Abstract:
:Acinetobacter baumannii coccobacilli are dangerous to patients in intensive care units because of their multidrug resistance to antibiotics, developed mainly in the past decade. This study aimed to examine whether there is a significant correlation between the number of Pro-Ala repeats in the CAP01997 protein, the EmrA homologue of A. baumannii, and resistance to antibiotics. A total of 79 multidrug-resistant A. baumannii strains isolated from patients were analysed. Resistance to antibiotics was determined on Mueller-Hinton agar plates using the Kirby-Bauer disk diffusion method. The number of CCTGCA repeats encoding Pro-Ala repeats in CAP01997 was determined by PCR and capillary electrophoresis. The 3D models of CAP01997 containing Pro-Ala repeats were initially generated using RaptorX Structure Prediction server and were assembled with EasyModeller 4.0. The models were embedded in a model bacterial membrane based on structural information from homologous proteins and were refined using 100-ns molecular dynamics simulations. The results of this research show significant correlation between susceptibility to netilmicin, tobramycin and imipenem and the number of repeated Pro-Ala sequences in the CAP01997 protein, a homologue of the Escherichia coli transporter EmrA. Predicted structures suggest potential mechanisms that confer drug resistance by reshaping the cytoplasmic interface between CAP01997 protein and the critical component of the multidrug efflux pump homologous to EmrB. Based on these results, we can conclude that the CAP01997 protein, an EmrA homologue of A. baumannii, confers resistance to netilmicin, tobramycin and imipenem, depending on the number of Pro-Ala repeats.
journal_name
J Glob Antimicrob Resistjournal_title
Journal of global antimicrobial resistanceauthors
Nowak-Zaleska A,Wieczór M,Czub J,Nierzwicki Ł,Kotłowski R,Mikucka A,Gospodarek Edoi
10.1016/j.jgar.2016.09.004subject
Has Abstractpub_date
2016-12-01 00:00:00pages
145-149eissn
2213-7165issn
2213-7173pii
S2213-7165(16)30109-6journal_volume
7pub_type
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journal_title:Journal of global antimicrobial resistance
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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
doi:10.1016/j.jgar.2019.03.002
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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
doi:10.1016/j.jgar.2015.07.004
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2014.08.003
更新日期:2014-12-01 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.2020.04.010
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abstract:OBJECTIVES:Acinetobacter baumannii (A. baumannii) is the world's most significant opportunistic pathogen that causes nosocomial infections; there is widespread health concern due to its ability to acquire multidrug resistance. This study reports a new variety of A. baumannii L13 isolated from Tarim River in Xinjiang Uy...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2019.05.022
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.2016.03.001
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
doi:10.1016/j.jgar.2020.09.027
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.2019.06.019
更新日期:2020-03-01 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.2020.07.005
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.2018.11.008
更新日期:2019-03-01 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.2020.01.016
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.2020.03.011
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,评审
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更新日期:2014-03-01 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.2016.12.015
更新日期:2017-06-01 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.2019.01.006
更新日期:2019-06-01 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.2019.05.029
更新日期:2019-09-01 00:00:00
abstract::This study identified a novel integrative and conjugative element (ICESsD9) carrying erm(B) and tet(O) resistance determinants in Streptococcus suis D9 and determined its prevalence in clinical isolates. Comparative genome analysis was performed using Mauve and Artemis Comparison Tool visualisation programs. Inverse P...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2016.05.008
更新日期:2016-12-01 00:00:00
abstract::Environmental fungicides are used in agriculture to reduce fungal spoilage of crops to a minimum, and the polyene macrolide natamycin is used as a food preservative. The use of natamycin in yoghurt has recently been authorised in the USA and some other countries. However, resistance development is a serious risk assoc...
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
abstract:OBJECTIVES:Multidrug-resistant bacteria have become a serious threat worldwide. In particular, the coexistence of carbapenemase genes and mcr-1 leaves few available treatment options. Here we report a multidrug-resistant Escherichia coli isolate harbouring both mcr-1 and blaNDM-9 from a patient with a urinary tract inf...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2018.10.003
更新日期:2019-03-01 00:00:00
abstract:OBJECTIVES:Flies have been implicated in the dispersal of medically important bacteria including members of the genus Klebsiella between different environmental compartments. The aim of this study was to retrieve and characterize antibiotic-resistant bacteria from flies collected near to hospitals. METHODS:Flies were ...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2020.11.021
更新日期:2020-12-07 00:00:00
abstract::Hospitals in Hong Kong, like many hospitals in the world, are constantly challenged by the increasing rate of non-susceptible and multidrug-resistant organisms (MDROs). Accurate and timely surveillance is essential for effective control. The Hospital Authority of Hong Kong has developed a comprehensive antimicrobial s...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章,评审
doi:10.1016/j.jgar.2014.05.008
更新日期:2014-12-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to evaluate the role of residue 238 in CTX-M-15 and CTX-M-15G238C mutant with respect to carbapenems and various β-lactamase inhibitors. METHODS:A CTX-M-15G238C laboratory mutant was generated by site-directed mutagenesis from CTX-M-15 enzyme by replacing glycine 238 with cysteine....
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2017.04.004
更新日期:2017-09-01 00:00:00
abstract:OBJECTIVES:Ralstonia pickettii has been increasingly recognised as an emerging opportunistic pathogen in hospital settings in recent years, especially in patients with prolonged hospital stay. Clinical manifestations associated with R. pickettii infection range from mild infections to severe invasive life-threatening i...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2020.02.020
更新日期:2020-06-01 00:00:00
abstract:OBJECTIVES:Bacillus spp., which have relevance to pseudo-epidemics in clinics, may cause serious infections as well as high morbidity and mortality in hospitalised patients with haematological malignancies. Here we report the isolation of Bacillus sp. M13(2017) with a multidrug-resistant phenotype and spore-producing s...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2018.07.002
更新日期:2018-09-01 00:00:00