Evidence map›Paper›PMID 18556799›Full record

ArticleJournal of bacteriology2008

Replacement of adenylate cyclase toxin in a lineage of Bordetella bronchiseptica.

Anne M Buboltz, Tracy L Nicholson, Mylisa R Parette, Sara E Hester, Julian Parkhill, Eric T Harvill

Abstract read
In one paragraph

Article in Journal of bacteriology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing 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

24 citing papers in PubMed.

  1. Genetic diversity ofFrontiers in microbiology · 2025
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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

6 authors.

Anne M BuboltzDepartment of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
Tracy L Nicholson
Mylisa R Parette
Sara E Hester
Julian Parkhill
Eric T Harvill

Funding

Evolution of the Bordetellae from Commensals to PathogensR01GM083113 · NIGMS · PENNSYLVANIA STATE UNIVERSITY, THE · PI HARVILL, ERIC T · 2008 to 2011
$2.1M
Comparative Immunobiology of the bordetellaeR01AI053075 · NIAID · PENNSYLVANIA STATE UNIVERSITY-UNIV PARK · PI HARVILL, ERIC T. · 2003 to 2007
$1.4M
EMERGENCE OF HUMAN PATHOGENS IN THE GENUS BORDETELLAR56AI065507 · NIAID · PENNSYLVANIA STATE UNIVERSITY, THE · PI HARVILL, ERIC T. · 2007 to 2007
$363k
NIAID NIH HHS AI 053075NIAID NIH HHS AI 065507NIAID NIH HHS R01 AI053075NIAID NIH HHS R56 AI065507NIGMS NIH HHS GM083113NIGMS NIH HHS R01 GM083113
6 · The paper itself

Abstract

Bordetella bronchiseptica is a gram-negative respiratory pathogen that infects a wide range of hosts and causes a diverse spectrum of disease. This diversity is likely affected by multiple factors, such as host immune status, polymicrobial infection, and strain diversity. In a murine model of infection, we found that the virulence of B. bronchiseptica strains, as measured by the mean lethal dose, varied widely. Strain 253 was less virulent than the typically studied strain, RB50. Transcriptome analysis showed that cyaA, the gene encoding adenylate cyclase toxin (CyaA), was the most downregulated transcript identified in strain 253 compared to that in strain RB50. Comparative genomic hybridization and genome sequencing of strain 253 revealed that the cya locus, which encodes, activates, and secretes CyaA, was replaced by an operon (ptp) predicted to encode peptide transport proteins. Other B. bronchiseptica strains from the same phylogenetic lineage as that of strain 253 also lacked the cya locus, contained the ptp genes, and were less virulent than strain RB50. Although the loss of CyaA would be expected to be counterselected since it is conserved among the classical bordetellae and believed to be important to their success, our data indicate that the loss of this toxin and the gain of the ptp genes occurred in an ancestral strain that then expanded into a lineage. This suggests that there may be ecological niches in which CyaA is not critical for the success of B. bronchiseptica.

Indexed as

Adenylate Cyclase ToxinAnimalsBordetella bronchisepticaBordetella InfectionsDNA, BacterialEvolution, MolecularGene Expression ProfilingMembrane Transport ProteinsMiceMice, Inbred C57BLMolecular Sequence DataNucleic Acid HybridizationOligonucleotide Array Sequence AnalysisOperonSequence Analysis, DNASurvival AnalysisAdenylate Cyclase ToxinDNA, BacterialMembrane Transport Proteinspeptide permease

Identifiers

PMID18556799
PMCPMC2493278

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.