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meropenem use evaluation

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https://www.readbyqxmd.com/read/28792697/the-first-enterobacter-cloacae-co-producing-ndm-and-oxa-48-carbapenemases-and-interhospital-spread-of-oxa-48-and-ndm-producing-klebsiella-pneumoniae-in-turkey
#1
Demet Haciseyitoglu, Aysegul Dokutan, Ayham Abulaila, Fatma Erdem, Yasemin Cag, Serdar Ozer, Zerrin Aktas
BACKGROUND: The aim of this study was to investigate the occurrence of carbapenemase-producing Enterobacteriaceae. METHODS: A total of 54 carbapenem nonsusceptible Enterobacteriaceae (CRE) isolates were recovered from clinical samples sent to the Dr. Lutfi Kirdar Kartal Training and Research Hospital from the period 2011 through 2014. Forty-four isolates were Klebsiella pneumoniae (CRKP) and the other 10 were Enterobacter cloacae (CREC).The isolate identifications and antibiotic sensitivity tests were performed using a Vitek2 automatic system...
July 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28771141/risk-factors-and-molecular-mechanisms-associated-with-trimethoprim-sulfamethoxazole-resistance-in-stenotrophomonas-maltophilia-in-mexico
#2
Sandra Abril Herrera-Heredia, César Pezina-Cantú, Elvira Garza-González, Paola Bocanegra-Ibarias, Soraya Mendoza-Olazarán, Rayo Morfín-Otero, Adrián Camacho-Ortiz, Licet Villarreal-Treviño, Eduardo Rodríguez-Noriega, Laura Paláu-Davila, Héctor Jesús Maldonado-Garza, Samantha Flores-Treviño
PURPOSE: Stenotrophomonas maltophilia is a multidrug-resistant opportunistic pathogen causing an increasing number of nosocomial infections. Our aim was to evaluate the risk factors and mechanisms associated with trimethoprim-sulfamethoxazole (SXT) resistance in S. maltophilia infections in Mexico. METHODOLOGY: Clinical isolates and patients' demographic and clinical data were collected from February 2007 to August 2015 in two tertiary-care hospitals in Mexico. Antimicrobial susceptibility and analysis of sul and SmeABC and SmeDEF efflux pump overexpression were performed in all isolates...
August 4, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28760891/influence-of-beta-lactam-infusion-strategy-on-acute-kidney-injury
#3
Sarah E Cotner, W Cliff Rutter, Donna R Burgess, Katie L Wallace, Craig A Martin, David S Burgess
Background Limited literature is available assessing nephrotoxicity with prolonged beta-lactam infusions. This study compared the incidence of acute kidney injury (AKI) associated with a prolonged beta-lactam infusion (PI) or an intermittent infusion.Methods. This was a retrospective, matched cohort study at an academic medical center from July 2006 to September 2015. Adult patients who received piperacillin-tazobactam (TZP), cefepime (FEP), or meropenem (MEM) for at least 48 hours were evaluated. Patients were excluded for pre-existing renal dysfunction or pregnancy...
July 31, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28749392/evaluation-of-evidence-for-pharmacokinetics-pharmacodynamics-based-dose-optimization-of-antimicrobials-for-treating-gram-negative-infections-in-neonates
#4
REVIEW
Nusrat Shafiq, Samir Malhotra, Vikas Gautam, Harpreet Kaur, Pravin Kumar, Sourabh Dutta, Pallab Ray, Nilima A Kshirsagar
BACKGROUND & OBJECTIVES: Neonates present a special subgroup of population in whom optimization of antimicrobial dosing can be particularly challenging. Gram-negative infections are common in neonates, and inpatient treatment along with critical care is needed for the management of these infections. Dosing recommendations are often extrapolated from evidence generated in older patient populations. This systematic review was done to identify the knowledge gaps in the pharmacokinetics-pharmacodynamics (PK-PD)-based optimized dosing schedule for parenteral antimicrobials for Gram-negative neonatal infections...
