Evidence map›Paper›PMID 19784391›Full record

ArticleMolecular vision2009

The influence of sublethal blue light exposure on human RPE cells.

Cora Roehlecke, Annette Schaller, Lilla Knels, Richard H W Funk

Open access · greenAbstract read
In one paragraph

Article in Molecular vision, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

36 citing papers in PubMed, 84 citations in OpenAlex.

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  13. Photobiomodulation of the Visual System and Human Health.International journal of molecular sciences · 2020
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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

4 authors at 1 institution in 1 country.

Cora RoehleckeInstitute of Anatomy, TU Dresden, Dresden, Germany. cora.roehlecke@tu-dresden.de
Annette Schaller
Lilla Knels
Richard H W Funk
TU Dresden · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo evaluate the in vitro response of retinal pigment epithelial (RPE) cells to a nonlethal dose of blue light.

methodsThe human RPE cell line ARPE-19 was irradiated with blue light (405 nm) at an output power of 1 mW/cm(2) or 0.3 mW/cm(2). The following parameters were studied: metabolic activity; apoptosis; reactive oxygen species (ROS) production; mitochondrial membrane potential (MMP); ultrastructural changes of mitochondria; production of advanced glycation endproducts (AGEs); and stress-related cellular proteins.

resultsNonlethal doses of blue light irradiation significantly reduced ARPE-19 metabolic activity and MMP while increasing intracellular ROS levels and expression of stress-related proteins heme oxygenase-1 (HO-1), osteopontin, heat shock protein 27 (Hsp-27), manganese superoxide dismutase (SOD-Mn), and cathepsin D. Blue light irradiation also induced ultrastructural conformation changes in mitochondria, resulting in the appearance of giant mitochondria after 72 h. We further found enhanced formation of AGEs, particularly N(epsilon)-(carboxymethyl) lysine (CML) modifications, and a delay in the cell cycle.

conclusionsARPE-19 cells avoid cell death and recover from blue light irradiation by activating a host of defense mechanisms while simultaneously triggering cellular stress responses that may be involved in RPE disease development. Continuous light exposure can therefore detrimentally affect metabolically stressed RPE cells. This may have implications for pathogenesis of age-related macular degeneration.

Indexed as

LightApoptosisCell CycleCell LineCell SurvivalEpithelial CellsFlow CytometryHumansIntracellular SpaceMembrane Potential, MitochondrialMitochondriaOrganelle ShapeOxidative StressPigment Epithelium of EyeReactive Oxygen SpeciesReactive Oxygen Species

Identifiers

PMID19784391
PMCPMC2751800
OpenAlexW2156684567

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.