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https://www.readbyqxmd.com/read/28652234/meropenem-vaborbactam-tested-against-contemporary-gram-negative-isolates-collected-worldwide-during-2014-including-carbapenem-resistant-kpc-producing-multidrug-resistant-and-extensively-drug-resistant-enterobacteriaceae
#1
Mariana Castanheira, Michael D Huband, Rodrigo E Mendes, Robert K Flamm
We evaluated the activity of meropenem-vaborbactam against contemporary non-fastidious gram-negative clinical isolates, including resistant phenotypes and carbapenemase genotypes of Enterobacteriaceae Meropenem-vaborbactam (inhibitor at 8 μg/ml) and comparators were susceptibility tested using reference broth microdilution methods against 14,304 gram-negative clinical isolates collected worldwide during 2014. Carbapenemase encoding genes were screened by PCR/sequencing. Meropenem-vaborbactam (MIC50/90, ≤0...
June 26, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28649083/report-prevalence-of-hospital-acquired-burkholderia-cepacia-infection-and-its-antimicrobial-susceptibility-in-a-chinese-hospital
#2
Jinju Duan, Jianbang Kang, Ting Han, Yuqin Ma, Qian Guo, Yan Song, Qiang Zhao, Yan Yang, Ruiqin Zhang
This study aimed to investigate antimicrobial susceptibility of hospital acquired Burkholderia cepacia infection in Shanxi (China) during August 2009 and December 2012. To characterize an emerging nocosomial infection. The medical records of 112 patients that were tested positive for B. cepacia were retrospectively analyzed. The K-B disk diffusion method was used to determine the drug susceptibility of the isolated strains. A hundred and fifty strains of B. cepacia were isolated from 112 patients. The sensitivity rates of B...
March 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28648181/a-highly-sensitive-carbapenemase-assay-using-laser-desorption-ionization-mass-spectrometry-based-on-a-parylene-matrix-chip
#3
Jong-Min Park, Jo-Il Kim, Joo-Yoon Noh, Mira Kim, Min-Jung Kang, Jae-Chul Pyun
A quantitative carbapenemase assay was developed using laser desorption/ionization mass spectrometry (LDI-MS) based on a parylene-matrix chip. As a first step, the reproducibility (spot-to-spot, shot-to-shot, and day-to-day) of LDI-MS based on a parylene-matrix chip and the quantification ranges for four carbapenem antibiotics (doripenem, ertapenem, imipenem, and meropenem) were determined. A carbapenem-susceptibility test was performed using the four carbapenems and 51 bacterial strains that displayed (1) carbapenem resistance with carbapenemase, (2) carbapenem resistance without carbapenemase, or (3) carbapenem susceptibility...
September 2017: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/28632837/-conventional-versus-prolonged-infusion-of-meropenem-in-neonates-with-gram-negative-late-onset-sepsis-a-randomized-controlled-trial
#4
Alejandra Sandoval
No abstract text is available yet for this article.
April 2017: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/28630192/in-vitro-activity-of-aztreonam-avibactam-against-enterobacteriaceae-and-pseudomonas-aeruginosa-isolated-by-clinical-laboratories-in-40-countries-from-2012-to-2015
#5
James A Karlowsky, Krystyna M Kazmierczak, Boudewijn L M de Jonge, Meredith A Hackel, Daniel F Sahm, Patricia A Bradford
The combination of the monobactam, aztreonam, and the non-β-lactam β-lactamase inhibitor, avibactam, is currently in clinical development for the treatment of serious infections caused by metallo-β-lactamase (MBL)-producing Enterobacteriaceae, a difficult to treat subtype of carbapenem-resistant Enterobacteriaceae for which therapeutic options are currently very limited. The present study tested clinically significant isolates of Enterobacteriaceae (n=51,352) and Pseudomonas aeruginosa (n=11,842) collected from hospitalized patients in 208 medical center laboratories from 40 countries from 2012 to 2015 for in vitro susceptibility to aztreonam-avibactam, aztreonam, and comparator antimicrobial agents using standard broth microdilution methodology...
