Evidence map›Paper›PMID 26867958›Full record

ArticleScientific reports2016

Induction of virulence factors in Giardia duodenalis independent of host attachment.

Samantha J Emery, Mehdi Mirzaei, Daniel Vuong, Dana Pascovici, Joel M Chick, Ernest Lacey, Paul A Haynes

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
6.6field-weighted citation impact, top 3% 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

30 citing papers in PubMed, 60 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
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  6. Article
  7. The macrophage polarization inFrontiers in immunology · 2024
    Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. The Cysteine Protease Giardipain-1 fromInternational journal of molecular sciences · 2022
    Article
  13. One Step Forward with Dry Surface Biofilm (DSB) ofInternational journal of molecular sciences · 2022
    Article
  14. Article
  15. Infection and drug resistance · 2022
    Review
  16. Article
  17. Article
  18. Giardia duodenalis Virulence - "To Be, or Not To Be".Current tropical medicine reports · 2021
    Review
  19. Host-Parasite Interaction of Atlantic salmon (Frontiers in immunology · 2021
    Article
  20. 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 2 institutions in 2 countries.

Samantha J EmeryDepartment of Chemistry and Biomolecular Sciences, Macquarie University, North Ryde, NSW 2109, Australia.
Mehdi MirzaeiDepartment of Chemistry and Biomolecular Sciences, Macquarie University, North Ryde, NSW 2109, Australia.
Daniel VuongMicrobial Screening Technologies, Pty, Ltd, Smithfield, NSW 2165, Australia.
Dana PascoviciAustralian Proteome Analysis Facility (APAF), Macquarie University, North Ryde, NSW, 2109, Australia.
Joel M ChickDepartment of Cell Biology, Harvard Medical School, Boston, Massachusetts, USA.
Ernest LaceyMicrobial Screening Technologies, Pty, Ltd, Smithfield, NSW 2165, Australia.
Paul A HaynesDepartment of Chemistry and Biomolecular Sciences, Macquarie University, North Ryde, NSW 2109, Australia.
Macquarie University · AUHarvard University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Giardia duodenalis is responsible for the majority of parasitic gastroenteritis in humans worldwide. Host-parasite interaction models in vitro provide insights into disease and virulence and help us to understand pathogenesis. Using HT-29 intestinal epithelial cells (IEC) as a model we have demonstrated that initial sensitisation by host secretions reduces proclivity for trophozoite attachment, while inducing virulence factors. Host soluble factors triggered up-regulation of membrane and secreted proteins, including Tenascins, Cathepsin-B precursor, cystatin, and numerous Variant-specific Surface Proteins (VSPs). By comparison, host-cell attached trophozoites up-regulated intracellular pathways for ubiquitination, reactive oxygen species (ROS) detoxification and production of pyridoxal phosphate (PLP). We reason that these results demonstrate early pathogenesis in Giardia involves two independent host-parasite interactions. Motile trophozoites respond to soluble secreted signals, which deter attachment and induce expression of virulence factors. Trophozoites attached to host cells, in contrast, respond by up-regulating intracellular pathways involved in clearance of ROS, thus anticipating the host defence response.

Indexed as

Host-Parasite InteractionsCell AdhesionGiardia lambliaGiardiasisHT29 CellsHumansModels, BiologicalPhenotypeProteomicsProtozoan ProteinsSolubilityStaining and LabelingTrophozoitesVirulence FactorsProtozoan ProteinsVirulence Factors

Identifiers

PMID26867958
PMCPMC4751611
OpenAlexW2254181201

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.