Evidence map›Paper›PMID 31744492›Full record

ArticleMalaria journal2019

Genetic polymorphism of merozoite surface proteins 1 and 2 of Plasmodium falciparum in the China-Myanmar border region.

Cang-Lin Zhang, Hong-Ning Zhou, Quan Liu, Ya-Ming Yang

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

11 citing papers in PubMed, 21 citations in OpenAlex.

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  6. Geographical and temporal dynamics of genetic diversity ofJournal of parasitic diseases : official organ of the Indian Society for Parasitology · 2024
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  7. Article
  8. Article
  9. Temporal Changes in the Genetic Diversity ofPathogens (Basel, Switzerland) · 2021
    Article
  10. Article
  11. Low Allelic Variation ofIranian journal of parasitology
    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

4 authors at 2 institutions in 2 countries.

Cang-Lin ZhangYunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Yunnan Provincial Center of Malaria Research, Yunnan Institute of Parasitic Diseases, Pu'er, 665000, Yunnan, China.
Hong-Ning ZhouYunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Yunnan Provincial Center of Malaria Research, Yunnan Institute of Parasitic Diseases, Pu'er, 665000, Yunnan, China.
Quan LiuSchool of Life Sciences and Engineering, Foshan University, Foshan, 528225, Guangdong, China. liuquan1973@hotmail.com.ORCID http://orcid.org/0000-0003-3411-3196
Ya-Ming YangYunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research, Yunnan Provincial Center of Malaria Research, Yunnan Institute of Parasitic Diseases, Pu'er, 665000, Yunnan, China. yangymsm@126.com.
Yunnan Institute of Parasitic Diseases · CNFoshan University · CN

Funding

National Basic Research Program of China (973 Program) 2016YFC1200500
6 · The paper itself

Abstract

backgroundMalaria is a major public health problem in the China-Myanmar border region. The genetic structure of malaria parasite may affect its transmission model and control strategies. The present study was to analyse genetic diversity of Plasmodium falciparum by merozoite surface proteins 1 and 2 (MSP1 and MSP2) and to determine the multiplicity of infection in clinical isolates in the China-Myanmar border region.

methodsVenous blood samples (172) and filter paper blood spots (70) of P. falciparum isolates were collected from the patients of the China-Myanmar border region from 2006 to 2011. The genomic DNA was extracted, and the msp1 and msp2 genes were genotyped by nested PCR using allele-specific primers for P. falciparum.

resultsA total of 215 P. falciparum clinical isolates were genotyped at the msp1 (201) and msp2 (204), respectively. For the msp1 gene, MAD20 family was dominant (53.49%), followed by the K1 family (44.65%), and the RO33 family (12.56%). For the msp2 gene, the most frequent allele was the FC27 family (80.93%), followed by the 3D7 family (75.81%). The total multiplicity of infection (MOI) of msp1 and msp2 was 1.76 and 2.21, with a prevalence of 64.19% and 72.09%, respectively. A significant positive correlation between the MOI and parasite density was found in the msp1 gene of P. falciparum. Sequence analysis revealed 38 different alleles of msp1 (14 K1, 23 MAD20, and 1 RO33) and 52 different alleles of msp2 (37 3D7 and 15 FC27).

conclusionThe present study showed the genetic polymorphisms with diverse allele types of msp1 and msp2 as well as the high MOI of P. falciparum clinical isolates in the China-Myanmar border region.

Indexed as

Polymorphism, GeneticAntigens, ProtozoanChinaMalaria, FalciparumMerozoite Surface Protein 1MyanmarPlasmodium falciparumProtozoan ProteinsAntigens, ProtozoanMerozoite Surface Protein 1merozoite surface protein 2, PlasmodiumProtozoan ProteinsGenetic polymorphismMerozoite surface proteinPlasmodium falciparumThe China–Myanmar border region

Identifiers

PMID31744492
PMCPMC6862846
OpenAlexW2990904584

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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.