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- Boström, EmmaUppsala universitet,Avdelningen för farmakokinetik och läkemedelsterapi,Farmakometri (author)
The Use of Liquid Chromatography/Mass Spectrometry for Quantitative Analysis of Oxycodone, Oxymorphone and Noroxycodone in Ringer Solution, Rat Plasma and Rat Brain Tissue
- Article/chapterEnglish2004
Publisher, publication year, extent ...
- 2004-10-04
- Wiley,2004
- printrdacarrier
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- LIBRIS-ID:oai:DiVA.org:uu-95634
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-95634URI
- https://doi.org/10.1002/rcm.1658DOI
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- Language:English
- Summary in:English
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- Sensitive and reproducible methods for the determination of oxycodone, oxymorphone and noroxycodone in Ringer solution, rat plasma and rat brain tissue by liquid chromatography/mass spectrometry are described. Deuterated analogs of the substances were used as internal standards. Samples in Ringer solution were analyzed by direct injection of 10 microL Ringer solution diluted by an equal volume of water. The limit of quantification was 0.5 ng/mL and the method was linear in the range of 0.5-150 ng/mL for all substances. To analyze oxycodone and oxymorphone in rat plasma, 50 microL of plasma were precipitated with acetonitrile, and the supernatant was directly injected onto the column. To analyze oxycodone, oxymorphone and noroxycodone in rat plasma, 100 microL of rat plasma were subjected to a C18 solid-phase extraction (SPE) procedure, before reconstituting in mobile phase and injection onto the column. For both methods the limit of quantification in rat plasma was 0.5 ng/mL and the methods were linear in the range of 0.5-250 ng/mL for all substances. To analyze the content of oxycodone, oxymorphone and noroxycodone in rat brain tissue, 100 microL of the brain homogenate supernatant were subjected to a C18 SPE procedure. The limit of quantification of oxycodone was 20 ng/g brain, and for oxymorphone and noroxycodone 4 ng/g brain, and the method was linear in the range of 20-1000 ng/g brain for oxycodone and 4-1000 ng/g brain for oxymorphone and noroxycodone. All methods utilized a mobile phase of 5 mM ammonium acetate in 45% acetonitrile, and a SB-CN column was used for separation. The total run time of all methods was 9 min. The intra-day precision and accuracy were <11.3% and <+/-14.9%, respectively, and the inter-day precision and accuracy were <14.9% and <+/-6.5%, respectively, for all the concentrations and matrices described.
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- Jansson, BrittUppsala universitet,Avdelningen för farmakokinetik och läkemedelsterapi(Swepub:uu)bja28141 (author)
- Hammarlund-Udenaes, MargaretaUppsala universitet,Avdelningen för farmakokinetik och läkemedelsterapi(Swepub:uu)marghamm (author)
- Simonsson, Ulrika S. H.Uppsala universitet,Avdelningen för farmakokinetik och läkemedelsterapi(Swepub:uu)usv12211 (author)
- Uppsala universitetAvdelningen för farmakokinetik och läkemedelsterapi (creator_code:org_t)
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- In:Rapid Communications in Mass Spectrometry: Wiley18:21, s. 2565-25760951-41981097-0231
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