Analysis of Omega-3 Fatty Acid Derived N-Acylethanolamines in Biological Matrices.

“The adequate quantification of endocannabinoids can be complex due to their low endogenous levels and structural diversity. Therefore, advanced analytical approaches, such as LC-MS, are used to measure endocannabinoids in plasma, tissues, and other matrices. Recent work has shown that endocannabinoids that are synthesized from n-3 fatty acids, such as docosahexaenoylethanolamide (DHEA) and eicosapentaenoylethanolamide (EPEA), have anti-inflammatory and anti-tumorigenic properties and stimulate synapse formation in neurites. Here, an LC-MS based method for the quantification of n-3 endocannabinoids DHEA and EPEA which is also suited to measure a wider spectrum of endocannabinoids is described. The chapter contains a step-by-step protocol for the analysis of n-3 endocannabinoids in plasma, including sample collection and solid phase extraction, LC-MS analysis, and data processing. Modifications to the protocol that allow quantifying n-3 endocannabinoids in tissues and cell culture media will also be discussed. Finally, conditions that alter endocannabinoid concentrations are briefly discussed.”

http://www.ncbi.nlm.nih.gov/pubmed/27245889

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