Evidence map›Paper›PMID 19801420›Full record

ArticleEukaryotic cell2009

Phenotypic and gene expression changes among clonal type I strains of Toxoplasma gondii.

Asis Khan, Michael S Behnke, Ildiko R Dunay, Michael W White, L David Sibley

Abstract read
In one paragraph

Article in Eukaryotic cell, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing 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

40 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Unifying Virulence Evaluation inFrontiers in cellular and infection microbiology · 2022
    Review
  7. Frontiers in immunology · 2022
    Article
  8. Review
  9. The zebrafish as a novel model for theDisease models & mechanisms · 2020
    Article
  10. Article
  11. Review
  12. Influence of the Host and Parasite Strain on the Immune Response DuringFrontiers in cellular and infection microbiology · 2020
    Review
  13. Article
  14. Article
  15. AmBio · 2019
    Article
  16. Article
  17. Article
  18. Article
  19. Virulence in Mice of aFrontiers in cellular and infection microbiology · 2018
    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

5 authors.

Asis KhanDepartment of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110, USA.
Michael S Behnke
Ildiko R Dunay
Michael W White
L David Sibley

Funding

MOLECULAR BASIS OF TOXOPLASMOSIS IN AIDS PATIENTSR01AI036629 · NIAID · WASHINGTON UNIVERSITY · PI SIBLEY, L. DAVID · 1994 to 2013
$5.3M
Infectivity and Transmission of ToxoplasmosisR01AI059176 · NIAID · WASHINGTON UNIVERSITY · PI SIBLEY, L. DAVID · 2004 to 2013
$3.9M
Essential Cell Cycle Mechanisms in ToxoplasmaR01AI077662 · NIAID · UNIVERSITY OF SOUTH FLORIDA · PI WHITE, MICHAEL W · 2009 to 2013
$1.8M
NIAID NIH HHS AI059176NIAID NIH HHS AI077662NIAID NIH HHS R01 AI036629NIAID NIH HHS R01 AI059176NIAID NIH HHS R01 AI077662
6 · The paper itself

Abstract

Toxoplasma gondii has an unusual population structure consisting of three clonal lineages that predominate in North America and Europe. This simple pattern has encouraged the use of only a few laboratory isolates that are representative of each lineage. Principle among these is the type I RH strain, originally isolated from a child with encephalitis some 70 years ago. Comparison of different passages of the RH strain that have been propagated differently over the intervening time period revealed that the commonly used clonal line called RH-ERP was not representative of natural isolates of the type I lineage. Notably, RH-ERP formed much larger plaques than other type 1 strains, including a separate, earlier derived isolate of the RH strain. The RH-ERP variant also showed enhanced extracellular survival, faster growth, and decreased differentiation compared to the prototype type I strain GT1. Comparison of gene expression differences in the RH-ERP line revealed that several ABC transporters were upregulated, which may provide a growth advantage in vitro. These findings illustrate that dramatic phenotypic changes can arise in laboratory strains, emphasizing the need for comparison with recent clinical isolates.

Indexed as

Gene Expression RegulationAnimalsCell DifferentiationCell SurvivalClone CellsFibroblastsGene Expression ProfilingGenotypeHumansMaleMicePhenotypeReverse Transcriptase Polymerase Chain ReactionToxoplasmaToxoplasmosis, AnimalVirulence

Identifiers

PMID19801420
PMCPMC2794221

What OpenQuestion holds

Textmetadata
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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.