Evidence map›Paper›PMID 24813932›Full record

ArticleJournal of chromatography. A2014

Quantitation of phosphatidic acid and lysophosphatidic acid molecular species using hydrophilic interaction liquid chromatography coupled to electrospray ionization high resolution mass spectrometry.

Alexander Triebl, Martin Trötzmüller, Anita Eberl, Pia Hanel, Jürgen Hartler, Harald C Köfeler

Open access · greenAbstract read
In one paragraph

Article in Journal of chromatography. A, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
2.4field-weighted citation impact, top 11% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

26 citing papers in PubMed, 71 citations in OpenAlex.

  1. Effects of Atmospheric COPlant, cell & environment · 2026
    Article
  2. Article
  3. Article
  4. Article
  5. Lipids as Emerging Biomarkers in Neurodegenerative Diseases.International journal of molecular sciences · 2023
    Review
  6. Acylation of glycerolipids in mycobacteria.Nature communications · 2023
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. HIGH RESOLUTION MASS SPECTROMETRY IN LIPIDOMICS.Mass spectrometry reviews · 2021
    Review
  12. Review
  13. Article
  14. Lipidomics from sample preparation to data analysis: a primer.Analytical and bioanalytical chemistry · 2020
    Review
  15. Article
  16. Article
  17. Review
  18. Review
  19. The glycerol backbone of phospholipids derives from noncarbohydrate precursors in starved lung cancer cells.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 1 country.

Alexander TrieblCore Facility for Mass Spectrometry, Center for Medical Research, Medical University of Graz, Stiftingtalstrasse 24, 8010 Graz, Austria.
Martin TrötzmüllerCore Facility for Mass Spectrometry, Center for Medical Research, Medical University of Graz, Stiftingtalstrasse 24, 8010 Graz, Austria; Omics Center Graz, Stiftingtalstrasse 24, 8010 Graz, Austria. Electronic address: martin.troetzmueller@medunigraz.at.
Anita EberlHEALTH - Institute for Biomedicine and Health Sciences, Joanneum Research Forschungsgesellschaft m.b.H., Graz, Austria.
Pia HanelCore Facility for Mass Spectrometry, Center for Medical Research, Medical University of Graz, Stiftingtalstrasse 24, 8010 Graz, Austria.
Jürgen HartlerInstitute for Genomics and Bioinformatics, Graz University of Technology, Graz, Austria; Omics Center Graz, Stiftingtalstrasse 24, 8010 Graz, Austria.
Harald C KöfelerCore Facility for Mass Spectrometry, Center for Medical Research, Medical University of Graz, Stiftingtalstrasse 24, 8010 Graz, Austria; Omics Center Graz, Stiftingtalstrasse 24, 8010 Graz, Austria.
Medical University of Graz · ATGraz University of Technology · ATJoanneum Research · AT

Funding

Austrian Science Fund FWF P 26148
6 · The paper itself

Abstract

A method for a highly selective and sensitive identification and quantitation of lysophosphatidic acid (LPA) and phosphatidic acid (PA) molecular species was developed using hydrophilic interaction liquid chromatography (HILIC) followed by negative-ion electrospray ionization high resolution mass spectrometry. Different extraction methods for the polar LPA and PA species were compared and a modified Bligh & Dyer extraction by addition of 0.1M hydrochloric acid resulted in a ≈1.2-fold increase of recovery for the 7 PA and a more than 15-fold increase for the 6 LPA molecular species of a commercially available natural mix compared to conventional Bligh & Dyer extraction. This modified Bligh & Dyer extraction did not show any artifacts resulting from hydrolysis of natural abundant phospholipids. The developed HILIC method is able to separate all PA and LPA species from major polar membrane lipid classes which might have suppressive effects on the minor abundant lipid classes of interest. The elemental compositions of intact lipid species are provided by the high mass resolution of 100,000 and high mass accuracy below 3ppm of the Orbitrap instrument. Additionally, tandem mass spectra were generated in a parallel data dependent acquisition mode in the linear ion trap to provide structural information at molecular level. Limits of quantitation were identified at 45fmol on column and the dynamic range reaches 20pmol on column, covering the range of natural abundance well. By applying the developed method to mouse brain it can be shown that phosphatidic acid contains less unsaturated fatty acids with PA 34:1 and PA 36:1 as the major species. In contrast, for LPA species a high content of polyunsaturated fatty acids (LPA 20:4 and LPA 22:6) was quantified.

Indexed as

AnimalsBrain ChemistryChromatography, LiquidHydrophobic and Hydrophilic InteractionsLysophospholipidsMaleMice, Inbred C57BLPhosphatidic AcidsSpectrometry, Mass, Electrospray Ionizationlysophosphatidic acidLysophospholipidsPhosphatidic AcidsHigh-resolution mass spectrometryHydrophilic interaction liquid chromatographyLysophosphatidic acidModified Bligh & DyerPhosphatidic acid

Identifiers

PMID24813932
PMCPMC6013042
OpenAlexW2085495656

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.