Parallel artificial liquid membrane extraction as an efficient tool for removal of phospholipids from human plasma

Research output: Contribution to journalJournal articleResearchpeer-review

  • Kristine Skoglund Ask
  • Turgay Bardakci
  • Marthe Petrine Parmer
  • Trine Grønhaug Halvorsen
  • Elisabeth Leere Øiestad
  • Pedersen-Bjergaard, Stig
  • Astrid Gjelstad
Generic Parallel Artificial Liquid Membrane Extraction (PALME) methods for non-polar basic and non-polar acidic drugs from human plasma were investigated with respect to phospholipid removal. In both cases, extractions in 96-well format were performed from plasma (125μL), through 4μL organic solvent used as supported liquid membranes (SLMs), and into 50μL aqueous acceptor solutions. The acceptor solutions were subsequently analysed by liquid chromatography-tandem mass spectrometry (LC-MS/MS) using in-source fragmentation and monitoring the m/z 184→184 transition for investigation of phosphatidylcholines (PC), sphingomyelins (SM), and lysophosphatidylcholines (Lyso-PC). In both generic methods, no phospholipids were detected in the acceptor solutions. Thus, PALME appeared to be highly efficient for phospholipid removal. To further support this, qualitative (post-column infusion) and quantitative matrix effects were investigated with fluoxetine, fluvoxamine, and quetiapine as model analytes. No signs of matrix effects were observed. Finally, PALME was evaluated for the aforementioned drug substances, and data were in accordance with European Medicines Agency (EMA) guidelines.
Original languageEnglish
JournalJournal of Pharmaceutical and Biomedical Analysis
Volume129
Pages (from-to)229-236
Number of pages8
ISSN0731-7085
DOIs
Publication statusPublished - 2016

ID: 164382691