Distribution and relevance of Dientamoeba fragilis and Blastocystis species in gastroenteritis: results from a case-control study

The actual role of Dientamoeba fragilis and Blastocystis in patients with gastrointestinal symptoms is still under debate. A multicenter case-control study was performed in The Netherlands to elucidate the clinical relevance of molecular diagnostics results in gastroenteritis (GE). Samples from this...

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Published in:European journal of clinical microbiology & infectious diseases 2020, Vol.39 (1), p.197-203
Main Authors: de Boer, Maria Dullaert, Schuurs, Theo A., Vermeer, Marloes, Ruijs, Gijs J.H.M., van der Zanden, Adri G. M., Weel, Jan F., Bruijnesteijn van Coppenraet, Lesla E.S.
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Age
Biomedical and Life Sciences
Biomedicine
Blastocystis
Children
Diarrhea
Dientamoeba fragilis
Gastroenteritis
Gastrointestinal symptoms
Internal Medicine
Intestine
Medical Microbiology
Microbiomes
Original Article
Population studies
Samples
Statistical analysis
Statistical methods
Statistical significance
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container_title European journal of clinical microbiology & infectious diseases
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creator de Boer, Maria Dullaert
Schuurs, Theo A.
Vermeer, Marloes
Ruijs, Gijs J.H.M.
van der Zanden, Adri G. M.
Weel, Jan F.
Bruijnesteijn van Coppenraet, Lesla E.S.
description The actual role of Dientamoeba fragilis and Blastocystis in patients with gastrointestinal symptoms is still under debate. A multicenter case-control study was performed in The Netherlands to elucidate the clinical relevance of molecular diagnostics results in gastroenteritis (GE). Samples from this case-control study were used to perform a detailed analysis on the presence of D. fragilis and Blastocystis in relation to gastrointestinal symptoms. In the present study, a real-time PCR for Blastocystis was performed on 1374 case samples and 1026 control samples from the multicenter gastroenteritis case-control study previously tested for D. fragilis . Prevalence of both micro-organisms was highest in children under 20 years of age and lowest in the oldest age group. A significantly lower overall detection of D. fragilis and Blastocystis was found in cases (both 25.8%) as compared to controls (37.6% and 40.0%, respectively). The difference for D. fragilis was statistically significant for subjects above 20 years of age. For Blastocystis , the difference was statistically significant in all age groups, except in children less than 5 years of age. A negative relation between D. fragilis -positive cases and diarrhea was found in this study population. More GE symptoms were reported in cases without D. fragilis or Blastocystis . In the present study, prevalence of both D. fragilis and Blastocystis is lower in cases with gastroenteritic symptoms than in controls. Besides, in cases with D. fragilis or Blastocystis , no association is shown between any of the GE symptoms. Interestingly, this suggests that the presence of these protozoans may be considered characteristic of a healthy intestinal microbiome.
doi_str_mv 10.1007/s10096-019-03710-z
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subjects Age
Biomedical and Life Sciences
Biomedicine
Blastocystis
Children
Diarrhea
Dientamoeba fragilis
Gastroenteritis
Gastrointestinal symptoms
Internal Medicine
Intestine
Medical Microbiology
Microbiomes
Original Article
Population studies
Samples
Statistical analysis
Statistical methods
Statistical significance
title Distribution and relevance of Dientamoeba fragilis and Blastocystis species in gastroenteritis: results from a case-control study
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