Evidence map›Paper›PMID 33084568›Full record

ArticleeLife2020

Artemisinin exposure at the ring or trophozoite stage impacts

Harvie P Portugaliza, Shinya Miyazaki, Fiona Ja Geurten, Christopher Pell, Anna Rosanas-Urgell, Chris J Janse, Alfred Cortés

Abstract read
In one paragraph

Article in eLife, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing 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

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

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Prevalence ofPathogens (Basel, Switzerland) · 2026
    Article
  6. Observational
  7. Gametocyte production and transmission fitness of African and AsianAntimicrobial agents and chemotherapy · 2025
    Article
  8. Gametocyte production and transmission fitness of African and AsianbioRxiv : the preprint server for biology · 2025
    Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Biology and epidemiology ofParasite epidemiology and control · 2023
    Review
  18. Cripowellins PauseMolecules (Basel, Switzerland) · 2023
    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

7 authors.

Harvie P PortugalizaISGlobal, Hospital Clinic - Universitat de Barcelona, Barcelona, Spain.ORCID 0000-0003-3038-6699
Shinya MiyazakiDepartment of Parasitology, Leiden University Medical Center, Leiden, Netherlands.
Fiona Ja GeurtenDepartment of Parasitology, Leiden University Medical Center, Leiden, Netherlands.
Christopher PellDepartment of Global Health, Amsterdam University Medical Centers, location Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands.
Anna Rosanas-UrgellDepartment of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium.
Chris J JanseDepartment of Parasitology, Leiden University Medical Center, Leiden, Netherlands.
Alfred CortésISGlobal, Hospital Clinic - Universitat de Barcelona, Barcelona, Spain.ORCID 0000-0003-0730-6582

Funding

European Commission 2016-1346Ministerio de Economía y Competitividad SAF2016-76190-R
6 · The paper itself

Abstract

Malaria transmission is dependent on the formation of gametocytes in the human blood. The sexual conversion rate, the proportion of asexual parasites that convert into gametocytes at each multiplication cycle, is variable and reflects the relative parasite investment between transmission and maintaining the infection. The impact of environmental factors such as drugs on sexual conversion rates is not well understood. We developed a robust assay using gametocyte-reporter parasite lines to accurately measure the impact of drugs on sexual conversion rates, independently from their gametocytocidal activity. We found that exposure to subcurative doses of the frontline antimalarial drug dihydroartemisinin (DHA) at the trophozoite stage resulted in a ~ fourfold increase in sexual conversion. In contrast, no increase was observed when ring stages were exposed or in cultures in which sexual conversion was stimulated by choline depletion. Our results reveal a complex relationship between antimalarial drugs and sexual conversion, with potential public health implications.

Indexed as

AntimalarialsArtemisininsPlasmodium falciparumTrophozoitesAntimalarialsArtemisininsartenimolArtemisinincell biologyGametocytesinfectious diseaseMalariamicrobiologyP. falciparumPfAP2-Gsexual commitmentsexual conversion rate

Identifiers

PMID33084568
PMCPMC7577739

What OpenQuestion holds

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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.