Evidence map›Paper›PMID 10531242›Full record

ArticleInfection and immunity1999

Immune CD8(+) T cells prevent reactivation of Toxoplasma gondii infection in the immunocompromised host.

I A Khan, W R Green, L H Kasper, K A Green, J D Schwartzman

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
0.7field-weighted citation impact, top 36% 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

22 citing papers in PubMed, 49 citations in OpenAlex.

  1. Trial
  2. Review
  3. Vaccines · 2025
    Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. Frontiers in cellular and infection microbiology · 2019
    Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  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

5 authors at 2 institutions in 2 countries.

I A KhanDepartment of Medicine, Dartmouth Medical School, Lebanon, New Hampshire 03756, USA. Imtiaz.Khan@dartmouth.edu
W R Green
L H Kasper
K A Green
J D Schwartzman
Czech Academy of Sciences, Institute of Microbiology · CZDartmouth College · US

Funding

LONG TERM IMMUNITY AGAINST TOXOPLASMOSISR01AI033325 · NIAID · LOUISIANA STATE UNIV HSC NEW ORLEANS · PI KHAN, IMTIAZ AHMED · 1998 to 2020
$6.2M
LONG TERM IMMUNITY AGAINST TOXOPLASMOSISR21AI033325 · NIAID · DARTMOUTH COLLEGE · PI KHAN, IMTIAZ AHMED · 1997 to 1997
–
TOXOPLASMA GONDII MEDIATED IMMUNOSUPPRESSIONR29AI033325 · NIAID · DARTMOUTH COLLEGE · PI KHAN, IMTIAZ AHMED · 1992 to 1996
–
NIAID NIH HHS AI33325NIAID NIH HHS R01 AI033325
6 · The paper itself

Abstract

Toxoplasma gondii remains a serious cause of morbidity and mortality in individuals that are immunosuppressed, patients with AIDS in particular. The cellular immune response, especially by gamma interferon (IFN-gamma)-producing CD8(+) T cells, is an essential component of protective immunity against the parasite. In the present study the role of CD8(+) T cells during the reactivation of Toxoplasma infection in an immunocompromised murine model was evaluated. Chronically infected mice were challenged with LP-BM5 virus, and the kinetics of CD8(+) T-cell function was studied. At 10 weeks after viral infection, mice showed obvious signs of systemic illness and began to die. At this stage, CD8(+) T cells were unresponsive to antigenic stimulation and unable to kill Toxoplasma-infected targets. IFN-gamma production by the CD8(+) T cells from dual-infected animals reached background levels, and a dramatic fall in the frequency of precursor cytotoxic T lymphocytes was observed. Histopathological analysis of the tissues demonstrated signs of disseminated toxoplasmosis as a result of reactivation of infection. However, treatment of the dual-infected animals with immune CD8(+) T cells at 5 weeks post-LP-BM5 challenge prevented the reactivation of toxoplasmosis, and mice continued to live. Our study for the first time demonstrates a therapeutic role for CD8(+) T cells against an opportunistic infection in an immunocompromised state.

Indexed as

AnimalsCD8-Positive T-LymphocytesFemaleImmunocompromised HostImmunotherapy, AdoptiveInterferon-gammaLymphocyte ActivationMiceMice, Inbred C57BLToxoplasmosisInterferon-gamma

Identifiers

PMID10531242
PMCPMC96968
OpenAlexW1900084733

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.