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 exposures of clarithromycin for 62 isolates of Streptococcus pneumoniae considered resistant by current methods of breakpoint determinations. Changes in bacterial density were compared between treated animals and untreated controls. Inhibition of bacterial growth was consistently observed for the majority of isolates tested with mean (S.D.) reductions in logCFU per lung of -0.88 (0.69), -1.02 (0.87), -0.47 (0.79), -0.84 (0.66), -0.25 (0.26), -0.80 (0.72) and -0.58 (0.47) for MICs of 1, 2, 4, 8, 16, 32 and 64 mg/l, respectively. A beneficial treatment effect was clearly noted for isolates with clarithromycin MICs <==8 mg/l. However, the sample size of isolates tested beyond the MIC of 8 mg/l was diminished due to mortality in both treated and untreated animals. Consistent suppression of bacterial growth observed in this neutropenic model provides support for the in vivo efficacy of clarithromycin with low-level macrolide-resistant S. pneumoniae.
journal_name
Int J Antimicrob Agentsjournal_title
International journal of antimicrobial agentsauthors
Maglio D,Capitano B,Banevicius MA,Tessier PR,Nightingale CH,Nicolau DPdoi
10.1016/j.ijantimicag.2003.09.028subject
Has Abstractpub_date
2004-05-01 00:00:00pages
498-501issue
5eissn
0924-8579issn
1872-7913pii
S0924857904000408journal_volume
23pub_type
杂志文章abstract：:Antimicrobial agents (AMAs) have been used in agriculture since the 1950s as growth-promoting agents [antimicrobial growth promoters (AGPs)]. They have provided benefits to the agricultural industry by increasing production efficiencies and maximising livestock health, yet the potential risks surrounding resistance to...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章,评审
doi：10.1016/j.ijantimicag.2016.08.006
更新日期：2017-01-01 00:00:00
abstract：:Growth of Staphylococcus aureus in the presence of salicylate leads to reduced ciprofloxacin and ethidium accumulation and increased resistance to ethidium. Salicylate induced reduction in ciprofloxacin accumulation is energy-independent while salicylate induced alterations in ethidium accumulation and efflux is proto...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/s0924-8579(02)00162-0
更新日期：2002-09-01 00:00:00
abstract：:The resistance rates of ampicillin/sulbactam 2:1 against imipenem-susceptible and -resistant Acinetobacter baumannii were 23.5 and 30%, respectively. Ceftazidime/sulbactam combination showed significant reduction of resistant rates against Enterobacter cloacae, A. baumannii, ESBL Klebsiella pneumoniae. MIC90 of cefope...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2003.10.008
更新日期：2004-06-01 00:00:00
abstract：:Colistin remains a last-line antibiotic for the treatment of infections by multidrug-resistant Acinetobacter species. However, mortality rates are high in patients with Acinetobacter infection receiving colistin treatment. This multicentre study evaluated whether colistin susceptibility, additional antimicrobial agent...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2020.105956
更新日期：2020-06-01 00:00:00
abstract：:The aim of this study was to investigate recurrent infections in individual patients caused by extended-spectrum β-lactamase and plasmid AmpC β-lactamase-producing Escherichia coli (ESBL/pAmpC-Ec) isolates with >12-month interval. The Danish national collection of ESBL/pAmpC-Ec isolates collected from January 2014 thr...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2020.106041
更新日期：2020-07-01 00:00:00
abstract：:Invasive Streptococcus pneumoniae infections in children are associated with serious consequences in terms of morbidity and mortality. The main objective of the study was to determine if invasive infections caused by penicillin-resistant Streptococcus pneumoniae (PRSP) differed in clinical presentation, outcome, risk ...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/s0924-8579(02)00127-9
更新日期：2002-08-01 00:00:00
abstract：:The epidemiology of multidrug-resistant bacteria (MDRB) has changed significantly in European healthcare settings, with a decrease in frequency of meticillin-resistant Staphylococcus aureus and an increase in extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae. Little is known about the effects of these ...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2015.07.010
更新日期：2015-11-01 00:00:00
abstract：:We evaluated the efficacy of amphotericin B (1.5mg/kg/day), voriconazole (60mg/kg/day) and posaconazole (60mg/kg/day) in a murine model of systemic infection caused by Neoscytalidium dimidiatum. All the treatments were able to prolong survival and to reduce the tissue burden in the spleen and kidneys of infected mice....
