Evidence map›Paper›PMID 21573170›Full record

ArticlePloS one2011

Human tear fluid lipidome: from composition to function.

Antti H Rantamäki, Tuulikki Seppänen-Laakso, Matej Oresic, Matti Jauhiainen, Juha M Holopainen

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed
12.9field-weighted citation impact, top 1% 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

51 citing papers in PubMed, 144 citations in OpenAlex.

  1. A Droplet Evaporimeter for Evaluating Eye Care Formulations.Translational vision science & technology · 2026
    Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. Nonpolar Lipids Contribute to Midday Fogging During Scleral Lens Wear.Investigative ophthalmology & visual science · 2023
    Article
  11. Review
  12. Review
  13. Review
  14. Article
  15. Article
  16. Antimicrobial Tear Lipids in the Ocular Surface Defense.Frontiers in cellular and infection microbiology · 2022
    Review
  17. Review
  18. Article
  19. Hyaluronic acid-lipid binding.BMC chemistry · 2021
    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

5 authors at 3 institutions in 1 country.

Antti H RantamäkiHelsinki Eye Lab, Department of Ophthalmology, University of Helsinki, Helsinki, Finland.
Tuulikki Seppänen-Laakso
Matej Oresic
Matti Jauhiainen
Juha M Holopainen
University of Helsinki · FIVTT Technical Research Centre of Finland · FIInstitute for Molecular Medicine Finland · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We have explored human aqueous tear fluid lipidome with an emphasis to identify the major lipids. We also address the physiological significance of the lipidome. The tears were analysed using thin layer chromatographic, enzymatic and mass spectrometric techniques. To emphasize the physiological aspect of the lipidome, we modelled the spreading of the non-polar tear fluid lipids at air-water interface in macroscopic scale with olive oil and egg yolk phosphatidylcholine. Based on enzymatic analysis the respective concentrations of choline-containing lipids, triglycerides, and cholesteryl esters were 48±14, 10±0, and 21±18 µM. Ultra performance liquid chromatography quadrupole time of flight mass spectrometry analysis showed that phosphatidylcholine and phosphatidylethanolamine were the two most common polar lipids comprising 88±6% of all identified lipids. Triglycerides were the only non-polar lipids detected in mass spectrometric analysis i.e. no cholesteryl or wax esters were identified. The spreading experiments show that the presence of polar lipids is an absolute necessity for a proper spreading of non-polar tear fluid lipids. We provide evidence that polar lipids are the most common lipid species. Furthermore, we provide a physiological rationale for the observed lipid composition. The results open insights into the functional role of lipids in the tear fluid and also aids in providing new means to understand and treat diseases of the ocular surface.

Indexed as

Lipid MetabolismAdultBlotting, WesternChromatography, Thin LayerEnzyme AssaysHumansLipidsMass SpectrometryMiddle AgedOlive OilPlant OilsTearsTime FactorsYoung AdultLipidsOlive OilPlant Oils

Identifiers

PMID21573170
PMCPMC3088682
OpenAlexW2003469863

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.