title: Specific and rapid quantification of 8-iso-prostaglandin F2alpha in urine of healthy humans and patients with Zellweger syndrome by gas chromatography-tandem mass spectrometry.
abstract: 8-iso-Prostaglandin F2alpha (8-iso-PGF2alpha) is currently discussed as a potential index parameter of oxidative stress in vivo. We describe in this article a fully validated gas chromatographic-tandem mass spectrometric method for the quantitative determination of 8-iso-PGF2alpha in human urine. The method is highly specific and requires a single thin-layer chromatographic step for sample purification. Inter- and intraday imprecision were below 8%. Mean inaccuracy was 5.3% for added levels of 8-iso-PGF2alpha up to 2000 pg/ml of urine. We measured highly elevated excretion of 8-iso-PGF2alpha in the urine of children with peroxisomal beta-oxidation deficiency, i.e. Zellweger syndrome, (63.3+/-16.6 ng/mg creatinine) compared to that of healthy children (0.51+/-0.16 ng/mg creatinine) (mean+/-S.D., both n=5). The method could be useful for diagnosing Zellweger syndrome and for investigating the utility of 8-iso-PGF2alpha as a novel marker for oxidative stress in vivo in man.
authors.affiliation: Institute of Clinical Pharmacology, Hannover Medical School, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Tsikas
authors.forename: E
authors.initials: E
authors.lastname: Schwedhelm
authors.forename: J
authors.initials: J
authors.lastname: Fauler
authors.forename: F M
authors.initials: FM
authors.lastname: Gutzki
authors.forename: E
authors.initials: E
authors.lastname: Mayatepek
authors.forename: J C
authors.initials: JC
authors.lastname: Frölich
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000652:urine; D002648:Child; D015237:Dinoprost / Q000031:analogs & derivatives* / Q000652:urine; D028441:F2-Isoprostanes; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D006801:Humans; D008297:Male; D018384:Oxidative Stress; D012680:Sensitivity and Specificity; D015211:Zellweger Syndrome / Q000175:diagnosis / Q000652:urine*
chemical_list: D015415:Biomarkers; D028441:F2-Isoprostanes; C075750:8-epi-prostaglandin F2alpha; D015237:Dinoprost