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2009.09.028
更新日期：2010-02-01 00:00:00
abstract：:Two general strategies have been adopted to develop catheter materials that resist encrustaion by bacterial biofilms: (a) the incorporation of antimicrobial agents into the polymers and (b) the production of materials with surface properties which prevent the adherence of bacterial cells. Our experience to develop non...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/s0924-8579(02)00091-2
更新日期：2002-06-01 00:00:00
abstract：:The extracts from the starfish Asterina pectinifera obtained using various organic solvents and distilled water were tested for their antimicrobial activities against fungi and yeasts. The methanol and water extracts were found to be the most active and Aspergillus spp. and Cryptococcus neoformans proved to be sensiti...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/s0924-8579(98)00079-x
更新日期：1999-01-01 00:00:00
abstract：:The efficacy of amoxycillin-clavulanic acid (10 and 15 mg/kg amoxycillin) and erythromycin (20 and 50 mg/kg) was assessed in a gerbil model of otitis media with effusion induced by beta-lactamase-producing Haemophilus influenzae. Animals were divided into groups receiving acetaminophen concomitantly or not receiving i...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/s0924-8579(03)00148-1
更新日期：2003-11-01 00:00:00
abstract：:Controversy continues regarding whether the presence of meticillin resistance increases mortality risk in Staphylococcus aureus infections. In this study, we assessed the role of meticillin resistance in survival of patients with S. aureus infection included in the EPIC II point-prevalence study of infection in critic...
journal_title：International journal of antimicrobial agents
pub_type： 临床试验,杂志文章,多中心研究
doi：10.1016/j.ijantimicag.2011.05.013
更新日期：2011-10-01 00:00:00
abstract：:The antimicrobial activities of levofloxacin, clarithromycin and KRM-1648 against Mycobacterium tuberculosis (MTB) and Mycobacterium avium complex (MAC) residing in Mono Mac 6 human macrophage-like cells (MM6-Mphis) and A-549 human type II alveolar epithelial cells (A-549 cells) were studied. We measured the antimicro...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/s0924-8579(00)00163-1
更新日期：2000-09-01 00:00:00
abstract：:The incidence of severe group A streptococcal infection and the streptococcal toxic shock syndrome has increased since 1986. In contrast to earlier times, aggressive streptococal infection is now more likely to affect patients between 20 and 50 years of age who do not have predisposing underlying diseases. Its viral-l...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/0924-8579(94)90029-9
更新日期：1994-01-01 00:00:00
abstract：:Over the past decade, non-fermenting Gram-negative bacteria have emerged as important opportunistic pathogens in the increasing population of patients who are immunocompromised by their disease or medical treatment. These bacteria are assisted by their ubiquitous distribution in the environment and have a propensity f...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章,评审
doi：10.1016/S0924-8579(07)72176-3
更新日期：2007-05-01 00:00:00
abstract：:The role of membrane permeabilisation and disruption in the mechanism of action of some polymyxin analogues against Gram-negative organisms is contentious. The effects of polymyxin B (PMB) and its analogue polymyxin B nonapeptide (PMBN) on Escherichia coli envelopes should correlate, but previous work by other workers...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2007.10.005
更新日期：2008-03-01 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：:The use of biomarkers might help to avoid antibiotic misuse and overuse and to curb the rising incidence of microbial resistance. Amongst >100 biomarkers proposed for use as infection/sepsis markers, procalcitonin is the most frequently evaluated. It has been tested in 11 randomised controlled trials with more than 35...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章,评审
doi：10.1016/j.ijantimicag.2010.11.009
更新日期：2010-12-01 00:00:00
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 nu...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2020.105993
更新日期：2020-07-01 00:00:00
