Evidence map›Paper›PMID 24361397›Full record

ArticleMutation research2014

High incidence of multiple antibiotic resistant cells in cultures of in enterohemorrhagic Escherichia coli O157:H7.

Benjamin R Carone, Tao Xu, Kenan C Murphy, Martin G Marinus

Open access · greenAbstract read
In one paragraph

Article in Mutation research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.6field-weighted citation impact, top 39% 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

8 citing papers in PubMed, 15 citations in OpenAlex.

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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.

Benjamin R CaroneBiochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, United States.
Tao XuBiochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, United States.
Kenan C MurphyMicrobiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA 01605, United States.
Martin G MarinusBiochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, United States. Electronic address: martin.marinus@umassmed.edu.
University of Massachusetts Chan Medical School · US

Funding

DNA Mismatch and Double-Strand Break RepairR01GM063790 · NIGMS · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI MARINUS, MARTIN G. · 2002 to 2010
$2.6M
CELL AND MOLECULAR BIOLOGY OF REPRODUCTIONT32HD007439 · NICHD · WORCESTER FOUNDATION FOR BIOMEDICAL RES · PI WITMAN, GEORGE B · 1993 to 2015
$1.3M
NICHD NIH HHS T32 HD007439NIGMS NIH HHS R01 GM063790
6 · The paper itself

Abstract

The spontaneous incidence of chloramphenicol (Cam) resistant mutant bacteria is at least ten-fold higher in cultures of enterohemorrhagic Escherichia coli O157:H7 strain EDL933 than in E. coli K-12. It is at least 100-fold higher in the dam (DNA adenine methyltransferase) derivative of EDL933, compared to the dam strain of E. coli K-12, thereby preventing the use of Cam resistance as a marker in gene replacement technology. Genome sequencing of Cam-resistant isolates of EDL933 and its dam derivatives showed that the marR (multiple antibiotic resistance) gene was mutated in every case but not in the Cam-sensitive parental strains. As expected from mutation in the marR gene, the Cam-resistant bacteria were also found to be resistant to tetracycline and nalidixic acid. The marR gene in strain EDL933 is annotated as a shorter open reading frame than that in E. coli K-12 but the longer marR(+) open reading frame was more efficient at complementing the marR antibiotic-resistance phenotype of strain EDL933. Beta-lactamase-tolerant derivatives were present at frequencies 10-100 times greater in cultures of marR derivatives of strain EDL933 than the parent strain. Spontaneous mutation frequency to rifampicin, spectinomycin and streptomycin resistance was the same in E. coli O157:H7 and E. coli K-12 strains.

Indexed as

Drug Resistance, Multiple, BacterialCarbenicillinChloramphenicolEscherichia coli O157Escherichia coli ProteinsGenetic Complementation TestMicrobial Sensitivity TestsMutationRepressor ProteinsCarbenicillinChloramphenicolEscherichia coli ProteinsMarR protein, E coliRepressor ProteinsDNAEscherichia coli O157GenesMultiple antibiotic resistanceMutationRepressor protein

Identifiers

PMID24361397
PMCPMC3913999
OpenAlexW2122938989

What OpenQuestion holds

Textmetadata
LicenceTDM
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.