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International Journal of Antimicrobial Agents

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https://www.readbyqxmd.com/read/28807880/-broad-spectrum-bactericidal-activity-of-a-new-bioactive-grafting-material-f18-against-clinically-important-bacterial-strains
#1
M T Souza, L A Campanini, C R Chinaglia, O Peitl, E D Zanotto, C W O Souza
Infection is the most relevant surgical complication in implant or grafting procedures. Osteomyelitis and other chronic conditions pose a constant challenge in the current practice of medicine. In this context, a grafting biomaterial that possesses antibacterial properties combined with bioactivity could have great clinical impact. Researchers at the Vitreous Materials Laboratory (LaMaV-UFSCar) recently developed a glass composition, F18, which presents an improved workability range combined with high bioactivity...
August 11, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28807879/apigenin-induced-abcc1-mediated-efflux-of-glutathione-from-mature-erythrocytes-inhibits-the-proliferation-of-plasmodium-falciparum
#2
Ohud Fallatah, Elias Georges
Plasmodium falciparum infection of mature normal erythrocytes leads to heightened oxidative stress that is tolerated in normal but not in erythrocytes from sickle-cell, β-thalassemia, and glucose-6-phosphate dehydrogenase (G6PD) deficiency hosts. In this report, it was of interest to perturb the redox homeostasis of normal erythrocytes through drug-induced active efflux of glutathione via erythrocyte ABCC1 (member of the C- subfamily of the human ATP-binding cassette (ABC) transporters). To achieve this objective, we made use of apigenin, shown previously to activate ABCC1 glutathione efflux in mature erythrocytes...
August 11, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28803934/doses-durations-and-gender-predict-vancomycin-induced-kidney-injury-in-pre-clinical-studies
#3
J Nicholas O'Donnell, Nathaniel J Rhodes, Cristina M Miglis, Lejla Catovic, Jiajun Liu, Cameron Cluff, Gwen Pais, Sean Avedissian, Medha Joshi, Brooke Griffin, Walter Prozialeck, Anil Gulati, Thomas P Lodise, Marc H Scheetz
Background While vancomycin's exposure-dependent efficacy thresholds have been probed, less is known regarding acute kidney injury (AKI) thresholds for vancomycin. Sensitive urinary biomarkers such as Kidney injury molecule 1 (KIM-1) have shown high sensitivity and specificity for vancomycin-associated AKI. We sought to determine if dose-response curves existed with urinary KIM-1. Secondarily, we sought to evaluate the impact of therapy duration and gender status on observed relationships. Methods A systematic review was conducted via PubMed/MEDLINE...
August 10, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28803933/phage-in-urban-wastewater-have-the-potential-to-disseminate-antibiotic-resistance
#4
Gayathri Upeksha Gunathilaka, Varun Tahlan, Abdullah Ibn Mafiz, Manisha Polur, Yifan Zhang
A total of 29 Escherichia coli phage were isolated from wastewater samples collected from an urban wastewater treatment plant (WWTP) and characterized by host range determination, Transmission Electron Microscopy (TEM), antibiotic resistance gene identification, and phage transduction. β-lactam resistance genes, blaCMY, blaTEM, blaSHV, blaCTXM, and blaOXA, were amplified on phage DNA by PCR. Out of nine host range patterns observed, six were able to multiply in three or more indicator strains, including Shiga-toxin producing E...
August 10, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28803932/the-thiopurine-nucleoside-analogue-6-methylmercaptopurine-riboside-6mmpr-effectively-blocks-zika-virus-replication
#5
Otavio Valério de Carvalho, Daniele Mendes Félix, Leila Rodrigues de Mendonça, Catarina Maria Cataldi Sabino de Araújo, Rafael Freitas de Oliveira Franca, Marli Tenório Cordeiro, Abelardo Silva Júnior, Lindomar José Pena
Since the emergence of Zika virus (ZIKV) in Brazil in 2015, 48 countries and territories in the Americas have confirmed autochthonous cases of the disease caused by the virus. The ZIKV-associated neurological manifestations and congenital defects make the development of safe and effective antivirals against ZIKV of utmost importance. Here, we evaluated the antiviral activity of 6-methylmercaptopurine riboside (6MMPr), a thiopurine nucleoside analog derived from the prodrug azathioprine (AZA), against the epidemic ZIKV strain circulating in Brazil...
