Evidence map›Paper›PMID 18325260›Full record

ArticleEmerging infectious diseases2008

Discovering and differentiating new and emerging clonal populations of Chlamydia trachomatis with a novel shotgun cell culture harvest assay.

Naraporn Somboonna, Sally Mead, Jessica Liu, Deborah Dean

Open access · diamondAbstract read
In one paragraph

Article in Emerging infectious diseases, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.6field-weighted citation impact, top 20% 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

18 citing papers in PubMed, 31 citations in OpenAlex.

  1. Whole-genome automated assembly pipeline forNAR genomics and bioinformatics · 2025
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  3. Patterns of within-host spread ofbioRxiv : the preprint server for biology · 2023
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  4. Patterns of within-host spread ofFrontiers in microbiology · 2023
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  5. Article
  6. Prevalence ofInternational journal of environmental research and public health · 2019
    Article
  7. Article
  8. Article
  9. Article
  10. Frontiers in microbiology · 2017
    Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
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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 at 1 institution in 1 country.

Naraporn SomboonnaChildren's Hospital, Oakland Research Institute, Oakland, California, USA.
Sally Mead
Jessica Liu
Deborah Dean
University of California, Berkeley · US

Funding

C. trachomatis genomics, strain typing, and evolutionR01AI059647 · NIAID · CHILDREN'S HOSPITAL &RES CTR AT OAKLAND · PI DEAN, DEBORAH ANNE · 2004 to 2008
$2.8M
PATHOGENESIS OF CHLAMYDIAL OCULAR INFECTIONSR01EY012219 · NEI · CHILDREN'S HOSPITAL &RES CTR AT OAKLAND · PI DEAN, DEBORAH ANNE · 2000 to 2004
$1.6M
Pathogenesis of Persistent Chlamydial STDsR01AI039499 · NIAID · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI DEAN, DEBORAH ANNE · 1997 to 2007
$1.3M
NEI NIH HHS R01 EY012219NIAID NIH HHS R01 AI039499NIAID NIH HHS R01 AI059647NIAID NIH HHS R01 AI39499NIAID NIH HHS R01 EY/AI12219
6 · The paper itself

Abstract

Chlamydia trachomatis is the leading cause of preventable blindness and bacterial sexually transmitted diseases worldwide. Plaque assays have been used to clonally segregate laboratory-adapted C. trachomatis strains from mixed infections, but no assays have been reported to segregate clones from recent clinical samples. We developed a novel shotgun cell culture harvest assay for this purpose because we found that recent clinical samples do not form plaques. Clones were strain-typed by using outer membrane protein A and 16S rRNA sequences. Surprisingly, ocular trachoma reference strain A/SA-1 contained clones of Chlamydophila abortus. C. abortus primarily infects ruminants and pigs and has never been identified in populations where trachoma is endemic. Three clonal variants of reference strain Ba/Apache-2 were also identified. Our findings reflect the importance of clonal isolation in identifying constituents of mixed infections containing new or emerging strains and of viable clones for research to more fully understand the dynamics of in vivo strain-mixing, evolution, and disease pathogenesis.

Indexed as

Bacterial Outer Membrane ProteinsBacteriological TechniquesChlamydia InfectionsChlamydia trachomatisChlamydophilaGenes, BacterialGenetic VariationRNA, BacterialRNA, Ribosomal, 16SBacterial Outer Membrane ProteinsOMPA outer membrane proteinsRNA, BacterialRNA, Ribosomal, 16S

Identifiers

PMID18325260
PMCPMC2570839
OpenAlexW2023679112

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.