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Journal of Antimicrobial Chemotherapy

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https://www.readbyqxmd.com/read/28333342/activity-of-faropenem-with-and-without-rifampicin-against-mycobacterium-tuberculosis-evaluation-in-a-whole-blood-bactericidal-activity-trial
#1
Meera Gurumurthy, Rupangi Verma, Claire M Naftalin, Kim Hor Hee, Qingshu Lu, Kin Hup Tan, Simi Issac, Wenwei Lin, Angelia Tan, Kok-Yong Seng, Lawrence Soon-U Lee, Nicholas I Paton
Background: Faropenem has in vitro activity against Mycobacterium tuberculosis (Mtb) and shows synergy with rifampicin. We tested this in a whole-blood bactericidal activity (WBA) trial. Methods: We randomized healthy volunteers to receive a single oral dose of faropenem (600 mg) with amoxicillin/clavulanic acid (500/125 mg) ( n  =   8), rifampicin (10 mg/kg) ( n  =   14) or the combination rifampicin + faropenem + amoxicillin/clavulanic acid ( n  =   14)...
March 18, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333334/a-mixed-method-evaluation-of-peer-education-workshops-for-school-aged-children-to-teach-about-antibiotics-microbes-and-hygiene
#2
Vicki L Young, Amy Cole, Donna M Lecky, Dennis Fettis, Beth Pritchard, Neville Q Verlander, Charlotte V Eley, Cliodna A M McNulty
Background: Delivering health topics in schools through peer education is known to be beneficial for all students involved. In this study, we have evaluated a peer-education workshop that aims to educate primary and secondary school students on hygiene, the spread of infection and antibiotics. Methods: Four schools in south-west England, in a range of localities, took part in peer-education workshops, with students completing before, after and knowledge-retention questionnaires...
March 18, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333332/wck-5222-cefepime-zidebactam-antimicrobial-activity-tested-against-gram-negative-organisms-producing-clinically-relevant-%C3%AE-lactamases
#3
Helio S Sader, Paul R Rhomberg, Robert K Flamm, Ronald N Jones, Mariana Castanheira
Background: Zidebactam is a β-lactam enhancer antibiotic with a dual mechanism of action involving binding to Gram-negative PBP2 and β-lactamase inhibition. Cefepime combined with zidebactam (WCK 5222) is under clinical development for treatment of Gram-negative infections. Objectives: To evaluate the in vitro activities of cefepime and zidebactam separately and combined at 1:1 and 2:1 ratios when tested against Gram-negative organisms producing the most clinically relevant β-lactamase types...
March 18, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333323/high-ceftazidime-hydrolysis-activity-and-porin-ompk35-deficiency-contribute-to-the-decreased-susceptibility-to-ceftazidime-avibactam-in-kpc-producing-klebsiella-pneumoniae
#4
Zhen Shen, Baixing Ding, Meiping Ye, Peng Wang, Yingmin Bi, Shi Wu, Xiaogang Xu, Qinglan Guo, Minggui Wang
Objectives: To investigate mechanisms for the decreased susceptibility to ceftazidime/avibactam in KPC-producing Klebsiella pneumoniae (KPC-KP). Methods: A total of 24 isolates, 8 each with ceftazidime/avibactam MICs of 4-8, 1-2 and ≤0.5 mg/L, were randomly selected from 214 clinical isolates of KPC-KP, and the β-lactamase hydrolysis activity and porin expression profiles were determined. Plasmid profile and relative expression and copy number of the bla KPC gene were also analysed...
March 15, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333311/citrobacter-braakii-carrying-plasmid-borne-mcr-1-colistin-resistance-gene-from-ready-to-eat-food-from-a-market-in-the-chaco-region-of-bolivia
#5
Samanta Sennati, Vincenzo Di Pilato, Eleonora Riccobono, Tiziana Di Maggio, Ana Liz Villagran, Lucia Pallecchi, Alessandro Bartoloni, Gian Maria Rossolini, Tommaso Giani
No abstract text is available yet for this article.
