Evidence map›Paper›PMID 16940144›Full record

ArticleInfection and immunity2006

Characterization of host cell death induced by Chlamydia trachomatis.

Songmin Ying, Silke F Fischer, Matthew Pettengill, Debye Conte, Stefan A Paschen, David M Ojcius, Georg Häcker

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

22 citing papers in PubMed, 39 citations in OpenAlex.

  1. Review
  2. Microbiology spectrum · 2022
    Article
  3. Bacteria-Cancer Interface: Awaiting the Perfect Storm.Pathogens (Basel, Switzerland) · 2021
    Review
  4. Review
  5. Infection and immunity · 2020
    Article
  6. Modulation of Host Cell Death and Lysis Are Required for the Release ofFrontiers in cellular and infection microbiology · 2020
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Chlamydial intracellular survival strategies.Cold Spring Harbor perspectives in medicine · 2013
    Review
  15. Article
  16. Article
  17. Article
  18. Review
  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

7 authors at 2 institutions in 2 countries.

Songmin YingInstitute for Medical Microbiology, Immunology and Hygiene, Technical University Munich, Germany.
Silke F Fischer
Matthew Pettengill
Debye Conte
Stefan A Paschen
David M Ojcius
Georg Häcker
Institute of Medical Microbiology and Hygiene · DEUniversity of California, Merced · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chlamydia are obligate intracellular bacteria that modulate apoptosis of the host cell. Strikingly, chlamydial infection has been reported both to inhibit and to induce apoptosis. Although the ability to inhibit apoptosis has been corroborated by the identification of cellular targets, confirmation of cell death induction has been complicated by a mixture of apoptotic features and atypical cell death during infection, as well as by differences in the experimental techniques used to measure cell death. Here we use a panel of well-established approaches in the study of apoptosis to define the form of cell death induced by Chlamydia trachomatis infection. Infected cells displayed apoptotic features such as nuclear condensation and fragmentation, as well as positive TUNEL (terminal deoxynucleotidyltransferase-mediated dUTP-biotin nick end labeling) staining. Fragmentation of genomic DNA occurred, but was atypical. Clear evidence against the activation of effector caspases was found. Nuclear changes were measured in fibroblasts lacking one or both of the effectors of mitochondrial apoptosis, Bax and Bak. A slight reduction in nuclear changes was observed in Bax-deficient cells and in Bax/Bak double-deficient cells. Most surprisingly, this reduction was almost complete in Bak-deficient cells. Finally, dying infected cells were efficiently taken up by professional phagocytes, suggesting that Chlamydia-induced host-cell death could play a role in the immune response. In conclusion, chlamydial infection can induce cell death. Although Chlamydia-induced cell death has certain morphological features of apoptosis, it does not result from activation of the apoptotic pathway.

Indexed as

AnimalsApoptosisbcl-2-Associated X Proteinbcl-2 Homologous Antagonist-Killer ProteinCell LineCell Line, TumorCell NucleusChlamydia trachomatisFibroblastsHeLa CellsHumansMiceUltraviolet Raysbcl-2-Associated X Proteinbcl-2 Homologous Antagonist-Killer Protein

Identifiers

PMID16940144
PMCPMC1695498
OpenAlexW2090719315

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.