Evidence map›Paper›PMID 11874893›Full record

ArticleClinical and diagnostic laboratory immunology2002

Interpretation of the gamma interferon test for diagnosis of subclinical paratuberculosis in cattle.

G Jungersen, A Huda, J J Hansen, P Lind

Abstract read
In one paragraph

Article in Clinical and diagnostic laboratory immunology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing 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

24 citing papers in PubMed.

  1. Lining the small intestine with mycobacteriophages protects fromProceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  2. Interferon-gamma producing CD4Veterinary research · 2024
    Article
  3. Article
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  5. Review
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  7. Review
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  9. Early Detection ofFrontiers in veterinary science · 2021
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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

4 authors.

G JungersenDanish Veterinary Institute, DK-1790 Copenhagen V, Denmark. gju@vetinst.dk
A Huda
J J Hansen
P Lind

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A group of 252 cattle without clinical signs of paratuberculosis (paraTB) in 10 herds infected with paraTB and a group of 117 cattle in 5 herds without paraTB were selected. Whole-blood samples were stimulated with bovine, avian, and johnin purified protein derivative (PPD) and examined for gamma interferon (IFN-gamma) release. For diagnosis of paraTB, satisfactory estimated specificities (95 to 99%) could be obtained by johnin PPD stimulation irrespective of interpretation relative to bovine PPD or no-antigen stimulation alone, but numbers of test positives in the infected herds varied from 64 to 112 with different interpretation criteria. For a limited number of test-positive animals, no change in the test results could be observed with increasing antigen concentrations but IFN-gamma responses were significantly reduced (P < 0.0001) and four out of seven reactors tested negative when stimulation was performed on day-old samples. Denmark is free of bovine tuberculosis, but cross-reactivity with paraTB could be documented for cattle more than 14 months old in paraTB-infected herds compared with those in non-paraTB-infected herds. In both paraTB-free and paraTB-infected herds, false positives were observed when the test was applied to calves less than 15 months of age. Until novel antigen formulations more specific for these diseases are available, interpretation of the IFN-gamma test must be individually adjusted to fit specific needs and the context within which the test is applied and, for paraTB, the test seems most appropriate for use as a supportive tool for evaluation of disease-preventive measures in young stock.

Indexed as

Interferon-gammaAnimalsAntibodies, BacterialAntigens, BacterialCattleCattle DiseasesConcanavalin ACross ReactionsDairyingEnterotoxinsFemaleParatuberculosisTuberculinAntibodies, BacterialAntigens, BacterialConcanavalin Aenterotoxin B, staphylococcalEnterotoxinsInterferon-gammaTuberculin

Identifiers

PMID11874893
PMCPMC119921

What OpenQuestion holds

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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.