March 15, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333310/dihydroorotate-dehydrogenase-inhibitor-f901318-has-potent-in-vitro-activity-against-scedosporium-species-and-lomentospora-prolificans
#6
Nathan P Wiederhold, Derek Law, Michael Birch
Background: Scedosporium species and Lomentospora prolificans are increasing causes of invasive infections in immunocompromised hosts and many isolates are resistant to available antifungals. Our objective was to assess the in vitro potency of F901318, a member of the orotomide class of antifungals, against Scedosporium species and L. prolificans . Methods: The in vitro potency of F901318 was evaluated against 66 Scedosporium and 7 L. prolificans clinical isolates using the CLSI M38-A2 reference standard...
March 15, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333303/efficacy-of-elvitegravir-cobicistat-emtricitabine-tenofovir-disoproxil-fumarate-as-treatment-for-primary-or-recent-hiv-infection-authors-response
#7
Silvia Nozza, Andrea Poli, Marco Ripa, Laura Galli, Stefania Chiappetta, Vincenzo Spagnuolo, Cristina Rovelli, Adriano Lazzarin, Antonella Castagna, Giuseppe Tambussi
No abstract text is available yet for this article.
March 14, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333302/outcomes-of-multisite-antimicrobial-stewardship-programme-implementation-with-a-shared-clinical-decision-support-system
#8
Stuart E Bond, Adriana J Chubaty, Suman Adhikari, Spiros Miyakis, Craig S Boutlis, Wilfred W Yeo, Marijka J Batterham, Cara Dickson, Brendan J McMullan, Mona Mostaghim, Samantha Li-Yan Hui, Kate R Clezy, Pamela Konecny
Background: Studies evaluating antimicrobial stewardship programmes (ASPs) supported by computerized clinical decision support systems (CDSSs) have predominantly been conducted in single site metropolitan hospitals. Objectives: To examine outcomes of multisite ASP implementation supported by a centrally deployed CDSS. Methods: An interrupted time series study was conducted across five hospitals in New South Wales, Australia, from 2010 to 2014...
March 14, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333320/cross-resistance-to-lincosamides-streptogramins-a-and-pleuromutilins-in-streptococcus-agalactiae-isolates-from-the-usa
#9
Paulina A Hawkins, Caitlin S Law, Benjamin J Metcalf, Sopio Chochua, Delois M Jackson, Lars F Westblade, Robert Jerris, Bernard W Beall, Lesley McGee
Background: Streptococcus agalactiae (Group B Streptococcus, GBS) is a leading cause of meningitis, sepsis and pneumonia in neonates in the United States. GBS also causes invasive disease in older infants, pregnant women, children and young adults with underlying medical conditions, and older adults. Resistance to lincosamides in the absence of erythromycin resistance is rare in GBS, but has been previously reported in clinical isolates, both on its own or in combination with resistance to streptogramins A and pleuromutilins (L/LSA/LSAP phenotypes)...
March 13, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333298/occurrence-and-molecular-characteristics-of-esbl-ampc-producing-escherichia-coli-in-faecal-samples-from-horses-in-an-equine-clinic
#10
Ilias Apostolakos, Eelco Franz, Angela H A M van Hoek, Alice Florijn, Christiaan Veenman, Marianne M Sloet-van Oldruitenborgh-Oosterbaan, Cindy Dierikx, Engeline van Duijkeren
Objectives: To investigate the occurrence and characteristics of ESBL/AmpC-producing Escherichia coli in faecal samples from horses at one equine clinic in the Netherlands. Methods: A total of 91 horses, including residents and patients, were sampled. ESBL/AmpC-producing E. coli were identified by a combination disc diffusion test. Phylogenetic groups and MLST were determined. ESBL/AmpC genes were analysed using PCR and sequencing. Plasmids were characterized by transformation and PCR-based replicon typing...
