Evidence map›Paper›PMID 21818313›Full record

ArticlePloS one2011

Trypanosoma cruzi epimastigotes are able to store and mobilize high amounts of cholesterol in reservosome lipid inclusions.

Miria G Pereira, Ernesto S Nakayasu, Celso Sant'Anna, Nuccia N T De Cicco, Georgia C Atella, Wanderley de Souza, Igor C Almeida, Narcisa Cunha-e-Silva

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.2field-weighted citation impact, top 21% 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

25 citing papers in PubMed, 56 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Iron Uptake ControlsAntioxidants (Basel, Switzerland) · 2023
    Article
  6. Article
  7. Metabolic Alteration ofPathogens (Basel, Switzerland) · 2022
    Article
  8. Lipid and fatty acid metabolism in trypanosomatids.Microbial cell (Graz, Austria) · 2021
    Review
  9. A new subspecies ofParasitology · 2021
    Article
  10. Article
  11. Article
  12. Biogenesis and Breakdown of Lipid Droplets in Pathological Conditions.Frontiers in cell and developmental biology · 2021
    Review
  13. Article
  14. Article
  15. Review
  16. Lipidomics and anti-trypanosomatid chemotherapy.Clinical and translational medicine · 2017
    Review
  17. Article
  18. Article
  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 at 4 institutions in 2 countries.

Miria G PereiraInstituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
Ernesto S Nakayasu
Celso Sant'Anna
Nuccia N T De Cicco
Georgia C Atella
Wanderley de Souza
Igor C Almeida
Narcisa Cunha-e-Silva
Universidade Federal do Rio de Janeiro · BRNational Institute of Science and Technology for Structural Biology and Bioimaging · BRThe University of Texas at El Paso · USInstituto Nacional de Metrologia, Qualidade e Tecnologia · BR

Funding

TOXICOLOGY PROJECTG12RR008124 · NCRR · UNIVERSITY OF TEXAS EL PASO · PI JOHNSON, KYLE L · 1992 to 2011
$20.8M
NCRR NIH HHS 2G12RR008124-16A1NCRR NIH HHS 2G12RR008124-16A1S1NCRR NIH HHS G12 RR008124NIGMS NIH HHS S06GM00812
6 · The paper itself

Abstract

backgroundReservosomes are lysosome-related organelles found in Trypanosoma cruzi epimastigotes. They represent the last step in epimastigote endocytic route, accumulating a set of proteins and enzymes related to protein digestion and lipid metabolism. The reservosome matrix contains planar membranes, vesicles and lipid inclusions. Some of the latter may assume rectangular or sword-shaped crystalloid forms surrounded by a phospholipid monolayer, resembling the cholesterol crystals in foam cells. METHODOLOGY/PRINCIPAL

findingsUsing Nile Red fluorimetry and fluorescence microscopy, as well as electron microscopy, we have established a direct correlation between serum concentration in culture medium and the presence of crystalloid lipid inclusions. Starting from a reservosome purified fraction, we have developed a fractionation protocol to isolate lipid inclusions. Gas-chromatography mass-spectrometry (GC-MS) analysis revealed that lipid inclusions are composed mainly by cholesterol and cholesterol esters. Moreover, when the parasites with crystalloid lipid-loaded reservosomes were maintained in serum free medium for 48 hours the inclusions disappeared almost completely, including the sword shaped ones. CONCLUSIONS/SIGNIFICANCE: Taken together, our results suggest that epimastigote forms of T. cruzi store high amounts of neutral lipids from extracellular medium, mostly cholesterol or cholesterol esters inside reservosomes. Interestingly, the parasites are able to disassemble the reservosome cholesterol crystalloid inclusions when submitted to serum starvation.

Indexed as

Life Cycle StagesAnimalsBiological TransportCholesterolCulture Media, Serum-FreeFluorometryInclusion BodiesMicroscopy, FluorescenceOxazinesTime FactorsTrypanosoma cruziCholesterolCulture Media, Serum-Freenile redOxazines

Identifiers

PMID21818313
PMCPMC3144899
OpenAlexW2048450131

What Socratic 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 Socratic graph.