abstract：:In vitro and clinical data were analysed to evaluate the susceptibility profile of itraconazole in light of the new cut-off points. The in vitro activity of itraconazole was compared with that of eight comparators against 119 Candida bloodstream isolates from 2015 to 2018. Minimum inhibitory concentrations (MICs) were...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2019.06.019
更新日期：2019-10-01 00:00:00
abstract：:Spongistatin 1, a macrocyclic lactone polyether from the marine sponge Hyrtios erecta, was fungicidal for a variety of opportunistic yeasts and filamentous fungi, including strains resistant to amphotericin B, ketoconazole and flucytosine. In broth macrodilution assays, MICs ranged from 0.195 to 12.5 microg/ml, and mi...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/s0924-8579(97)00044-7
更新日期：1997-01-01 00:00:00
abstract：:The bactericidal activity and resistance selectivity of garenoxacin against Streptococcus pneumoniae with mutations in ParC (S79F) or both GyrA (S81F) and ParC (D83Y and K137N) were investigated using in vitro pharmacokinetic models simulating plasma concentrations for a standard clinical regimen [400mg once daily (q....
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2011.09.021
更新日期：2012-02-01 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：:We employed an in-vivo pharmacokinetic/in-vitro pharmacodynamic method to simulate bacterial killing in plasma and the interstitium of skeletal muscle tissue after intravenous administration of 2 g of cefpirome and 8 g of fosfomycin alone and in combination to patients with sepsis. Interstitial antimicrobial concentra...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/s0924-8579(03)00047-5
更新日期：2003-06-01 00:00:00
abstract：:Gram-negative bacterial pathogens are intrinsically resistant to several antibiotics that are not able to penetrate the cell envelope barrier. The aim of this study was to identify peptides that at low concentrations induce susceptibility to these antibiotics in multidrug-resistant (MDR) Gram-negative bacterial strain...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2018.10.025
更新日期：2019-06-01 00:00:00
abstract：:In recent years, the emergence of methicillin-resistant Staphylococcus aureus (MRSA) strains has been observed in ocular infections. Resistance of MRSA to second- and third-generation fluoroquinolones has increased interest in the fourth-generation fluoroquinolones. In this study, the antibacterial activity of gemiflo...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2016.06.026
更新日期：2016-10-01 00:00:00
abstract：:The activity of telavancin was evaluated against Staphylococcus spp. collected from European hospitals as part of an international surveillance study (2007-2008). A total of 7534 staphylococcal clinical isolates [5726 Staphylococcus aureus and 1808 coagulase-negative staphylococci (CoNS)] were included. Isolates were ...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2010.05.016
更新日期：2010-10-01 00:00:00
abstract：:In the present study we tested the ability of beta-lactam antibiotics and other cell-wall antibiotics to inhibit the production of listeriolysin which is the main virulence factor of L. monocytogenes. The amount of listeriolysin produced was measured in the supernatants with a sensitive hemolysin assay and as beta-gal...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/0924-8579(96)00014-3
更新日期：1996-05-01 00:00:00
abstract：:Renal, liver, heart and lung transplantation are now considered to be the standard therapeutic interventions in patients with end-stage organ failure. Infectious complications following solid organ transplantation (SOT) are relatively common owing to the transplant recipient's overall immunosuppressed status. The inci...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章,评审
doi：10.1016/S0924-8579(08)70017-7
更新日期：2008-11-01 00:00:00
abstract：:The objective of this study was to comprehensively identify the target genes regulated by the two-component regulatory system VraSR in Staphylococcus aureus and to clarify the role of VraSR in low-level vancomycin resistance. Expression of vraS was determined by real-time quantitative reverse transcriptase PCR (qRT-PC...
journal_title：International journal of antimicrobial agents
pub_type： 杂志文章
doi：10.1016/j.ijantimicag.2016.02.003
更新日期：2016-05-01 00:00:00
