کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10533145 | 961851 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Simultaneous analysis of prostaglandin glyceryl esters and prostaglandins by electrospray tandem mass spectrometry
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
A high-performance liquid chromatography (HPLC) positive-ion electrospray ionization tandem mass spectrometry method for the quantification of prostaglandin glyceryl esters (PG-Gs), a newly discovered class of eicosanoids, is described. All four PG-Gs (PGE2-G, PGD2-G, PGF2α-G, and 6-keto-PGF1α-G) and the prostaglandins (PGs) that are formed by their hydrolysis are simultaneously quantified. Analytes were purified via reverse-phase solid-phase extraction, separated by reverse-phase HPLC, and quantified on a triple-quadrupole mass spectrometer using selected reaction monitoring. Quantification was achieved by stable isotope dilution employing penta-deuterated (PG-Gs) or tetra-deuterated (PGs) analogs. Analyte recovery from cell culture medium was >43% for all analytes at four different concentration levels. The limit of quantification is in the range of 25 fmol on-column for each analyte and the analytes exhibit a linear response over approximately a 500-fold range. This method allows simultaneous profiling of several PG-Gs and PGs without multistep sample purification or derivatization.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytical Biochemistry - Volume 343, Issue 2, 15 August 2005, Pages 203-211
Journal: Analytical Biochemistry - Volume 343, Issue 2, 15 August 2005, Pages 203-211
نویسندگان
Philip J. Kingsley, Carol A. Rouzer, Samir Saleh, Lawrence J. Marnett,