Evidence map›Paper›PMID 24033456›Full record

ArticleMolecular microbiology2013

Evidence for the role of vacuolar soluble pyrophosphatase and inorganic polyphosphate in Trypanosoma cruzi persistence.

Melina Galizzi, Juan M Bustamante, Jianmin Fang, Kildare Miranda, Lia C Soares Medeiros, Rick L Tarleton, Roberto Docampo

Open access · bronzeAbstract read
In one paragraph

Article in Molecular microbiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

21 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. Review
  3. Inorganic Polyphosphate Is in the Surface ofPathogens (Basel, Switzerland) · 2024
    Article
  4. Review
  5. Article
  6. New insights into the role of acidocalcisomes in trypanosomatids.The Journal of eukaryotic microbiology · 2022
    Review
  7. The IPBiochimica et biophysica acta. Molecular cell research · 2021
    Review
  8. Article
  9. The acidocalcisome inositol-1,4,5-trisphosphate receptor ofThe Journal of biological chemistry · 2019
    Article
  10. Review
  11. Importance of polyphosphate in theMicrobial cell (Graz, Austria) · 2018
    Article
  12. Article
  13. Acidocalcisomes of eukaryotes.Current opinion in cell biology · 2016
    Review
  14. Article
  15. Polyphosphate and acidocalcisomes.Biochemical Society transactions · 2016
    Review
  16. Article
  17. Article
  18. Article
  19. Review
  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.

Melina GalizziCenter for Tropical and Emerging Global Diseases and Department of Cellular Biology, University of Georgia, Athens, GA, 30602, USA.
Juan M Bustamante
Jianmin Fang
Kildare Miranda
Lia C Soares Medeiros
Rick L Tarleton
Roberto Docampo
University of Georgia · USUniversidade Federal do Rio de Janeiro · BR

Funding

The contractile vacuole of Trypanosoma cruziR01AI068647 · NIAID · UNIVERSITY OF GEORGIA · PI DOCAMPO, ROBERTO · 2006 to 2010
$1.8M
Pathogenesis of Trypanosoma cruzi infectionR01AI107663 · NIAID · UNIVERSITY OF GEORGIA · PI DOCAMPO, ROBERTO · 2014 to 2017
$1.5M
Pathogenesis of Trypanosoma cruzi infectionR56AI107663 · NIAID · UNIVERSITY OF GEORGIA · PI DOCAMPO, ROBERTO · 2013 to 2013
$350k
NIAID NIH HHS AI068647NIAID NIH HHS AI107663NIAID NIH HHS R01 AI068647NIAID NIH HHS R01 AI107663NIAID NIH HHS R56 AI107663
6 · The paper itself

Abstract

Trypanosoma cruzi infection leads to development of a chronic disease but the mechanisms that the parasite utilizes to establish a persistent infection despite activation of a potent immune response by the host are currently unknown. Unusual characteristics of T. cruzi are that it possesses cellular levels of pyrophosphate (PPi ) at least 10 times higher than those of ATP and molar levels of inorganic polyphosphate (polyP) within acidocalcisomes. We characterized an inorganic soluble EF-hand containing pyrophosphatase from T. cruzi (TcVSP) that, depending on the pH and cofactors, can hydrolyse either pyrophosphate (PPi ) or polyphosphate (polyP). The enzyme is localized to both acidocalcisomes and cytosol. Overexpression of TcVSP (TcVSP-OE) resulted in a significant decrease in cytosolic PPi , and short and long-chain polyP levels. Additionally, the TcVSP-OE parasites showed a significant growth defect in fibroblasts, less responsiveness to hyperosmotic stress, and reduced persistence in tissues of mice, suggesting that PPi and polyP are essential for the parasite to resist the stressful conditions in the host and to maintain a persistent infection.

Indexed as

AnimalsCells, CulturedChagas DiseaseChlorocebus aethiopsCloning, MolecularDiphosphatesDisease Models, AnimalHumansMiceMice, Inbred C57BLMice, KnockoutPolyphosphatesProtozoan ProteinsPyrophosphatasesTrypanosoma cruziVacuolesDiphosphatesPolyphosphatesProtozoan ProteinsPyrophosphatasesVirulence Factors

Identifiers

PMID24033456
PMCPMC3826824
OpenAlexW1918094267

What OpenQuestion holds

Textmetadata
LicenceTDM
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.