Evidence map›Paper›PMID 21103056›Full record

ArticlePloS one2010

Long-lasting priming of endothelial cells by plasma melatonin levels.

Eduardo Koji Tamura, Pedro Augusto Fernandes, Marina Marçola, Sanseray da Silveira Cruz-Machado, Regina Pekelmann Markus

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.1field-weighted citation impact, top 14% 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

18 citing papers in PubMed, 77 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Melatonin andFrontiers in cellular and infection microbiology · 2019
    Article
  6. Review
  7. β-Adrenoceptors Trigger Melatonin Synthesis in Phagocytes.International journal of molecular sciences · 2018
    Article
  8. Review
  9. Update on melatonin receptors: IUPHAR Review 20.British journal of pharmacology · 2016
    Review
  10. Review
  11. Review
  12. Melatonin: buffering the immune system.International journal of molecular sciences · 2013
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. 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 1 institution in 1 country.

Eduardo Koji TamuraLaboratory of Chronopharmacology, Department of Physiology, Institute of Bioscience, Universidade de São Paulo, São Paulo, São Paulo, Brazil.
Pedro Augusto Fernandes
Marina Marçola
Sanseray da Silveira Cruz-Machado
Regina Pekelmann Markus
Universidade de São Paulo · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEndothelial cells are of great interest for cell therapy and tissue engineering. Understanding the heterogeneity among cell lines originating from different sources and culture protocols may allow more standardized material to be obtained. In a recent paper, we showed that adrenalectomy interferes with the expression of membrane adhesion molecules on endothelial cells maintained in culture for 16 to 18 days. In addition, the pineal hormone, melatonin, reduces the adhesion of neutrophils to post-capillary veins in rats. Here, we evaluated whether the reactivity of cultured endothelial cells maintained for more than two weeks in culture is inversely correlated to plasma melatonin concentration. METHODOLOGY/PRINCIPAL

findingsThe nocturnal levels of melatonin were manipulated by treating rats with LPS. Nocturnal plasma melatonin, significantly reduced two hours after LPS treatment, returned to control levels after six hours. Endothelial cells obtained from animals that had lower nocturnal melatonin levels significantly express enhanced adhesion molecules and iNOS, and have more leukocytes adhered than cells from animals that had normal nocturnal levels of melatonin (naïve or injected with vehicle). Endothelial cells from animals sacrificed two hours after a simultaneous injection of LPS and melatonin present similar phenotype and function than those obtained from control animals. Analyzing together all the data, taking into account the plasma melatonin concentration versus the expression of adhesion molecules or iNOS we detected a significant inverse correlation. CONCLUSIONS/SIGNIFICANCE: Our data strongly suggest that the plasma melatonin level primes endothelial cells "in vivo," indicating that the state of the donor animal is translated to cells in culture and therefore, should be considered for establishing cell banks in ideal conditions.

Indexed as

AnimalsCell AdhesionCells, CulturedCircadian RhythmEndothelial CellsFluorescent Antibody TechniqueIntercellular Adhesion Molecule-1Leukocytes, MononuclearLipopolysaccharidesMelatoninNeutrophilsNitric Oxide Synthase Type IIPlatelet Endothelial Cell Adhesion Molecule-1RatsRats, WistarTime FactorsIntercellular Adhesion Molecule-1LipopolysaccharidesMelatoninNitric Oxide Synthase Type IIPlatelet Endothelial Cell Adhesion Molecule-1

Identifiers

PMID21103056
PMCPMC2980478
OpenAlexW2036135908

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Registered trials

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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.