August 10, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28803931/explicit-definitions-of-potentially-inappropriate-prescriptions-of-antibiotics-in-older-patients-a-compilation-derived-from-a-systematic-review
#6
REVIEW
Nicolas Baclet, Grégoire Ficheur, Serge Alfandari, Laurie Ferret, Eric Senneville, Emmanuel Chazard, Jean-Baptiste Beuscart
CONTEXT: Potentially inappropriate prescriptions (PIPs) of antibiotics (antibiotic-PIPs) are generally detected by applying implicit definitions based on expert opinion. Explicit definitions are less frequently used, even though this approach would enable the automated detection of antibiotic-PIPs in electronic health records. Here, we systematically reviewed explicit definitions of antibiotic-PIPs used in studies of older adults. METHOD: We searched the MEDLINE(®), Scopus(®) and Web of Science(TM) core collection databases with a combination of three terms and their synonyms: "potentially inappropriate prescription" AND "antibiotic treatment" AND "older patients"...
August 10, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28802855/antifungal-resistance-in-mucorales
#7
E Dannaoui
The order Mucorales, which includes the agents of mucormycosis, comprises a large number of species. These fungi are characterized by high-level resistance to most currently available antifungal drugs. Standardized antifungal susceptibility testing methods are now available, allowing a better understanding of the in vitro activity of antifungal drugs against members of Mucorales. Such tests have made apparent that antifungal susceptibility within this group may be species-specific. Experimental animal models of mucormycosis have also been developed and are of great importance in bridging the gap between in vitro results and clinical trials...
August 9, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28802854/use-of-axenic-media-to-determine-antibiotic-efficacy-against-coxiella-burnetii
#8
K A Clay, M G Hartley, P Russell, I H Norville
The traditional methods of measuring minimum inhibitory concentration (MIC) of antibiotics against Coxiella burnetii are time consuming and technically difficult. The discovery of axenic media for C. burnetii culture provided an opportunity to determine the feasibility of using both broth dilution and an antimicrobial gradient method (E-test) as a convenient method of measuring MICs. The MIC for a range of antibiotics that have proven or potential use in the treatment of Q-fever, namely doxycycline, ciprofloxacin, levofloxacin, moxifloxacin, co-trimoxazole, were measured...
August 9, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28797807/impact-of-oral-gut-decontamination-on-staphylococcus-aureus-colonization-in-patients-undergoing-allogeneic-hematopoietic-stem-cell-transplantation
#9
C Matthias Wilk, Isabel Weber, Kati Seidl, Carole Rachmühl, Anne Holzmann-Bürgel, Antonia M S Müller, Stefan P Kuster, Urs Schanz, Annelies S Zinkernagel
Recipients of allogeneic hematopoietic stem cell transplantation (allo-HSCT) are severely immunocompromised and at increased risk for infections. In this prospective, observational, single-center study including 110 HSCT-recipients, the S. aureus colonization rate was reduced from 12% to 0% (p<0.001) following peri-transplant oral gut decontamination. No invasive S. aureus infections were observed.
August 7, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28782709/mic-distribution-among-wild-type-strains-of-legionella-pneumophila-identifies-a-subpopulation-with-reduced-susceptibility-to-macrolides-owing-to-efflux-pump-genes
#10
Marine Vandewalle-Capo, Clémence Massip, Ghislaine Descours, Joséphine Charavit, Joelle Chastang, Pierre Alain Billy, Sandrine Boisset, Gerard Lina, Christophe Gilbert, Max Maurin, Sophie Jarraud, Christophe Ginevra
Legionnaires' disease is a severe pneumonia mainly caused by Legionella pneumophila, and which is treated by antibiotics. The purpose of this study was to describe the susceptibility of clinical strains of Legionella pneumophila to seven antibiotics used for legionellosis treatment. The minimum inhibitory concentrations (MICs) of 109 well-characterized clinical strains of L. pneumophila serogroup-1 were determined using a broth microdilution method without charcoal and compared to antibiotic-resistant strains selected in vitro...
