Evidence map›Paper›PMID 30802245›Full record

ArticlePLoS neglected tropical diseases2019

A single test approach for accurate and sensitive detection and taxonomic characterization of Trypanosomes by comprehensive analysis of internal transcribed spacer 1 amplicons.

Alex Kiarie Gaithuma, Junya Yamagishi, Axel Martinelli, Kyoko Hayashida, Naoko Kawai, Megasari Marsela, Chihiro Sugimoto

Open access · goldAbstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
3.8field-weighted citation impact, top 6% 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

21 citing papers in PubMed, 39 citations in OpenAlex.

  1. Determination of the efficacy of red ginger (Open veterinary journal · 2026
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  6. Molecular identification of new Trypanosoma evansi type non-A/B isolates from buffaloes and cattle in Indonesia.Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria · 2024
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  10. Detection ofVeterinary world · 2023
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  15. Review
  16. Comparison of Microscopy, Card Agglutination Test forJournal of veterinary research · 2022
    Article
  17. Comprehensive analysis of oral administration of Vitamin E on the early stage ofJournal of parasitic diseases : official organ of the Indian Society for Parasitology · 2021
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  18. Article
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  20. Diversity of trypanosomes in wildlife of the Kafue ecosystem, Zambia.International journal for parasitology. Parasites and wildlife · 2020
    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 at 1 institution in 2 countries.

Alex Kiarie GaithumaDivision of Collaboration and Education, Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan.ORCID 0000-0003-1799-0859
Junya YamagishiDivision of Collaboration and Education, Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan.
Axel MartinelliGI-CORE, Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan.
Kyoko HayashidaDivision of Collaboration and Education, Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan.
Naoko KawaiDivision of Collaboration and Education, Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan.
Megasari MarselaDivision of Collaboration and Education, Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan.
Chihiro SugimotoDivision of Collaboration and Education, Research Center for Zoonosis Control, Hokkaido University, Sapporo, Japan.
Hokkaido University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To improve our knowledge on the epidemiological status of African trypanosomiasis, better tools are required to monitor Trypanosome genotypes circulating in both mammalian hosts and tsetse fly vectors. This is important in determining the diversity of Trypanosomes and understanding how environmental factors and control efforts affect Trypanosome evolution. We present a single test approach for molecular detection of different Trypanosome species and subspecies using newly designed primers to amplify the Internal Transcribed Spacer 1 region of ribosomal RNA genes, coupled to Illumina sequencing of the amplicons. The protocol is based on Illumina's widely used 16s bacterial metagenomic analysis procedure that makes use of multiplex PCR and dual indexing. Results from analysis of wild tsetse flies collected from Zambia and Zimbabwe show that conventional methods for Trypanosome species detection based on band size comparisons on gels is not always able to accurately distinguish between T. vivax and T. godfreyi. Additionally, this approach shows increased sensitivity in the detection of Trypanosomes at species level with the exception of the Trypanozoon subgenus. We identified subspecies of T. congolense, T. simiae, T. vivax, and T. godfreyi without the need for additional tests. Results show T. congolense Kilifi subspecies is more closely related to T. simiae than to other T. congolense subspecies. This agrees with previous studies using satellite DNA and 18s RNA analysis. While current classification does not list any subspecies for T. godfreyi, we observed two distinct clusters for these species. Interestingly, sequences matching T. congolense Tsavo (now classified as T. simiae Tsavo) clusters distinctly from other T. simiae Tsavo sequences suggesting the Nannomonas group is more divergent than currently thought thus the need for better classification criteria. This method presents a simple but comprehensive way of identification of Trypanosome species and subspecies-specific using one PCR assay for molecular epidemiology of trypanosomes.

Indexed as

Polymerase Chain ReactionAnimalsDNA PrimersDNA, ProtozoanDNA, Ribosomal SpacerGenotyping TechniquesHigh-Throughput Nucleotide SequencingReproducibility of ResultsRNA, Ribosomal, 18SSensitivity and SpecificitySequence Analysis, DNATrypanosomaTrypanosomiasis, AfricanTsetse FliesDNA PrimersDNA, ProtozoanDNA, Ribosomal SpacerRNA, Ribosomal, 18S

Identifiers

PMID30802245
PMCPMC6414030
OpenAlexW2916255246

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.