Abstract：
:The aim of this study was to evaluate the in vitro efficacy of ceftobiprole and comparator antibiotics, either alone or in combination, in staphylococcal MBEC™ (minimum biofilm eradication concentration) and colony biofilm assays at dilutions of the maximum free-drug plasma concentration attained during clinical use (fCmax). Staphylococci tested included meticillin-susceptible and meticillin-resistant Staphylococcus aureus (n=6) and Staphylococcus epidermidis (n=2). Relative to no-drug controls, after 7 days of exposure ceftobiprole concentrations from 1/4 fCmax to fCmax generally decreased CFUs in MBEC or colony biofilms of S. aureus isolates by ca. 1.5log10 to ≥2.5log10. Gentamicin reduced colony biofilm CFUs by ≥1.4log10 at these concentrations with gentamicin-susceptible isolates. Following 7 days of exposure, vancomycin and rifampicin were ineffective as single agents or in combination in the colony model, but yielded CFU decreases from 0 to 5log10 in the MBEC model. Treatment of biofilms with rifampicin for 7 days yielded rifampicin-resistant mutants, and the selection of rifampicin resistance was inhibited by co-treatment with ceftobiprole. Thus, ceftobiprole alone or in combination demonstrated promising activity against biofilms of meticillin-susceptible and -resistant staphylococci at clinically relevant concentrations. In contrast, vancomycin and rifampicin, two agents used clinically for the treatment of biofilm infections, tested separately or together gave inconsistent results and generally had little impact on cell viability.
journal_name
Int J Antimicrob Agentsjournal_title
International journal of antimicrobial agentsauthors
Abbanat D,Shang W,Amsler K,Santoro C,Baum E,Crespo-Carbone S,Lynch ASdoi
10.1016/j.ijantimicag.2013.09.013subject
Has Abstractpub_date
2014-01-01 00:00:00pages
32-9issue
1eissn
0924-8579issn
1872-7913pii
S0924-8579(13)00345-2journal_volume
43pub_type
杂志文章abstract：:The activity of amphotericin B, fluconazole, flucytosine, itraconazole and voriconazole was tested in vitro against 618 clinical Candida spp. isolates, using the broth microdilution or the disk diffusion method (voriconazole). Amphotericin B and voriconazole were the most potent antifungal agents assayed (100% of susc...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2006.08.047
更新日期：2007-02-01 00:00:00
abstract：:Acinetobacter baumannii has been associated with several severe hospital-acquired infections such as ventilator-associated pneumonia and meningitis. Sulbactam, a β-lactamase inhibitor, is usually combined with β-lactam antibiotics to treat infections. It has been found that sulbactam alone may be used to treat infecti...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2014.03.004
更新日期：2014-07-01 00:00:00
abstract：:Antimicrobial stewardship (AMS) is the cornerstone activity in the combat against antimicrobial resistance. In order to ensure sustainable deployment and development of AMS, a strategic and regulatory framework needs to be provided by national healthcare authorities. Experts from 32 European countries, Israel and Turk...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2018.07.019
更新日期：2018-11-01 00:00:00
abstract：:In addition to the absolute case number, a rapid increase in the number of COVID-19 cases within a short time results in insufficiency of healthcare systems and further negatively affects patient outcomes. This study was conducted to investigate the association between the outcomes of COVID-19 patients and daily cumul...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2020.106001
更新日期：2020-06-01 00:00:00
abstract：:Pseudomonas aeruginosa (PA) is a major cause of healthcare-associated infections. Antipseudomonal carbapenems are among the antimicrobial agents used to treat PA infections, but several mechanisms of resistance, including the production of a carbapenemase (CP), may compromise their clinical efficacy. The objectives of...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2020.105959
更新日期：2020-06-01 00:00:00
abstract：:The purpose of this study was to compare the safety and efficacy of lomefloxacin with that of cefaclor in the treatment of adult secondary bacterial skin and skin structure infections. The study was conducted as a randomized, single-blind comparison. Eighty patients enrolled in the study, of which 74 were evaluable: 3...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/0924-8579(92)90028-p
更新日期：1992-12-01 00:00:00
abstract：:Antimicrobial peptides (AMPs) are produced by all forms of living organisms and represent a novel class of antibiotics to treat infectious diseases. In this study, 29 AMPs of varying length and characteristics were synthesised chemically and were evaluated for their ability to inhibit the growth of Bacillus globigii, ...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2010.06.038