March 13, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333295/drug-resistance-in-antiretroviral-naive-children-newly-diagnosed-with-hiv-1-in-manaus-amazonas
#11
Solange Dourado de Andrade, Meritxell Sabidó, Wuelton Marcelo Monteiro, Adele Schwartz Benzaken, Amilcar Tanuri
Objectives: To determine the prevalence of drug resistance mutations (DRM), the prevalence of drug susceptibility [transmitted drug resistance (TDR)] and the prevalence of HIV-1 variants among treatment-naive HIV-infected children in Manaus, Amazonas state, Brazil. Methods: Children born to HIV-infected mothers and diagnosed with HIV in an HIV reference service centre and with available pol sequence between 2010 and 2015 prior to antiretroviral initiation were included...
March 13, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333294/antibiotic-consumption-by-new-zealand-children-exposure-is-near-universal-by-the-age-of-5%C3%A2-years
#12
Mark R Hobbs, Cameron C Grant, Stephen R Ritchie, Carol Chelimo, Susan M B Morton, Sarah Berry, Mark G Thomas
Background: Increasing concerns about antibiotic resistance and microbiome disruption have stimulated interest in describing antibiotic consumption in young children. Young children are an age group for whom antibiotics are frequently prescribed. Objectives: To describe community antibiotic dispensing during the first 5 years of life in a large, socioeconomically and ethnically diverse cohort of children, and to determine how antibiotic dispensing varied between population subgroups...
March 13, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333283/rch51-a-multiply-antibiotic-resistant-acinetobacter-baumannii-st103ip-isolate-carries-resistance-genes-in-three-plasmids-including-a-novel-potentially-conjugative-plasmid-carrying-oxa235-in-transposon-tn6252
#13
Mohammad Hamidian, Steven J Nigro, Rebecca M Hartstein, Ruth M Hall
Objectives: To determine the identity and context of genes conferring antibiotic resistance in a sporadic multiply antibiotic-resistant Acinetobacter baumannii recovered at Royal Children's Hospital, Brisbane. Methods: The antibiotic resistance phenotype for 23 antibiotics was determined using disc diffusion or MIC determination. The whole-genome sequence of RCH51 was determined using the Illumina HiSeq platform. Antibiotic resistance determinants were identified using ResFinder...
March 13, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333363/evaluation-of-the-%C3%AE-carba%C3%A2-test-a-colorimetric-test-for-the-rapid-detection-of-carbapenemase-activity-in-gram-negative-bacilli
#14
Sandrine Bernabeu, Laurent Dortet, Thierry Naas
Objectives: There is an urgent need for accurate and fast diagnostic tests to identify carbapenemase-producing bacteria. Here, we have evaluated a novel colorimetric test (the β-CARBA™ test; Bio-Rad) to detect carbapenemase-producing Gram-negative bacilli from cultured colonies. Methods: The performance of the β-CARBA™ test was compared with that of the Carba NP test (or the CarbAcineto NP test) and RAPIDEC ® CARBA NP (bioMérieux) using a collection of 290 isolates with characterized β-lactamase content...
March 10, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333355/wgs-to-predict-antibiotic-mics-for-neisseria-gonorrhoeae
#15
David W Eyre, Dilrini De Silva, Kevin Cole, Joanna Peters, Michelle J Cole, Yonatan H Grad, Walter Demczuk, Irene Martin, Michael R Mulvey, Derrick W Crook, A Sarah Walker, Tim E A Peto, John Paul
Background: Tracking the spread of antimicrobial-resistant Neisseria gonorrhoeae is a major priority for national surveillance programmes. Objectives: We investigate whether WGS and simultaneous analysis of multiple resistance determinants can be used to predict antimicrobial susceptibilities to the level of MICs in N. gonorrhoeae. Methods: WGS was used to identify previously reported potential resistance determinants in 681 N. gonorrhoeae isolates, from England, the USA and Canada, with phenotypes for cefixime, penicillin, azithromycin, ciprofloxacin and tetracycline determined as part of national surveillance programmes...
