Abstract：
OBJECTIVES:To identify and characterize oxazolidinone resistance genes cfr and optrA in enterococcal isolates. METHODS:Two hundred and ninety-three enterococcal isolates were screened for the presence of cfr and optrA by polymerase chain reaction. The transferability of cfr and optrA was examined by conjugation. S1 nuclease pulsed-field gel electrophoresis and Southern blotting were used to identify the location of cfr and optrA. One Enterococcus faecalis isolate carrying both cfr and optrA was sequenced in full. RESULTS:cfr and optrA were detected in 16 (5.5%) and 170 (58.0%) enterococcal isolates, respectively. Sixteen enterococcal isolates (E. faecalis n=13, Enterococcus avium n=2, Enterococcus mundtii n=1) carried both cfr and optrA. The cfr-carrying fragment between res and theta in plasmid p4 showed 98.9% identity to the corresponding region of plasmid pEF120805 from vancomycin-resistant Enterococcus faecium. The optrA-carrying segment between tnpB and optrA in plasmid p1 showed >99.9% identity to the corresponding region of genomic DNA from E. faecalis A101. Plasmid p4 and plasmid p1 were simultaneously conjugated to E. faecalis JH2-2. CONCLUSIONS:One hundred and seventy optrA-positive enterococci were identified in 293 enterococcal isolates from swine and the farm environment. The co-existence of cfr and optrA in E. avium and E. mundtii has been identified previously. cfr and optrA were identified on two new conjugative plasmids from one E. faecalis isolate. The optrA-carrying segment (IS1216E-optrA-IS1216E) was reported initially. Among different types of enterococcal plasmids, ISEnfa5 and IS1216E elements may play a vital role in the dissemination of cfr and optrA, respectively.
journal_name
Int J Antimicrob Agentsjournal_title
International journal of antimicrobial agentsauthors
Chen L,Han D,Tang Z,Hao J,Xiong W,Zeng Zdoi
10.1016/j.ijantimicag.2020.105993subject
Has Abstractpub_date
2020-07-01 00:00:00pages
105993issue
1eissn
0924-8579issn
1872-7913pii
S0924-8579(20)30151-5journal_volume
56pub_type
杂志文章abstract：:The in vitro susceptibilities of 192 consecutive clinical strains of Pasteurella spp. isolated between 1996 and 2003 from soft tissue pus (n = 146), respiratory tract specimens (n = 38) and blood (n = 8) were studied by an agar dilution method. All isolates were susceptible to minocycline, cefotaxime, ofloxacin, cipro...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2006.02.004
更新日期：2006-04-01 00:00:00
abstract：:A total of 89 patients, (>18 years), with symptoms of chronic prostatitis and inflammatory findings as well as the presence of Chlamydia trachomatis confirmed by DNA/RNA DIGENE hybridization method and/or by isolation, McCoy culture and Lugol stain in expressed prostatic secretion or in voided bladder urine collected ...
journal_title：International journal of antimicrobial agents
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/s0924-8579(03)00056-6
更新日期：2003-05-01 00:00:00
abstract：:The in vitro activity of a new fluoroquinolone, trovafloxacin (CP-99,219) was compared with that of ten other agents against 100 clinical isolates in the Bacteroides fragilis group. Trovafloxacin was the most active quinolone (MIC(90), 1 microg/ml) followed by sparfloxacin (MIC(90), 8 microg/ml), levofloxacin (MIC(90)...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/s0924-8579(97)00014-9
更新日期：1997-05-01 00:00:00
abstract：:Three pharmacokinetic/pharmacodynamic parameters--(i) the peak concentration to the minimum inhibitory concentration ratio (C(max)/MIC); (ii) the area under the concentration-time curve to MIC ratio (AUC(24h)/MIC); and (iii) the time the concentration exceeds the MIC (T>MIC)--are important predictors of the clinical e...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章,评审
doi：10.1016/s0924-8579(01)00406-x
更新日期：2001-01-01 00:00:00
abstract：:As a result of macrolide resistance rates of 25% for pneumococci in the US, the clinical use of this class as empirical therapy has been questioned. However, macrolides continue to be used with clinical success. Using an immunocompromised murine pneumonia model, this study evaluated in vivo efficacy of human simulated...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2003.09.028
更新日期：2004-05-01 00:00:00
abstract：BACKGROUND:Tuberculosis (TB) causes 25% of all deaths among individuals infected with human immunodeficiency virus (HIV). Rifampicin (RIF) is a potent inducer of drug metabolizing enzymes and drug transporters, and co-administration with dolutegravir (DTG) reduces DTG exposure; this can be overcome by doubling the DTG ...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2019.04.009
更新日期：2019-08-01 00:00:00
abstract：:Clinafloxacin, levofloxacin, sparfloxacin and trovafloxacin were tested by Etest against 188 Streptococcus pneumoniae isolates. Clinafloxacin and trovafloxacin were 2-4-fold more potent than sparfloxacin and 8-fold more than levofloxacin. Two isolates, both serotype 6, with high-level quinolone resistance (> or = 8 mi...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/s0924-8579(97)00053-8
