Abstract:
OBJECTIVES:The objective was to investigate how deficient of quorum sensing system (QS) affects minimal inhibitory concentrations (MICs) of Pseudomonas aeruginosa strains to ciprofloxacin (CIP) and levofloxacin (LEV) in vitro. METHODS:Collected the clinical Pseudomonas aeruginosa isolates. Screened the strains deficient of QS genes by the PCR agarose electrophoresis, and then randomly picked out normal strains with the same number of deficient ones. All strains incubated on the different CIP-concentration Mueller-Hinton agars for five days, the different concentrations of CIP respectively refered to 0.5×MIC, 1×MIC, 2×MIC and 4×MIC. Strains incubated on the first, third and fifth days were saved. MICs of saved strains to CIP and LEV were measured by the agar dilution method. Statistical analysis methods were the repeated measures analysis of variance and the rank sum test. RESULTS:The study totally collected 40 Pseudomonas aeruginosa isolates. 5 deficient strains screened were as follows: one strain lacked of rhlR and lasI genes, one strain lacked of lasI, lasR, rhlI and rhlR genes, four strains lacked of lasR gene. All the final selected strains were sensitive to both CIP and LEV. Statistical analysis results showed deficient strains became resistant more slowly and difficultly than normal strains, whether the resistance was to CIP or LEV. What's more, MICs to LEV showed the half and delayed increase than those to CIP in the vitro selection. CONCLUSIONS:Deficient of QS inhibits the resistance selection of P. aeruginosa to CIP and LEV in vitro.
journal_name
J Glob Antimicrob Resistjournal_title
Journal of global antimicrobial resistanceauthors
Gao Y,Duan J,Geng X,Zhang Z,Zhang R,Li X,Wang S,Kang J,Yin D,Song Ydoi
10.1016/j.jgar.2017.04.008subject
Has Abstractpub_date
2017-09-01 00:00:00pages
113-119eissn
2213-7165issn
2213-7173pii
S2213-7165(17)30089-9journal_volume
10pub_type
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journal_title:Journal of global antimicrobial resistance
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章,评审
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doi:10.1016/j.jgar.2020.08.007
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2017.12.007
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2015.12.004
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2016.01.011
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2020.03.011
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2020.04.031
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2015.01.006
更新日期:2015-06-01 00:00:00
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2019.03.002
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2016.09.004
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pub_type: 杂志文章
doi:10.1016/j.jgar.2019.05.031
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2019.06.021
更新日期:2019-09-01 00:00:00
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2018.04.014
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章,评审
doi:10.1016/j.jgar.2017.10.024
更新日期:2018-06-01 00:00:00
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章,评审
doi:10.1016/j.jgar.2015.02.002
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2020.07.005
更新日期:2020-09-01 00:00:00
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2016.02.003
更新日期:2016-09-01 00:00:00
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章,评审
doi:10.1016/j.jgar.2013.03.010
更新日期:2013-06-01 00:00:00
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2020.08.023
更新日期:2020-12-01 00:00:00
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2019.11.018
更新日期:2020-09-01 00:00:00
abstract:OBJECTIVE:Little is known about the treatment outcomes of HIV-negative drug-resistant tuberculosis (TB) patients in Malaysia. With respect to this issue, this study aimed to determine factors associated with unsuccessful treatment outcomes among drug-resistant TB patients at the Institute of Respiratory Medicine, Kuala...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2019.05.009
更新日期:2019-12-01 00:00:00
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2020.04.029
更新日期:2020-09-01 00:00:00
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2020.12.007
更新日期:2020-12-26 00:00:00
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2020.11.003
更新日期:2020-11-24 00:00:00
abstract::Mycobacterium tuberculosis is naturally resistant to clarithromycin (CLR). The genes Rv3197A (whiB7) and Rv1988 (ermMT) have been shown to be involved in the resistant phenotype. In this study, a CLR-susceptible M. tuberculosis clinical strain was identified, designated as DS3214, and the nucleotide sequences and expr...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2015.07.004
更新日期:2015-12-01 00:00:00
abstract:OBJECTIVES:Marine bivalves can act as bioindicators of marine environment pollution by multidrug-resistant (MDR) enteric bacteria of medical interest. The aim of this study was to report the draft genome sequence of a plasmid-encoded AmpC (pAmpC) (CMY-2)-carrying Escherichia coli isolate recovered from a marine bivalve...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2018.06.010
更新日期:2018-09-01 00:00:00