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Relationship between Antibiotic Susceptibility and Genotype in Mycobacterium abscessus Clinical Isolates

Overview of attention for article published in Frontiers in Microbiology, September 2017
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Title
Relationship between Antibiotic Susceptibility and Genotype in Mycobacterium abscessus Clinical Isolates
Published in
Frontiers in Microbiology, September 2017
DOI 10.3389/fmicb.2017.01739
Pubmed ID
Authors

Bing Li, Shiyi Yang, Haiqing Chu, Zhemin Zhang, Weijia Liu, Liulin Luo, Wei Ma, Xiaogang Xu

Abstract

This study aimed to determine the antibiotic susceptibility and resistance related genotypes of Mycobacterium abscessus. One hundred sixty-two clinical isolates were collected. Genomic data were obtained by whole genome sequencing. Single nucleotide polymorphism (SNP) analysis was conducted using the NCBI GenBank database and BLAST algorithm. The following genes were of interest: erm(41), rrl and rrs. Erm(41) was further divided into 3 sequevars: erm(41)C28, erm(41)T28, and M type [erm(41) with deletions in nucleotides 64 and 65, or 159 through 432]. Antibiotic susceptibility was assessed at 3 days (early reading time, ERT) and 14 days (late reading time, LRT) after clarithromycin (CLA) treatment. Three patterns of CLA resistance were observed. (1) Fifty-five (acquired resistance) isolates [45 erm(41)T28, 1 erm(41)C28 and 9 M type] exhibited MIC ≥8 mg/L at ERT; among these isolates, 10 had an rrl 2058/2059 mutation. (2) Sixty-two subsp. abscessus and 2 subsp. massiliense (induced resistance) isolates exhibited MIC ≤4 mg/L at ERT, but ≥8 mg/L at LRT. (3) Forty-three (sensitive and intermediate) isolates [14 erm(41)C28, 1 erm(41)T28, and 28 M type] exhibited MIC ≤4 mg/L at both ERT and LRT. No rrs 1408 mutation or other meaningful SNP was found in 3 amikacin-resistant isolates. No correlation was found between rrl, erm(41) or rrs and susceptibility to the 8 other antibiotics tested. The rrl and erm(41) genotypes could predict the CLA resistance of M. abscessus clinical isolates. China has a large number of CLA-resistant M. abscessus isolates with erm(41)T28 sequevar. Treatment of M. abscessus infections should be based upon a comprehensive consideration of factors that include genotype and geographic location.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 34 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 34 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 7 21%
Other 5 15%
Student > Bachelor 3 9%
Student > Postgraduate 3 9%
Student > Ph. D. Student 2 6%
Other 4 12%
Unknown 10 29%
Readers by discipline Count As %
Medicine and Dentistry 10 29%
Immunology and Microbiology 5 15%
Biochemistry, Genetics and Molecular Biology 3 9%
Agricultural and Biological Sciences 3 9%
Pharmacology, Toxicology and Pharmaceutical Science 2 6%
Other 2 6%
Unknown 9 26%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 20 November 2017.
All research outputs
#15,223,899
of 25,845,895 outputs
Outputs from Frontiers in Microbiology
#11,245
of 29,888 outputs
Outputs of similar age
#165,357
of 324,706 outputs
Outputs of similar age from Frontiers in Microbiology
#281
of 513 outputs
Altmetric has tracked 25,845,895 research outputs across all sources so far. This one is in the 40th percentile – i.e., 40% of other outputs scored the same or lower than it.
So far Altmetric has tracked 29,888 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 6.4. This one has gotten more attention than average, scoring higher than 60% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 324,706 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 48th percentile – i.e., 48% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 513 others from the same source and published within six weeks on either side of this one. This one is in the 43rd percentile – i.e., 43% of its contemporaries scored the same or lower than it.