Evidence map›Paper›PMID 21506817›Full record

ArticleThe Journal of parasitology2011

Identification of a sporozoite-specific antigen from Toxoplasma gondii.

Dolores Hill, Cathleen Coss, J P Dubey, Kristen Wroblewski, Mari Sautter, Tiffany Hosten, Claudia Muñoz-Zanzi, Ernest Mui, Shawn Withers, Kenneth Boyer and 8 more

Abstract read
In one paragraph

Article in The Journal of parasitology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed
8.7field-weighted citation impact, top 1% 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

67 citing papers in PubMed, 145 citations in OpenAlex.

  1. Article
  2. Isolation, genotyping and phenotypingFood and waterborne parasitology · 2025
    Review
  3. Article
  4. Highlights ofParasitology · 2025
    Article
  5. Establishment of an ELISA for detecting oocyst-derivedFrontiers in veterinary science · 2025
    Article
  6. Article
  7. Article
  8. Spread ofFood and waterborne parasitology · 2023
    Article
  9. Limited value of current and newFrontiers in parasitology · 2023
    Article
  10. Article
  11. Review
  12. Mining the Proteome ofAnimals : an open access journal from MDPI · 2022
    Review
  13. Review
  14. Review
  15. New Avenues to DesignFrontiers in immunology · 2022
    Article
  16. Identification of Oocyst-DrivenMicroorganisms · 2021
    Review
  17. Article
  18. Article
  19. Article
  20. Frontiers in psychiatry · 2021
    Review

7 more citing papers are in PubMed but not listed here.

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

18 authors at 2 institutions in 1 country.

Dolores HillUnited States Department of Agriculture, Agricultural Research Service, Animal and Natural Resources Institute, Animal Parasitic Diseases Laboratory, Beltsville, Maryland 20705, USA. dolores.hill@ars.usda.gov
Cathleen Coss
J P Dubey
Kristen Wroblewski
Mari Sautter
Tiffany Hosten
Claudia Muñoz-Zanzi
Ernest Mui
Shawn Withers
Kenneth Boyer
Gretchen Hermes
Jessica Coyne
Frank Jagdis
Andrew Burnett
Patrick McLeod
Holmes Morton
Donna Robinson
Rima McLeod
Chicago Department of Public Health · USAgricultural Research Service · US

Funding

Towards a Vaccine to Prevent ToxoplasmosisU01AI077887 · NIAID · UNIVERSITY OF CHICAGO · PI MCLEOD, RIMA L · 2008 to 2012
$4.2M
TREATMENT OF CONGENITAL TOXOPLASMOSISR01AI027530 · NIAID · UNIVERSITY OF CHICAGO · PI MCLEOD, RIMA L · 1989 to 2010
$2.8M
NIAID NIH HHS R01AI027530NIAID NIH HHS U01 AI077887
6 · The paper itself

Abstract

Reduction of risk for human and food animal infection with Toxoplasma gondii is hampered by the lack of epidemiological data documenting the predominant routes of infection (oocyst vs. tissue cyst consumption) in horizontally transmitted toxoplasmosis. Existing serological assays can determine previous exposure to the parasite, but not the route of infection. We have used difference gel electrophoresis, in combination with tandem mass spectroscopy and Western blot, to identify a sporozoite-specific protein (T. gondii embryogenesis-related protein [TgERP]), which elicited antibody and differentiated oocyst- versus tissue cyst-induced infection in pigs and mice. The recombinant protein was selected from a cDNA library constructed from T. gondii sporozoites; this protein was used in Western blots and probed with sera from T. gondii -infected humans. Serum antibody to TgERP was detected in humans within 6-8 mo of initial oocyst-acquired infection. Of 163 individuals in the acute stage of infection (anti- T. gondii IgM detected in sera, or < 30 in the IgG avidity test), 103 (63.2%) had detectable antibodies that reacted with TgERP. Of 176 individuals with unknown infection route and in the chronic stage of infection (no anti- T. gondii IgM detected in sera, or > 30 in the IgG avidity test), antibody to TgERP was detected in 31 (17.6%). None of the 132 uninfected individuals tested had detectable antibody to TgERP. These data suggest that TgERP may be useful in detecting exposure to sporozoites in early T. gondii infection and implicates oocysts as the agent of infection.

Indexed as

AdolescentAdultAnimalsAntibodies, ProtozoanAntigens, ProtozoanBlotting, WesternBrainCatsCell LineElectrophoresis, Gel, Two-DimensionalFemaleHumansMaleMeatMicePregnancyAntibodies, ProtozoanAntigens, ProtozoanProtozoan Proteins

Identifiers

PMID21506817
PMCPMC3684278
OpenAlexW2161177862

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.