Evidence map›Paper›PMID 15845464›Full record

ArticleInfection and immunity2005

CD4+ T cells but Not CD8+ or gammadelta+ lymphocytes are required for host protection against Mycobacterium avium infection and dissemination through the intestinal route.

Mary Petrofsky, Luiz E Bermudez

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.8field-weighted citation impact, top 16% 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

14 citing papers in PubMed, 30 citations in OpenAlex.

  1. Article
  2. Frontiers in immunology · 2020
    Article
  3. BCG Vaccination InducesFrontiers in immunology · 2019
    Article
  4. Presence of Infected Gr-1Frontiers in immunology · 2018
    Article
  5. Article
  6. Article
  7. Article
  8. Pathogenesis of systemic Mycobacterium avium infection in pigs through histological analysis of hepatic lesions.Canadian journal of veterinary research = Revue canadienne de recherche veterinaire · 2010
    Article
  9. Article
  10. Article
  11. Article
  12. Identification of Mycobacterium avium pathogenicity island important for macrophage and amoeba infection.Proceedings of the National Academy of Sciences of the United States of America · 2007
    Article
  13. Article
  14. Review
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

2 authors at 2 institutions in 1 country.

Mary PetrofskyDept. of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, OR 97331, USA.
Luiz E Bermudez
California Pacific Medical Center · USOregon State University · US

Funding

NIAID NIH HHS R01-AI25767
6 · The paper itself

Abstract

Disseminated Mycobacterium avium infection is common in AIDS patients that do not receive anti-AIDS therapy and in patients for whom therapy fails. M. avium is commonly acquired by ingestion, and a large number of AIDS patients have M. avium in their intestinal tracts. To better understand the dynamics of the infection in patients with AIDS, we studied orally infected mice. To determine if immunocompetent mice challenged orally with M. avium can develop protection against the infection, and if so, which cell population(s) is responsible for the protection, we exposed wild-type as well as CD4(-/-), CD8(-/-), and gammadelta(-/-) knockout mice to low concentrations of M. avium strain 101 given orally, followed by treatment with azithromycin. After 1 month, the mice were challenged with kanamycin-resistant M. avium 104. Only CD4(+) T cells appeared to be required for protection against the second challenge. Both CD4(+) and CD8(+) T cells produced comparable amounts of gamma interferon after the first exposure to the bacterium. Tumor necrosis factor alpha was elevated in CD4(+) T cells but not in CD8(+) T cells. Following exposure to a small inoculum of mycobacteria orally, wild-type mice did not develop disseminated infection for approximately 4 months, although viable bacteria could be observed in the mesenteric lymph nodes. The ingestion of small numbers of M. avium cells induces a protective immune response in the intestines against subsequent infection. However, the bacteria remain viable in intestinal lymph nodes and might disseminate later.

Indexed as

Administration, OralAnimalsCD18 AntigensCD4-Positive T-LymphocytesCD8-Positive T-LymphocytesCytokinesHumansIntestinesLiverLymphocyte ActivationMiceMice, Inbred C57BLMice, KnockoutMycobacterium avium ComplexMycobacterium avium-intracellulare InfectionReceptors, Antigen, T-Cell, gamma-deltaCD18 AntigensCytokinesReceptors, Antigen, T-Cell, gamma-delta

Identifiers

PMID15845464
PMCPMC1087360
OpenAlexW1994199542

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.