June 19, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28630181/in-vitro-activity-of-the-siderophore-cephalosporin-cefiderocol-against-a-recent-collection-of-clinically-relevant-gram-negative-bacilli-from-north-america-and-europe-including-carbapenem-non-susceptible-isolates-the-sidero-wt-2014-study
#6
Meredith A Hackel, Masakatsu Tsuji, Yoshinori Yamano, Roger Echols, James A Karlowsky, Daniel F Sahm
Cefiderocol (formerly S-649266) is an investigational siderophore cephalosporin. Iron-depleted cation-adjusted Mueller-Hinton broth (ID-CAMHB) was prepared according to the Clinical and Laboratory Standards Institute (CLSI) protocol and used to perform broth microdilution testing of cefiderocol against a 2014-2015 collection of clinical isolates of gram-negative bacilli from North America (n=4,239) and Europe (n=4,966). The concentration of cefiderocol inhibiting 90% of isolates tested (MIC90) was: 0.5 (North America; n=3,007) and 1 μg/ml (Europe; n=3,080) for all isolates of Enterobacteriaceae; 1 (North America; n=30) and 4 μg/ml (Europe; n=139) for meropenem-non-susceptible (MIC ≥2 μg/ml) isolates of Enterobacteriaceae; 0...
June 19, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28624864/the-clinical-significance-of-pneumonia-in-patients-with-respiratory-specimens-harbouring-multidrug-resistant-pseudomonas-aeruginosa-a-5-year-retrospective-study-following-5667-patients-in-four-general-icus
#7
B Borgatta, S Gattarello, C A Mazo, A T Imbiscuso, M N Larrosa, M Lujàn, J Rello
Pseudomonas aeruginosa is the leading cause of pneumonia in intensive care units (ICUs), with multidrug-resistant (MDR) strains posing a serious threat. The aim of this study was to assess the clinical relevance of MDR Pseudomonas isolates in respiratory clinical specimens. A 5-year retrospective observational study in four medical-surgical ICUs from a referral hospital was carried out. Of 5667 adults admitted to the ICU, 69 had MDR-PA in respiratory samples: 31 were identified as having pneumonia (HAP/VAP): 21 ventilator-associated pneumonia (VAP) and ten hospital-acquired pneumonia (HAP)...
June 17, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28623550/antibiotic-susceptibility-profiles-among-campylobacter-isolates-obtained-from-international-travelers-between-2007-and-2014
#8
A Post, D Martiny, N van Waterschoot, M Hallin, U Maniewski, E Bottieau, M Van Esbroeck, E Vlieghe, S Ombelet, O Vandenberg, J Jacobs
Campylobacter infection is a common cause of diarrhea among international travelers. We studied antibiotic resistance patterns among Campylobacter isolates obtained from international travelers according to travel destination. Three collections of isolates obtained from international travelers between 2007 and 2014 (Institute of Tropical Medicine, the "Laboratoire Hospitalier Universitaire de Bruxelles "and the Belgian National Reference Centre for Campylobacter) were used. Isolates were tested for minimal inhibitory concentration (MIC) values (E-test macromethod) for fluoroquinolones, macrolides, tetracyclines, amoxicillin-clavulanic acid, and meropenem...
June 17, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28619105/patterns-of-antimicrobial-resistance-in-intensive-care-unit-patients-a-study-in-vietnam
#9
Giang M Tran, Thao P Ho-Le, Duc T Ha, Chau H Tran-Nguyen, Tuyet S M Nguyen, Thao T N Pham, Tuyet A Nguyen, Dung A Nguyen, Hoa Q Hoang, Ngoc V Tran, Tuan V Nguyen
BACKGROUND: Antimicrobial resistance has emerged as a major concern in developing countries. The present study sought to define the pattern of antimicrobial resistance in ICU patients with ventilator-associated pneumonia. METHODS: Between November 2014 and September 2015, we enrolled 220 patients (average age ~ 71 yr) who were admitted to ICU in a major tertiary hospital in Ho Chi Minh City, Vietnam. Data concerning demographic characteristics and clinical history were collected from each patient...
June 15, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28618388/simultaneous-determination-of-nine-%C3%AE-lactam-antibiotics-in-human-plasma-by-an-ultrafast-hydrophilic-interaction-chromatography-tandem-mass-spectrometry
#10
Alan Abdulla, Soma Bahmany, Rixt A Wijma, Bart C H van der Nagel, Birgit C P Koch
Contemporary β-lactam antibiotic dosing is debatable in severely ill patients, since the occurrence of pathophysiological changes in critical illness can result in great inter-individual variability. Therapeutic drug monitoring (TDM) is a commonly used dosing strategy to optimize exposure and thereby minimize toxicity and maximize the efficacy. Currently, TDM of β-lactam antibiotics is rarely performed, due to poor availability in clinical practice. We describe an ultrafast Hydrophilic-Interaction Chromatography (HILIC) based UPLC-MS/MS method for the determination of amoxicillin, benzylpenicillin, cefotaxime, cefuroxime, ceftazidime, flucloxacillin, imipenem, meropenem and piperacillin in human plasma...