March 10, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333353/evolution-of-blood-associated-hiv-1-dna-levels-after-48-weeks-of-switching-to-atazanavir-ritonavir-lamivudine-dual-therapy-versus-continuing-triple-therapy-in-the-randomized-atlas-m-trial
#16
Francesca Lombardi, Simone Belmonti, Eugenia Quiros-Roldan, Alessandra Latini, Antonella Castagna, Gabriella D'Ettorre, Roberta Gagliardini, Massimiliano Fabbiani, Roberto Cauda, Andrea De Luca, Simona Di Giambenedetto
Objectives: The AtLaS-M randomized trial showed that in patients with HIV-1 RNA <50 copies/mL on atazanavir/ritonavir + two NRTIs, switching to a dual therapy with atazanavir/ritonavir+lamivudine had superior efficacy as compared with continuing the previous triple therapy. This substudy was designed to evaluate at 48 weeks the impact of the dual therapy versus the three-drug atazanavir/ritonavir-based therapy on the HIV-1 cellular reservoir as reflected by the quantification of blood-associated HIV-1 DNA levels...
March 10, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333285/therapeutic-drug-monitoring-of-boosted-pis-in-hiv-positive-patients-undetectable-plasma-concentrations-and-risk-of-virological-failure
#17
A Calcagno, N Pagani, A Ariaudo, G Arduino, C Carcieri, A D'Avolio, L Marinaro, M C Tettoni, L Trentini, G Di Perri, S Bonora
Background: Therapeutic drug monitoring (TDM) of antiretroviral drugs is performed in selected HIV-positive patients. The aim of this study was to estimate the prevalence of undetectable plasma concentrations of ritonavir and boosted PIs and to evaluate the association between those and the 48 week risk of virological failure. Methods: A TDM registry study and a retrospective follow-up study were conducted. Plasma concentrations were measured through validated methods...
March 10, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333331/multiregional-dissemination-of-kpc-producing-klebsiella-pneumoniae-st258-st512-genotypes-in-poland-2010-14
#18
Anna Baraniak, Radoslaw Izdebski, Dorota Zabicka, Katarzyna Bojarska, Sandra Górska, Elzbieta Literacka, Janusz Fiett, Waleria Hryniewicz, Marek Gniadkowski
Objectives: In 2008-09, the KPC carbapenemase epidemiology in Poland was dominated by a Klebsiella pneumoniae ST258 KPC-2 outbreak in Warsaw and its administrative region. The aim of this study was to analyse the situation in 2010-14, with a focus on new outbreaks in other parts of the country. Methods: KPCs were detected in all suspected isolates by PCR. The detailed study was performed on 173 isolates from 2010 to 2012, and included PFGE and MLST, PCR identification of K...
March 9, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333284/revisiting-the-mutant-prevention-concentration-to-guide-dosing-in-childhood-tuberculosis
#19
Devan Jaganath, H Simon Schaaf, Peter R Donald
The mutant prevention concentration (MPC) is a well-known concept in the chemotherapy of many bacterial infections, but is seldom considered in relation to tuberculosis (TB) treatment, as the required concentrations are generally viewed as unachievable without undue toxicity. Early studies revealed single mutations conferring high MICs of first- and second-line anti-TB agents; however, the growing application of genomics and quantitative drug susceptibility testing in TB suggests a wide range of MICs often determined by specific mutations and strain type...
March 9, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333277/antimicrobial-resistance-in-staphylococcus-pseudintermedius-and-the-molecular-epidemiology-of-methicillin-resistant-s-pseudintermedius-in-small-animals-in-finland
#20
Thomas Grönthal, Marjut Eklund, Katariina Thomson, Heli Piiparinen, Tarja Sironen, Merja Rantala
No abstract text is available yet for this article.
March 8, 2017: Journal of Antimicrobial Chemotherapy
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