Evidence map›Paper›PMID 31959827›Full record

ArticleScientific reports2020

Analysis of O-glycoforms of the IgA1 hinge region by sequential deglycosylation.

Yukako Ohyama, Hisateru Yamaguchi, Kazuki Nakajima, Tomohiro Mizuno, Yukihiro Fukamachi, Yasuto Yokoi, Naotake Tsuboi, Daijo Inaguma, Midori Hasegawa, Matthew B Renfrow and 3 more

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

28 citing papers in PubMed, 32 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Glycan Structures of Human Immunoglobulins and Their Roles.Advances in experimental medicine and biology · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. The Role of Glycans in Human Immunity-A Sweet Code.Molecules (Basel, Switzerland) · 2025
    Review
  9. Article
  10. Article
  11. AsymmetricJournal of the American Chemical Society · 2024
    Article
  12. Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Review
  18. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors at 4 institutions in 2 countries.

Yukako OhyamaDepartment of Nephrology, Fujita Health University School of Medicine, Toyoake, Japan.
Hisateru YamaguchiInstitute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan.
Kazuki NakajimaCenter for Research Promotion and Support, Fujita Health University, Toyoake, Japan.
Tomohiro MizunoAnalytical Pharmacology, Faculty of Pharmacy, Meijo University, Nagoya, Japan.
Yukihiro FukamachiMitsui Knowledge Industry, Tokyo, Japan.
Yasuto YokoiMitsui Knowledge Industry, Tokyo, Japan.
Naotake TsuboiDepartment of Nephrology, Fujita Health University School of Medicine, Toyoake, Japan.
Daijo InagumaDepartment of Nephrology, Fujita Health University School of Medicine, Toyoake, Japan.ORCID http://orcid.org/0000-0002-3977-5933
Midori HasegawaDepartment of Nephrology, Fujita Health University School of Medicine, Toyoake, Japan.
Matthew B RenfrowDepartments of Biochemistry and Molecular Genetics and Microbiology, University of Alabama at Birmingham, Birmingham, AL, USA.ORCID http://orcid.org/0000-0002-4193-7305
Jan NovakDepartments of Biochemistry and Molecular Genetics and Microbiology, University of Alabama at Birmingham, Birmingham, AL, USA.ORCID http://orcid.org/0000-0002-9211-6670
Yukio YuzawaDepartment of Nephrology, Fujita Health University School of Medicine, Toyoake, Japan.
Kazuo TakahashiDepartment of Nephrology, Fujita Health University School of Medicine, Toyoake, Japan. kazuot@fujita-hu.ac.jp.
Fujita Health University · JPMitsui (Japan) · JPUniversity of Alabama at Birmingham · USMeijo University · JP

Funding

Elucidating IgA Nephropathy through Genetic Studies of IgA1 GlycosylationR01DK082753 · NIDDK · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI GHARAVI, ALI G, NOVAK, JAN · 2009 to 2024
$8.7M
Molecular Basis of Pathogenicity of IgA1-containing Immune ComplexesR01DK078244 · NIDDK · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI JAN NOVAK · 2007 to 2026
$6.0M
Analytical tools for the analysis of clustered O-glycans in clinical samplesR01GM098539 · NIGMS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI RENFROW, MATTHEW B · 2011 to 2019
$2.7M
Molecular Basis of Pathogenicity of IgA1-containing Immune ComplexesR56DK078244 · NIDDK · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI NOVAK, JAN · 2012 to 2012
$92k
NIDDK NIH HHS R01 DK078244NIDDK NIH HHS R01 DK082753NIDDK NIH HHS R56 DK078244NIGMS NIH HHS R01 GM098539
6 · The paper itself

Abstract

A common renal disease, immunoglobulin A (IgA) nephropathy (IgAN), is associated with glomerular deposition of IgA1-containing immune complexes. IgA1 hinge region (HR) has up to six clustered O-glycans consisting of Ser/Thr-linked N-acetylgalactosamine with β1,3-linked galactose and variable sialylation. IgA1 glycoforms with some galactose-deficient (Gd) HR O-glycans play a key role in IgAN pathogenesis. The clustered and variable O-glycans make the IgA1 glycomic analysis challenging and better approaches are needed. Here, we report a comprehensive analytical workflow for IgA1 HR O-glycoform analysis. We combined an automated quantitative analysis of the HR O-glycopeptide profiles with sequential deglycosylation to remove all but Gd O-glycans from the HR. The workflow was tested using serum IgA1 from healthy subjects. Twelve variants of glycopeptides corresponding to the HR with three to six O-glycans were detected; nine glycopeptides carried up to three Gd O-glycans. Sites with Gd O-glycans were unambiguously identified by electron-transfer/higher-energy collision dissociation tandem mass spectrometry. Extracted ion chromatograms of isomeric glycoforms enabled quantitative assignment of Gd sites. The most frequent Gd site was T

Indexed as

Glomerulonephritis, IGAGlycomicsGlycopeptidesGlycosylationHigh-Throughput Screening AssaysHumansImmunoglobulin APolysaccharidesProtein IsoformsTandem Mass SpectrometryGlycopeptidesImmunoglobulin APolysaccharidesProtein Isoforms

Identifiers

PMID31959827
PMCPMC6971281
OpenAlexW3000451715

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.