Evidence map›Paper›PMID 34847865›Full record

ArticleBMC ophthalmology2021

Selective retina therapy and thermal stimulation of the retina: different regenerative properties - implications for AMD therapy.

Elisabeth Richert, Julia Papenkort, Claus von der Burchard, Alexa Klettner, Philipp Arnold, Ralph Lucius, Ralf Brinkmann, Carsten Framme, Johann Roider, Jan Tode

Open access · goldAbstract read
In one paragraph

Article in BMC ophthalmology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.4field-weighted citation impact, top 42% 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

4 citing papers in PubMed, 12 citations in OpenAlex.

  1. Article
  2. Article
  3. Detection sensitivity of fluorescence lifetime imaging ophthalmoscopy for laser-induced selective damage of retinal pigment epithelium.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2024
    Article
  4. 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 at 4 institutions in 1 country.

Elisabeth RichertDepartment of Ophthalmology, Christian-Albrechts-University of Kiel, University Medical Center, Kiel, Germany.
Julia PapenkortDepartment of Ophthalmology, Christian-Albrechts-University of Kiel, University Medical Center, Kiel, Germany.
Claus von der BurchardDepartment of Ophthalmology, Christian-Albrechts-University of Kiel, University Medical Center, Kiel, Germany.
Alexa KlettnerDepartment of Ophthalmology, Christian-Albrechts-University of Kiel, University Medical Center, Kiel, Germany.
Philipp ArnoldFriedrich-Alexander-University Erlangen-Nürnberg, Nürnberg, Germany.
Ralph LuciusChristian-Albrechts-University of Kiel, Institute of Anatomy, Kiel, Germany.
Ralf BrinkmannMedical Laser Center Lübeck, Lübeck, Germany.
Carsten FrammeDepartment of Ophthalmology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
Johann RoiderDepartment of Ophthalmology, Christian-Albrechts-University of Kiel, University Medical Center, Kiel, Germany.
Jan TodeDepartment of Ophthalmology, Christian-Albrechts-University of Kiel, University Medical Center, Kiel, Germany. tode.jan@mh-hannover.de.
Kiel University · DEMedizinische Hochschule Hannover · DEFriedrich-Alexander-Universität Erlangen-Nürnberg · DEMedizinisches Laserzentrum Lübeck (Germany) · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSelective Retina Therapy (SRT), a photodisruptive micropulsed laser modality that selectively destroys RPE cells followed by regeneration, and Thermal Stimulation of the Retina (TSR), a stimulative photothermal continuous wave laser modality that leads to an instant sublethal temperature increase in RPE cells, have shown therapeutic effects on Age-related Macular Degeneration (AMD) in mice. We investigate the differences between both laser modalities concerning RPE regeneration.

methodsFor PCR array, 6 eyes of murine AMD models, apolipoprotein E and nuclear factor erythroid-derived 2- like 2 knock out mice respectively, were treated by neuroretina-sparing TSR or SRT. Untreated litter mates were controls. Eyes were enucleated either 1 or 7 days after laser treatment. For morphological analysis, porcine RPE/choroid organ cultures underwent the same laser treatment and were examined by calcein vitality staining 1 h and 1, 3 or 5 days after irradiation.

resultsTSR did not induce the expression of cell-mediators connected to cell death. SRT induced necrosis associated cytokines as well as inflammation 1 but not 7 days after treatment. Morphologically, 1 h after TSR, there was no cell damage. One and 3 days after TSR, dense chromatin and cell destruction of single cells was seen. Five days after TSR, there were signs of migration and proliferation. In contrast, 1 h after SRT a defined necrotic area within the laser spot was seen. This lesion was closed over days by migration and proliferation of adjacent cells.

conclusionsSRT induces RPE cell death, followed by regeneration within a few days. It is accompanied by necrosis induced inflammation, RPE proliferation and migration. TSR does not induce immediate RPE cell death; however, migration and mitosis can be seen a few days after laser irradiation, not accompanied by necrosis-associated inflammation. Both might be a therapeutic option for the treatment of AMD.

Indexed as

Lasers, Solid-StateMacular DegenerationAnimalsChoroidMiceRetinaRetinal Pigment EpitheliumSwineAge- related macular degeneration (AMD)RegenerationRejuvenationSelective retina therapy (SRT)Thermal stimulation of the retina (TSR)

Identifiers

PMID34847865
PMCPMC8630886
OpenAlexW3117036980

What Socratic 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 Socratic graph.