March 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28748397/activity-of-the-novel-siderophore-cephalosporin-cefiderocol-against-multidrug-resistant-gram-negative-pathogens
#5
J Dobias, V Dénervaud-Tendon, L Poirel, P Nordmann
The novel siderophore cephalosporin cefiderocol (S-649266) with potent activity against Gram-negative pathogens was recently developed (Shionogi & Co., Ltd.). Here, we evaluated the activity of this new molecule and comparators against a collection of previously characterized Gram-negative isolates using broth microdilution panels. A total of 753 clinical multidrug-resistant Gram-negative isolates collected from hospitals worldwide were tested against cefiderocol and antibiotic comparators (ceftolozane-tazobactam [CT], meropenem [MEM], ceftazidime [CAZ], ceftazidime-avibactam [CZA], colistin [CST], aztreonam [ATM], amikacin [AMK], ciprofloxacin [CIP], cefepime [FEP], and tigecycline [TGC]) for their susceptibility...
July 26, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28742000/high-prevalence-of-multidrug-resistant-escherichia-coli-isolates-from-children-with-and-without-diarrhoea-and-their-susceptibility-to-the-antibacterial-activity-of-extracts-fractions-of-fruits-native-to-mexico
#6
Magdalena de Jesús Uribe-Beltrán, Yesmi Patricia Ahumada-Santos, Sylvia Páz Díaz-Camacho, Carlos Alberto Eslava-Campos, Jesús Ernesto Reyes-Valenzuela, María Elena Báez-Flores, Ignacio Osuna-Ramírez, Francisco Delgado-Vargas
PURPOSE: This paper aims to evaluate the antimicrobial resistance of Esherichia coli isolates from children under 5 years old, with and without diarrhoea, who were hospital outpatients in Culiacan, Sinaloa, Mexico. It also looks at the antimicrobial activity of fruit extracts against selected multidrug-resistant (MDR) E. coli strains. METHODOLOGY: A total of 205 E. coli isolates from stool samples were collected from 94 children under 5 years old who were outpatients from two hospitals in the city of Culiacan, Sinaloa, Mexico, during the autumn/winter of 2003/04; their resistance profiles to 19 commercial antimicrobials were investigated using the Kirby-Bauer method...
July 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28739780/multicenter-evaluation-of-ceftazidime-avibactam-and-ceftolozane-tazobactam-inhibitory-activity-against-meropenem-non-susceptible-p-aeruginosa-from-blood-respiratory-tract-and-wounds
#7
Mordechai Grupper, Christina Sutherland, David P Nicolau
The recent escalation of carbapenem-resistant Pseudomonas aeruginosa has been recognized globally and threatens to erode the widespread clinical utility of this class of compounds for this prevalent healthcare associate pathogen. Herein, we compared the in-vitro inhibitory activity of ceftazidime-avibactam and ceftolozane-tazobactam against 290 meropenem non-susceptible Pseudomonas aeruginosa non-duplicate clinical isolates from 34 US hospitals using reference broth microdilution methods. Ceftazidime-avibactam and ceftolozane-tazobactam were active, with ceftolozane-tazobactam having significantly higher inhibitory activity than ceftazidime-avibactam...
July 24, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28735046/ceftolozane-tazobactam-activity-against-drug-resistant-enterobacteriaceae-and-pseudomonas-aeruginosa-causing-healthcare-associated-infections-in-australia-and-new-zealand-report-from-an-antimicrobial-surveillance-program-2013-2015
#8
M A Pfaller, D Shortridge, H S Sader, R K Flamm, M Castanheira
OBJECTIVES: To evaluate the in vitro activity of ceftolozane-tazobactam and comparator agents tested against isolates of Enterobacteriaceae and Pseudomonas aeruginosa from patients in Australia and New Zealand with healthcare-associated infection. METHODS: A total of 1459 gram-negative organisms (440 P. aeruginosa and 1019 Enterobacteriaceae) were consecutively collected from 11 medical centers located in Australia and New Zealand. The organisms were tested for susceptibility by broth microdilution methods as described by the CLSI M07-A10 document and the results interpreted according to EUCAST and CLSI breakpoint criteria...