更新日期：1998-02-01 00:00:00
abstract：:Polymyxins are increasingly used as a last resort for the treatment of infections caused by multidrug-resistant Gram-negative bacteria in patients. Over the last decade, significant progress has been made in understanding the pharmacokinetics/pharmacodynamics/toxicodynamics (PK/PD/TD) of parenteral and inhaled polymyx...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2020.106199
更新日期：2020-12-01 00:00:00
abstract：:As shown in a previous study, the outcome of multidrug-resistant tuberculosis (MDR-TB) in France is not satisfactory (41% success rate). To improve the management and outcome of patients with MDR-TB, a prospective intervention study was carried out in 1998-1999 by National Reference Centre (NRC) staff. NRC staff conta...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2006.11.023
更新日期：2007-04-01 00:00:00
abstract：:It has been previously demonstrated that some antimicrobial agents enhance activities of human polymorphonuclear neutrophils (PMNs). The effect on the release of cytokines in an inflammatory context from PMNs by these antibiotics was evaluated. We studied the effect of the release of some cytokines by human PMNs RT-PC...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2003.07.006
更新日期：2004-02-01 00:00:00
abstract：:Mechanisms and transferability of beta-lactam resistance in 50 ceftazidime resistant strains of Enterobacteriaceae was studied. These strains were selected from 1991 E. coli, 1035 Enterobacter spp., 168 Citrobacter spp. and 1371 Klebsiella spp., isolated from patients hospitalized in ICUs and in the pediatric and urol...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/s0924-8579(98)00027-2
更新日期：1998-05-01 00:00:00
abstract：:In order to assess how outpatient parenteral antibiotic therapy (OPAT) is managed in different countries, we analyzed the data collected in the USA, UK and Italy by the International OPAT Registry using an ad hoc Access/Excel Microsoft program. The analysis of data concerned 9826 patients in the USA, 981 in the UK and...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2004.06.004
更新日期：2004-11-01 00:00:00
abstract：:Vancomycin is a glycopeptide antibiotic widely used in the management of meticillin-resistant Staphylococcus aureus (MRSA). Guidelines currently recommend vancomycin be administered by intermittent infusion, despite recent research suggesting that continuous infusion (CI) may be associated with lower rates of vancomyc...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.ijantimicag.2015.04.013
更新日期：2015-09-01 00:00:00
abstract：:Cross-protection by anti-lipid A antibodies may be mediated by contribution to host defence mechanisms such as enhancement of bactericidal activity and phagocytosis. The lipid A-specific murine monoclonal antibody (mAb) E5 was evaluated in vitro for its ability to enhance antibacterial effects in concert with antibiot...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/0924-8579(94)90008-6
更新日期：1994-08-01 00:00:00
abstract：:Leptospirosis is the most common zoonotic disease and is endemic worldwide. The antibiotic susceptibilities of Leptospira strains isolated from both humans and animals are poorly documented. This issue is particularly important for isolates from food-producing animals which are regularly exposed to antibiotic treatmen...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2017.12.024
更新日期：2018-05-01 00:00:00
abstract：:PCR amplification of 55 strains of Enterobacter cloacae indicated 51 of them had amp C structural gene verified by DNA sequence and Southern blotting. All PCR products were cleaved into 666- and 328-bp fragments by Kpn1 restriction enzyme. Imipenem was the most potent inducer for mRNA expression of amp C gene and beta...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/s0924-8579(01)00414-9
更新日期：2001-10-01 00:00:00
abstract：:Based on past information from the literature and our own review, it appears that imipenem can be used effectively as an initial empirical therapy of febrile neutropenia, as a monotherapy, even in patients with haematological malignancies. The response rate is outstanding in microbiologically documented infections, na...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章,评审
doi：10.1016/s0924-8579(03)00002-5
更新日期：2003-05-01 00:00:00
abstract：OBJECTIVES:Since the early 2000s, Escherichia coli resistance to third-generation cephalosporins (3GCs) has been increasing in all European countries, mainly due to the spread of extended spectrum β-lactamases (ESBLs). Here we present a retrospective study that combines resistance of E. coli to 3GCs and quinolones with...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2020.105909
更新日期：2020-05-01 00:00:00
