Evidence map›Paper›PMID 34185083›Full record

ArticlePathogens and disease2021

Antibody responses to collagen peptides and streptococcal collagen-like 1 proteins in acute rheumatic fever patients.

Devaki H Pilapitiya, Paul W R Harris, Paulina Hanson-Manful, Reuben McGregor, Renata Kowalczyk, Jeremy M Raynes, Lauren H Carlton, Renwick C J Dobson, Michael G Baker, Margaret Brimble and 2 more

Open access · greenAbstract read
In one paragraph

Article in Pathogens and disease, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.4field-weighted citation impact, top 19% 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

12 citing papers in PubMed, 12 citations in OpenAlex.

  1. Trial
  2. Review
  3. Acute rheumatic fever and rheumatic heart disease.Nature reviews. Disease primers · 2026
    Review
  4. Article
  5. Mechanisms of mitral valve development and disease.Frontiers in cardiovascular medicine · 2026
    Review
  6. Review
  7. Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. 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

12 authors at 2 institutions in 3 countries.

Devaki H PilapitiyaSchool of Medical Sciences, The University of Auckland, Auckland, New Zealand.
Paul W R HarrisSchool of Chemical Sciences, The University of Auckland, Auckland, New Zealand.
Paulina Hanson-ManfulSchool of Medical Sciences, The University of Auckland, Auckland, New Zealand.
Reuben McGregorSchool of Medical Sciences, The University of Auckland, Auckland, New Zealand.
Renata KowalczykSchool of Biological Sciences, The University of Auckland, Auckland, New Zealand.
Jeremy M RaynesSchool of Medical Sciences, The University of Auckland, Auckland, New Zealand.
Lauren H CarltonSchool of Medical Sciences, The University of Auckland, Auckland, New Zealand.
Renwick C J DobsonMaurice Wilkins Centre for Biodiscovery, The University of Auckland, Auckland, New Zealand.
Michael G BakerMaurice Wilkins Centre for Biodiscovery, The University of Auckland, Auckland, New Zealand.
Margaret BrimbleSchool of Chemical Sciences, The University of Auckland, Auckland, New Zealand.
Slawomir LukomskiDepartment of Microbiology, Immunology, and Cell Biology, West Virginia University School of Medicine, Morgantown, WV, USA.
Nicole J MorelandSchool of Medical Sciences, The University of Auckland, Auckland, New Zealand.ORCID 0000-0001-6548-637X
University of Auckland · NZWest Virginia University · US

Funding

Sc1 Proteins of S pyogenes: Biology and FunctionR01AI050666 · NIAID · WEST VIRGINIA UNIVERSITY · PI LUKOMSKI, SLAWOMIR · 2002 to 2005
$1.0M
Scl1-mediated immune evasion of the rheumatologenic group A StreptococcusR21AI083683 · NIAID · WEST VIRGINIA UNIVERSITY · PI LUKOMSKI, SLAWOMIR · 2010 to 2011
$404k
NIAID NIH HHS R01 AI050666NIAID NIH HHS R21 AI083683
6 · The paper itself

Abstract

Acute rheumatic fever (ARF) is a serious post-infectious immune sequelae of Group A streptococcus (GAS). Pathogenesis remains poorly understood, including the events associated with collagen autoantibody generation. GAS express streptococcal collagen-like proteins (Scl) that contain a collagenous domain resembling human collagen. Here, the relationship between antibody reactivity to GAS Scl proteins and human collagen in ARF was investigated. Serum IgG specific for a representative Scl protein (Scl1.1) together with collagen-I and collagen-IV mimetic peptides were quantified in ARF patients (n = 36) and healthy matched controls (n = 36). Reactivity to Scl1.1 was significantly elevated in ARF compared to controls (P < 0.0001) and this was mapped to the collagen-like region of the protein, rather than the N-terminal non-collagenous region. Reactivity to collagen-1 and collagen-IV peptides was also significantly elevated in ARF cases (P < 0.001). However, there was no correlation between Scl1.1 and collagen peptide antibody binding, and hierarchical clustering of ARF cases by IgG reactivity showed two distinct clusters, with Scl1.1 antigens in one and collagen peptides in the other, demonstrating that collagen autoantibodies are not immunologically related to those targeting Scl1.1. Thus, anti-collagen antibodies in ARF appear to be generated as part of the autoreactivity process, independent of any mimicry with GAS collagen-like proteins.

Indexed as

Antibody FormationAdolescentBacterial ProteinsChildChild, PreschoolCollagenFemaleHumansImmunoglobulin GMalePeptidesRecombinant ProteinsRheumatic FeverStreptococcal InfectionsStreptococcus pyogenesBacterial ProteinsCollagenImmunoglobulin GPeptidesRecombinant ProteinsScl1 protein, Streptococcusautoantibodiescollagencollagen-like proteinsgroup A Streptococcusrheumatic fever

Identifiers

PMID34185083
PMCPMC8600009
OpenAlexW3174106618

What OpenQuestion holds

Textmetadata
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.