Evidence map›Paper›PMID 22590659›Full record

ArticlePLoS neglected tropical diseases2012

Proteomic analysis of the cyst stage of Entamoeba histolytica.

Ibne Karim M Ali, Rashidul Haque, Abdullah Siddique, Mamun Kabir, Nicholas E Sherman, Sean A Gray, Gerard A Cangelosi, William A Petri

Open access · goldAbstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2012. 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
2.1field-weighted citation impact, top 14% 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, 42 citations in OpenAlex.

  1. Diversity and Plasticity of Virulent Characteristics ofTropical medicine and infectious disease · 2023
    Review
  2. Microbiology spectrum · 2021
    Article
  3. Membranes · 2021
    Article
  4. Encystation ofMicroorganisms · 2021
    Article
  5. Entamoeba stage conversion: progress and new insights.Current opinion in microbiology · 2020
    Review
  6. Review
  7. Acetylcholine UpregulatesFrontiers in cellular and infection microbiology · 2020
    Article
  8. Revisiting Drug Development Against the Neglected Tropical Disease, Amebiasis.Frontiers in cellular and infection microbiology · 2020
    Review
  9. Article
  10. Review
  11. Influence of Micropatterned Grill Lines onFrontiers in cellular and infection microbiology · 2018
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  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

8 authors at 4 institutions in 2 countries.

Ibne Karim M AliDivision of Infectious Disease and International Health, University of Virginia Health System, Charlottesville, Virginia, United States of America. ika3t@virginia.edu
Rashidul Haque
Abdullah Siddique
Mamun Kabir
Nicholas E Sherman
Sean A Gray
Gerard A Cangelosi
William A Petri
International Centre for Diarrhoeal Disease Research · BDCenter for Infectious Disease Research · USUniversity of Virginia Health System · USUniversity of Virginia · US

Funding

FIELD STUDIES OF IMMUNITY TO AMEBIASIS IN BANGLADESHR01AI043596 · NIAID · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI CAROL A GILCHRIST, William A Petri · 1998 to 2026
$7.7M
Accelerated molecular probe pipelineU01AI082186 · NIAID · UNIVERSITY OF WASHINGTON · PI CANGELOSI, GERARD A · 2009 to 2013
$4.7M
NIAID NIH HHS 5R01AI043596NIAID NIH HHS R01 AI043596NIAID NIH HHS U01 AI082186NIAID NIH HHS U01 AI82186
6 · The paper itself

Abstract

backgroundThe category B agent of bioterrorism, Entamoeba histolytica has a two-stage life cycle: an infective cyst stage, and an invasive trophozoite stage. Due to our inability to effectively induce encystation in vitro, our knowledge about the cyst form remains limited. This also hampers our ability to develop cyst-specific diagnostic tools.

aimsThree main aims were (i) to identify E. histolytica proteins in cyst samples, (ii) to enrich our knowledge about the cyst stage, and (iii) to identify candidate proteins to develop cyst-specific diagnostic tools.

methodsCysts were purified from the stool of infected individuals using Percoll (gradient) purification. A highly sensitive LC-MS/MS mass spectrometer (Orbitrap) was used to identify cyst proteins.

resultsA total of 417 non-redundant E. histolytica proteins were identified including 195 proteins that were never detected in trophozoite-derived proteomes or expressed sequence tag (EST) datasets, consistent with cyst specificity. Cyst-wall specific glycoproteins Jacob, Jessie and chitinase were positively identified. Antibodies produced against Jacob identified cysts in fecal specimens and have potential utility as a diagnostic reagent. Several protein kinases, small GTPase signaling molecules, DNA repair proteins, epigenetic regulators, and surface associated proteins were also identified. Proteins we identified are likely to be among the most abundant in excreted cysts, and therefore show promise as diagnostic targets. MAJOR

conclusionsThe proteome data generated here are a first for naturally-occurring E. histolytica cysts, and they provide important insights into the infectious cyst form. Additionally, numerous unique candidate proteins were identified which will aid the development of new diagnostic tools for identification of E. histolytica cysts.

Indexed as

ProteomeChildChild, PreschoolChromatography, LiquidEntamoeba histolyticaEntamoebiasisFecesFemaleHumansMaleSpores, ProtozoanTandem Mass SpectrometryProteome

Identifiers

PMID22590659
PMCPMC3348168
OpenAlexW2015177243

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.