Evidence map›Paper›PMID 31932958›Full record

ArticlePediatric nephrology (Berlin, Germany)2020

Clinical relevance of membrane attack complex deposition in children with IgA nephropathy and Henoch-Schönlein purpura.

Camille Dumont, Aicha Mérouani, Thierry Ducruet, Geneviève Benoit, Marie-Josée Clermont, Anne Laure Lapeyraque, Véronique Phan, Natalie Patey

Abstract read
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In one paragraph

Article in Pediatric nephrology (Berlin, Germany), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 11% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

  1. Pooled it
  2. New prognostic markers for IgA nephropathy in children.Pediatric nephrology (Berlin, Germany) · 2026
    Review
  3. Article
  4. Article
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  7. Complement System Inhibitors in Nephrology: An Update-Narrative Review.International journal of molecular sciences · 2025
    Review
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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

8 authors at 1 institution in 1 country.

Camille DumontDepartment of Pathology, CHU Sainte Justine, 3175 Chemin Côte Sainte Catherine, Montréal, Québec, H3T 1C5, Canada.
Aicha MérouaniDepartment of Nephrology, CHU Sainte-Justine, Université de Montréal, Montréal, Québec, Canada.
Thierry DucruetApplied Clinical Research Unit, CHU Sainte-Justine, Université de Montréal, Montréal, Québec, Canada.
Geneviève BenoitDepartment of Nephrology, CHU Sainte-Justine, Université de Montréal, Montréal, Québec, Canada.
Marie-Josée ClermontDepartment of Nephrology, CHU Sainte-Justine, Université de Montréal, Montréal, Québec, Canada.
Anne Laure LapeyraqueDepartment of Nephrology, CHU Sainte-Justine, Université de Montréal, Montréal, Québec, Canada.
Véronique PhanDepartment of Nephrology, CHU Sainte-Justine, Université de Montréal, Montréal, Québec, Canada.
Natalie PateyDepartment of Pathology, CHU Sainte Justine, 3175 Chemin Côte Sainte Catherine, Montréal, Québec, H3T 1C5, Canada. natpatey@gmail.com.ORCID 0000-0001-6856-0344
Centre Hospitalier Universitaire Sainte-Justine · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIgA nephropathy (IgAN) and Henoch-Schönlein purpura are common glomerular disorders in children sharing the same histopathologic pattern of IgA deposits within the mesangium, even if their physiopathology may be different. Repeated exposure to pathogens induces the production of abnormal IgA1. The immune complex deposition in the renal mesangium in IgAN or potentially in small vessels in Henoch-Schönlein purpura induces complement activation via the alternative and lectin pathways. Recent studies suggest that levels of membrane attack complex (MAC) in the urine might be a useful indicator of renal injury. Because of the emerging availability of therapies that selectively block complement activation, the aim of the present study is to investigate whether MAC immunostaining might be a useful marker of IgA-mediated renal injury.

methodsWe conducted immunohistochemistry analysis of the MAC on renal biopsies from 67 pediatric patients with IgAN and Henoch-Schönlein purpura. We classified their renal biopsies according to the Oxford classification, retrieved symptoms, biological parameters, treatment, and follow-up.

resultsWe found MAC expression was significantly related to impaired renal function and patients whose clinical course required therapy. MAC deposits tend to be more abundant in patients with decreased glomerular filtration rate (p = 0.02), patients with proteinuria > 0.750 g/day/1.73 m

conclusionsWe conclude that MAC deposition could be a useful additional indicator of renal injury in patients with IgAN and Henoch-Schönlein purpura, independent of other indicators.

Indexed as

AdolescentBiomarkersBiopsyChildChild, PreschoolComplement Membrane Attack ComplexComplement Pathway, AlternativeComplement Pathway, Mannose-Binding LectinFeasibility StudiesFemaleFollow-Up StudiesGlomerular MesangiumGlomerulonephritis, IGAHumansIgA VasculitisImmunoglobulin ABiomarkersComplement Membrane Attack ComplexImmunoglobulin AImmunosuppressive AgentsHenoch-Schönlein purpuraIgA nephropathyMembrane attack complexPediatric

Identifiers

PMID31932958
OpenAlexW2999964156

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.