Evidence map›Paper›PMID 22709605›Full record

ArticleMalaria journal2012

Genetic polymorphism and natural selection in the C-terminal 42 kDa region of merozoite surface protein-1 among Plasmodium vivax Korean isolates.

Jung-Mi Kang, Hye-Lim Ju, Yoo-Mi Kang, Dong-Hyun Lee, Sung-Ung Moon, Woon-Mok Sohn, Jae-Won Park, Tong-Soo Kim, Byoung-Kuk Na

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
3.1field-weighted citation impact, top 9% 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

20 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Spatiotemporal Changes inMicroorganisms · 2022
    Article
  7. Article
  8. Review
  9. Review
  10. PCR-RFLP for Rapid Subtyping ofThe Korean journal of parasitology · 2017
    Article
  11. Diversity ofThe Korean journal of parasitology · 2017
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. 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

9 authors at 4 institutions in 1 country.

Jung-Mi KangDepartment of Parasitology and Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju 660-751, Korea.
Hye-Lim Ju
Yoo-Mi Kang
Dong-Hyun Lee
Sung-Ung Moon
Woon-Mok Sohn
Jae-Won Park
Tong-Soo Kim
Byoung-Kuk Na
Gyeongsang National University · KRGachon University · KRInha University · KRKorea University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe carboxy-terminal 42 kDa region of Plasmodium vivax merozoite surface protein-1 (PvMSP-1₄₂) is a leading candidate antigen for blood stage vaccine development. However, this region has been observed to be highly polymorphic among filed isolates of P. vivax. Therefore it is important to analyse the existing diversity of this antigen in the field isolates of P. vivax. In this study, the genetic diversity and natural selection in PvMSP-1₄₂ among P. vivax Korean isolates were analysed.

methodsA total of 149 P. vivax-infected blood samples collected from patients in Korea were used. The region flanking PvMSP-1₄₂ was amplified by PCR, cloned into Escherichia coli, and then sequenced. The polymorphic characteristic and natural selection of PvMSP-1₄₂ were analysed using the DNASTAR, MEGA4 and DnaSP programs.

resultsA total of 11 distinct haplotypes of PvMSP-1₄₂ with 40 amino acid changes, as compared to the reference Sal I sequence, were identified in the Korean P. vivax isolates. Most of the mutations were concentrated in the 33 kDa fragment (PvMSP-1₃₃), but a novel mutation was found in the 19 kDa fragment (PvMSP-1₁₉). PvMSP-1₄₂ of Korean isolates appeared to be under balancing selection. Recombination may also play a role in the resulting genetic diversity of PvMSP-1₄₂.

conclusionsPvMSP-1₄₂ of Korean P. vivax isolates displayed allelic polymorphisms caused by mutation, recombination and balancing selection. These results will be useful for understanding the nature of the P. vivax population in Korea and for development of a PvMSP-1₄₂ based vaccine against P. vivax.

Indexed as

Polymorphism, GeneticSelection, GeneticAmino Acid SequenceBloodCloning, MolecularCluster AnalysisDNA, ProtozoanHumansKoreaMalaria, VivaxMerozoite Surface Protein 1Molecular Sequence DataMutationPhylogenyPlasmodium vivaxPolymerase Chain ReactionDNA, ProtozoanMerozoite Surface Protein 1

Identifiers

PMID22709605
PMCPMC3487983
OpenAlexW2125378258

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.