Abstract:
:The multiple antibiotic resistance (mar) locus in Escherichia coli consists of two divergently expressed operons (marC and marRAB), both of which contribute to the Mar phenotype. Overexpression of the marRAB operon protected E. coli against rapid cell killing by fluoroquinolones. Inactivation of the operon in mar mutants restored a wild-type bactericidal susceptibility. Both operons of the locus were required for protection from the quinolone-mediated bactericidal activity in mar locus deletion mutants. The effect was lost at high concentrations of fluoroquinolones, unlike the case for the previously described genes hipA and hipQ. The inducible mar locus appears to specify a novel antibactericidal mechanism which may play a role in the emergence of fluoroquinolone-resistant clinical E. coli isolates.
journal_name
Antimicrob Agents Chemotherjournal_title
Antimicrobial agents and chemotherapyauthors
Goldman JD,White DG,Levy SBdoi
10.1128/AAC.40.5.1266subject
Has Abstractpub_date
1996-05-01 00:00:00pages
1266-9issue
5eissn
0066-4804issn
1098-6596journal_volume
40pub_type
杂志文章abstract::The activities of ampicillin, meropenem, azithromycin, gentamicin, ciprofloxacin, and moxifloxacin against intracellular hemolysin-positive Listeria monocytogenes were measured in human THP-1 macrophages and were compared with the extracellular activities observed in broth. All extracellular concentrations were adjust...
journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/aac.46.7.2095-2103.2002
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journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.01766-16
更新日期:2016-12-27 00:00:00
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pub_type: 杂志文章
doi:10.1128/aac.4.3.201
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journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1128/aac.37.5.1177
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pub_type: 杂志文章
doi:10.1128/aac.32.12.1891
更新日期:1988-12-01 00:00:00
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journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/aac.30.2.295
更新日期:1986-08-01 00:00:00
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journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.42.11.3000
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journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
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更新日期:2003-12-01 00:00:00
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journal_title:Antimicrobial agents and chemotherapy
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doi:10.1128/AAC.49.8.3578-3582.2005
更新日期:2005-08-01 00:00:00
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pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1128/aac.35.6.1089
更新日期:1991-06-01 00:00:00
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journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/aac.32.3.308
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pub_type: 杂志文章
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journal_title:Antimicrobial agents and chemotherapy
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journal_title:Antimicrobial agents and chemotherapy
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journal_title:Antimicrobial agents and chemotherapy
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journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
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journal_title:Antimicrobial agents and chemotherapy
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/aac.46.9.2933-2942.2002
更新日期:2002-09-01 00:00:00
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journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.00923-07
更新日期:2008-03-01 00:00:00
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journal_title:Antimicrobial agents and chemotherapy
pub_type: 杂志文章
doi:10.1128/AAC.06299-11
更新日期:2012-05-01 00:00:00