| Simultaneous measurement of three N-acylethanolamides in human bio-matrices using ultra performance liquid chromatography-tandem mass spectrometry. | |
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MedLine Citation:
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PMID: 20835819 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Endocannabinoids including N-acylethanolamides (NAEs) are a family of lipid-related signaling molecules implicated in many physiological and disease states which elicit their activities via the cannabinoid receptors. Anandamide (N-arachidonoylethanolamine, AEA) is the most characterized endocannabinoid and has been detected in many tissues and bio-fluids including human plasma and the central nervous system. The endocannabinoid-like NAEs, oleoylethanolamide (OEA) and palmitoylethanolamide (PEA) are described as entourage compounds because they illicit similar physiological effects to AEA but have little or no affinity for cannabinoid receptors. As entourage compounds, levels of these NAEs can greatly influence the efficacy of AEA yet there are few studies which measure these compounds in bio-fluids. Here we describe a rapid, highly sensitive, specific and highly reproducible ultra-high-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method for the analysis of AEA, OEA, and PEA in human bio-fluids including plasma, serum, breast milk, and amniotic fluids. This validated method using deuterated (AEA-d(8), OEA-d(2), and PEA-d(4)) internal standards, represents an improvement over previous analyses in terms of run time (4 min), limit of detection (0.9 fmol on column for AEA and PEA and 4.4 fmol on column for OEA), precision (relative standard deviations of peak areas: 3.1% (AEA), 2.9% (OEA), and 5.4% (PEA) for 133 fmol on column) and accuracy (95.1-104.9%). The sensitivity and precision of the validated method described here suggests that this method is suitable for the analysis of AEA, OEA, and PEA in clinical samples and may be utilized for the investigation of bio-matrices containing limited amounts of NAEs. |
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Authors:
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Patricia M W Lam; Timothy H Marczylo; Justin C Konje |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-09-12 |
Journal Detail:
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Title: Analytical and bioanalytical chemistry Volume: 398 ISSN: 1618-2650 ISO Abbreviation: Anal Bioanal Chem Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-10-20 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101134327 Medline TA: Anal Bioanal Chem Country: Germany |
Other Details:
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Languages: eng Pagination: 2089-97 Citation Subset: IM |
Affiliation:
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Endocannabinoid Research Group, Reproductive Sciences Section, Department of Cancer Studies and Molecular Medicine, University of Leicester, Robert Kilpatrick Clinical Sciences Building, Leicester Royal Infirmary, Infirmary Road, Leicester LE2 7LX, UK. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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