Evidence map›Paper›PMID 29110722›Full record

ArticleInfectious diseases of poverty2017

Molecular markers for artemisinin and partner drug resistance in natural Plasmodium falciparum populations following increased insecticide treated net coverage along the slope of mount Cameroon: cross-sectional study.

Tobias O Apinjoh, Regina N Mugri, Olivo Miotto, Hanesh F Chi, Rolland B Tata, Judith K Anchang-Kimbi, Eleanor M Fon, Delphine A Tangoh, Robert V Nyingchu, Christopher Jacob and 5 more

Abstract read
In one paragraph

Article in Infectious diseases of poverty, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

24 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Molecular Surveillance ofPathogens (Basel, Switzerland) · 2026
    Article
  3. NovelAntimicrobial agents and chemotherapy · 2025
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  4. Review
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  6. Article
  7. Evolution of Plasmodium falciparum antimalarial drug resistance markers post-adoption of artemisinin-based combination therapies in Yaounde, Cameroon.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2023
    Article
  8. Article
  9. Status of the Multidrug Resistance-1 Gene ofJournal of tropical medicine · 2023
    Article
  10. Article
  11. Article
  12. Prevalence of Mutations in theTropical medicine and infectious disease · 2022
    Article
  13. Article
  14. Characterization ofAntimicrobial agents and chemotherapy · 2021
    Article
  15. Article
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  17. Article
  18. An open dataset ofWellcome open research · 2021
    Article
  19. Article
  20. 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

15 authors.

Tobias O ApinjohDepartment of Biochemistry and Molecular Biology, University of Buea, Buea, Cameroon. apinjoh.tobias@ubuea.cm.
Regina N MugriDepartment of Microbiology and Parasitology, University of Buea, Buea, Cameroon.
Olivo MiottoMahidol-Oxford Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Hanesh F ChiDepartment of Microbiology and Parasitology, University of Buea, Buea, Cameroon.
Rolland B TataDepartment of Microbiology and Parasitology, University of Buea, Buea, Cameroon.
Judith K Anchang-KimbiDepartment of Zoology and Animal Physiology, University of Buea, Buea, Cameroon.
Eleanor M FonDepartment of Biochemistry and Molecular Biology, University of Buea, Buea, Cameroon.
Delphine A TangohDepartment of Biochemistry and Molecular Biology, University of Buea, Buea, Cameroon.
Robert V NyingchuDepartment of Biochemistry and Molecular Biology, University of Buea, Buea, Cameroon.
Christopher JacobWellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, UK.
Roberto AmatoWellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, UK.
Abdoulaye DjimdeMalaria Research and Training Centre, Bamako, Mali.
Dominic KwiatkowskiWellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, UK.
Eric A AchidiDepartment of Biochemistry and Molecular Biology, University of Buea, Buea, Cameroon.
Alfred Amambua-NgwaMRC Unit, Fajara, The Gambia.

Funding

Medical Research Council G0600718Medical Research Council MC_EX_MR/K02440X/1Medical Research Council MR/M006212/1Wellcome Trust 204911/Z/16/Z
6 · The paper itself

Abstract

backgroundDrug resistance is one of the greatest challenges of malaria control programmes, with the monitoring of parasite resistance to artemisinins or to Artemisinin Combination Therapy (ACT) partner drugs critical to elimination efforts. Markers of resistance to a wide panel of antimalarials were assessed in natural parasite populations from southwestern Cameroon.

methodsIndividuals with asymptomatic parasitaemia or uncomplicated malaria were enrolled through cross-sectional surveys from May 2013 to March 2014 along the slope of mount Cameroon. Plasmodium falciparum malaria parasitaemic blood, screened by light microscopy, was depleted of leucocytes using CF11 cellulose columns and the parasite genotype ascertained by sequencing on the Illumina HiSeq platform.

resultsA total of 259 participants were enrolled in this study from three different altitudes. While some alleles associated with drug resistance in pfdhfr, pfmdr1 and pfcrt were highly prevalent, less than 3% of all samples carried mutations in the pfkelch13 gene, none of which were amongst those associated with slow artemisinin parasite clearance rates in Southeast Asia. The most prevalent haplotypes were triple mutants Pfdhfr I

conclusionsThe predominance of the Pf pfcrt CVIET and Pf dhfr IRN triple mutant parasites and absence of pfkelch13 resistance alleles suggest that the amodiaquine and pyrimethamine components of AS-AQ and SP may no longer be effective in their role while chloroquine resistance still persists in southwestern Cameroon.

Indexed as

Drug ResistanceAdolescentAdultAntimalarialsArtemisininsBiomarkersCameroonChildChild, PreschoolCross-Sectional StudiesDrug CombinationsFemaleHumansInfantInsecticide-Treated BednetsMalariaAntimalarialsartemisininArtemisininsBiomarkersDrug CombinationsProtozoan ProteinsDrug resistanceMolecular markersPlasmodium falciparum

Identifiers

PMID29110722
PMCPMC5674235

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.