Evidence map›Paper›PMID 26658895›Full record

ArticlePLoS pathogens2015

Schistosomes Enhance Plasminogen Activation: The Role of Tegumental Enolase.

Barbara C Figueiredo, Akram A Da'dara, Sergio C Oliveira, Patrick J Skelly

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
5.1field-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

42 citing papers in PubMed, 67 citations in OpenAlex.

  1. Review
  2. Oleum cinnamomi disruptsFrontiers in microbiology · 2026
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  6. Review
  7. Review
  8. Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Pathogens (Basel, Switzerland) · 2021
    Article
  14. Schistosome immunomodulators.PLoS pathogens · 2021
    Review
  15. Article
  16. Article
  17. Article
  18. Review
  19. 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

4 authors at 3 institutions in 2 countries.

Barbara C FigueiredoDepartment of Infectious Disease and Global Health, Cummings School of Veterinary Medicine, Tufts University, North Grafton, Massachusetts, United States of America.
Akram A Da'daraDepartment of Infectious Disease and Global Health, Cummings School of Veterinary Medicine, Tufts University, North Grafton, Massachusetts, United States of America.
Sergio C OliveiraDepartamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
Patrick J SkellyDepartment of Infectious Disease and Global Health, Cummings School of Veterinary Medicine, Tufts University, North Grafton, Massachusetts, United States of America.
Tufts University · USNational Council for Scientific and Technological Development · BRUniversidade Federal de Minas Gerais · BR

Funding

Gene silencing in schistosomes using RNAiR01AI056273 · NIAID · TUFTS UNIVERSITY BOSTON · PI Patrick J Skelly · 2004 to 2026
$7.2M
NIAID NIH HHS AI-056273NIAID NIH HHS HHSN272201000005CNIAID NIH HHS HHSN272201000005INIAID NIH HHS R01 AI056273
6 · The paper itself

Abstract

Schistosoma mansoni is a blood fluke parasite that causes schistosomiasis, a debilitating disease of global public health importance. These relatively large parasites are able to survive prolonged periods in the human vasculature without inducing stable blood clots around them. We show here that the intravascular life stages (schistosomula and adult males and females) can all promote significant plasminogen (PLMG) activation in the presence of tissue plasminogen activator (tPA). This results in the generation of the potent fibrinolytic agent plasmin which could degrade blood clots forming around the worms in vivo. We demonstrate that S. mansoni enolase (SmEno) is a host-interactive tegumental enzyme that, in recombinant form, can bind PLMG and promote its activation. Like classical members of the enolase protein family, SmEno can catalyze the interconversion of 2-phospho-D-glycerate (2-PGA) and phosphoenolpyruvate (PEP). The enzyme has maximal activity at pH 7.5, requires Mg2+ for optimal activity and can be inhibited by NaF but not mefloquin. Suppressing expression of the SmEno gene significantly diminishes enolase mRNA levels, protein levels and surface enzyme activity but, surprisingly, does not affect the ability of the worms to promote PLMG activation. Thus, while SmEno can enhance PLMG activation, our analysis suggests that it is not the only contributor to the parasite's ability to perform this function. We show that the worms possess several other PLMG-binding proteins in addition to SmEno and these may have a greater importance in schistosome-driven PLMG activation.

Indexed as

AnimalsBlotting, WesternDisease Models, AnimalEnzyme-Linked Immunosorbent AssayHelminth ProteinsImmunohistochemistryPhosphopyruvate HydratasePlasminogenReal-Time Polymerase Chain ReactionRNA, Small InterferingSchistosoma mansoniSchistosomiasis mansoniTransfectionHelminth ProteinsPhosphopyruvate HydratasePlasminogenRNA, Small Interfering

Identifiers

PMID26658895
PMCPMC4676649
OpenAlexW2204809370

What OpenQuestion holds

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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.