Evidence map›Paper›PMID 9097437›Full record

ArticleApplied and environmental microbiology1997

Infection of Acanthamoeba castellanii by Chlamydia pneumoniae.

A Essig, M Heinemann, U Simnacher, R Marre

Abstract read
In one paragraph

Article in Applied and environmental microbiology, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing 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

38 citing papers in PubMed.

  1. Review
  2. Article
  3. Temperature Affects the Host Range of Rhabdochlamydia porcellionis.Applied and environmental microbiology · 2023
    Article
  4. Microbial warfare in the wild-the impact of protists on the evolution and virulence of bacterial pathogens.International microbiology : the official journal of the Spanish Society for Microbiology · 2021
    Review
  5. Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. Review
  11. Review
  12. Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Review
  18. Interaction of Pasteurella multocida with free-living amoebae.Applied and environmental microbiology · 2005
    Article
  19. Chlamydophila pneumoniae antibodies in office workers with and without inflammatory rheumatic diseases in a moisture-damaged building.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2005
    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

4 authors.

A EssigDepartment of Medical Microbiology and Hygiene, University of Ulm, Germany.
M Heinemann
U Simnacher
R Marre

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chlamydia pneumoniae is an intracellular respiratory pathogen, which, similar to Legionella, might have developed mechanisms to escape the intracellular bactericidal activity of both human host cells and amoeba. We therefore investigated the intracellular growth and survival of C. pneumoniae in Acanthamoeba castellanii by using cell culture, immunofluorescence microscopy, and electron microscopy. A castellanii was incubated with purified elementary bodies of C. pneumoniae TW 183 at a concentration of 10(6) inclusion-forming units (IFU)/ml to give a ratio of approximately 1 IFU of C. pneumoniae per amoeba. Quantitative determination of chlamydial growth within A. castellanii revealed viable and infective C. pneumoniae in the range of 10(4) to 10(5) IFU/ml between days 7 and 14 postinfection. Immunofluorescence analysis and transmission electron microscopy with subsequent immunogold staining confirmed evidence of infection of the amoebae by C. Pneumoniae and additionally revealed that C. pneumoniae entered the typical growth cycle. Our results show that amoebae allow the survival of C. pneumoniae, suggesting that amoebae may serve as an additional reservoir for Chlamydia or Chlamydia-related organisms.

Indexed as

AcanthamoebaAnimalsChlamydia InfectionsChlamydophila pneumoniaeHumansMicroscopy, Electron

Identifiers

PMID9097437
PMCPMC168434

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.