更新日期：2010-10-01 00:00:00
abstract：:Resistance to chemotherapy is a common clinical problem in patients with infectious diseases as well as in patients with cancer. During treatment of infections or malignant tumors, the drug targets of prokaryotic or eukaryotic microorganisms and neoplastic cells are often found to be refractory to a variety of drugs t...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章,评审
doi：10.1016/s0924-8579(03)00203-6
更新日期：2003-09-01 00:00:00
abstract：:Quinolone and macrolide resistance of Campylobacter jejuni and Campylobacter coli mainly depend on a mutation in gyrA and in 23S rDNA, respectively. In order to detect quinolone and/or macrolide resistant C. jejuni and C. coli strains, a macrolide and quinolone line probe assay (MQ-LiPA) was developed and 42 C. jejuni...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/s0924-8579(03)00178-x
更新日期：2003-10-01 00:00:00
abstract：:Macrolides have been reported to modify the host immune and inflammatory responses both in vivo and in vitro. We examined the in vitro effect of the macrolides tilmicosin and tylosin, which are only used in the veterinary clinic, on the production of nitric oxide (NO), prostaglandin E(2) (PGE(2)) and cytokines by lipo...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2005.12.010
更新日期：2006-05-01 00:00:00
abstract：:Infectious diseases are among the most common reasons for admission to hospital and can easily lead to sepsis. Sepsis is globally associated with increased mortality, and although biomarkers could help clinicians in the early diagnosis of sepsis and immediate onset of antibiotics, there are always questions to be answ...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章,评审
doi：10.1016/j.ijantimicag.2015.10.010
更新日期：2015-12-01 00:00:00
abstract：:The activity of six fluoroquinolones (FQs) was determined against 100 methicillin-resistant Staphylococcus aureus (MRSA) isolated in 2002 along with mutations in the grlA and gyrA genes and in the norA promoter of these isolates. Of the isolates tested, 97% had mutations in grlA and gyrA. A single mutation in grlA and...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2004.11.016
更新日期：2005-05-01 00:00:00
abstract：:Treatment options for multidrug-resistant (MDR) strains of Acinetobacter baumannii that acquire resistance to colistin are limited. Acinetobacter baumannii can become highly resistant to colistin through complete loss of lipopolysaccharide (LPS) owing to mutations in the genes encoding the first three enzymes involved...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2015.07.017
更新日期：2015-12-01 00:00:00
abstract：:Many antimicrobial agents including new quinolones (NQs) influence the cellular defense mechanisms such as polymorphonuclear leukocytes (PMNs), macrophages and lymphocytes. We examined the effects of NQs on superoxide (SO) production of PMNs following stimulation of phorbol myristate acetate (PMA). Ofloxacin (OFLX) an...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/0924-8579(95)00024-0
更新日期：1995-12-01 00:00:00
abstract：:This study aimed to forecast the incidence rate of carbapenem resistance and to assess the impact of an antimicrobial stewardship intervention using routine antimicrobial consumption surveillance data. Following an outbreak of OXA-48-producing Klebsiella pneumoniae (January 2008-April 2010) in a renal cohort in London...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2015.03.005
更新日期：2015-08-01 00:00:00
abstract：:Use of rifampicin (RIF) in combination with colistin (COL) has been proposed for the treatment of multidrug-resistant Acinetobacter baumannii infections owing to in vitro synergism. The aim of the present study was to evaluate the molecular epidemiology and mechanisms of RIF resistance in 57 clinical isolates of A. ba...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2011.09.016
更新日期：2012-01-01 00:00:00
abstract：:Skin bacterial colonization/infection is a frequent cause of morbidity in patients with chronic wounds and allergic/inflammatory skin diseases. This study aimed to develop a novel approach to eradicate meticillin-resistant Staphylococcus aureus (MRSA) from human skin. To achieve this, the stability and antibacterial a...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2019.07.014