August 4, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28782706/determination-of-the-mutation-prevention-concentration-of-imipenem-for-the-two-imipenem-susceptible-bacteroides-fragilis-strains-q1f2-cfia-positive-and-atcc-25282-cfia-negative
#11
LETTER
Pak-Leung Ho, Chong-Yee Yau, Ya Wang, Kin-Hung Chow
No abstract text is available yet for this article.
August 4, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28782708/inhibition-of-aminoglycoside-6-n-acetyltransferase-type-ib-mediated-amikacin-resistance-by-zinc-complexed-to-clioquinol-an-ionophore-active-against-tumors-and-neurodegenerative-diseases
#12
LETTER
Kevin Chiem, Fong Hue, Jesus Magallon, Marcelo E Tolmasky
No abstract text is available yet for this article.
August 3, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28782707/esbl-producing-enterobacteriaceae-colonization-in-long-term-care-facilities-ltcfs-a-systematic-review-and-meta-analysis
#13
REVIEW
Myrto Eleni Flokas, Michail Alevizakos, Fadi Shehadeh, Nikolaos Andreatos, Eleftherios Mylonakis
OBJECTIVES: To estimate the colonization rate by extended-spectrum beta-lactamase producing Enterobacteriaceae (ESBL-PE) among residents of Long Term Care facilities (LTCFs) and to identify pertinent risk factors. METHODS: A systematic search of PubMed and EMBASE databases for studies published up to May, 2016 that provided raw data for gastrointestinal colonization by ESBL-PE among LTCF residents. RESULTS: Twenty three studies reporting data on 9,775 screened subjects met our inclusion criteria...
August 3, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28782705/investigation-of-potential-risk-factors-for-the-occurrence-of-escherichia-coli-isolates-from-german-fattening-pig-farms-harbouring-the-mcr-1-colistin-resistance-gene
#14
Katja Hille, Nicole Roschanski, Inga Ruddat, Johanna Woydt, Maria Hartmann, Uwe Rösler, Lothar Kreienbrock
Within the scope of a cross-sectional investigation on fattening pig farms conducted in 2011 and 2012, 48 fattening farms in different agricultural regions of Germany were studied. Primary cultures of boot swabs and collective faecal samples were stored at -80°C and screened for the presence of the mcr-1 colistin resistance gene. The laboratory results were linked to farm related data collected via questionnaire. We used logistic regression models to investigate the association between occurrence of mcr-1 and farm related data...
August 3, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28782704/geographical-variation-in-therapy-for-bloodstream-infections-due-to-multidrug-resistant-enterobacteriaceae-a-post-hoc-analysis-of-the-increment-study
#15
Patrick N A Harris, M Diletta Pezzani, Belén Gutiérrez-Gutiérrez, Pierluigi Viale, Po-Ren Hsueh, Patricia Ruiz-Garbajosa, Mario Venditti, Mario Tumbarello, Carolina Navarro-Francisco, Esther Calbo, Murat Akova, Helen Giamarellou, Antonio Oliver, Benito Almirante, Oriol Gasch, Luis Martínez-Martínez, Mitchell J Schwaber, George Daikos, Johann Pitout, Carmen Peña, Alicia Hernández-Torres, Yohei Doi, Federico Pérez, Felipe Francisco Tuon, Evelina Tacconelli, Yehuda Carmeli, Robert A Bonomo, Álvaro Pascual, David L Paterson, Jesús Rodríguez-Baño
We aimed to describe regional differences in therapy for bloodstream infection (BSI) caused by extended-spectrum β-lactamase-producing Enterobacteriaceae (ESBL-E) or carbapenemase-producing Enterobacteriaceae (CPE). 1,482 patients in 12 countries were included from an observational study of BSI caused by ESBL-E or CPE. Multivariate logistic regression was used to calculate adjusted odds ratios (aORs) for the influence of country of recruitment on empirical use of β-lactam/β-lactamase inhibitors (BLBLI) or carbapenems, targeted use of BLBLI for ESBL-E and use of targeted combination therapy for CPE...
