Evidence map›Paper›PMID 19484444›Full record

ArticleJapanese journal of ophthalmology2009

Subretinal delivery of immunoglobulin G with gold nanoparticles in the rabbit eye.

Atsushi Hayashi, Ayman Naseri, Mark E Pennesi, Eugene de Juan

Abstract read
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In one paragraph

Article in Japanese journal of ophthalmology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing 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

20 citing papers in PubMed, 43 citations in OpenAlex.

  1. [Retinal protective effects of zincZhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences · 2025
    Article
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  9. Nano-Biomaterials for Retinal Regeneration.Nanomaterials (Basel, Switzerland) · 2021
    Review
  10. Article
  11. Review
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  15. Review
  16. Article
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  18. Nanoparticle-based technologies for retinal gene therapy.European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V · 2015
    Review
  19. Molecular histopathology using gold nanorods and optical coherence tomography.Investigative ophthalmology & visual science · 2013
    Article
  20. Nanoparticles in the ocular drug delivery.International journal of ophthalmology · 2013
    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

4 authors at 2 institutions in 2 countries.

Atsushi HayashiDepartment of Ophthalmology, University of California, San Francisco, CA, USA. ganka@med.u-toyama.ac.jp
Ayman Naseri
Mark E Pennesi
Eugene de Juan
University of California, San Francisco · USUniversity of California System · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo examine the feasibility of subretinal delivery of immunoglobulin G (IgG) adsorbed onto gold nanoparticles (GNPs) and its histologic distribution in the rabbit retina after the injection.

methodsGoat IgG was adsorbed onto GNPs electrostatically. Goat IgG-adsorbed GNPs or buffer with goat IgG was injected into the subretinal space of rabbit eyes and followed up for 3 months by examination of fundus photographs, immunohistochemistry against goat IgG, and transmission electron microscopy (TEM). Human retinal pigment epithelial cells (ARPE-19 cells) were cultured, and cell proliferation with or without GNPs was assayed.

resultsAt 1 week after the subretinal injection of goat IgG-adsorbed GNPs, retinal degeneration was observed in the outer retina, and goat IgG was immunolabeled in the retinal pigment epithelium (RPE) and the photoreceptor cells. TEM showed GNPs located in the outer segments and in the lysosomes in the RPE at 1 month and no apparent cytotoxicity of the RPE. There were no inhibitory effects of GNPs on proliferation of ARPE-19 cells.

conclusionsGoat IgG was successfully delivered into photoreceptor cells and RPE using GNPs, though retinal degeneration in the outer retina occurred in this model. This might be an alternative drug delivery method to photoreceptors and RPE.

Indexed as

Drug Delivery SystemsGoldAnimalsCell Culture TechniquesCell ProliferationElectrophoresis, Polyacrylamide GelImmunoconjugatesImmunoenzyme TechniquesImmunoglobulin GMetal NanoparticlesMicroscopy, Electron, TransmissionPhotoreceptor Cells, VertebrateRabbitsRetinaRetinal Pigment EpitheliumGoldImmunoconjugatesImmunoglobulin G

Identifiers

PMID19484444
OpenAlexW2011853886

What OpenQuestion holds

Textmetadata
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.