Evidence map›Paper›PMID 22050867›Full record

ArticleMalaria journal2011

Vivax malaria in Mauritania includes infection of a Duffy-negative individual.

Nathalie Wurtz, Khadijetou Mint Lekweiry, Hervé Bogreau, Bruno Pradines, Christophe Rogier, Ali Ould Mohamed Salem Boukhary, Jamal Eddine Hafid, Mohamed Salem Ould Ahmedou Salem, Jean-François Trape, Leonardo K Basco and 1 more

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
75citing papers in PubMed, 2 pooled it
6.1field-weighted citation impact, top 3% 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

75 citing papers in PubMed, 2 syntheses or guidelines pooled it, 112 citations in OpenAlex.

  1. Pooled it
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15 more citing papers are in PubMed but not listed here.

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 5 countries.

Nathalie WurtzUnité de Recherche en Biologie et Epidémiologie Parasitaires, Institut de Recherche Biomédicale des Armées, Parc du Pharo, Marseille Cedex, France. nathalie_wurtz@yahoo.fr
Khadijetou Mint Lekweiry
Hervé Bogreau
Bruno Pradines
Christophe Rogier
Ali Ould Mohamed Salem Boukhary
Jamal Eddine Hafid
Mohamed Salem Ould Ahmedou Salem
Jean-François Trape
Leonardo K Basco
Sébastien Briolant
Unité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes · FRUniversity of Nouakchott Al Aasriya · MRInstitut de Médecine Tropicale du Service de Santé des Armées · FRCadi Ayyad University · MAInstitut de Recherche pour le Développement · SN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDuffy blood group polymorphisms are important in areas where Plasmodium vivax is present because this surface antigen is thought to act as a key receptor for this parasite. In the present study, Duffy blood group genotyping was performed in febrile uninfected and P. vivax-infected patients living in the city of Nouakchott, Mauritania.

methodsPlasmodium vivax was identified by real-time PCR. The Duffy blood group genotypes were determined by standard PCR followed by sequencing of the promoter region and exon 2 of the Duffy gene in 277 febrile individuals. Fisher's exact test was performed in order to assess the significance of variables.

resultsIn the Moorish population, a high frequency of the FYBES/FYBES genotype was observed in uninfected individuals (27.8%), whereas no P. vivax-infected patient had this genotype. This was followed by a high level of FYA/FYB, FYB/FYB, FYB/FYBES and FYA/FYBES genotype frequencies, both in the P. vivax-infected and uninfected patients. In other ethnic groups (Poular, Soninke, Wolof), only the FYBES/FYBES genotype was found in uninfected patients, whereas the FYA/FYBES genotype was observed in two P. vivax-infected patients. In addition, one patient belonging to the Wolof ethnic group presented the FYBES/FYBES genotype and was infected by P. vivax.

conclusionsThis study presents the Duffy blood group polymorphisms in Nouakchott City and demonstrates that in Mauritania, P. vivax is able to infect Duffy-negative patients. Further studies are necessary to identify the process that enables this Duffy-independent P. vivax invasion of human red blood cells.

Indexed as

Polymorphism, GeneticDuffy Blood-Group SystemGene FrequencyGenotypeHumansMalaria, VivaxMauritaniaPlasmodium vivaxPolymerase Chain ReactionReceptors, Cell SurfaceSequence Analysis, DNAACKR1 protein, humanDuffy Blood-Group SystemReceptors, Cell Surface

Identifiers

PMID22050867
PMCPMC3228859
OpenAlexW2128223083

What OpenQuestion holds

Textmetadata
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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.