Evidence map›Paper›PMID 30418423›Full record

ArticleTransplantation2019

An Easy and Sensitive Method to Profile the Antibody Specificities of HLA-specific Memory B Cells.

Gonca E Karahan, Juliette Krop, Caroline Wehmeier, Yvonne J H de Vaal, Janneke Langerak-Langerak, Dave L Roelen, Neubury M Lardy, Frederike J Bemelman, Ineke J M Ten Berge, Marlies E J Reinders and 3 more

Open access · hybridAbstract read
In one paragraph

Article in Transplantation, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.3field-weighted citation impact, top 5% 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

20 citing papers in PubMed, 43 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Steroid Sparing Maintenance Immunosuppression in Highly Sensitised Patients Receiving Alemtuzumab Induction.Transplant international : official journal of the European Society for Organ Transplantation · 2023
    Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Memory B Cells in Pregnancy Sensitization.Frontiers in immunology · 2021
    Review
  16. Generation and reactivity analysis of human recombinant monoclonal antibodies directed against epitopes on HLA-DR.American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2020
    Article
  17. Article
  18. Review
  19. Review
  20. Outstanding questions in transplantation: B cells, alloantibodies, and humoral rejection.American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2019
    Review
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

13 authors at 3 institutions in 1 country.

Gonca E KarahanDepartment of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands.
Juliette KropDepartment of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands.
Caroline WehmeierDepartment of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands.
Yvonne J H de VaalDepartment of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands.
Janneke Langerak-LangerakDepartment of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands.
Dave L RoelenDepartment of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands.
Neubury M LardyDepartment of Immunogenetics, Sanquin Diagnostic Services, Amsterdam, The Netherlands.
Frederike J BemelmanRenal Transplant Unit, Department of Nephrology, Academic Medical Center, Amsterdam, The Netherlands.
Ineke J M Ten BergeRenal Transplant Unit, Department of Nephrology, Academic Medical Center, Amsterdam, The Netherlands.
Marlies E J ReindersDepartment of Internal Medicine (Nephrology), Leiden University Medical Center, Leiden, The Netherlands.
Cees van KootenDepartment of Internal Medicine (Nephrology), Leiden University Medical Center, Leiden, The Netherlands.
Frans H J ClaasDepartment of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands.
Sebastiaan HeidtDepartment of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands.
Leiden University Medical Center · NLAcademic Medical Center · NLSanquin · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPretransplant immunological risk assessment is currently based on donor-specific HLA antibodies in serum. Despite being an excellent source for antibodies produced by bone marrow-residing plasma cells, serum analysis does not provide information on the memory B-cell compartment. Although B-cell culture supernatants can be used to detect memory B cell-derived HLA antibodies, low IgG concentrations can preclude detectability of HLA antibodies in luminex single-antigen bead (SAB) assays.

methodsCulture supernatants of polyclonally activated B cells from alloantigen exposed (n = 13) or nonexposed (n = 10) individuals were either concentrated 10-fold, or IgG was isolated by using a protein G affinity purification method to increase the IgG concentration. These processed culture supernatants, as well as paired serum samples were tested for the presence of HLA antibodies using luminex SAB analysis.

resultsIn immunized individuals, 64% were found to have HLA-specific B-cell memory in concentrated supernatants, whereas 82% showed HLA-specific B-cell memory when IgG isolated supernatants were used for HLA antibody detection. IgG-isolated supernatants showed higher mean fluorescence intensity values compared with concentrated supernatants without increased background. In some individuals, HLA-specific B-cell memory was detected in the absence of accompanying serum antibody specificities.

conclusionsWe developed a novel, highly sensitive method to assess the HLA-specific memory B-cell compartment using luminex SAB technology. This assay allows direct comparison to the serum compartment and may therefore provide a more complete picture of the humoral alloimmune response in patients with a history of alloantigen exposure.

Indexed as

Antibody SpecificityImmunologic MemoryB-LymphocytesHistocompatibility TestingHLA AntigensHumansImmunoglobulin GIsoantibodiesLymphocyte ActivationHLA AntigensImmunoglobulin GIsoantibodies

Identifiers

PMID30418423
PMCPMC6430593
OpenAlexW2901669713

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.