更新日期：2019-11-01 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：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：OBJECTIVES:To compare the in vitro activity of linezolid with 12 other antimicrobials against 190 strains of the coryneform bacteria, including 60 strains of C. amycolatum, 30 of C. striatum, 30 of C. jeikeium, 10 of C. urealyticum, 20 of B. casei, 20 of D. hominis and 20 of T. otitidis. METHODS:Minimum inhibitory con...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2006.11.032
更新日期：2007-06-01 00:00:00
abstract：:The emergence of multidrug-resistant (MDR) Pseudomonas aeruginosa isolates producing IMP-type metallo-β-lactamases (MBLs) and aminoglycoside 6'-N-acetyltransferase [AAC(6')-Iae] has become a serious problem in medical settings in Japan. A total of 217 MDR P. aeruginosa isolates were obtained from August 2009 to April ...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2012.01.020
更新日期：2012-06-01 00:00:00
abstract：:Although the vancomycin minimum inhibitory concentration (VMIC) susceptibility breakpoint for Staphylococcus aureus was recently lowered to ≤2 mg/L, it is argued that isolates in the higher levels of the susceptible range may bear adverse clinical outcomes. Clinical outcomes (all-cause mortality and treatment failure)...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.ijantimicag.2012.07.023
更新日期：2012-12-01 00:00:00
abstract：:The chequerboard technique was used to look for synergistic combinations of ceftazidime, imipenem and pefloxacin. The synergistic combinations were used in vivo in mice experimentally infected with Escherichia coli, Salmonella typhimurium and Pseudomonas aeruginosa. In vitro ceftazidime/imipenem, ceftazidime/pefloxaci...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/s0924-8579(03)00127-4
更新日期：2003-12-01 00:00:00
abstract：:Neurological complications of antibiotics are relatively common in renal failure. Central nervous system neurotoxicity due to penicillin and beta-lactam antibiotics is best documented with fewer accounts of ototoxicity, peripheral nerve toxicity and neuromuscular blockade. In the context of risk stratification, the go...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章,评审
doi：10.1016/j.ijantimicag.2003.11.004
更新日期：2004-03-01 00:00:00
abstract：:Many studies have demonstrated that sub-minimum inhibitory concentrations (sub-MICs) of antimicrobial agents can inhibit bacterial biofilm formation. However, the mechanisms by which antimicrobial agents at sub-MICs inhibit biofilm formation remain unclear. At present, most studies are focused on Gram-negative bacteri...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2012.01.009
更新日期：2012-05-01 00:00:00
abstract：:Gentamicin-containing polymethylmethacrylate (PMMA) beads are frequently used to prevent and treat orthopaedic infections. The beads are typically inserted to fill anatomical defects secondary to surgical debridement. Local gentamicin use results in low serum levels whilst achieving high concentrations at the site of ...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章,评审
doi：10.1016/j.ijantimicag.2011.03.008
更新日期：2011-11-01 00:00:00
abstract：:Until now, studies confirming the safety of glycopeptide restriction in the empirical treatment of prolonged fever and neutropenia included only nine children. In an open-label observational study, the use of teicoplanin in paediatric oncology patients was investigated. A period of unrestricted use (2001-2003) was com...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2006.08.007
更新日期：2006-11-01 00:00:00
abstract：:Isolates of Streptococcus pneumoniae collected over the first 4 years of the PROTEKT study were tested for susceptibility to penicillin, azithromycin and telithromycin. A total of 20,750 isolates were collected from 39 countries. Penicillin non-susceptibility rates were stable over the study period; overall, 21.8% of ...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章,多中心研究
doi：10.1016/j.ijantimicag.2005.04.022
更新日期：2005-12-01 00:00:00
abstract：:Uptake of [14C]-azithromycin into THP-1 human monocytes was determined at pH 7.4, 6.8 or 5.5 over 4-log antibiotic concentrations for 24 h under a number of conditions. Stimulation of cells was with bacteria, latex beads, lipopolysaccharide (LPS), or zymogen A. Subcellular organelle disposition was determined after is...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/s0924-8579(02)00187-5
更新日期：2002-11-01 00:00:00
abstract：:Antimicrobial peptides (AMPs) are essential host defence molecules found in a wide variety of species and are promising antibacterial therapeutic candidates. Focusing on the human cathelicidin peptide LL-37, the aim of the present study was to explore the mechanisms of action and antimicrobial activities of a library ...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2010.06.031
更新日期：2010-11-01 00:00:00