abstract：:Susceptibility testing was conducted on 1357 isolates of Neisseria gonorrhoeae isolated from 1993 through 2002 in Japan to assess the antimicrobial resistance. Selected isolates were characterised by auxotype and analysis was done for mutations within the quinolone resistance-determining region (QRDR) in the gyrA and ...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2004.02.005
更新日期：2004-09-01 00:00:00
abstract：:Fluoroquinolone (FQ) resistance is usually caused by point mutations within the quinolone resistance-determining regions (QRDRs) of gyrA, gyrB, parC and/or parE. However, little is known about the worldwide increase in FQ-resistant Escherichia coli or, more specifically, about the geographical distribution of QRDR mut...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2009.12.005
更新日期：2010-04-01 00:00:00
abstract：:Norvancomycin is an antibiotic that has been approved for the treatment of infections caused by antibiotic-resistant Gram-positive bacteria and has been used in China for more than a decade. However, the cerebrospinal fluid (CSF) penetration of norvancomycin has not been evaluated. The aims of the study were (i) to in...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2017.01.014
更新日期：2017-05-01 00:00:00
abstract：:Resistance among mycobacteria leading to multidrug-resistant and extensively drug-resistant tuberculosis is a major threat. However, nanotechnology has provided new insights in drug delivery and medicine development. This is the first comparative report to determine the activity of chemically and biologically synthesi...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2015.03.014
更新日期：2015-08-01 00:00:00
abstract：:Acinetobacter baumannii has emerged as a major pathogen causing nosocomial infections, particularly in critical patients admitted to the Intensive Care Unit. Increasing resistance to carbapenems in A. baumannii has been observed worldwide. Here we report the clinical impact and mechanism of imipenem heteroresistance (...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2010.12.015
更新日期：2011-04-01 00:00:00
abstract：:For several years, the threat of antibiotic resistance and its health cost has dramatically risen and various alarming figures have been proposed to illustrate the mortality due to antibiotic resistance. However, predictions concerning different living beings are doomed to failure, as theorised in Alice's 'living croq...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章,评审
doi：10.1016/j.ijantimicag.2016.11.015
更新日期：2017-05-01 00:00:00
abstract：:Chemotherapy is a cornerstone of cancer treatment but it can have serious side effects, such as intestinal mucositis. This work reports the susceptibility/resistance profiles of 34 species of lactic acid bacteria (LAB), bifidobacteria and other intestinal bacteria from different collections to various chemotherapeutic...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2016.07.011
更新日期：2016-11-01 00:00:00
abstract：:The Kingdom of Saudi Arabia occupies four-fifths of the Arabian Peninsula, with a land area of 2 million square kilometres. Saudi Arabia holds a unique position in the Islamic world, as the custodian of the two holiest places of Islam, in Mecca and Medina. Annually, some 2 million Muslims from over 140 countries embar...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/s0924-8579(02)00364-3
更新日期：2003-02-01 00:00:00
abstract：:While most Entamoeba histolytica appearing in male homosexuals infected with human immunodeficiency virus (HIV) is considered non-invasive in Western countries, and treatment of amebiasis in these persons has received very little attention, in Japan some male homosexual amebiasis patients infected with HIV complain of...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/s0924-8579(96)00327-5
更新日期：1996-10-01 00:00:00
abstract：:In this first multi-centre study in Scotland, 1028 consecutive Gram-negative and staphylococci strains were obtained from four major teaching hospitals. E. coli was the most common organism among both intensive care units (ICUs) (39%) and non-ICU strains (46.6%). The prevalence of antibiotic resistance among E. coli w...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/0924-8579(96)00310-x
更新日期：1996-07-01 00:00:00
abstract：:The aim of this review was to evaluate the susceptibility of contemporary Gram-positive and Gram-negative bacteria to fosfomycin. PubMed and Scopus databases were systematically searched to identify studies published in print or electronically from January 2010 until June 2015. In total, 84 studies were selected. Susc...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章,评审
doi：10.1016/j.ijantimicag.2016.02.001
更新日期：2016-04-01 00:00:00
abstract：:We evaluated the antimicrobial activity of fusidic acid (CEM-102) against 1140 clinical strains of Gram-positive bacteria obtained from patients with bacteraemia or skin and skin-structure infections collected in more than 30 medical centres in the USA and Canada over a 10-year period (1997-2006). Fusidic acid was ver...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2009.10.023
更新日期：2010-03-01 00:00:00
