Meet Inspiring Speakers and Experts at our 3000+ Global Conference Series LLC LTD Events with over 1000+ Conferences, 1000+ Symposiums
and 1000+ Workshops on Medical, Pharma, Engineering, Science, Technology and Business.

Explore and learn more about Conference Series LLC LTD : World’s leading Event Organizer

Back

13th International Conference on Metabolomics and Systems Biology

Zurich, Switzerland

Mikhail Y Golovko

Mikhail Y Golovko

University of North Dakota, USA

Title: Tissue lipidomics analysis of eicosanoids using tissue microwave fixation and chiral LC-MS/ MS quantification

Biography

Biography: Mikhail Y Golovko

Abstract

A number of tissue bioactive lipids, including eicosanoids, are dramatically and instantly increased during tissue removal from the body and handling, thus altering quantification results for their basal levels. In addition to enzymatic synthesis, eicosanoid like isoprostanes are also produced upon oxidative stress. We, and others, have demonstrated that high energy focused microwave irradiation (MW) prevents a rapid, 30-fold increase in brain and 150-fold increase in kidney eicosanoid mass within seconds upon tissue extraction from the body. In addition, MW is also required to prevent postmortem alterations of another bioactive lipid group, endocannabinoid, including 2-arachydonoylglycerol (2-AG) and N-arachidonoylethanolamine. We validated stability of endogenous eicosanoids and endocannabinoids under tissue exposure to MW and the application of MW to measure true basal levels of prostaglandins, isoprostanes, and endocannabinoids. We also demonstrated that chiral chromatography is required to differentiate between eicosanoids and non-enzymatically produced isoprostanes. Our results indicate that MW combined with chiral LC-MS/MS is a safe and required technique to quantify tissue levels of a number of bioactive lipids including eicosanoids.