Evidence map›Paper›PMID 33875685›Full record

Observational studyScientific reports2021

Changes in complement activation products after anti-VEGF injection for choroidal neovascularization in age-related macular degeneration and pachychoroid disease.

Keiichiro Tanaka, Yasuharu Oguchi, Tomoko Omori, Yumi Ishida, Hiroaki Shintake, Ryutaro Tomita, Akihito Kasai, Masashi Ogasawara, Yukinori Sugano, Kanako Itagaki and 4 more

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in Scientific reports, 2021. 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
2.1field-weighted citation impact, top 15% 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

13 citing papers in PubMed, 16 citations in OpenAlex.

  1. Trial
  2. Review
  3. Article
  4. Enhanced retinal pigment epithelial cells as a delivery vehicle for retinal disease.Molecular therapy. Methods & clinical development · 2025
    Article
  5. Article
  6. Article
  7. Three-year outcome of photodynamic therapy combined with VEGF inhibitor for pachychoroid neovasculopathy.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2024
    Observational
  8. Article
  9. Article
  10. Article
  11. Review
  12. 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

14 authors at 1 institution in 1 country.

Keiichiro TanakaDepartment of Ophthalmology, Fukushima Medical University, Fukushima, 960-1295, Japan.
Yasuharu OguchiDepartment of Ophthalmology, Fukushima Medical University, Fukushima, 960-1295, Japan.
Tomoko OmoriDepartment of Immunology, Fukushima Medical University, Fukushima, 960-1295, Japan.
Yumi IshidaDepartment of Immunology, Fukushima Medical University, Fukushima, 960-1295, Japan.
Hiroaki ShintakeDepartment of Ophthalmology, Fukushima Medical University, Fukushima, 960-1295, Japan.
Ryutaro TomitaDepartment of Ophthalmology, Fukushima Medical University, Fukushima, 960-1295, Japan.
Akihito KasaiDepartment of Ophthalmology, Fukushima Medical University, Fukushima, 960-1295, Japan.
Masashi OgasawaraDepartment of Ophthalmology, Fukushima Medical University, Fukushima, 960-1295, Japan.
Yukinori SuganoDepartment of Ophthalmology, Fukushima Medical University, Fukushima, 960-1295, Japan.
Kanako ItagakiDepartment of Ophthalmology, Fukushima Medical University, Fukushima, 960-1295, Japan.
Akira OjimaDepartment of Ophthalmology, Fukushima Medical University, Fukushima, 960-1295, Japan.
Takeshi MachidaDepartment of Immunology, Fukushima Medical University, Fukushima, 960-1295, Japan.
Hideharu SekineDepartment of Immunology, Fukushima Medical University, Fukushima, 960-1295, Japan.
Tetsuju SekiryuDepartment of Ophthalmology, Fukushima Medical University, Fukushima, 960-1295, Japan. sekiryu@fmu.ac.jp.
Fukushima Medical University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We evaluated changes in the complement system resulting from anti-vascular endothelial growth factor (VEGF) in eyes with age-related choroidal neovascularization (CNV) including neovascular age-related macular degeneration, pachychoroid neovasculopathy, and polypoidal choroidal neovasculopathy. We measured the concentrations of the complement activation products (C3a, C4a), VEGF, and monocyte chemotactic protein-1 in the aqueous humor during intravitreal anti-VEGF injections for CNV. The VEGF level decreased significantly (P < 0.001), while the C3a and C4a levels increased significantly (P < 0.001 for both comparisons) 1 month after two monthly anti-VEGF injections. The VEGF level was correlated with the C3a (R = 0.328, P = 0.007) and C4a (R = - 0.237, P = 0.055) levels at baseline, but the correlation between the VEGF and C3a levels (R = - 0.148, P = 0.242) changed significantly (P = 0.028 by analysis of covariance) after anti-VEGF treatment. The C3a increase after anti-VEGF therapy did not change the visual outcomes in eyes with CNV for 1 year. Dysregulation of the complement system can be induced after anti-VEGF therapy.

Indexed as

Complement ActivationAgedAngiogenesis InhibitorsChoroidChoroidal NeovascularizationChoroid DiseasesFemaleHumansMacular DegenerationMaleMiddle AgedProspective StudiesVascular Endothelial Growth Factor AAngiogenesis InhibitorsVascular Endothelial Growth Factor AVEGFA protein, human

Identifiers

PMID33875685
PMCPMC8055893
OpenAlexW3110338271

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.