Evidence map›Paper›PMID 25927592›Full record

ArticleMalaria journal2015

Prevalence of K13-propeller polymorphisms in Plasmodium falciparum from China-Myanmar border in 2007-2012.

Zenglei Wang, Sony Shrestha, Xiaolian Li, Jun Miao, Lili Yuan, Mynthia Cabrera, Caitlin Grube, Zhaoqing Yang, Liwang Cui

Abstract 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 58 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
58citing 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

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

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Article
  6. Indigenous emergence and spread ofAntimicrobial agents and chemotherapy · 2024
    Article
  7. Antimicrobial agents and chemotherapy · 2023
    Article
  8. Article
  9. Different In Vitro Drug Susceptibility Profile ofTropical medicine and infectious disease · 2022
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Plasmodium falciparum resistance to ACTs: Emergence, mechanisms, and outlook.International journal for parasitology. Drugs and drug resistance · 2021
    Article
  15. Article
  16. Ten-Year Molecular Surveillance of Drug-ResistantFrontiers in cellular and infection microbiology · 2021
    Article
  17. Article
  18. Observational
  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

9 authors.

Zenglei WangDepartment of Entomology, The Pennsylvania State University, University Park, PA, 16802, USA. zxw11@psu.edu.
Sony ShresthaDepartment of Entomology, The Pennsylvania State University, University Park, PA, 16802, USA. szs17@psu.edu.
Xiaolian LiDepartment of Entomology, The Pennsylvania State University, University Park, PA, 16802, USA. xul11@psu.edu.
Jun MiaoDepartment of Entomology, The Pennsylvania State University, University Park, PA, 16802, USA. jum23@psu.edu.
Lili YuanDepartment of Entomology, The Pennsylvania State University, University Park, PA, 16802, USA. luy16@psu.edu.
Mynthia CabreraDepartment of Entomology, The Pennsylvania State University, University Park, PA, 16802, USA. mxc92@psu.edu.
Caitlin GrubeDepartment of Entomology, The Pennsylvania State University, University Park, PA, 16802, USA. chg125@psu.edu.
Zhaoqing YangDepartment of Pathogen Biology and Immunology, Kunming Medical University, Kunming, Yunnan Province, 650500, China. zhaoqingy@yahoo.com.
Liwang CuiDepartment of Entomology, The Pennsylvania State University, University Park, PA, 16802, USA. luc2@psu.edu.

Funding

Southeast Asia Malaria Research CenterU19AI089672 · NIAID · UNIVERSITY OF SOUTH FLORIDA · PI CUI, LIWANG · 2010 to 2023
$28.9M
NIAID NIH HHS U19 AI089672
6 · The paper itself

Abstract

backgroundThe recent emergence and spread of artemisinin resistance in the Greater Mekong Subregion poses a great threat to malaria control and elimination. A K13-propeller gene (K13), PF3D7_1343700, has been associated lately with artemisinin resistance both in vitro and in vivo. This study aimed to investigate the K13 polymorphisms in Plasmodium falciparum parasites from the China-Myanmar border area where artemisinin use has the longest history.

methodsA total of 180 archived P. falciparum isolates containing 191 parasite clones, mainly collected in 2007-2012 from the China-Myanmar area, were used to obtain the full-length K13 gene sequences.

resultsSeventeen point mutations were identified in 46.1% (88/191) parasite clones, of which seven were new. The F446I mutation predominated in 27.2% of the parasite clones. The C580Y mutation that is correlated with artemisinin resistance was detected at a low frequency of 1.6%. Collectively, 43.1% of the parasite clones contained point mutations in the kelch domain of the K13 gene. Moreover, there was a trend of increase in the frequency of parasites carrying kelch domain mutations through the years of sample collection. In addition, a microsatellite variation in the N-terminus of the K13 protein was found to have reached a high frequency (69.1%).

conclusionsThis study documented the presence of mutations in the K13 gene in parasite populations from the China-Myanmar border. Mutations present in the kelch domain have become prevalent (>40%). A predominant mutation F446I and a prevalent microsatellite variation in the N-terminus were identified, but their importance in artemisinin resistance remains to be elucidated.

Indexed as

Polymorphism, GeneticAntimalarialsArtemisininsChinaMutationMyanmarPlasmodium falciparumProtozoan ProteinsAntimalarialsartemisininArtemisininsProtozoan Proteins

Identifiers

PMID25927592
PMCPMC4404080

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.