Evaluation Of BEH C18, BEH HILIC, And HSS T3 (C18 ... - PubMed

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Abstract

Glutathione (GSH), glutathione disulfide (GSSG), and ophthalmic acid (OA) are important biological oxidative stress biomarkers to be monitored in pathological and toxicological studies. With the advent of liquid chromatography tandem mass spectrometry (LC-MS-MS) technology, sensitive and selective analysis of these biomarkers in biological samples is now being performed routinely. Due to the hydrophilic and polar natures of GSH and its endogenous derivatives, achieving good retention, resolution, and peak shape is often a chromatographic challenge. In this study, three ultra-performance (UP) LC column chemistries (namely, BEH C18, BEH HILIC, and HSS T3 [C18]) are evaluated for the UPLC-MS-MS analysis of GSH, GSSG, and OA extracted from mouse liver and human plasma samples. The chromatographic parameters evaluated are retentivity, tailing factor, MS sensitivity, and resolution of the three analytes. Based on the optimized method for each column chemistry, our results indicate that the HSS T3 (C18) column chemistry affords the best retention and separation of these analytes when operated under the ultra high-pressure chromatographic conditions.

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