TY - JOUR
T1 - Quantification of Globotriaosylsphingosine in Plasma and Urine of Fabry Patients by Stable Isotope Ultraperformance Liquid Chromatography-Tandem Mass Spectrometry
AU - Gold, Henrik
AU - Mirzaian, Mina
AU - Dekker, Nick
AU - Joao Ferraz, Maria
AU - Lugtenburg, Johan
AU - Codée, Jeroen D. C.
AU - van der Marel, Gijs A.
AU - Overkleeft, Herman S.
AU - Linthorst, Gabor E.
AU - Groener, Johanna E. M.
AU - Aerts, Johannes M.
AU - Poorthuis, Ben J. H. M.
PY - 2013
Y1 - 2013
N2 - BACKGROUND: Biochemical markers that accurately reflect the severity and progression of disease in patients with Fabry disease and their response to treatment are urgently needed. Globotriaosylsphingosine, also called lysoglobotriaosylceramide (lysoGb3), is a promising candidate biomarker. METHODS: We synthesized lysoGb3 and isotope-labeled [5,6,7,8,9]C-13(5)-lysoGb3 (internal standard). After addition of the internal standard to 25 mu L plasma or 400 mu L urine from patients with Fabry disease and healthy controls, samples were extracted with organic solvents and the lysoGb3 concentration was quantified by UPLCESI-MS/MS (ultraperformance liquid chromatography-electrospray ionization-tandem mass spectrometry). Calibration curves were constructed with control plasma and urine supplemented with lysoGb3. In addition to lysoGb3, lyso-ene-Gb3 was quantified. Quantification was achieved by multiple reaction monitoring of the transitions m/z 786.4 > 282.3 [M+H](+) for lysoGb3, m/z 791.4 > 287.3 [M+H](+) for [5,6,7,8,9]C-13(5)-lysoGb3, and 784.4 > 280.3 [M+H](+) for lyso-ene-Gb3. RESULTS: The mean (SD) plasma lysoGb3 concentration from 10 classically affected Fabry hemizygotes was 94.4 (25.8) pmol/mL (range 52.7-136.8 pmol/mL), from 10 classically affected Fabry heterozygotes 9.6 (5.8) pmol/mL (range 4.1-23.5 pmol/mL), and from 20 healthy controls 0.4 (0.1) pmol/mL (range 0.3-0.5 pmol/mL). Lyso-ene-Gb3 concentrations were 10%-25% of total lysoGb3. The urine concentration of lysoGb3 was 40-480 times lower than in corresponding plasma samples. Lyso-ene-Gb3 concentrations in urine were comparable or even higher than the corresponding lysoGb3 concentrations. CONCLUSIONS: This assay for the quantification of lysoGb3 and lyso-ene-Gb3 in human plasma and urine samples will be an important tool in the diagnosis of Fabry disease and for monitoring the effect of enzyme replacement therapy in patients with Fabry disease. (C) 2012 American Association for Clinical Chemistry
AB - BACKGROUND: Biochemical markers that accurately reflect the severity and progression of disease in patients with Fabry disease and their response to treatment are urgently needed. Globotriaosylsphingosine, also called lysoglobotriaosylceramide (lysoGb3), is a promising candidate biomarker. METHODS: We synthesized lysoGb3 and isotope-labeled [5,6,7,8,9]C-13(5)-lysoGb3 (internal standard). After addition of the internal standard to 25 mu L plasma or 400 mu L urine from patients with Fabry disease and healthy controls, samples were extracted with organic solvents and the lysoGb3 concentration was quantified by UPLCESI-MS/MS (ultraperformance liquid chromatography-electrospray ionization-tandem mass spectrometry). Calibration curves were constructed with control plasma and urine supplemented with lysoGb3. In addition to lysoGb3, lyso-ene-Gb3 was quantified. Quantification was achieved by multiple reaction monitoring of the transitions m/z 786.4 > 282.3 [M+H](+) for lysoGb3, m/z 791.4 > 287.3 [M+H](+) for [5,6,7,8,9]C-13(5)-lysoGb3, and 784.4 > 280.3 [M+H](+) for lyso-ene-Gb3. RESULTS: The mean (SD) plasma lysoGb3 concentration from 10 classically affected Fabry hemizygotes was 94.4 (25.8) pmol/mL (range 52.7-136.8 pmol/mL), from 10 classically affected Fabry heterozygotes 9.6 (5.8) pmol/mL (range 4.1-23.5 pmol/mL), and from 20 healthy controls 0.4 (0.1) pmol/mL (range 0.3-0.5 pmol/mL). Lyso-ene-Gb3 concentrations were 10%-25% of total lysoGb3. The urine concentration of lysoGb3 was 40-480 times lower than in corresponding plasma samples. Lyso-ene-Gb3 concentrations in urine were comparable or even higher than the corresponding lysoGb3 concentrations. CONCLUSIONS: This assay for the quantification of lysoGb3 and lyso-ene-Gb3 in human plasma and urine samples will be an important tool in the diagnosis of Fabry disease and for monitoring the effect of enzyme replacement therapy in patients with Fabry disease. (C) 2012 American Association for Clinical Chemistry
U2 - https://doi.org/10.1373/clinchem.2012.192138
DO - https://doi.org/10.1373/clinchem.2012.192138
M3 - Article
C2 - 23237761
SN - 0009-9147
VL - 59
SP - 547
EP - 556
JO - Clinical Chemistry
JF - Clinical Chemistry
IS - 3
ER -