August 3, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28735882/antibiotic-resistance-and-population-structure-of-cystic-fibrosis-pseudomonas-aeruginosa-isolates-from-a-spanish-multi-centre-study
#16
Carla López-Causapé, Juan de Dios-Caballero, Marta Cobo, Amparo Escribano, Óscar Asensio, Antonio Oliver, Rosa Del Campo, Rafael Cantón
The first Spanish multi-centre study on the microbiology of cystic fibrosis (CF) was conducted from 2013 to 2014. The study involved 24 CF units from 17 hospitals, and recruited 341 patients. The aim of this study was to characterise Pseudomonas aeruginosa isolates, 79 of which were recovered from 75 (22%) patients. The study determined the population structure, antibiotic susceptibility profile and genetic background of the strains. Fifty-five percent of the isolates were multi-drug-resistant, and 16% were extensively-drug-resistant...
July 20, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28733213/risk-factors-for-the-infection-and-or-colonization-of-extended-spectrum-beta-lactamase-producing-bacteria-in-a-neonatal-intensive-care-unit-a-meta-analysis
#17
REVIEW
Xuan Li, Xuan Xu, Xianxian Yang, Mei Luo, Pin Liu, Kewen Su, Ying Qing, Shuai Chen, Jingfu Qiu, Yingli Li
BACKGROUND: Extended-spectrum beta-lactamase (ESBL)-producing bacteria are the important causes of healthcare associated infection in the neonatal intensive care unit (NICU). This study performed a meta-analysis to identify the risk factors associated with infection and/or colonization of ESBL-producing bacteria in the NICU. METHODS: Relevant studies in the literature published from January 1, 2000 to July 1, 2016 were searched in the electronic databases. The literature was screened and data were extracted according to the inclusion and exclusion criteria...
July 18, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28729124/trends-in-antimicrobial-resistance-in-neisseria-gonorrhoeae-and-molecular-characteristics-of-neisseria-gonorrhoeae-with-decreased-susceptibility-to-ceftriaxone-in-shandong-china-2007-to-2014
#18
Lihong Zhao, Aihua Liu, Ruiying Li, Shuping Zhao
In this study, the trends of AMR in N. gonorrhoeae were analyzed in Shandong Province of China during 2007-2014. Moreover, the ceftriaxone genetic resistance determinants including penA, mtrR, penB, ponA, and pilQ genes were sequenced, and the molecular mechanisms of decreased susceptibility or resistance to ceftriaxone in N. gonorrhoeae were elucidated. Overall, the increasing trends of resistance to PEN, TET, and CIP, and decreasing trends of susceptibility to CRO and AZM were observed in Shandong Province of China between 2007 and 2014...
July 17, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28729123/increased-colistin-resistance-upon-acquisition-of-the-plasmid-mediated-mcr-1-gene-in-escherichia-coli-isolates-with-chromosomally-encoded-reduced-susceptibility-to-polymyxins
#19
LETTER
Aurélie Jayol, Patrice Nordmann, Catherine André, Véronique Dubois, Laurent Poirel
No abstract text is available yet for this article.
July 17, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28711678/linezolid-in-liver-failure-exploring-the-value-of-the-maximal-liver-function-capacity-limax-test-in-a-pharmacokinetic-pilot-study
#20
Sebastian G Wicha, Otto R Frey, Anka C Roehr, Johann Pratschke, Martin Stockmann, Rawan Alraish, Tilo Wuensch, Magnus Kaffarnik
BACKGROUND: Patients in the intensive care unit frequently require antibiotic treatment. Liver impairment possesses substantial challenges for dose selection in these patients. The aim of the present pilot study was to assess the novel maximal liver function capacity (LiMAx test) in comparison to conventional liver function markers as covariates of drug clearance in liver failure using linezolid as model drug. METHODS: 28 patients with different degrees of liver failure were recruited and LiMAx test, plasma, dialysis and urine sampling was performed under linezolid steady-state therapy (600 mg BID)...
July 12, 2017: International Journal of Antimicrobial Agents
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