July 19, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28716360/comparison-of-synergism-between-colistin-fosfomycin-and-tigecycline-against-extended-spectrum-%C3%AE-lactamase-producing-klebsiella-pneumoniae-isolates-or-with-carbapenem-resistance
#9
Yee-Huang Ku, Chi-Chung Chen, Mei-Feng Lee, Yin-Ching Chuang, Hung-Jen Tang, Wen-Liang Yu
PURPOSE: To investigate the synergistic and bactericidal effects of antimicrobial combinations of any two of colistin, fosfomycin and tigecycline against the nine extended-spectrum β-lactamase (ESBL)-producing Klebsiella pneumoniae (KP) clinical isolates, including 4 carbapenem-susceptible strains and five imipenem and/or meropenem-resistant strains. METHODS: In vitro synergism and bactericidal activity of combination of colistin, fosfomycin and tigecycline were evaluated by time-kill studies in standard inoculum of bacterial densities of a suspension containing 5 × 10(5) CFU/mL by using 1/2× MIC for each alone, and both 1/2× and 1/4× MIC for any two drugs...
July 6, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28711560/interaction-of-carbapenems-and-%C3%AE-lactamase-inhibitors-towards-ctx-m-15-and-ctx-m-15-g238c-mutant
#10
Alessia Sabatini, Fabrizia Brisdelli, Giuseppe Celenza, Francesca Marcoccia, Martina Colapietro, María M Tavío, Alessandra Piccirilli, Gianfranco Amicosante, Mariagrazia Perilli
OBJECTIVES: The aim of this study was to evaluate the role of residue 238 in CTX-M-15 and CTX-M-15(G238C) mutant with respect to carbapenems and various β-lactamase inhibitors. METHODS: A CTX-M-15(G238C) laboratory mutant was generated by site-directed mutagenesis from CTX-M-15 enzyme by replacing glycine 238 with cysteine. Thiol titration and p-chloromercuribenzoate (PCMB) inactivation assays were used to ascertain the presence of a disulfide bridge in the active site of CTX-M-15(G238C)...
July 12, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28706882/distribution-of-the-strains-of-multidrug-resistant-extensively-drug-resistant-and-pandrug-resistant-pseudomonas-aeruginosa-isolates-from-burn-patients
#11
Hajieh Ghasemian Safaei, Sharareh Moghim, Bahram Nasr Isfahani, Hossein Fazeli, Farkhondeh Poursina, Sima Yadegari, Pourya Nasirmoghadas, Seyed Abolfazl Hosseininassab Nodoushan
BACKGROUND: Pseudomonas aeruginosa is an opportunistic and Gram-negative pathogen that is used as the most important factor in burn wound infections, and due to the rapid acquisition of multidrug resistance (MDR), it causes high mortality rates in these sectors. Thus, diagnosis and assessment of antibiotic resistance patterns are very important in these patients. The aim of this study was to evaluate antibiotic resistance pattern and determining P. aeruginosa MDR. MATERIALS AND METHODS: In this study, phenotypic, biochemical, and polymerase chain reaction tests were used to identify P...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28705666/in-vitro-activity-of-ceftolozane-tazobactam-against-pseudomonas-aeruginosa-and-enterobacteriaceae-isolates-recovered-from-hospitalized-patients-in-germany
#12
Harald Seifert, Barbara Körber-Irrgang, Michael Kresken
To evaluate the activity of ceftolozane/tazobactam in comparison with other broad-spectrum antimicrobials against Pseudomonas aeruginosa and Enterobacteriaceae, 497 non-duplicate P. aeruginosa and 802 Enterobacteriaceae clinical isolates were consecutively collected during the period from September 2014 to April 2015 from patients in Germany with bloodstream, lower respiratory tract, intraabdominal or urinary tract infections. Antimicrobial susceptibility testing was performed by broth microdilution. Results were interpreted according to EUCAST criteria...
July 10, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28701170/antimicrobial-susceptibility-among-gram-positive-and-gram-negative-organisms-collected-from-the-latin-american-region-between-2004-and-2015-as-part-of-the-tigecycline-evaluation-and-surveillance-trial
#13
Silvio Vega, Michael J Dowzicky
BACKGROUND: The in vitro activity of tigecycline and comparator agents was evaluated against Gram-positive and Gram-negative isolates collected in Latin American centers between 2004 and 2015 as part of the Tigecycline Evaluation and Surveillance Trial (T.E.S.T.) global surveillance study. METHODS: Minimum inhibitory concentrations (MICs) were determined using the broth microdilution methodology according to the Clinical and Laboratory Standards Institute (CLSI) guidelines...
