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Journal of Antimicrobial Chemotherapy

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https://www.readbyqxmd.com/read/28431096/a-new-rapid-resazurin-based-microdilution-assay-for-antimicrobial-susceptibility-testing-of-neisseria-gonorrhoeae
#1
Sunniva Foerster, Valentino Desilvestro, Lucy J Hathaway, Christian L Althaus, Magnus Unemo
Objectives: Rapid, cost-effective and objective methods for antimicrobial susceptibility testing of Neisseria gonorrhoeae would greatly enhance surveillance of antimicrobial resistance. Etest, disc diffusion and agar dilution methods are subjective, mostly laborious for large-scale testing and take ∼24 h. We aimed to develop a rapid broth microdilution assay using resazurin (blue), which is converted into resorufin (pink fluorescence) in the presence of viable bacteria. Methods: The resazurin-based broth microdilution assay was established using 132 N...
April 19, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28430992/identifying-practice-related-factors-for-high-volume-prescribers-of-antibiotics-in-danish-general-practice
#2
Rune Aabenhus, Volkert Siersma, Håkon Sandholdt, Rasmus Køster-Rasmussen, Malene Plejdrup Hansen, Lars Bjerrum
Objectives: In Denmark, general practice is responsible for 75% of antibiotic prescribing in the primary care sector. We aimed to identify practice-related factors associated with high prescribers, including prescribers of critically important antibiotics as defined by WHO, after accounting for case mix by practice. Methods: We performed a nationwide register-based survey of antibiotic prescribing in Danish general practice from 2012 to 2013. The unit of analysis was the individual practice...
April 19, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28419314/adverse-drug-reactions-during-drug-resistant-tb-treatment-in-high-hiv-prevalence-settings-a-systematic-review-and-meta-analysis
#3
Kathryn Schnippel, Cynthia Firnhaber, Rebecca Berhanu, Liesl Page-Shipp, Edina Sinanovic
Objectives: To estimate the prevalence of adverse drug reactions or events (ADR) during drug-resistant TB (DR-TB) treatment in the context of settings with high HIV prevalence (at least 20% of patients). Methods: We conducted a systematic review and meta-analysis of articles in PubMed and Scopus. Pooled proportions of patients experiencing adverse events and relative risk with 95% CI were calculated. Results: The search yielded 24 studies, all observational cohorts...
April 16, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28419277/prevention-of-tb-using-rifampicin-plus-isoniazid-reduces-nevirapine-concentrations-in-hiv-exposed-infants
#4
Helen McIlleron, Paolo Denti, Silvia Cohn, Fildah Mashabela, Jennifer D Hoffmann, Saba Shembe, Regina Msandiwa, Lubbe Wiesner, Sithembiso Velaphi, Sanjay G Lala, Richard E Chaisson, Neil Martinson, Kelly E Dooley
Background: Newborns of HIV-infected mothers are given daily doses of nevirapine to prevent HIV-1 acquisition. Infants born to mothers with TB should also receive TB preventive therapy. TB preventive regimens include isoniazid for 6 months or rifampicin plus isoniazid for 3 months (RH preventive therapy). The effect of concomitant RH preventive therapy on nevirapine concentrations in infants is unknown. Patients and methods: Tshepiso was a prospective case-control cohort study of pregnant HIV-infected women with and without TB whose newborn infants received standard doses of nevirapine for HIV prophylaxis...
April 16, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28419270/raltegravir-plus-lamivudine-as-maintenance-therapy-in-suppressed-hiv-1-infected-patients-in-real-life-settings
#5
Giulia Cucchetto, Massimiliano Lanzafame, Stefano Nicolè, Emanuela Lattuada, Leonardo Calza, Ercole Concia
No abstract text is available yet for this article.
April 16, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28419236/studying-the-effect-of-administration-route-and-treatment-dose-on-the-selection-of-enrofloxacin-resistance-in-commensal-escherichia-coli-in-broilers
#6
Ilias Chantziaras, Annemieke Smet, Freddy Haesebrouck, Filip Boyen, Jeroen Dewulf
Objectives: Factors potentially contributing to fluoroquinolone resistance selection in commensal Escherichia coli strains in poultry were studied through a series of in vivo experiments. The effect of the initial prevalence of enrofloxacin resistance in the E. coli gut microbiota, effect of the bacterial fitness of the enrofloxacin-resistant strain and effect of treatment with enrofloxacin (effect of dose and effect of route of administration) were assessed. Methods: Four in vivo studies with broiler chickens were performed...
