Evidence map›Paper›PMID 9673284›Full record

ArticleInfection and immunity1998

Phospholipase A of Yersinia enterocolitica contributes to pathogenesis in a mouse model.

D H Schmiel, E Wagar, L Karamanou, D Weeks, V L Miller

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
3.8field-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

49 citing papers in PubMed, 103 citations in OpenAlex.

  1. Selective Inhibition ofPharmaceutics · 2025
    Article
  2. Review
  3. VpdC is a ubiquitin-activated phospholipase effector that regulatesProceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  4. Review
  5. Article
  6. Comparative genomic insights intoMicrobial genomics · 2020
    Article
  7. Article
  8. Article
  9. Bacterial Sphingomyelinases and Phospholipases as Virulence Factors.Microbiology and molecular biology reviews : MMBR · 2016
    Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Phospholipases A₁.International journal of molecular sciences · 2011
    Review
  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 3 institutions in 2 countries.

D H SchmielDepartment of Microbiology and Molecular Genetics, University of California, Los Angeles, CA 90095, USA.
E Wagar
L Karamanou
D Weeks
V L Miller
Laboratory of Molecular Genetics · PLUniversity of California, Los Angeles · USWashington University in St. Louis · US

Funding

GENETIC REGULATION OF AIL IN YERSINIA ENTEROCLITICAF32AI009265 · NIAID · WASHINGTON UNIVERSITY · PI SCHMIEL, DEBORAH H · 1995 to 1997
–
ENTRY INTO EUKARYOTIC CELLS BY SALMONELLA AND YERSINIAK04AI001230 · NIAID · WASHINGTON UNIVERSITY · PI MILLER, VIRGINIA L · 1994 to 1998
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NIAID NIH HHS AI01230NIAID NIH HHS AI09265NIAID NIH HHS F32 AI009265
6 · The paper itself

Abstract

Some isolates of Yersinia enterocolitica exhibit phospholipase activity, which has been linked to lecithin-dependent hemolysis (M. Tsubokura, K. Otsoki, I. Shimohira, and H. Yamamoto, Infect. Immun. 25:939-942, 1979). A gene encoding Y. enterocolitica phospholipase was identified, and analysis of the nucleotide sequence revealed two tandemly transcribed open reading frames. The first, yplA, has 74% identity and 85% similarity to the phospholipase A found in Serratia liquefaciens. Though the other, yplB, was less similar to the downstream accessory protein found in S. liquefaciens, the organization in both species is similar. Subsequently, a yplA-null Y. enterocolitica strain, YEDS10, was constructed and demonstrated to be phospholipase negative by plate and spectrophotometric assays. To ascertain whether the phospholipase has a role in pathogenesis, YEDS10 was tested in the mouse model. In experiments with perorally infected BALB/c mice, fewer YEDS10 organisms were recovered from the mesenteric lymph nodes and Peyer's patches (PP) than the parental strain at 3 or 5 days postinfection. Furthermore, bowel tissue and PP infected with YEDS10 appeared to be less inflamed than those infected with the parental strain. When extremely high doses of both the parental and YEDS10 strains were given, similar numbers of viable bacteria were recovered from the PP and mesenteric lymph nodes on day 3. However, the numbers of foci and the extent of inflammation and necrosis within them were noticeably less for YEDS10 compared to the parental strain. Together these findings suggest that Y. enterocolitica produces a phospholipase A which has a role in pathogenesis.

Indexed as

Amino Acid SequenceAnimalsBase SequenceBlotting, SouthernChromosome MappingChromosomes, BacterialDisease Models, AnimalDNA, BacterialFemaleHumansMiceMice, Inbred BALB CMolecular Sequence DataMutagenesisPhospholipases ASequence Analysis, DNADNA, BacterialPhospholipases A

Identifiers

PMID9673284
PMCPMC108459
OpenAlexW2119733211

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.