title: Determination of 6-keto-PGF1 alpha, 2,3-dinor-6-keto-PGF1 alpha, thromboxane B2, 2,3-dinor-thromboxane B2, PGE2, PGD2 and PGF2 alpha in human urine by gas chromatography-negative ion chemical ionization mass spectrometry.
abstract: A method for quantification of 6-keto-PGF1 alpha, 2,3-dinor-6-keto-PGF1 alpha TXB2, 2,3-dinor TXB2, PGE2, PGD2 and PGF2 alpha in human urine samples, using gas chromatography-negative ion chemical ionization mass spectrometry, is described. Deuterated analogues were used as internal standards. Methoximation was carried out in urine samples which were subsequently applied to phenylboronic acid cartridges, reversed-phase cartridges and thin-layer chromatography. The eluents were further derivatized to pentafluorobenzyl ester trimethylsilyl ethers for final quantification by gas chromatography-mass spectrometry. The overall recovery was 77% for tritiated 6-keto-PGF1 alpha and 55% for tritiated TXB2. Urinary levels of prostanoids were determined in a group of six volunteers before and after intake of the thromboxane synthase inhibitor Ridogrel, and related to creatinine clearance.
authors.affiliation: Janssen Research Foundation, Neuss, F.R.G.
authors.forename: C
authors.initials: C
authors.lastname: Weber
authors.forename: M
authors.initials: M
authors.lastname: Höller
authors.forename: J
authors.initials: J
authors.lastname: Beetens
authors.forename: F
authors.initials: F
authors.lastname: De Clerck
authors.forename: F
authors.initials: F
authors.lastname: Tegtmeier
mesh_terms: D015121:6-Ketoprostaglandin F1 alpha / Q000031:analogs & derivatives / Q000652:urine; D015237:Dinoprost / Q000652:urine; D015232:Dinoprostone / Q000652:urine; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D007202:Indicators and Reagents; D015230:Prostaglandin D2 / Q000652:urine; D011453:Prostaglandins / Q000652:urine*; D013929:Thromboxane B2 / Q000031:analogs & derivatives / Q000652:urine
chemical_list: D007202:Indicators and Reagents; D011453:Prostaglandins; D013929:Thromboxane B2; D015121:6-Ketoprostaglandin F1 alpha; C028965:2,3-dinor-thromboxane B2; C028290:2,3-dinor-6-ketoprostaglandin F1alpha; D015237:Dinoprost; D015232:Dinoprostone; D015230:Prostaglandin D2