Evidence map›Paper›PMID 22969267›Full record

ArticleMolecular vision2012

Plasma levels of complement proteins from the alternative pathway in patients with age-related macular degeneration are independent of Complement Factor H Tyr⁴⁰²His polymorphism.

Aldacilene Souza Silva, Anderson Gustavo Teixeira, Lorena Bavia, Fabio Lin, Roberta Velletri, Rubens Belfort, Lourdes Isaac

Open access · greenAbstract read
In one paragraph

Article in Molecular vision, 2012. 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
1.0field-weighted citation impact, top 25% 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, 45 citations in OpenAlex.

  1. Article
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  3. Review
  4. Review
  5. Observational
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Increased Alternative Complement Pathway Function and Improved Survival during Critical Illness.American journal of respiratory and critical care medicine · 2020
    Article
  12. Complement Activation Levels Are Related to Disease Stage in AMD.Investigative ophthalmology & visual science · 2020
    Article
  13. Article
  14. Small-molecule factor B inhibitor for the treatment of complement-mediated diseases.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  15. Article
  16. Article
  17. Review
  18. Review
  19. Article
  20. The eye as a complement dysregulation hotspot.Seminars in immunopathology · 2018
    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

7 authors at 1 institution in 1 country.

Aldacilene Souza SilvaDepartment of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
Anderson Gustavo Teixeira
Lorena Bavia
Fabio Lin
Roberta Velletri
Rubens Belfort
Lourdes Isaac
Universidade de São Paulo · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo investigate the influence of the Factor H (CFH) Tyr⁴⁰²His polymorphism on the plasma levels of the alternative pathway proteins CFH, C3, Factor B (FB), Factor D (FD), and Factor I (FI) and the inflammatory marker C-reactive protein (CRP) in 119 patients with age-related macular degeneration (AMD) and 152 unrelated control individuals.

methodsPatients with AMD and the control group were separated according to CFH polymorphism, age, and gender. Plasma complement proteins and CRP concentrations were determined with enzyme-linked immunosorbent assay, immunodiffusion, or nephelometry.

resultsSignificant differences in the concentrations of FD and FI were observed between the patients with AMD and the control individuals. We observed significantly reduced FD plasma levels in patients with AMD. We also identified a significant decrease in CFH plasma levels in female patients with AMD in relation to female controls. Plasma FI levels were significantly increased in patients with AMD compared to the control group. Regarding gender, a significant increase in FI plasma levels was observed in male patients. Finally, we found no significant correlation between the CFH Tyr(402)His polymorphism and the CFH, C3, FB, FD, FI, and CRP plasma levels.

conclusionsPatients with AMD present altered levels of FD and FI in a manner independent of this CFH polymorphism, and gender apparently contributes to the plasma levels of these two proteins in patients with AMD and control individuals.

Indexed as

AgedAged, 80 and overCase-Control StudiesComplement C3Complement Factor BComplement Factor DComplement Factor HComplement Factor IComplement Pathway, AlternativeC-Reactive ProteinEnzyme-Linked Immunosorbent AssayFemaleGenotypeHumansMacular DegenerationMaleComplement C3Complement Factor BComplement Factor DComplement Factor HComplement Factor IC-Reactive Protein

Identifiers

PMID22969267
PMCPMC3436886
OpenAlexW2103941977

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.