Evidence map›Paper›PMID 26174801›Full record

ArticleParasites & vectors2015

Bacteria-induced egg hatching differs for Trichuris muris and Trichuris suis.

Nermina Vejzagić, Roberto Adelfio, Jennifer Keiser, Helene Kringel, Stig Milan Thamsborg, Christian M O Kapel

Abstract read
In one paragraph

Article in Parasites & vectors, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
–field-weighted citation impact
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

20 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Detangling the Crosstalk BetweenFrontiers in cellular and infection microbiology · 2022
    Review
  7. Review
  8. Review
  9. Article
  10. The interplay betweenParasitology · 2021
    Article
  11. Parasitology · 2021
    Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Reciprocal Interactions between Nematodes and Their Microbial Environments.Frontiers in cellular and infection microbiology · 2017
    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.

Nermina VejzagićSection for Organismal Biology, Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Frederiksberg C, Denmark. nerminav@plen.ku.dk.
Roberto AdelfioMedical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland. Roberto.Adelfio@unibas.ch.
Jennifer KeiserMedical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, Basel, Switzerland. Jennifer.Keiser@unibas.ch.
Helene KringelParasite Technologies A/S, Hørsholm, Denmark. hek@para-tech.dk.
Stig Milan ThamsborgParasite Technologies A/S, Hørsholm, Denmark. smt@sund.ku.dk.
Christian M O KapelSection for Organismal Biology, Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Frederiksberg C, Denmark. chk@plen.ku.dk.

Funding

European Research Council 614739
6 · The paper itself

Abstract

backgroundEggs of the porcine whipworm Trichuris suis are currently explored in human clinical trials as a treatment of immune-mediated diseases. In this context, only the infective, embryonated eggs, constitute the Active Pharmaceutical Ingredient (API). The rodent whipworm, Trichuris muris is commonly used as a laboratory model to study Trichuris biology. The embryonated eggs (containing a fully developed larva) are biologically active and will invade the large intestinal mucosa of the host. This study aims to assess the in vitro hatching of T. muris and T. suis eggs in various bacterial cultures as a measure for their biological activity.

methodsEggs of T. muris and T. suis were incubated with Escherichia coli strain (BL-21) at three concentrations in a slightly modified in vitro egg hatching assay previously developed for T. muris. Additionally, E. coli strains (M15, SG13009, PMC103, JM109, TUNER, DH5alpha, TOP10) and five Gram-positive bacteria (Enterococcus caccae, Streptococcus hyointestinalis, Lactobacillus amylovorus, L. murinus, and L. reuteri) were tested as a hatching stimulus for T. muris and T. suis eggs.

resultsWhereas T. muris eggs hatched, T. suis did not, even when exposed to different concentrations and strains of E. coli after 4 and 24-hour incubation. When incubated with Gram-positive bacteria, only T. muris eggs showed noticeable hatching after 20 h, although with high variability.

conclusionsThe observed difference in hatching of T. muris and T. suis eggs incubated with selected bacteria, indicate significant biological differences which may reflect specific adaptation to different host-specific gut microbiota.

Indexed as

AnimalsEscherichia coliGram-Positive BacteriaOvumSpecies SpecificityTrichuris

Identifiers

PMID26174801
PMCPMC4501204

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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.