Metabolomics

, Volume 9, Issue 2, pp 337–348 | Cite as

The influence of citrate, EDTA, and heparin anticoagulants to human plasma LC–MS lipidomic profiling

  • Vanessa Gonzalez-Covarrubias
  • Adrie Dane
  • Thomas Hankemeier
  • Rob J. Vreeken
Original Article

Abstract

Lipid profiling of human plasma by liquid chromatography-electrospray ionization coupled to mass spectrometry (LC–ESI-MS) is being used to identify biomarkers of health, disease, and treatment efficacy. However, there is no consensus on the choice of anticoagulant to perform and compare lipidomic measurements. This study assessed the effect of the anticoagulants citrate, EDTA, and heparin, on eight synthetic and 80 plasma lipids, and compared lipidomic data among anticoagulants. Lipid extraction was affected distinctively by the anticoagulant of choice likely due to the different physico-chemical properties among anticoagulants. Peak areas of seventy endogenous lipids showed significant differences between citrate–heparin and EDTA–heparin comparisons similar to those observed for synthetic lipids. Only ten endogenous lipid species showed comparable peak areas among the three anticoagulants. Correction by a structurally related internal standard only partly eliminated differences among anticoagulants (ANOVA, P value <0.001). However, comparisons among anticoagulants were possible for most endogenous lipids after correction of peak areas by the sum of areas of its lipid class. Our observations indicate that the choice of anticoagulant distinctively impact the peak response of most lipid species by LC–ESI-MS. Lipidomic data from plasma obtained with different anticoagulants should address differences in matrix effects and extraction procedures since ion strength, plasma pH, and different physicochemical properties among anticoagulants influence lipid extraction and LC–ESI-MS analysis.

Keywords

Anticoagulant EDTA Citrate Heparin Lipidomics LC–MS 

Notes

Acknowledgments

The excellent assistance of Peter Schouten from The Centre for Human Drug Research and enriching discussions with Amy Harms, Marek Noga, and Robert-Jan Raterink from the Netherlands Metabolomics Centre are gratefully acknowledged. This project was (co)financed by the Netherlands Metabolomics (NMC) which is part of the Netherlands Genomics Initiative/Netherlands Organisation for Scientific Research.

Supplementary material

11306_2012_450_MOESM1_ESM.xlsx (49 kb)
Supplementary material 1 (XLS 50 kb)

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Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  • Vanessa Gonzalez-Covarrubias
    • 1
    • 2
  • Adrie Dane
    • 1
    • 2
  • Thomas Hankemeier
    • 1
    • 2
  • Rob J. Vreeken
    • 1
    • 2
  1. 1.The Netherlands Metabolomics CentreLeidenThe Netherlands
  2. 2.LACDR, Analytical BiosciencesLeiden UniversityLeidenThe Netherlands

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