Evidence map›Paper›PMID 9125562›Full record

ArticleInfection and immunity1997

The spv genes on the Salmonella dublin virulence plasmid are required for severe enteritis and systemic infection in the natural host.

S J Libby, L G Adams, T A Ficht, C Allen, H A Whitford, N A Buchmeier, S Bossie, D G Guiney

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed
14.4field-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

54 citing papers in PubMed, 141 citations in OpenAlex.

  1. Cross-species genomic analysis ofOne health (Amsterdam, Netherlands) · 2026
    Article
  2. Infection biology ofEcoSal Plus · 2024
    Review
  3. Article
  4. Review:Frontiers in veterinary science · 2023
    Review
  5. Article
  6. Article
  7. Article
  8. Frontiers in cellular and infection microbiology · 2021
    Article
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  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
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  20. 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

8 authors at 1 institution in 1 country.

S J LibbyDepartment of Medicine, University of California, San Diego, La Jolla 92093-0640, USA. slibby@popmail.ucsd.edu
L G Adams
T A Ficht
C Allen
H A Whitford
N A Buchmeier
S Bossie
D G Guiney
University of California, San Diego · US

Funding

TL MOLECULES AND GAMMA-DELTA T CELLSP01DK035108 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI VARICI, NISSI · 1986 to 2013
$19.2M
PLASMID-MEDIATED VIRULENCE IN SALMONELLAR01AI032178 · NIAID · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI GUINEY, DONALD G. · 1993 to 2008
$3.1M
NIAID NIH HHS AI-32178NIDDK NIH HHS DK-35108
6 · The paper itself

Abstract

The pathogenic role of the spv (Salmonella plasmid virulence) genes of Salmonella dublin was determined in the natural, bovine host. Since the lack of overt signs of enteritis or enterocolitis due to Salmonella infections in mice has limited the development of a convenient experimental system to study enteric disease, we used calves to study the contribution of the spv genes to S. dublin-induced salmonellosis. Since the SpvR transcriptional regulator is required for expression of the spvABCD operon, we constructed an spvR knockout mutation in a calf-virulent strain of S. dublin. Calves were infected with the wild-type strain, an spvR mutant, and an spvR mutant containing a complementing plasmid. Calves that were infected with the wild type or the complemented spvR mutant rapidly developed severe diarrhea and became moribund. Calves that were infected with the spvR mutant showed little or no clinical signs of systemic salmonellosis and developed only mild diarrhea. The survival and growth of the wild-type strain and the spvR mutant were determined by using blood-derived bovine monocytes. Wild-type S. dublin survived and grew inside cells, while the spvR mutant did not proliferate. These results suggest that the spv genes of S. dublin promote enhanced intracellular proliferation in intestinal tissues and at extraintestinal sites in the natural host.

Indexed as

AnimalsCattleCells, CulturedCloning, MolecularDiarrheaEnteritisEnterocolitisFemaleGene Expression Regulation, BacterialGenetic Complementation TestIleumMacrophagesMiceOperonPlasmidsSalmonella

Identifiers

PMID9125562
PMCPMC175217
OpenAlexW2133548378

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.