June 8, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28616823/population-pharmacokinetics-of-combined-intravenous-and-local-intrathecal-administration-of-meropenem-in-aneurysm-patients-with-suspected-intracranial-infections-after-craniotomy
#11
Xingang Li, Shusen Sun, Qiang Wang, Zhigang Zhao
BACKGROUND AND OBJECTIVE: For patients with intracranial infection, local intrathecal administration of meropenem may be a useful method to obtain a sufficient drug concentration in the cerebral spinal fluid (CSF). However, a large inter-individual variability may pose treatment efficacy at risk. This study aimed to identify factors affecting drug concentration in the CSF using population pharmacokinetics method. METHODS: After craniotomy, aneurysm patients with an indwelling lumbar cistern drainage tube who received a combined intravenous and intrathecal administration of meropenem for the treatment of suspected intracranial infection were enrolled...
June 14, 2017: European Journal of Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/28614759/structure-activity-relationship-study-and-optimisation-of-2-aminopyrrole-1-benzyl-4-5-diphenyl-1h-pyrrole-3-carbonitrile-as-a-broad-spectrum-metallo-%C3%AE-lactamase-inhibitor
#12
Ross P McGeary, Daniel T C Tan, Christopher Selleck, Marcelo Monteiro Pedroso, Hanna E Sidjabat, Gerhard Schenk
A SAR study on derivatives of 2-amino-1-benzyl-4,5-diphenyl-1H-pyrrole-3-carbonitrile 5a revealed that the 3-carbonitrile group, vicinal 4,5-diphenyl and N-benzyl side chains of the pyrrole are important for the inhibitory potencies of these compounds against members representing the three main subclasses of metallo-β-lactamases (MBLs), i.e. IMP-1 (representing the B1 subgroup), CphA (B2) and AIM-1 (B3). Coupling of 5a with a series of acyl chlorides and anhydrides led to the discovery of two N-acylamide derivatives, 10 and 11, as the two most potent IMP-1 inhibitors in this series...
June 3, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28607018/antibiotic-mediated-modulations-of-outer-membrane-vesicles-in-enterohemorrhagic-escherichia-coli-o104-h4-and-o157-h7
#13
Andreas Bauwens, Lisa Kunsmann, Helge Karch, Alexander Mellmann, Martina Bielaszewska
Ciprofloxacin, meropenem, fosfomycin, and polymyxin B strongly increase production of outer membrane vesicles (OMVs) in Escherichia coli O104:H4 and O157:H7. Ciprofloxacin also upregulates OMV-associated Shiga toxin 2a, the major virulence factor of these pathogens, whereas the other antibiotics increase OMV production without the toxin. Both these effects might worsen the clinical outcome of infections caused by Shiga toxin-producing E. coli Our data support the existing recommendations to avoid antibiotics for treatment of these infections...
June 12, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28605923/bacterial-sepsis-in-neonates-single-centre-study-in-a-neonatal-intensive-care-unit-in-bosnia-and-herzegovina
#14
Izeta Softić, Husref Tahirović, Vincenzo Di Ciommo, Cinzia Auriti
OBJECTIVE: The aim of the study was to evaluate the incidence, mortality, risk factors, aetiology and the susceptibility to antibiotics of the bacteria responsible for sepsis. MATERIAL AND METHODS: A single centre, prospective, observational study, involving 200 neonates admitted over 12 months to the NICU of the University Children's Hospital, Tuzla, Bosnia and Herzegovina. RESULTS: The crude incidence of all neonatal sepsis was 68.0% (136/200) and that of late-onset sepsis (LOS) was 48...
May 2017: Acta Medica Academica
https://www.readbyqxmd.com/read/28605515/fri-2-carbapenemase-producing-enterobacter-cloacae-complex-in-the-uk
#15
Danièle Meunier, Jacqueline Findlay, Michel Doumith, Daniel Godoy, Claire Perry, Rachel Pike, Firza Gronthoud, Theresa Shryane, Laurent Poirel, William Welfare, Neil Woodford, Katie L Hopkins
Objectives: Detection of rarer carbapenemases is challenging, as it requires molecular assays with comprehensive coverage or the use of phenotypic methods for the detection of carbapenemase activity. We describe a new class A carbapenemase, FRI-2, in an Enterobacter cloacae complex isolate following implementation of an in-house multiplex PCR for the detection of 'rare' class A carbapenemases. Methods: MICs were determined by agar dilution. A carbapenem-resistant E...
