Evidence map›Paper›PMID 33467052›Full record

ArticleBiomolecules2021

The Influence of Melatonin and Light on VEGF Secretion in Primary RPE Cells.

Alexa Klettner, Miriam Kampers, Daniela Töbelmann, Johann Roider, Manuela Dittmar

Open access · goldAbstract read
In one paragraph

Article in Biomolecules, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

15 citing papers in PubMed, 25 citations in OpenAlex.

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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.

Alexa KlettnerDepartment of Ophthalmology, Campus Kiel, University Medical Center Schleswig-Holstein (UKSH), 24105 Kiel, Germany.ORCID 0000-0002-2709-1059
Miriam KampersDepartment of Ophthalmology, Campus Kiel, University Medical Center Schleswig-Holstein (UKSH), 24105 Kiel, Germany.
Daniela TöbelmannDepartment of Human Biology, Zoological Institute, University of Kiel, 24118 Kiel, Germany.
Johann RoiderDepartment of Ophthalmology, Campus Kiel, University Medical Center Schleswig-Holstein (UKSH), 24105 Kiel, Germany.
Manuela DittmarDepartment of Human Biology, Zoological Institute, University of Kiel, 24118 Kiel, Germany.
Christian-Albrechts-Universität zu Kiel · DE

Funding

Stifterverband Grant H17057015020215353
6 · The paper itself

Abstract

(1) Background: Retinal pigment epithelial cells (RPE) cells constitutively secrete vascular endothelial growth factor (VEGF) in the retina, protecting the neuronal cells and the choroid. Increased VEGF secretion, however, can result in neovascularization and edema. Many factors regulate VEGF secretion. In this study, we investigated the effect of external stimuli in relation to diurnal rhythm on constitutive VEGF secretion. (2) Methods: Single-eye RPE cell culture was prepared from porcine eyes. RPE cells were cultured in darkness, treated with daylight or room light, and treated with melatonin at different time frames, either respectively or in combination. Supernatants were collected and VEGF content evaluated using ELISA. Expression of the clock protein BMAL1 was evaluated with Western blot. (3) Results: VEGF secretion of the RPE shows a diurnal rhythm. While the rhythm is not influenced by either light or melatonin, the amount of secreted VEGF can be increased by nocturnal melatonin, especially in combination with morning daylight. These findings disclose another layer of VEGF regulation in the retina.

Indexed as

LightAnimalsARNTL Transcription FactorsCells, CulturedCircadian RhythmEpithelial CellsMelatoninRetinal Pigment EpitheliumSwineVascular Endothelial Growth Factor AARNTL Transcription FactorsMelatoninVascular Endothelial Growth Factor Adiurnal rhythm, BMAL1, light inductionmelatoninretinal pigment epithelium (RPE)vascular endothelial growth factor (VEGF)

Identifiers

PMID33467052
PMCPMC7830335
OpenAlexW3123969394

What OpenQuestion holds

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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.