Eileen Moritz1, Danilo Wegner2, Stefan Groß3, Martin Bahls3, Marcus Dörr3, Stephan B Felix3, Till Ittermann4, Stefan Oswald2, Matthias Nauck5, Nele Friedrich5, Rainer H Böger6, Günter Daum7, Edzard Schwedhelm6, Bernhard H Rauch8. 1. Institute of Pharmacology, Department of General Pharmacology, University Medicine Greifswald, Germany; Institute of Clinical Pharmacology and Toxicology, University Medical Center Hamburg-Eppendorf, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Germany. 2. Institute of Pharmacology, Department of Clinical Pharmacology, University Medicine Greifswald, Germany. 3. Department of Internal Medicine B, University Medicine Greifswald, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Greifswald, Germany. 4. German Center for Cardiovascular Research (DZHK), Partner Site Greifswald, Germany; Institute for Community Medicine, University Medicine Greifswald, Germany. 5. German Center for Cardiovascular Research (DZHK), Partner Site Greifswald, Germany; Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Germany. 6. Institute of Clinical Pharmacology and Toxicology, University Medical Center Hamburg-Eppendorf, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Germany. 7. German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Germany; Clinic and Polyclinic for Vascular Medicine, University Heart Center, University Medical Center Hamburg-Eppendorf, Germany. 8. Institute of Pharmacology, Department of General Pharmacology, University Medicine Greifswald, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Greifswald, Germany. Electronic address: Bernhard.Rauch@uni-greifswald.de.
Abstract
BACKGROUND: The bioactive signaling lipid sphingosine-1-phosphate (S1P) is a potential biomarker for cardiovascular disease (CVD). To date, no reference intervals for S1P have been defined. This study aims to establish a reference range for serum S1P in healthy individuals. METHODS: We determined reference intervals for S1P levels according to gender and age in a sample of 1339 healthy participants of the Study of Health in Pomerania (SHIP)-TREND cohort after exclusion of subjects with CVD, diabetes mellitus, hypertension, metabolic syndrome, elevated liver enzymes, chronic kidney disease stadium III or IV, or body mass index (BMI)>30kg/m2. Serum S1P was measured by liquid chromatography-tandem mass spectrometry. RESULTS: The median age of the participants was 41 (25th; 75th percentile 32; 51) years, 65% were women. The median serum concentration of S1P was 0.804 (0.694; 0.920) μmol/L. No association with gender and age was observed. The overall reference interval was 0.534-1.242μmol/L (2.5th; 97.5th percentile). Further exclusion of smokers, individuals with BMI>25kg/m2 or elevated lipid levels did not significantly affect median S1P concentrations. CONCLUSIONS: This study provides reference intervals for serum S1P in healthy individuals. Total serum S1P concentrations vary irrespectively of age, gender, BMI or smoking status.
BACKGROUND: The bioactive signaling lipidsphingosine-1-phosphate (S1P) is a potential biomarker for cardiovascular disease (CVD). To date, no reference intervals for S1P have been defined. This study aims to establish a reference range for serum S1P in healthy individuals. METHODS: We determined reference intervals for S1P levels according to gender and age in a sample of 1339 healthy participants of the Study of Health in Pomerania (SHIP)-TREND cohort after exclusion of subjects with CVD, diabetes mellitus, hypertension, metabolic syndrome, elevated liver enzymes, chronic kidney disease stadium III or IV, or body mass index (BMI)>30kg/m2. Serum S1P was measured by liquid chromatography-tandem mass spectrometry. RESULTS: The median age of the participants was 41 (25th; 75th percentile 32; 51) years, 65% were women. The median serum concentration of S1P was 0.804 (0.694; 0.920) μmol/L. No association with gender and age was observed. The overall reference interval was 0.534-1.242μmol/L (2.5th; 97.5th percentile). Further exclusion of smokers, individuals with BMI>25kg/m2 or elevated lipid levels did not significantly affect median S1P concentrations. CONCLUSIONS: This study provides reference intervals for serum S1P in healthy individuals. Total serum S1P concentrations vary irrespectively of age, gender, BMI or smoking status.
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