April 16, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28407075/once-daily-atazanavir-cobicistat-and-darunavir-cobicistat-exposure-over-72%C3%A2-h-post-dose-in-plasma-urine-and-saliva-contribution-to-drug-pharmacokinetic-knowledge
#7
Emilie R Elliot, Alieu Amara, Nicole Pagani, Laura Else, Graeme Moyle, Alex Schoolmeesters, Chris Higgs, Saye Khoo, Marta Boffito
Background: We investigated the pharmacokinetics (PK) of atazanavir/cobicistat and darunavir/cobicistat once daily over 72 h following drug intake cessation in plasma, saliva and urine. Methods: Healthy volunteers received a fixed-dose combination of 300/150 mg of atazanavir/cobicistat once daily for 10 days, followed by a 10 day washout period and then a fixed-dose combination of 800/150 mg of darunavir/cobicistat once daily for 10 days. Full PK profiles were assessed for each phase for 72 h following day 10 and parameters determined to the last measurable concentration in plasma, saliva and urine by non-compartmental methods...
April 12, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28407074/comment-on-emergence-and-molecular-characterization-of-haemophilus-influenzae-harbouring-mef-a
#8
Christopher T Atkinson, Dale A Kunde, Stephen G Tristram
No abstract text is available yet for this article.
April 12, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28407066/emergence-and-molecular-characterization-of-haemophilus-influenzae-harbouring-mef-a-authors-response
#9
Shoji Seyama, Takeaki Wajima, Masae Suzuki, Masanobu Ushio, Takeshi Fujii, Norihisa Noguchi
No abstract text is available yet for this article.
April 12, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28402500/evaluation-of-the-aid-carbapenemase-line-probe-assay-for-rapid-detection-and-identification-of-carbapenemase-genes-in-gram-negative-bacilli
#10
Guido V Bloemberg, Andrea Braun-Kiewnick, Jan Tedrup, Carla Meijerink, Elena Durer, Claudia Ritter, Peter M Keller, Michael Hombach
Objectives: This study evaluated the AID carbapenemase line probe assay (LPA) for the detection and identification of carbapenem resistance genes in Enterobacteriaceae and other Gram-negative bacilli (GNB) using bacterial cultures and DNA extracts directly from patient urine samples. Methods: The AID carbapenemase LPA detects 13 different carbapenemase genes. Test probe accuracy was verified for using clinical Enterobacteriaceae isolates harbouring bla KPC , bla VIM , bla NDM , bla GIM , bla AIM , bla SPM , bla IMP and bla OXA-48 and a well-characterized set of Escherichia coli DH5α strains transformed with the vector plasmid pUC57- kan harbouring bla BIC , bla SIM , bla DIM , bla IMI-3 , bla IMI-1 and bla NMC-A ...
April 11, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28402558/effect-of-cadexomer-iodine-on-the-microbial-load-and-diversity-of-chronic-non-healing-diabetic-foot-ulcers-complicated-by-biofilm-in-vivo
#11
M Malone, K Johani, S O Jensen, I B Gosbell, H G Dickson, S McLennan, H Hu, K Vickery
Objectives: The performance of cadexomer iodine was determined against microbial populations from chronic non-healing diabetic foot ulcers (DFUs) complicated by biofilm in vivo , using molecular, microscopy and zymography methods. Methods: Chronic non-healing DFUs due to suspected biofilm involvement were eligible for enrolment. DNA sequencing and real-time quantitative PCR was used to determine the microbial load and diversity of tissue punch biopsies obtained pre- and post-treatment...
April 10, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28387865/strengthening-hiv-therapy-and-care-in-rural-tanzania-affects-rates-of-viral-suppression
#12
Alex J Ntamatungiro, Lukas Muri, Tracy R Glass, Stefan Erb, Manuel Battegay, Hansjakob Furrer, Christoph Hatz, Marcel Tanner, Ingrid Felger, Thomas Klimkait, Emilio Letang
Objectives: To assess viral suppression rates, to assess prevalence of acquired HIV drug resistance and to characterize the spectrum of HIV-1 drug resistance mutations (HIV-DRM) in HIV-1-infected patients in a rural Tanzanian HIV cohort. Methods: This was a cross-sectional study nested within the Kilombero and Ulanga Antiretroviral Cohort. Virological failure was defined as HIV-1 RNA ≥50 copies/mL. Risk factors associated with virological failure and with the development of HIV-DRM were assessed using logistic regression...
April 6, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28387862/examination-of-bedaquiline-and-linezolid-resistant-mycobacterium-tuberculosis-isolates-from-the-moscow-region
#13
Danila V Zimenkov, Elena Yu Nosova, Elena V Kulagina, Olga V Antonova, Liaisan R Arslanbaeva, Alexandra I Isakova, Ludmila Yu Krylova, Irina V Peretokina, Marina V Makarova, Svetlana G Safonova, Sergey E Borisov, Dmitry A Gryadunov
Objectives: To study the isolates with acquired resistance to bedaquiline and linezolid that were obtained from patients enrolled in a clinical study of a novel therapy regimen for drug-resistant TB in Moscow, Russia. Methods: Linezolid resistance was detected using MGIT 960 with a critical concentration of 1 mg/L. The MIC of bedaquiline was determined using the proportion method. To identify genetic determinants of resistance, sequencing of the mmpR ( Rv0678 ), atpE , atpC , pepQ , Rv1979c , rrl , rplC and rplD loci was performed...
