title: Selective and simultaneous determination of NSAIDs in equine plasma by HPLC with molecularly imprinted solid-phase extraction.
abstract: BACKGROUND
  Detection of nonsteroidal anti-inflammatory drugs (NSAIDs) in equine plasma is a significant analytical problem in veterinary anti-doping controls.
  
  
  RESULTS
  A new HPLC method coupled to selective extraction with molecularly imprinted polymers was developed for the simultaneous determination in equine plasma of the NSAIDs phenylbutazone, flunixin, oxyphenbutazone, ketoprofen and naproxen. The analytical performances of the method have been evaluated both in standard solutions and equine plasma samples. Recovery: Molecularly imprinted polymers solid-phase extraction for all NSAIDs was >94% with intra-day values below 15.0% and inter-day values below 20%. Method quantification limit was 0.01 μg/ml.
  
  
  CONCLUSIONS
  The developed method could be considered as a useful alternative to existing screening methods for the determination of NSAIDs in the context of studies of pharmacokinetics and anti-doping controls.
authors.affiliation: Department of Veterinary Science, University of Pisa, Via Livornese lato monte, 56122, San Piero a Grado, Pisa, Italy.
authors.forename: Valentina
authors.initials: V
authors.lastname: Meucci
authors.forename: Maria
authors.initials: M
authors.lastname: Minunni
authors.forename: Michele
authors.initials: M
authors.lastname: Vanni
authors.forename: Micaela
authors.initials: M
authors.lastname: Sgorbini
authors.forename: Michele
authors.initials: M
authors.lastname: Corazza
authors.forename: Luigi
authors.initials: L
authors.lastname: Intorre
mesh_terms: D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000097:blood*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006736:Horses / Q000097:blood*; D054802:Molecular Imprinting / Q000379:methods*; D052616:Solid Phase Extraction / Q000379:methods*
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal