Evidence map›Paper›PMID 32965482›Full record

ArticleInvestigative ophthalmology & visual science2020

Complement Activation in the Vitreous of Patients With Proliferative Diabetic Retinopathy.

Nikhil Mandava, Vanessa Tirado-Gonzalez, Matthew D Geiger, Jennifer L Patnaik, Ashley Frazer-Abel, Anne M Lynch, Naresh Mandava, Alan G Palestine, V Michael Holers, Brandie D Wagner and 4 more

Open access · goldAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
6.7field-weighted citation impact, top 2% 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

27 citing papers in PubMed, 66 citations in OpenAlex.

  1. Article
  2. Article
  3. Complement in brain and eye disease: shared mechanisms, convergent pathologies, and common therapeutic opportunities.Mammalian genome : official journal of the International Mammalian Genome Society · 2026
    Review
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  14. Observational
  15. Article
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  17. Article
  18. Alternative pathway diagnostics.Immunological reviews · 2023
    Review
  19. Review
  20. The Role of Adaptive Immunity in Diabetic Retinopathy.Journal of clinical medicine · 2022
    Review
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 3 institutions in 2 countries.

Nikhil MandavaDepartment of Ophthalmology, University of Colorado School of Medicine, Aurora, Colorado, United States.
Vanessa Tirado-GonzalezAsociación Para Evitar La Ceguera, Mexico City, Mexico.
Matthew D GeigerDepartment of Ophthalmology, University of Colorado School of Medicine, Aurora, Colorado, United States.
Jennifer L PatnaikDepartment of Ophthalmology, University of Colorado School of Medicine, Aurora, Colorado, United States.
Ashley Frazer-AbelExsersa BioLabs, University of Colorado School of Medicine, Aurora, Colorado, United States.
Anne M LynchDepartment of Ophthalmology, University of Colorado School of Medicine, Aurora, Colorado, United States.
Naresh MandavaDepartment of Ophthalmology, University of Colorado School of Medicine, Aurora, Colorado, United States.
Alan G PalestineDepartment of Ophthalmology, University of Colorado School of Medicine, Aurora, Colorado, United States.
V Michael HolersDepartments of Immunology and Medicine, University of Colorado School of Medicine, Aurora, Colorado, United States.
Brandie D WagnerDepartment of Biostatistics and Informatics, University of Colorado School of Public Health, Aurora, Colorado, United States.
Idaira Sanchez-SantosAsociación Para Evitar La Ceguera, Mexico City, Mexico.
Daniela MeiznerAsociación Para Evitar La Ceguera, Mexico City, Mexico.
Hugo Quiroz-MercadoAsociación Para Evitar La Ceguera, Mexico City, Mexico.
Jesse M SmithDepartment of Ophthalmology, University of Colorado School of Medicine, Aurora, Colorado, United States.
University of Colorado Denver · USAsociacion Para Evitar la Ceguera en México Hospital Dr. Luis Sánchez Bulnes · MXColorado School of Public Health · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: A growing body of evidence points to complement dysregulation in diabetes. Early studies have indicated the presence of complement components inside the eye in patients with diabetic retinopathy, but these data have been confounded by leakage of proteins from the systemic circulation into the vitreous cavity. Methods: We took samples of plasma and vitreous from patients with and without proliferative diabetic retinopathy (PDR) and measured levels of 16 complement components as well as albumin. We employed a normalized ratio using local and systemic complement and albumin levels to control for vascular leakage into the vitreous cavity. Results: Before normalizing, we found significantly higher levels of 16 complement components we measured in PDR eyes compared to controls. After normalizing, levels of C4, factor B, and C5 were decreased compared to controls, while C3a and Ba levels were elevated compared to controls. We also found higher ratios of C3a/C3, C5a/C5, and Ba/factor B in PDR eyes compared to controls. Conclusions: We found evidence of local, intraocular activation of C3, C5, and factor B. The normalized data suggest involvement of the alternative complement pathway. By showing activation of specific complement components in PDR, this study identifies targets for diagnostic and therapeutic potential.

Indexed as

AdultAgedCase-Control StudiesComplement ActivationComplement System ProteinsDiabetic RetinopathyFemaleFollow-Up StudiesHumansMaleMiddle AgedVitrectomyVitreous BodyComplement System Proteins

Identifiers

PMID32965482
PMCPMC7520707
OpenAlexW3087928545

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.