title: A fast one-step extraction and UPLC-MS/MS analysis for E2/D 2 series prostaglandins and isoprostanes.
abstract: Prostaglandins (PG) and isoprostanes (iso-PG) may be derived through cyclooxygenase or free radical pathways and are important signaling molecules that are also robust biomarkers of oxidative stress. Their quantification is important for understanding many biological processes where PG, iso-PG, or oxidative stress are involved. One of the common methods for PG and iso-PG quantifications is LC-MS/MS that allows a highly selective, sensitive, simultaneous analysis for prostanoids without derivatization. However, the currently used LC-MS/MS methods require a multi-step extraction and a long (within an hour) LC separation to achieve simultaneous separation and analysis of the major iso-PG. The developed and validated for brain tissue analysis one-step extraction protocol and UPLC-MS/MS method significantly increases the recovery of the PG extraction up to 95 %, and allows for a much faster (within 4 min) major iso-PGE2 and -PGD2 separation with 5 times narrower chromatographic peaks as compared to previously used methods. In addition, it decreases the time and cost of analysis due to the one-step extraction approach performed in disposable centrifuge tubes. All together, this significantly increases the sensitivity, and the time and cost efficiency of the PG and iso-PG analysis.
authors: Department of Pharmacology, Physiology, and Therapeutics, School of Medicine and Health Sciences, University of North Dakota, 501 N. Columbia Rd., Grand Forks, ND 58202-9037, USA.
authors: Stephen A
authors: SA
authors: Brose
authors: Andrew G
authors: AG
authors: Baker
authors: Mikhail Y
authors: MY
authors: Golovko
mesh_terms: D000818:Animals; D001923:Brain Chemistry; D002851:Chromatography, High Pressure Liquid / Q000191:economics / Q000379:methods*; D015232:Dinoprostone / Q000032:analysis / Q000302:isolation & purification; D028421:Isoprostanes / Q000032:analysis / Q000302:isolation & purification*; D057230:Limit of Detection; D008297:Male; D051379:Mice; D015230:Prostaglandin D2 / Q000032:analysis / Q000302:isolation & purification; D011453:Prostaglandins / Q000032:analysis / Q000302:isolation & purification*; D053719:Tandem Mass Spectrometry / Q000191:economics / Q000379:methods*; D013997:Time Factors
chemical_list: D028421:Isoprostanes; D011453:Prostaglandins; D015232:Dinoprostone; D015230:Prostaglandin D2
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