Evidence map›Paper›PMID 33841865›Full record

ArticleClinical kidney journal2021

Activation of final complement components after kidney transplantation as a marker of delayed graft function severity.

Carlos E Arias-Cabrales, Marta Riera, María José Pérez-Sáez, Javier Gimeno, David Benito, Dolores Redondo, Carla Burballa, Marta Crespo, Julio Pascual, Eva Rodríguez

Open access · goldAbstract read
In one paragraph

Article in Clinical kidney journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
0.6field-weighted citation impact, top 35% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 13 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Article
  5. Immune Landscape in Kidney Transplantation.Journal of inflammation research · 2025
    Review
  6. Article
  7. Review
  8. Complement Inhibition in Kidney Transplantation: Where Are We Now?BioDrugs : clinical immunotherapeutics, biopharmaceuticals and gene therapy · 2023
    Review
  9. Review
  10. 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

10 authors at 1 institution in 1 country.

Carlos E Arias-CabralesDepartment of Nephrology, Hospital del Mar, Barcelona, Catalunya, Spain.
Marta RieraDepartment of Nephrology, Hospital del Mar, Barcelona, Catalunya, Spain.
María José Pérez-SáezDepartment of Nephrology, Hospital del Mar, Barcelona, Catalunya, Spain.
Javier GimenoDepartment of Pathology, Hospital del Mar, Barcelona, Catalunya, Spain.
David BenitoDepartment of Nephrology, Hospital del Mar, Barcelona, Catalunya, Spain.
Dolores RedondoDepartment of Nephrology, Hospital del Mar, Barcelona, Catalunya, Spain.
Carla BurballaDepartment of Nephrology, Hospital del Mar, Barcelona, Catalunya, Spain.
Marta CrespoDepartment of Nephrology, Hospital del Mar, Barcelona, Catalunya, Spain.
Julio PascualDepartment of Nephrology, Hospital del Mar, Barcelona, Catalunya, Spain.
Eva RodríguezDepartment of Nephrology, Hospital del Mar, Barcelona, Catalunya, Spain.
Hospital Del Mar · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIschaemia-reperfusion (I/R) damage is a relevant cause of delayed graft function (DGF). Complement activation is involved in experimental I/R injury, but few data are available from kidney transplant (KT) patients. We studied the dynamics of membrane attack complex (C5b-9) as a soluble fraction (SC5b-9) and the histological deposit pattern of C3b, complement Factor H (FH) and C5b-9 in DGF patients.

methodsWe evaluated SC5b-9 levels in 59 recipients: 38 with immediate graft function and 21 with DGF. The SC5b-9 was measured at admission for KT and 7 days after KT. DGF-kidney biopsies (

resultsSC5b-9 increased significantly in DGF patients (Day 0: 6621 ± 2202 mAU/L versus Day 7: 9626 ± 4142  mAU/L; P = 0.006), while it remained stable in non-DGF patients. Days 0-7 increase >5% was the better cut-off associated with DGF versus non-DGF patient discrimination (sensitivity = 81%). In addition, SC5b-9 increase was related to DGF duration and worse graft function, and independently associated with DGF occurrence. SC5b-9, C3b and FH stains were observed in tubular epithelial cells basal membrane. DGF-kidney biopsies showed a more frequently high-intensity stain, a higher number of tubules with positive stain and larger perimeter of tubules with positive stains for SC5b-9, C3b and FH than control patients.

conclusionsBoth SC5b-9 levels and SC5b-9, C3b and FH deposits in tubular epithelial cells basal membrane are highly expressed in patients experiencing DGF. SC5b-9 levels increase could be useful as a marker of DGF severity.

Indexed as

biomarkers, complementdelayed graft functionkidney biopsykidney transplantation

Identifiers

PMID33841865
PMCPMC8023215
OpenAlexW3092048101

What OpenQuestion holds

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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.