June 10, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28603609/antimicrobial-susceptibility-of-clostridium-difficile-isolated-in-thailand
#16
Papanin Putsathit, Monthira Maneerattanaporn, Pipat Piewngam, Daniel R Knight, Pattarachai Kiratisin, Thomas V Riley
BACKGROUND: Exposure to antimicrobials is the major risk factor associated with Clostridium difficile infection (CDI). Paradoxically, treatment of CDI with antimicrobials remains the preferred option. To date, only three studies have investigated the antimicrobial susceptibility of C. difficile from Thailand, two of which were published in the 1990s. This study aimed to investigate the contemporary antibiotic susceptibility of C. difficile isolated from patients in Thailand. METHODS: A collection of 105 C...
2017: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/28603118/carbapenem-resistant-acinetobacter-spp-restricted-the-therapeutic-alternatives
#17
Naheed Afshan, Benish Nawaz, Maliha Hamid
Carbapenem resistant Acinetobacter has appeared an organism of uncertain resistivity towards antimicrobial agents. Among non-fermenting bacterium Acinetobacter is the second-most-commonly-isolated organisms in human. The fast intensify of their resistance to antibiotics, especially global emergence and extend of Acinetobacter strains resistant to carbapenem more restricted the therapeutic alternatives. The importation of A. baumannii and subsequent presence in hospitals has been well documented. In this study we evaluate the resistivity of Acinetobacter against carbapenem antibiotics at Jinnah University for Women, Karachi...
January 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28596943/in-vitro-evaluation-of-the-colistin-carbapenem-combination-in-clinical-isolates-of-a-baumannii-using-the-checkerboard-etest-and-time-kill-curve-techniques
#18
Micheline A H Soudeiha, Elias A Dahdouh, Eid Azar, Dolla K Sarkis, Ziad Daoud
The worldwide increase in the emergence of carbapenem resistant Acinetobacter baumannii (CRAB) calls for the investigation into alternative approaches for treatment. This study aims to evaluate colistin-carbapenem combinations against Acinetobacter spp., in order to potentially reduce the need for high concentrations of antibiotics in therapy. This study was conducted on 100 non-duplicate Acinetobacter isolates that were collected from different patients admitted at Saint George Hospital-University Medical Center in Beirut...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28594635/epidemiology-of-carbapenem-resistant-klebsiella-pneumoniae-bloodstream-infections-in-a-chinese-children-s-hospital-predominance-of-new-delhi-metallo-%C3%AE-lactamase-1
#19
Fang Dong, Ye Zhang, Kaihu Yao, Jie Lu, Lingyun Guo, Shuang Lyu, Ying Yang, Yan Wang, Hongyan Zheng, Wenqi Song, Gang Liu
The spread of carbapenem-resistant Klebsiella pneumoniae (CRKp) has become a significant problem worldwide; however, relevant data in children are limited. We performed a retrospective study to better understand the epidemiology of CRKp bloodstream infections at Beijing Children's Hospital. A total of 164 K. pneumoniae strains were collected from blood cultures between January 2011 and September 2014, of which 52 (31.7%) were CRKp strains. All 52 CRKp strains were multidrug resistant; 46 (88.5%) and 49 (94...
June 8, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28583554/enterobacter-cloacae-related-necrotizing-fasciitis-after-peritoneal-dialysis-in-delayed-graft-function-a-case-report
#20
Y-M Choe, K-M Park, Y S Jeon, S G Cho, K C Hong, W Y Shin, J H Song
INTRODUCTION: Necrotizing fasciitis is an uncommon soft-tissue infection that involves the superficial fascia, subcutaneous fat, and deep fascia. Herein, we report the first case of Enterobacter cloacae-related necrotizing fasciitis after peritoneal dialysis in delayed graft function. CASE: A 58-year-old man, who was a hepatitis B-viral carrier and had atrial fibrillation, received cadaveric renal transplantation with peritoneal dialysis and encountered delayed graft function...
June 2017: Transplantation Proceedings
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