April 6, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28387840/dose-optimization-of-piperacillin-tazobactam-in-critically-ill-children
#14
Pieter A J G De Cock, Sven C van Dijkman, Annick de Jaeger, Jef Willems, Mieke Carlier, Alain G Verstraete, Joris R Delanghe, Hugo Robays, Johan Vande Walle, Oscar E Della Pasqua, Peter De Paepe
Objectives: To characterize the population pharmacokinetics of piperacillin and tazobactam in critically ill infants and children, in order to develop an evidence-based dosing regimen. Patients and methods: This pharmacokinetic study enrolled patients admitted to the paediatric ICU for whom intravenous piperacillin/tazobactam (8:1 ratio) was indicated (75 mg/kg every 6 h based on piperacillin). Piperacillin/tazobactam concentrations were measured by an LC-MS/MS method...
April 6, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28387836/switching-to-second-line-art-in-relation-to-mortality-in-a-large-tanzanian-hiv-cohort
#15
Claudia Hawkins, Ellen Hertzmark, Donna Spiegelman, Aisa Muya, Nzovu Ulenga, Sehee Kim, Polyna Khudyakov, Beatrice Christian, David Sando, Eric Aris, Wafaie Fawzi
Objectives: In a large cohort of HIV-infected Tanzanians, we assessed: (i) rates of first-line treatment failure and switches to second-line ART; (ii) the effect of switching to second-line ART on death and loss to follow-up; and (iii) treatment outcomes on second-line ART by regimen. Methods: HIV-1-infected adults (≥15 years) initiated on first-line ART between November 2004 and September 2012, and who remained on initial therapy for at least 24 weeks before switching, were studied...
April 6, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28387828/double-mutation-in-dna-gyrase-confers-moxifloxacin-resistance-and-decreased-fitness-of-mycobacterium-smegmatis
#16
Tao Luo, Jinning Yuan, Xuan Peng, Guoping Yang, Youjun Mi, Changfeng Sun, Chuhan Wang, Chunxi Zhang, Lang Bao
Objectives: Ofloxacin and moxifloxacin are the most commonly used fluoroquinolones (FQs) for the treatment of tuberculosis. As a new generation FQ, moxifloxacin has been recommended for the treatment of ofloxacin-resistant TB. However, the mechanism by which ofloxacin-resistant Mycobacterium tuberculosis further gains resistance to moxifloxacin remains unclear. Methods: We used Mycobacterium smegmatis as a model for studying FQ resistance in M. tuberculosis . Moxifloxacin-resistant M...
April 6, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28387810/dolutegravir-monotherapy-in-hiv-infected-naive-patients-with-an-hiv-rna-load-100%C3%A2-000-copies-ml-a-medium-term-follow-up
#17
Massimiliano Lanzafame, Stefano Nicolè, Davide Gibellini, Emanuela Lattuada, Giulia Cucchetto, Fabio Rigo, Erica Diani, Ercole Concia, Sandro Vento
No abstract text is available yet for this article.
April 6, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28379449/an-association-between-k65r-and-hiv-1-subtype-c-viruses-in-patients-treated-with-multiple-nrtis
#18
Erasmus Smit, Ellen White, Duncan Clark, Duncan Churchill, Hongyi Zhang, Simon Collins, Deenan Pillay, Caroline Sabin, Mark Nelson, Alan Winston, Sophie Jose, Anna Tostevin, David T Dunn
Objectives: HIV-1 subtype C might have a greater propensity to develop K65R mutations in patients with virological failure compared with other subtypes. However, the strong association between viral subtype and confounding factors such as exposure groups and ethnicity affects the calculation of this propensity. We exploited the diversity of viral subtypes within the UK to undertake a direct comparative analysis. Patients and methods: We analysed only sequences with major IAS-defined mutations from patients with virological failure...
April 3, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28379382/variation-in-formation-of-persister-cells-against-colistin-in-acinetobacter-baumannii-isolates-and-its-relationship-with-treatment-failure
#19
Eun Seon Chung, Yu Mi Wi, Kwan Soo Ko
No abstract text is available yet for this article.
April 3, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28379381/imi-2-carbapenemase-in-a-clinical-klebsiella-variicola-isolated-in-the-uk
#20
Katie L Hopkins, Jacqueline Findlay, Michel Doumith, Barry Mather, Danièle Meunier, Stuart D'Arcy, Rachel Pike, Nazim Mustafa, Robin Howe, Mandy Wootton, Neil Woodford
No abstract text is available yet for this article.
April 3, 2017: Journal of Antimicrobial Chemotherapy
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