Evidence map›Paper›PMID 29228901›Full record

ArticleBMC microbiology2017

The relation between Blastocystis and the intestinal microbiota in Swedish travellers.

Joakim Forsell, Johan Bengtsson-Palme, Martin Angelin, Anders Johansson, Birgitta Evengård, Margareta Granlund

Open access · goldAbstract read
In one paragraph

Article in BMC microbiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
5.2field-weighted citation impact, top 4% 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

44 citing papers in PubMed, 81 citations in OpenAlex.

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  20. The regulatory function ofFrontiers in cellular and infection microbiology · 2022
    Review
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

6 authors at 2 institutions in 1 country.

Joakim ForsellDepartment of Clinical Microbiology, Umeå University, -901 87, Umeå, SE, Sweden. joakim.forsell@umu.se.ORCID http://orcid.org/0000-0003-4250-113X
Johan Bengtsson-PalmeDepartment of Infectious Diseases, Institute of Biomedicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Martin AngelinDepartment of Clinical Microbiology, Infectious Diseases, Umeå University, Umeå, Sweden.
Anders JohanssonDepartment of Clinical Microbiology, Bacteriology, and the Laboratory for Molecular Infection Medicine Sweden, Umeå University, Umeå, Sweden.
Birgitta EvengårdDepartment of Clinical Microbiology, Infectious Diseases, Umeå University, Umeå, Sweden.
Margareta GranlundDepartment of Clinical Microbiology, Umeå University, -901 87, Umeå, SE, Sweden.
Umeå University · SEUniversity of Gothenburg · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBlastocystis sp. is a unicellular eukaryote that is commonly found in the human intestine. Its ability to cause disease is debated and a subject for ongoing research. In this study, faecal samples from 35 Swedish university students were examined through shotgun metagenomics before and after travel to the Indian peninsula or Central Africa. We aimed at assessing the impact of travel on Blastocystis carriage and seek associations between Blastocystis and the bacterial microbiota.

resultsWe found a prevalence of Blastocystis of 16/35 (46%) before travel and 15/35 (43%) after travel. The two most commonly Blastocystis subtypes (STs) found were ST3 and ST4, accounting for 20 of the 31 samples positive for Blastocystis. No mixed subtype carriage was detected. All ten individuals with a typable ST before and after travel maintained their initial ST. The composition of the gut bacterial community was not significantly different between Blastocystis-carriers and non-carriers. Interestingly, the presence of Blastocystis was accompanied with higher abundances of the bacterial genera Sporolactobacillus and Candidatus Carsonella. Blastocystis carriage was positively associated with high bacterial genus richness, and negatively correlated to the Bacteroides-driven enterotype. These associations were both largely dependent on ST4 - a subtype commonly described from Europe - while the globally prevalent ST3 did not show such significant relationships.

conclusionsThe high rate of Blastocystis subtype persistence found during travel indicates that long-term carriage of Blastocystis is common. The associations between Blastocystis and the bacterial microbiota found in this study could imply a link between Blastocystis and a healthy microbiota as well as with diets high in vegetables. Whether the associations between Blastocystis and the microbiota are resulting from the presence of Blastocystis, or are a prerequisite for colonization with Blastocystis, are interesting questions for further studies.

Indexed as

Gastrointestinal MicrobiomeTravelAdultBiodiversityBlastocystisBlastocystis InfectionsFecesFemaleHumansMaleMetagenomicsPrevalenceSwedenYoung AdultBlastocystisCandidatus CarsonellaMicrobiotaPersistenceSporolactobacillusSubtypeTransmissionTravel

Identifiers

PMID29228901
PMCPMC5725903
OpenAlexW2774085763

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.