Evidence map›Paper›PMID 15980362›Full record

ArticleAntimicrobial agents and chemotherapy2005

Frequency of spontaneous mutations that confer antibiotic resistance in Chlamydia spp.

Rachel Binet, Anthony T Maurelli

Abstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing 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

29 citing papers in PubMed.

  1. Article
  2. Review
  3. Review
  4. Spectinomycin resistance inFrontiers in microbiology · 2022
    Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Virulence determinants in the obligate intracellular pathogen Chlamydia trachomatis revealed by forward genetic approaches.Proceedings of the National Academy of Sciences of the United States of America · 2012
    Article
  17. Article
  18. Antibiotic resistance in Chlamydiae.Future microbiology · 2010
    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

2 authors.

Rachel BinetDepartment of Microbiology and Immunology, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814-4799,USA.
Anthony T Maurelli

Funding

MOLECULAR GENETIC ANALYSIS OF CHLAMYDIA PATHOGENICITYR01AI044033 · NIAID · UNIVERSITY OF FLORIDA · PI MAURELLI, ANTHONY T · 1999 to 2016
$3.9M
Molecular Genetic Analysis of Chlamydia PathogenicityR56AI044033 · NIAID · HENRY M. JACKSON FDN FOR THE ADV MIL/MED · PI MAURELLI, ANTHONY T · 2012 to 2012
$363k
Molecular Genetic Analysis of Chlamydia PathogenicityR21AI044033 · NIAID · HENRY M. JACKSON FDN FOR THE ADV MIL/MED · PI MAURELLI, ANTHONY T · 2004 to 2004
$301k
NIAID NIH HHS AI44033NIAID NIH HHS R01 AI044033NIAID NIH HHS R21 AI044033NIAID NIH HHS R56 AI044033
6 · The paper itself

Abstract

Mutations in rRNA genes (rrn) that confer resistance to ribosomal inhibitors are typically recessive or weakly codominant and have been mostly reported for clinical strains of pathogens possessing only one or two rrn operons, such as Helicobacter pylori and Mycobacterium spp. An analysis of the genome sequences of several members of the Chlamydiaceae revealed that these obligate intracellular bacteria harbor only one or two sets of rRNA genes. To study the contribution of rRNA mutations to the emergence of drug resistance in the Chlamydiaceae, we used the sensitivities of Chlamydia trachomatis L2 (two rrn operons) and Chlamydophila psittaci 6BC (one rrn operon) to the aminoglycoside spectinomycin as a model. Confluent cell monolayers were infected in a plaque assay with about 10(8) wild-type infectious particles and then treated with the antibiotic. After a 2-week incubation time, plaques formed by spontaneous spectinomycin-resistant (Spc(r)) mutants appeared with a frequency of 5 x 10(-5) for C. psittaci 6BC. No Spc(r) mutants were isolated for C. trachomatis L2, although the frequencies of rifampin resistance were in the same range for both strains (i.e., 10(-7)). The risk of emergence of Chlamydia strains resistant to tetracyclines and macrolides, the ribosomal drugs currently used to treat chlamydial infections, is discussed.

Indexed as

MutationAnimalsAnti-Bacterial AgentsCells, CulturedChlamydia trachomatisChlamydophila psittaciDNA-Directed RNA PolymerasesDrug Resistance, BacterialHumansMiceMicrobial Sensitivity TestsMolecular Sequence DataRifampinRNA, Ribosomal, 16SSequence Analysis, DNASpectinomycinAnti-Bacterial AgentsDNA-Directed RNA PolymerasesRifampinRNA polymerase beta subunitRNA, Ribosomal, 16SSpectinomycin

Identifiers

PMID15980362
PMCPMC1168699

What OpenQuestion holds

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Registered trials

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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.