Evidence map›Paper›PMID 14977944›Full record

ArticleInfection and immunity2004

Role of NK cells and gamma interferon in transplacental passage of Toxoplasma gondii in a mouse model of primary infection.

Ahmed Abou-Bacar, Alexander W Pfaff, Sophie Georges, Valérie Letscher-Bru, Denis Filisetti, Odile Villard, Elisabeth Antoni, Jean-Paul Klein, Ermanno Candolfi

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
4.2field-weighted citation impact, top 6% 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

16 citing papers in PubMed, 62 citations in OpenAlex.

  1. Neutrophils at the Maternal-Fetal Interface: Agents of Protection or Destruction?American journal of reproductive immunology (New York, N.Y. : 1989) · 2025
    Review
  2. Review
  3. Article
  4. Journal of parasitic diseases : official organ of the Indian Society for Parasitology · 2019
    Article
  5. Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. Review
  11. Parasite dissemination and the pathogenesis of toxoplasmosis.European journal of microbiology & immunology · 2011
    Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. 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

9 authors at 2 institutions in 1 country.

Ahmed Abou-BacarInstitut de Parasitologie et de Pathologie Tropicale, INSERM U392, 67000 Strasbourg, France. a.abou-bacar@medecine.u-strasbg.fr
Alexander W Pfaff
Sophie Georges
Valérie Letscher-Bru
Denis Filisetti
Odile Villard
Elisabeth Antoni
Jean-Paul Klein
Ermanno Candolfi
Institut d’Epidémiologie Neurologique et de Neurologie Tropicale · FRInserm · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Protective immunity in mice infected with Toxoplasma gondii is mainly mediated by NK cells, CD4 and CD8 T cells, and type 1 cytokines, such as gamma interferon (IFN-gamma). To clarify the roles of NK cells and IFN-gamma in protection against primary congenital toxoplasmosis, we used recombination activating gene 2 knockout (RAG-2(-/-)) mice, which lack T and B lymphocytes, in comparison with the wild-type BALB/c model. RAG-2(-/-) mice had a significantly lower risk of fetal toxoplasmosis than BALB/c mice (25 versus 63.9%; P = 0.003). This protection was associated with an increased number of maternal NK cells, IFN-gamma secretion by spleen cells, and decreased parasitemia. In the RAG-2(-/-) mice, NK cell depletion increased both the rate of fetal infection, to 56.5% (P = 0.02), and the blood parasite burden. Conversely, in the BALB/c mice, this treatment did not modify maternofetal transmission or the blood parasite burden. Neutralization of IFN-gamma in both infected RAG-2(-/-) and BALB/c mice decreased congenital Toxoplasma transmission, contrasting with an exacerbation of maternal infection. These data suggest that a partially protective immunity against congenital toxoplasmosis is achieved due to the increased number of NK cells in RAG-2(-/-) mice. However, it seems that IFN-gamma enhances, directly or indirectly, the transplacental transmission.

Indexed as

AnimalsCell CountDNA-Binding ProteinsFemaleInfectious Disease Transmission, VerticalInterferon-gammaKiller Cells, NaturalMiceMice, Inbred BALB CMice, KnockoutNeutralization TestsPregnancyPregnancy Complications, ParasiticToxoplasmosis, AnimalToxoplasmosis, CongenitalDNA-Binding ProteinsInterferon-gammaRag2 protein, mouseV(D)J recombination activating protein 2

Identifiers

PMID14977944
PMCPMC356035
OpenAlexW2099312809

What OpenQuestion holds

Textmetadata
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.