Evidence map›Paper›PMID 23272170›Full record

ArticlePloS one2012

Trypanosoma cruzi: role of δ-amastin on extracellular amastigote cell invasion and differentiation.

Mário C Cruz, Normanda Souza-Melo, Claudio Vieira da Silva, Wanderson Duarte Darocha, Diana Bahia, Patrícia R Araújo, Santuza R Teixeira, Renato A Mortara

Abstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing 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

26 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Modulation of Virulence Factors duringPathogens (Basel, Switzerland) · 2022
    Review
  5. Review
  6. Article
  7. SystematicFrontiers in chemistry · 2021
    Article
  8. Trypanin Disruption Affects the Motility and Infectivity of the ProtozoanFrontiers in cellular and infection microbiology · 2021
    Article
  9. All Roads Lead to Cytosol:Frontiers in cellular and infection microbiology · 2021
    Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. BALB/c and C57BL/6 Mice Cytokine Responses toFrontiers in microbiology · 2018
    Article
  16. Amastigote Synapse: The Tricks ofFrontiers in microbiology · 2018
    Article
  17. Article
  18. A Brief View of the Surface Membrane Proteins fromJournal of parasitology research · 2017
    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

8 authors.

Mário C CruzDepartamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina-UNIFESP, São Paulo, São Paulo, Brazil.
Normanda Souza-Melo
Claudio Vieira da Silva
Wanderson Duarte Darocha
Diana Bahia
Patrícia R Araújo
Santuza R Teixeira
Renato A Mortara

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Trypanosoma cruzi is a protozoan parasite that comprises different phylogenetic groups and is the causative agent of Chagas' disease. Different T. cruzi strains present differences in infectivity in in vitro and in vivo experimental models, which are likely related to the expression of different virulence factors. Amastin is a surface glycoprotein abundantly expressed on the intracellular mammalian amastigote form of the parasite. In this study, we showed that a highly infective strain (G strain) of extracellular amastigote (EA) invasive forms expressed reduced RNA levels of amastin compared to a less infective strain (CL). The treatment of HeLa cells with recombinant δ-amastin reduced infectivity of EA forms. However, the ectopic expression of δ-amastin accelerated amastigote differentiation into trypomastigotes. Corroborating the virulence behavior in association with amastin expression, the EAs overexpressing amastin were precociously and robustly observed in the liver of susceptible mouse strains (A/JUnib), whereas parasitemia was never detected in in vivo assays. This is the first report on the regulatory role of amastin in the course of both in vitro and in vivo T. cruzi infection.

Indexed as

Amino Acid SequenceAnimalsCell LineChagas DiseaseGene ExpressionHost-Parasite InteractionsHumansLiverMembrane GlycoproteinsMiceMolecular Sequence DataProtozoan ProteinsRecombinant Fusion ProteinsTranscription, GeneticTrypanosoma cruziamastin protein, Trypanosoma cruziMembrane GlycoproteinsProtozoan ProteinsRecombinant Fusion Proteins

Identifiers

PMID23272170
PMCPMC3525664

What OpenQuestion holds

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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.