Evidence map›Paper›PMID 28974215›Full record

ArticleMalaria journal2017

Species and genotype diversity of Plasmodium in malaria patients from Gabon analysed by next generation sequencing.

Albert Lalremruata, Sankarganesh Jeyaraj, Thomas Engleitner, Fanny Joanny, Annika Lang, Sabine Bélard, Ghyslain Mombo-Ngoma, Michael Ramharter, Peter G Kremsner, Benjamin Mordmüller and 1 more

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 1 pooled it
5.0field-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

42 citing papers in PubMed, 1 synthesis or guideline pooled it, 83 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
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  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
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  12. Genetic diversity ofFrontiers in cellular and infection microbiology · 2024
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  15. Review
  16. Malaria: An Overview.Infection and drug resistance · 2023
    Review
  17. Article
  18. Systematic Review on Diversity and Distribution ofPathogens (Basel, Switzerland) · 2022
    Review
  19. Review
  20. An analysis ofJournal of parasitic diseases : official organ of the Indian Society for Parasitology · 2022
    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 4 institutions in 4 countries.

Albert LalremruataInstitut für Tropenmedizin, Eberhard Karls Universität Tübingen, Wilhelmstraße 27, 72074, Tübingen, Germany.
Sankarganesh JeyarajInstitut für Tropenmedizin, Eberhard Karls Universität Tübingen, Wilhelmstraße 27, 72074, Tübingen, Germany.
Thomas EngleitnerInstitut für Tropenmedizin, Eberhard Karls Universität Tübingen, Wilhelmstraße 27, 72074, Tübingen, Germany.
Fanny JoannyInstitut für Tropenmedizin, Eberhard Karls Universität Tübingen, Wilhelmstraße 27, 72074, Tübingen, Germany.
Annika LangInstitut für Tropenmedizin, Eberhard Karls Universität Tübingen, Wilhelmstraße 27, 72074, Tübingen, Germany.
Sabine BélardDepartment of Pediatric Pneumology and Immunology, Charité-Universitätsmedizin Berlin, Berlin, Germany.
Ghyslain Mombo-NgomaCentre de Recherches Médicales de Lambaréné (CERMEL), Lambaréné, Gabon.
Michael RamharterInstitut für Tropenmedizin, Eberhard Karls Universität Tübingen, Wilhelmstraße 27, 72074, Tübingen, Germany.
Peter G KremsnerInstitut für Tropenmedizin, Eberhard Karls Universität Tübingen, Wilhelmstraße 27, 72074, Tübingen, Germany.
Benjamin MordmüllerInstitut für Tropenmedizin, Eberhard Karls Universität Tübingen, Wilhelmstraße 27, 72074, Tübingen, Germany. benjamin.mordmueller@uni-tuebingen.de.
Jana HeldInstitut für Tropenmedizin, Eberhard Karls Universität Tübingen, Wilhelmstraße 27, 72074, Tübingen, Germany.
University of Tübingen · DECentre de Recherche Médicales de Lambaréné · GAGerman Center for Infection Research · DEBerlin Institute of Health at Charité - Universitätsmedizin Berlin · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSix Plasmodium species are known to naturally infect humans. Mixed species infections occur regularly but morphological discrimination by microscopy is difficult and multiplicity of infection (MOI) can only be evaluated by molecular methods. This study investigated the complexity of Plasmodium infections in patients treated for microscopically detected non-falciparum or mixed species malaria in Gabon.

methodsUltra-deep sequencing of nucleus (18S rRNA), mitochondrion, and apicoplast encoded genes was used to evaluate Plasmodium species diversity and MOI in 46 symptomatic Gabonese patients with microscopically diagnosed non-falciparum or mixed species malaria.

resultsDeep sequencing revealed a large complexity of confections in patients with uncomplicated malaria, both on species and genotype levels. Mixed infections involved up to four parasite species (Plasmodium falciparum, Plasmodium malariae, Plasmodium ovale curtisi, and P. ovale wallikeri). Multiple genotypes from each species were determined from the asexual 18S rRNA gene. 17 of 46 samples (37%) harboured multiple genotypes of at least one Plasmodium species. The number of genotypes per sample (MOI) was highest in P. malariae (n = 4), followed by P. ovale curtisi (n = 3), P. ovale wallikeri (n = 3), and P. falciparum (n = 2). The highest combined genotype complexity in samples that contained mixed-species infections was seven.

conclusionsUltra-deep sequencing showed an unexpected breadth of Plasmodium species and within species diversity in clinical samples. MOI of P. ovale curtisi, P. ovale wallikeri and P. malariae infections were higher than anticipated and contribute significantly to the burden of malaria in Gabon.

Indexed as

BiodiversityGenotypeGabonGenetic VariationHigh-Throughput Nucleotide SequencingHumansMalariaPlasmodiumRNA, ProtozoanRNA, Ribosomal, 18SRNA, ProtozoanRNA, Ribosomal, 18SAmpliconMetagenomicsNext-generation sequencingPlasmodium falciparumPlasmodium malariaePlasmodium ovale curtisiPlasmodium ovale wallikeri

Identifiers

PMID28974215
PMCPMC5627438
OpenAlexW2760888089

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.