microl/min) from the analytical column was passed to the turbo ion spray interface without splitting. Selected ion monitoring (SIM) was used for mass spectrometric detection. The limit of quantification for all three analytes was 1 ng/ml, using a 250-microl specimen of plasma. The mean precision and inaccuracy for the three analytes in all species were < 6 and < 5%, respectively. The practicability of the new analytical method was demonstrated by the analysis of about 500 rat and dog plasma and about 14,000 human plasma samples. The new method represents a successful example for the application of LC single MS with ionspray ionisation to the analysis of small molecule drugs in biological matrices from toxicokinetic studies and large clinical trials.

Keywords
  • Administration, Oral
  • Animals
  • Calibration
  • Chromatography, High Pressure Liquid/methods
  • Dogs
  • Drug Stability
  • Humans
  • Mass Spectrometry/methods
  • Oximes/blood
  • Piperidines/blood
  • Platelet Aggregation Inhibitors/blood
  • Quality Control
  • Rats
  • Reference Standards
  • Reproducibility of Results
Citation (ISO format)
TIMM, U. et al. Determination of the oral platelet aggregation inhibitor Sibrafiban in rat, dog, and human plasma utilising HPLC-column switching combined with turbo ion spray single quadrupole mass spectrometry. In: Journal of pharmaceutical and biomedical analysis, 1999, vol. 21, n° 1, p. 151–163. doi: 10.1016/s0731-7085(99)00126-0
Main files (1)
Article (Accepted version)
accessLevelRestricted
Identifiers
ISSN of the journal0731-7085
516views
0downloads

Technical informations

Creation07/29/2009 11:16:00 AM
First validation07/29/2009 11:16:00 AM
Update time03/14/2023 3:10:03 PM
Status update03/14/2023 3:10:03 PM
Last indexation05/02/2024 11:13:56 AM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack