Evidence map›Paper›PMID 28533197›Full record

ArticleTurkish journal of haematology : official journal of Turkish Society of Haematology2018

Incomplete Antibodies May Reduce ABO Cross-Match Incompatibility: A Pilot Study.

Mehmet Özen, Soner Yılmaz, Tülin Özkan, Yeşim Özer, Aliye Aysel Pekel, Asuman Sunguroğlu, Günhan Gürman, Önder Arslan

Open access · diamondAbstract read
In one paragraph

Article in Turkish journal of haematology : official journal of Turkish Society of Haematology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact, top 93% 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

2 citing papers in PubMed, 4 citations in OpenAlex.

  1. Article
  2. 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

8 authors at 3 institutions in 1 country.

Mehmet ÖzenUfuk University Faculty of Medicine, Department of Hematology, Ankara, Turkey.
Soner YılmazUniversity of Health Sciences, Gülhane Training and Research Hospital, Blood Bank Unit, Ankara, Turkey.
Tülin ÖzkanAnkara University Faculty of Medicine, Department of Medical Biology, Ankara, Turkey.
Yeşim ÖzerAnkara University Faculty of Medicine, Unit of Blood Bank, Ankara, Turkey.
Aliye Aysel PekelUniversity of Health Sciences, Gülhane Training and Research Hospital, Clinic of Immunology and Allergy Diseases, Ankara, Turkey.
Asuman SunguroğluAnkara University Faculty of Medicine, Department of Medical Biology, Ankara, Turkey.
Günhan GürmanAnkara University Faculty of Medicine, Department of Hematology, Ankara, Turkey.
Önder ArslanAnkara University Faculty of Medicine, Department of Hematology, Ankara, Turkey.
Ankara University · TRMinistry of Health · TRUfuk University · TR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveAny erythrocyte transfusion among humans having type A or B blood groups is impossible due to antibodies causing fatal transfusion complications. A cross-match test is performed to prevent immune transfusion complications before transfusion. Our hypothesis is that the fragment antibody (Fab) part of the antibody (incomplete antibody) may be used to prevent an immune stimulus related to the complete antibody. Therefore, we designed a pilot study to evaluate the effectiveness of these incomplete antibodies using cross-match tests. MATERIALS AND

methodsPepsin enzyme and staphylococcal protein A columns were used to cut anti-A and anti-B monoclonal antibodies and purify their Fab (2) fragments, respectively. An Rh-positive erythrocyte suspension with purified anti-A Fab (2) solution and B Rh-positive erythrocyte suspension with purified anti-B Fab (2) solution were combined correspondingly. Cross-match tests were performed by tube and gel centrifugation methods. The agglutination levels due to the anti-A and anti-B Fab (2) antibodies and their effects on the agglutination normally observed with complete antibodies were then measured.

resultsNo agglutination for the purified incomplete anti-A Fab (2) with A Rh+ erythrocyte and anti-B Fab (2) with B Rh+ erythrocyte combinations was observed in the tube cross-match tests. These agglutination levels were 1+ in two wells in the gel centrifugation cross-match tests. Fab (2)-treated erythrocytes were also resistant to the agglutination that normally occurs with complete antibodies.

conclusionWe determined that the Fab (2) fragments of antibodies may not only be used to obtain a mild or negative reaction when compared to complete antibodies, but they might also be used for decreasing ABO incompatibility. Incomplete antibodies might be a therapeutic option in autoimmune hemolytic anemia and they may also be used in solid organ or hematopoietic stem cell transplantation. Therefore, we have planned an in vivo study to prove these in vitro findings.

Indexed as

ABO Blood-Group SystemAntibodiesBlood Group IncompatibilityBlood Grouping and CrossmatchingAgglutination TestsBlood TransfusionErythrocytesFlow CytometryHumansImmunoglobulin FragmentsPilot ProjectsTransfusion ReactionABO Blood-Group SystemAntibodiesImmunoglobulin FragmentsComplications Humoral immune response.Red blood cellsTransfusion medicine

Identifiers

PMID28533197
PMCPMC5843775
OpenAlexW2619298780

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.