Document Detail

Quantitation of bentysrepinine (Y101) in rat plasma by liquid chromatography tandem mass spectrometry: Application to pharmacokinetic study.
MedLine Citation:
PMID:  22366283     Owner:  NLM     Status:  Publisher    
A simple, accurate and sensitive liquid chromatography tandem mass spectrometry (LC-MS/MS) method was developed and validated for quantitation of bentysrepinine (Y101) in rat plasma. After the addition of diphenhydramine (internal standard, IS), plasma samples were pretreated by protein precipitation. Chromatographic separation was carried out on an Atlantis(®) analytical column (4.6mm×100mm, 5μm, Waters) with methanol: 20mM ammonium formate consisting of 1.0% formic acid (65:35, v/v) as the mobile phase at an isocratic flow rate of 0.4mL/min for 7.5min. The multiple reaction monitoring (MRM) transitions were performed at m/z 490.2→339.5 for Y101and m/z 256.0→167.0 for IS on a SCIEX API 4000 mass spectrometer in the positive ion mode with electrospray ionization (ESI) source. Good linearity was achieved over the concentration range of 1-2500ng/mL. The intra- and inter-day precisions were less than 8.3%, and the accuracy ranged from -4.0% to 2.8%. Y101 was stable during the analysis and the storage period. The pharmacokinetic profiles of Y101 at three dose levels were successfully studied for the first time in rats by this method. After single intra-gastric administration of Y101 at the doses of 25, 50 and 100mg/kg, C(max) and AUC(0-t) were proportional to the doses given.
Huirong Fan; Ruixing Li; Yuan Gu; Duanyun Si; Changxiao Liu
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-2-9
Journal Detail:
Title:  Journal of chromatography. B, Analytical technologies in the biomedical and life sciences     Volume:  -     ISSN:  1873-376X     ISO Abbreviation:  -     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-2-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101139554     Medline TA:  J Chromatogr B Analyt Technol Biomed Life Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier B.V. All rights reserved.
Shenyang Pharmaceutical University, Shenyang 110015, China; State Key Laboratory of Drug Delivery Technology and Pharmacokinetics, Tianjin Institute of Pharmaceutical Research, Tianjin 300193, China.
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