Evidence map›Paper›PMID 30763805›Full record

ArticleMolecular immunology2019

Inhibition of the alternative complement pathway accelerates repair processes in the murine model of choroidal neovascularization.

Nathaniel Parsons, Balasubramaniam Annamalai, Elisabeth Obert, Gloriane Schnabolk, Stephen Tomlinson, Bärbel Rohrer

Open access · greenAbstract read
In one paragraph

Article in Molecular immunology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.3field-weighted citation impact, top 9% 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

17 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Review
  15. Review
  16. Article
  17. 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

6 authors at 2 institutions in 1 country.

Nathaniel ParsonsDepartment of Ophthalmology and Microbiology, Medical University of South Carolina, Charleston, SC 29425, United States.
Balasubramaniam AnnamalaiDepartment of Ophthalmology and Microbiology, Medical University of South Carolina, Charleston, SC 29425, United States.
Elisabeth ObertDepartment of Ophthalmology and Microbiology, Medical University of South Carolina, Charleston, SC 29425, United States.
Gloriane SchnabolkDepartment of Ophthalmology and Microbiology, Medical University of South Carolina, Charleston, SC 29425, United States.
Stephen TomlinsonDepartment of Immunology, Medical University of South Carolina, Charleston, SC 29425, United States; Department of Ralph H. Johnson VA Medical Center, Division of Research, Charleston, SC 29401, United States.
Bärbel RohrerDepartment of Ophthalmology and Microbiology, Medical University of South Carolina, Charleston, SC 29425, United States; Department of Ralph H. Johnson VA Medical Center, Division of Research, Charleston, SC 29401, United States. Electronic address: rohrer@musc.edu.
Medical University of South Carolina · USRalph H. Johnson VA Medical Center · US

Funding

Alternative Pathway of Complement Activation in Age-Related Macular DegenerationR01EY019320 · NEI · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI ROHRER, BAERBEL · 2010 to 2014
$2.1M
MUSC FACIL EXPANSION &RENOV: SLE C06RR015455 · NCRR · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI RAYMOND, JOHN R · 2002 to 2002
$2.0M
Antibodies and complement in ischemia reperfusion injury and regenerationR01DK102912 · NIDDK · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI TOMLINSON, STEPHEN · 2015 to 2018
$1.7M
ECT Implants for Factor H Delivery in Models of AMDR01EY024581 · NEI · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI ROHRER, BAERBEL · 2014 to 2016
$1.1M
Determination of physiological mechanisms for electrical wound therapyI01RX000114 · VA · LOUIS STOKES CLEVELAND VA MEDICAL CENTER · PI BOGIE, KATH · 2010 to 2014
–
Complement Factor H Haplotypes and Smoking in Age-Related Macular DegenerationI01RX000444 · VA · RALPH H JOHNSON VA MEDICAL CENTER · PI Baerbel Rohrer · 2011 to 2026
–
Novel Therapies to Improve Functional Recovery After StrokeI01RX001141 · VA · RALPH H JOHNSON VA MEDICAL CENTER · PI TOMLINSON, STEPHEN · 2014 to 2022
–
Targeting complement and chronic inflammation after traumatic brain injuryI21RX002363 · VA · RALPH H JOHNSON VA MEDICAL CENTER · PI TOMLINSON, STEPHEN · 2016 to 2018
–
Role of complement in TBII01BX004256 · VA · RALPH H JOHNSON VA MEDICAL CENTER · PI Stephen Tomlinson · 2019 to 2026
–
RPE Cell Bystander Effects Contribute to AMD PathologyI01BX003050 · VA · RALPH H JOHNSON VA MEDICAL CENTER · PI ROHRER, BAERBEL · 2016 to 2024
–
The Complement System and Spinal Cord InjuryI01BX001218 · VA · RALPH H JOHNSON VA MEDICAL CENTER · PI TOMLINSON, STEPHEN · 2012 to 2015
–
BLRD VA I01 BX001218BLRD VA I01 BX003050BLRD VA I01 BX004256NCRR NIH HHS C06 RR015455NEI NIH HHS R01 EY019320NEI NIH HHS R01 EY024581NIDDK NIH HHS R01 DK102912RRD VA I01 RX000114RRD VA I01 RX000444RRD VA I01 RX001141RRD VA I21 RX002363
6 · The paper itself

Abstract

Age-related macular degeneration (AMD) is the leading cause of blindness in the US. Polymorphisms in complement components are associated with increased AMD risk, and it has been hypothesized that an overactive complement system is partially responsible for AMD pathology. Choroidal neovascularization (CNV) has two phases, injury/angiogenesis and repair/fibrosis. Complement activation has been shown to be involved in the angiogenesis phase of murine CNV, but has not been investigated during repair. Anaphylatoxin (C3a and C5a) signaling in particular has been shown to be involved in both tissue injury and repair in other models. CNV was triggered by laser-induced photocoagulation in C57BL/6 J mice, and lesion sizes measured by optical coherence tomography. Alternative pathway (AP) activation or C3a-receptor (C3aR) and C5a-receptor (C5aR) engagement was inhibited during the repair phase only of CNV with the AP-inhibitor CR2-fH, a C3aR antagonist (N2-[(2,2-diphenylethoxy)acetyl]-l-arginine, TFA), or a C5a blocking antibody (CLS026), respectively. Repair after CNV was also investigated in C3aR/C5aR double knockout mice. CR2-fH treatment normalized anaphylatoxin levels in the eye and accelerated regression of CNV lesions. In contrast, blockade of anaphylatoxin-receptor signaling pharmacologically or genetically did not significantly alter the course of lesion repair. These results suggest that continued complement activation prevents fibrotic scar resolution, and emphasizes the importance of reducing anaphylatoxins to homeostatic levels. This duality of complement, playing a role in injury and repair, will need to be considered when selecting a complement inhibitory strategy for AMD.

Indexed as

AnimalsChoroidal NeovascularizationComplement Pathway, AlternativeComplement System ProteinsDisease Models, AnimalMiceMice, KnockoutReceptor, Anaphylatoxin C5aReceptors, ComplementRegenerationC5ar1 protein, mousecomplement C3a receptorComplement System ProteinsReceptor, Anaphylatoxin C5aReceptors, ComplementAnaphylatoxinChoroidal neovascularizationComplement systemInjuryRepairTargeted alternative pathway inhibitor CR2-fH

Identifiers

PMID30763805
PMCPMC6538295
OpenAlexW2911888004

What OpenQuestion holds

Textmetadata
LicenceTDM
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.