Evidence map›Paper›PMID 32405583›Full record

ArticleKidney international reports2020

Proteomic Analysis of Complement Proteins in Membranous Nephropathy.

Aishwarya Ravindran, Benjamin Madden, M Cristine Charlesworth, Rishi Sharma, Amit Sethi, Hanna Debiec, Daniel Cattran, Fernando C Fervenza, Richard J Smith, Pierre Ronco and 1 more

Open access · goldAbstract read
In one paragraph

Article in Kidney international reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
7.4field-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

40 citing papers in PubMed, 75 citations in OpenAlex.

  1. Proteomic Profiling of Complement Components in Glomerular Disease.Laboratory investigation; a journal of technical methods and pathology · 2026
    Article
  2. Review
  3. Review
  4. Role of local complement activation in kidney fibrosis and repair.The Journal of clinical investigation · 2025
    Review
  5. Review
  6. Article
  7. Article
  8. Review
  9. Article
  10. Review
  11. Review
  12. Segmental Membranous Glomerulopathy in Adults.Kidney diseases (Basel, Switzerland) · 2023
    Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Review
  18. Kidney diseases.Immunological reviews · 2023
    Review
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 4 institutions in 3 countries.

Aishwarya RavindranDepartment of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA.
Benjamin MaddenMedical Genome Facility, Proteomics Core, Mayo Clinic, Rochester, Minnesota, USA.
M Cristine CharlesworthMedical Genome Facility, Proteomics Core, Mayo Clinic, Rochester, Minnesota, USA.
Rishi SharmaCollege of Biological Sciences, University of Minnesota, Minneapolis, Minnesota, USA.
Amit SethiMayo High School, Rochester, Minnesota, USA.
Hanna DebiecSorbonne Université, Université Pierre et Marie Curie, Paris, France.
Daniel CattranDivision of Nephrology, Toronto General Research Institute, Toronto, Ontario, Canada.
Fernando C FervenzaDivision of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA.
Richard J SmithMolecular Otolaryngology and Renal Research Laboratories, Carver College of Medicine, Iowa City, Iowa, USA.
Pierre RoncoSorbonne Université, Université Pierre et Marie Curie, Paris, France.
Sanjeev SethiDepartment of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA.
Mayo Clinic · USInserm · FRToronto General Hospital · CAUniversity of Minnesota · US

Funding

C3 Glomerulopathy -- A Collaborative StudyR01DK110023 · NIDDK · UNIVERSITY OF IOWA · PI Patrick Breheny, Carla M Nester · 2017 to 2026
$5.6M
NIDDK NIH HHS R01 DK110023
6 · The paper itself

Abstract

introductionMembranous nephropathy (MN) is the most common cause of nephrotic syndrome in Caucasian adults. Phospholipase A2 receptor (PLA2R)- and exostosin 1 (EXT1)/exostosin 2 (EXT2)-associated MN represent the most common primary and secondary forms of MN. The complement profile using a proteomics approach has not been studied in these 2 common forms of MN.

methodsWe used laser microdissection and mass spectrometry (MS/MS) to dissect glomeruli and identify glomerular complement proteins in PLA2R-associated (

resultsMS/MS identified high total spectral counts for PLA2R and EXT1/EXT2 in corresponding cases of PLA2R- and EXT1/EXT2-positive MN. Both PLA2R- and EXT1/EXT2-associated MN had high spectral counts of complement proteins C3, C4, C5, C6, C7, C8, and C9. Complement protein C1 was present in low spectral counts in EXT1/EXT2-associated MN. Regulators of complement activation that were detected in MN included higher spectral counts of FH, FHR-1, FHR-5, clusterin, vitronectin and lower spectral counts of FHR-3, FHR-4, and CD59. Low spectral counts of FB and properdin, key components of the alternative pathway, also were detected. IgG4 and IgG1 were the most abundant IgG subclasses in PLA2R- and EXT1/EXT2-associated MN. Lower spectral counts for C3, C4, and C5 were detected in control cases when compared with MN.

conclusionSignificant complement activation is present in MN as evidenced by large spectral counts of complement proteins from C3- and C4-based pathways, including regulatory proteins of complement pathways. These data suggest that anticomplement drugs may be effective in treatment for MN.

Indexed as

complementlaser microdissectionmass spectrometrymembranous nephropathy

Identifiers

PMID32405583
PMCPMC7210748
OpenAlexW3003362489

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.