Evidence map›Paper›PMID 26178656›Full record

ArticleMalaria journal2015

Immunoglobulin response to Plasmodium falciparum RESA proteins in uncomplicated and severe malaria.

Cyril Badaut, Léa Guyonnet, Jacqueline Milet, Emmanuelle Renard, Rémy Durand, Firmine Viwami, Gratien Sagbo, Francis Layla, Philippe Deloron, Serge Bonnefoy and 1 more

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
0.3field-weighted citation impact, top 32% 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

5 citing papers in PubMed, 1 synthesis or guideline pooled it, 5 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Sickle Cell Trait Modulates the Proteome and Phosphoproteome ofFrontiers in cellular and infection microbiology · 2021
    Article
  4. Review
  5. 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

11 authors at 5 institutions in 3 countries.

Cyril BadautEquipe résidente de recherche en infectiologie tropicale, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny sur Orge, France. cbadaut@gmail.com.
Léa GuyonnetInstitut de Recherche pour le Développement, UMR 216 Mère et enfant face aux infections tropicales, Paris, France. lea.guyonnet@voila.fr.
Jacqueline MiletInstitut de Recherche pour le Développement, UMR 216 Mère et enfant face aux infections tropicales, Paris, France. jacqueline.milet@ird.fr.
Emmanuelle RenardInstitut de Recherche pour le Développement, UMR 216 Mère et enfant face aux infections tropicales, Paris, France. Emmanuelle.Renard@ac-creteil.fr.
Rémy DurandInstitut de Recherche pour le Développement, UMR 216 Mère et enfant face aux infections tropicales, Paris, France. remy.durand@avc.aphp.fr.
Firmine ViwamiCentre d'Étude et de Recherche sur le Paludisme Associé à la Grossesse et l'Enfance (CERPAGE), Cotonou, Benin. vfeafr@yahoo.fr.
Gratien SagboService de Pédiatrie, Centre National Hospitalier et Universitaire Hubert K. Maga, Cotonou, Benin. godsagbo@yahoo.fr.
Francis LaylaService de Pédiatrie, Centre National Hospitalier et Universitaire Hubert K. Maga, Cotonou, Benin. lalyahf@hotmail.com.
Philippe DeloronInstitut de Recherche pour le Développement, UMR 216 Mère et enfant face aux infections tropicales, Paris, France. philippe.deloron@ird.fr.
Serge BonnefoyUnité de Biologie Cellulaire des Trypanosomes, Institut Pasteur, INSERM U1201, Paris, France. serge.bonnefoy@pasteur.fr.
Florence Migot-NabiasInstitut de Recherche pour le Développement, UMR 216 Mère et enfant face aux infections tropicales, Paris, France. florence.migot-nabias@ird.fr.
Délégation Paris 5 · FRCentre National Hospitalier et Universitaire Hubert Koutoukou MAGA · BJCentre National de Recherche et de Formation sur le Paludisme · BFInserm · FRInstitut de Médecine Tropicale du Service de Santé des Armées · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe three members of the ring-infected erythrocyte surface antigen (RESA) proteins family share high sequence homologies, which impair the detection and assignment to one or another protein of some pathogenic processes inherent to Plasmodium falciparum malaria. The present study was intended to determine if the antibody and inflammatory responses of children living in a malaria-endemic area varied depending on the RESA-1, RESA-2 or RESA-3 proteins and the severity of the disease, two groups of severe and uncomplicated malaria cases being considered.

methodsTwo synthetic peptides representing predicted B cell epitopes were designed per RESA protein, all located outside of the 3' and 5' repetition blocks, in order to allow an antibody detection specific of each member of the family. Recombinant rRESA-1B and rRESA-3B proteins were also engineered. Two groups of Beninese children admitted to hospital in 2009 for either uncomplicated or severe malaria were compared for their plasma levels of IgG specifically recognizing each recombinant RESA protein or synthetic peptide, and for their plasma inflammatory cytokine levels (IFN-γ, TNF-α and IL-10), taking into account host and parasite genetic factors.

resultsThe absence of IgG cross-reactivity between rRESA proteins and their protein carrier as well as between each RESA peptide and a non-epitopic RESA control peptide validated the use of the engineered recombinant proteins and peptides for the measurement of plasma IgG. Taking into account age, fever duration and parasitaemia, a multiple logistic regression performed on children clustered according to their antibody responses' profiles concluded to an increased risk of severe malaria for P2 (representative of RESA-1) responders (P = 0.007). Increased IL-10 plasma levels were found in children harbouring multiclonal P. falciparum infections on the basis of the T1526G resa2 gene polymorphism (P = 0.004).

conclusionsThis study provided novel tools to dissect the seroreactivity against the three members of the RESA protein family and to describe its relation to protection against malaria. It suggested the measurement of plasma antibodies raised against specific peptides to serve as predictive immunologic markers for disease severity. Lastly, it reinforced previous observations linking the T1526G resa2 gene mutation to severe malaria.

Indexed as

Antibodies, ProtozoanBeninChildChild, PreschoolCross-Sectional StudiesCytokinesFemaleHumansImmunoglobulin GInfantMalaria, FalciparumMalePlasmodium falciparumProtozoan ProteinsRecombinant ProteinsAntibodies, ProtozoanCytokinesImmunoglobulin GProtozoan ProteinsRecombinant Proteinsring-infected erythrocyte surface antigen (RESA), Plasmodium falciparum

Identifiers

PMID26178656
PMCPMC4502540
OpenAlexW1516114577

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.