July 12, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28700141/zero-and-second-derivative-synchronous-fluorescence-spectroscopy-for-the-quantification-of-two-non-classical-%C3%AE-lactams-in-pharmaceutical-vials-application-to-stability-studies
#14
Eman S Elzanfaly, Rania M Youssif, Nahla N Salama, Ahmed S Fayed, Hassan A M Hendawy, Maissa Y Salem
The formation of metal chelates with various ligands may lead to the production of fluorescent chelates or enhance the fluorescence of the chelating agent. This paper describes two sensitive, selective and computer-solved methods, namely, zero order (SF) and second-derivative synchronous spectrofluorimetry (SDSFS) for nano-quantitation of two carbapenems; meropenem (MP) and ertapenem (EP). The methods are based on the chelation of MP with Tb(3+) and EP with Zr(4+) in buffered organic medium at pH 4.0 to produce fluorescent chelates...
July 12, 2017: Luminescence: the Journal of Biological and Chemical Luminescence
https://www.readbyqxmd.com/read/28696235/evaluation-of-combination-drug-therapy-for-treatment-of-antibiotic-resistant-inhalation-anthrax-in-a-murine-model
#15
H S Heine, S V Shadomy, A E Boyer, L Chuvala, R Riggins, A Kesterson, J Myrick, J Craig, M G Candela, J R Barr, K Hendricks, W A Bower, H Walke, G L Drusano
Bacillus anthracis is considered a likely agent to be used as a bioweapon and use of a strain resistance to the first-line antimicrobial treatments is a concern. We determined treatment efficacy against a ciprofloxacin-resistant (C(r)) strain of B. anthracis (C(r) Ames) in a murine inhalational anthrax model. Ten groups of 46 BALB/c mice were exposed by inhalation to 7-35 LD50 of B. anthracis C(r) Ames spores. Commencing at 36 hours (h) post-exposure, groups were administered intraperitoneal doses of sterile water for injections (SWI) and ciprofloxacinalone (control groups), or ciprofloxacin combined with two antimicrobials including meropenem/linezolid, meropenem/clindamycin, meropenem/rifampin, meropenem/doxycycline, penicillin/linezolid, penicillin/doxycycline, rifampin/linezolid, or rifampin/clindamycin at appropriate dosing intervals(6 or 12 hours) for the respective antibiotics...
July 10, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28689923/in-vitro-activity-of-ceftolozane-tazobactam-in-combination-with-other-classes-of-antibacterial-agents
#16
Cédric Jacqueline, Karen Howland, Laurent Chesnel
OBJECTIVES: Combination antibiotic therapy has been used successfully to treat some patients with bacterial infections. However, although certain combinations may result in beneficial synergistic activity, others may produce antagonistic effects resulting in poor treatment outcomes. Ceftolozane/tazobactam is an antibacterial agent with potent activity against Pseudomonas aeruginosa and many other Gram-negative pathogens, including extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae...
July 6, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28687555/visual-compatibility-of-colistin-injection-with-other-antibiotics-during-simulated-y-site-administration
#17
Wasan Katip
PURPOSE: The compatibility of colistin with other antibiotics at concentrations commonly used in intensive care units was studied. METHODS: A vial of colistin was dissolved in sterile water for injection. The reconstituted solution (colistin base 75 mg/mL) was then diluted in 0.9% sodium chloride injection in polyvinyl chloride (PVC) infusion bag to give a total volume of 100 mL (colistin 1.5 mg/mL). Secondary drugs, including cefoperazone-sulbactam, ceftazidime, ertapenem, fosfomycin, imipenem-cilastatin, linezolid, meropenem, piperacillin-tazobactam, and vancomycin, were reconstituted if necessary and then diluted in 0...
July 15, 2017: American Journal of Health-system Pharmacy: AJHP
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
#18
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/28605923/bacterial-sepsis-in-neonates-single-centre-study-in-a-neonatal-intensive-care-unit-in-bosnia-and-herzegovina
#19
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/28596943/in-vitro-evaluation-of-the-colistin-carbapenem-combination-in-clinical-isolates-of-a-baumannii-using-the-checkerboard-etest-and-time-kill-curve-techniques
#20
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
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