Evidence map›Paper›PMID 23675521›Full record

ArticlePloS one2013

Retinal pigmented epithelial cells cytotoxicity and apoptosis through activation of the mitochondrial intrinsic pathway: role of indocyanine green, brilliant blue and implications for chromovitrectomy.

Fernando M Penha, Marianne Pons, Elaine Fiod Costa, Nilana Meza Tenório Barros, Eduardo B Rodrigues, Emmerson Badaró Cardoso, Eduardo Dib, Mauricio Maia, Maria E Marin-Castaño, Michel Eid Farah

Abstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
–field-weighted citation impact
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

13 citing papers in PubMed.

  1. Macular peeling-induced retinal damage: clinical and histopathological evaluation after using different dyes.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2018
    Trial
  2. Chromovitrectomy: current evidence, emerging technologies, and practical applications in vitreoretinal surgery.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
    Review
  3. Application of digital surgery in ophthalmology: intraoperative display of pre-operative enface OCT and ERM peeling unveiling the role of ERM adherence.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Intraocular use of acid violet 17 at a concentration of 1.5 mg/ml is not safe.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2017
    Article
  9. Article
  10. Article
  11. Article
  12. Testing the effects of the dye acid violet-17 on retinal function for an intraocular application in vitreo-retinal surgery.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2014
    Article
  13. 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

10 authors.

Fernando M PenhaDepartamento de Oftalmologia, Instituto da Visão (IPEPO), Universidade Federal de São Paulo, São Paulo, SP, Brazil. penhaepm@yahoo.com.br
Marianne Pons
Elaine Fiod Costa
Nilana Meza Tenório Barros
Eduardo B Rodrigues
Emmerson Badaró Cardoso
Eduardo Dib
Mauricio Maia
Maria E Marin-Castaño
Michel Eid Farah

Funding

Shared Equipment ModuleP30EY014801 · NEI · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI Victor L Perez · 2004 to 2026
$12.2M
NEI NIH HHS P30 EY014801NEI NIH HHS P30EY014801
6 · The paper itself

Abstract

purposeTo investigate the in vitro effect of four vital dyes on toxicity and apoptosis in a human retinal pigment epithelial (RPE) cell line.

methodsARPE-19 cells were exposed to brilliant blue (BriB), methyl blue (MetB), acid violet (AcV) and indocyanine green (ICG). Balanced salt solution was used as control. Five different concentrations of each dye (1, 0.5, 0.25, 0.05 and 0.005 mg/mL) and two exposure times (3 and 30 min) were tested. Cell viability was determined by cell count and MTS assay and cell toxicity by LDH assay. Real-time PCR and Western blotting were used to access the apoptosis process.

resultsICG significantly reduced cell viability after 3 minutes of exposure at all concentrations (p<0.01). BriB was safe at concentrations up to 0.25 mg/mL and MetB at concentrations up to 0.5 mg/mL, while AcV was safe up to 0.05 mg/ml, after 3 minutes of exposure. Toxicity was higher, when the cells were treated for 30 minutes. Expression of Bax, cytochrome c and caspase-9 was upregulated at the mRNA and protein level after ICG exposure, while Bcl-2 was downregulated. AcV and MetB were similar to control. However, BriB resulted in upregulation of Bcl-2, an antiapoptotic protein.

conclusionsThe safest dye used on RPE cells was MetB followed by BriB and AcV. ICG was toxic at all concentrations and exposure times tested. Moreover, ICG was the only dye that induced apoptosis in ARPE-19 cells. BriB significantly increased Bcl-2 protein levels, which might protect against the apoptosis process.

Indexed as

Apoptosisbcl-2-Associated X ProteinBenzenesulfonatesCaspase 9Cell LineCell SurvivalColoring AgentsCytochromes cEpithelial CellsGene Expression RegulationHumansIndocyanine GreenMitochondriaProto-Oncogene Proteins c-bcl-2Retinal Pigment EpitheliumSignal Transductionbcl-2-Associated X ProteinBenzenesulfonatesbrilliant blueCaspase 9Coloring AgentsCytochromes cIndocyanine GreenMethyl BlueProto-Oncogene Proteins c-bcl-2

Identifiers

PMID23675521
PMCPMC3651137

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.