Evidence map›Paper›PMID 27975120›Full record

ArticleParasitology research2017

Nested PCR targeting intergenic spacer (IGS) in genotyping of Giardia duodenalis isolated from symptomatic and asymptomatic infected Egyptian school children.

Eman M Hussein, Ola A Ismail, Amira B Mokhtar, Samer E Mohamed, Rania M Saad

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In one paragraph

Article in Parasitology research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 13% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 33 citations in OpenAlex.

  1. Pooled it
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  9. Detection ofJournal of parasitic diseases : official organ of the Indian Society for Parasitology · 2021
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  11. The controversies surroundingCurrent research in parasitology & vector-borne diseases · 2021
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  12. Giardia duodenalis Virulence - "To Be, or Not To Be".Current tropical medicine reports · 2021
    Review
  13. Prevalence and genotypic characterization ofFood and waterborne parasitology · 2020
    Article
  14. Prevalence and Zoonotic Potential ofAnimals : an open access journal from MDPI · 2019
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  15. Review
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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Eman M HusseinMedical Parasitology Department, Faculty of Medicine, Suez Canal University, Ismailia, 41522, Egypt. emanmob@hotmail.com.
Ola A IsmailMedical Parasitology Department, Faculty of Medicine, Suez Canal University, Ismailia, 41522, Egypt.
Amira B MokhtarMedical Parasitology Department, Faculty of Medicine, Suez Canal University, Ismailia, 41522, Egypt.
Samer E MohamedMedical Parasitology Department, Faculty of Medicine, Suez Canal University, Ismailia, 41522, Egypt.
Rania M SaadMedical Parasitology Department, Faculty of Medicine, Suez Canal University, Ismailia, 41522, Egypt.
Suez Canal University · EG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Distinct sequences of Giardia duodenalis assemblages raised the hypothesis that certain assemblages may contribute to its clinical outcome. However, sequences analysis is time consuming, expensive, and needs many manual operations. Nested PCR targeting intergenic spacer (IGS) region was applied successfully to genotype G. duodenalis. This study aimed to identify the prevalence of G. duodenalis assemblages among giardiasis school children and its relation to the presence of symptoms using nested IGS/PCR. Of 65 microscopically confirmed Giardia-positive samples, 65 samples were genotyped proving high sensitivity (92.3%) of IGS/PCR. Negative IGS/PCR samples were also negative for β-giardin gene. Subassemblage AI was the commonest with 66.6% (20/30) among asymptomatic children compared to 53.3% (16/30) of symptomatic, while assemblage B was found in 40% (12/30) of symptomatic compared to 20% (6/30) of asymptomatic. The difference was significant. AII was only found in asymptomatic with 13.4% (4/30), while mixed infections (AI&B) were recorded only in 6.6% (2/30) of symptomatic group. A significant relation was found between younger children susceptibility for AI and B infections as presented in 77.7 (12/16) and 83.3% (10/12) of symptomatic, respectively, and 80 (16/80) and 33.4% (2/4) of asymptomatic, respectively. Significant relations were found between AI with intermittent diarrhea and B with chronic. A significant relation was found between assemblage distributions and heavy infection intensity. In conclusion, higher incidence of assemblage B among symptomatic children compared to asymptomatic could denote its possible pathogenic potential.

Indexed as

AdolescentAnimalsChildChild, PreschoolCoinfectionDiarrheaEgyptFecesFemaleGenotypeGiardia lambliaGiardiasisHumansMalePolymerase Chain ReactionPrevalenceAsymptomaticGiardiasisIGSPCRSymptomatic

Identifiers

PMID27975120
OpenAlexW2566592218

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Registered trials

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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.