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tigecycline

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https://www.readbyqxmd.com/read/28237830/a-need-to-revisit-clinical-breakpoints-of-tigecycline-effect-of-atypical-non-linear-plasma-protein-binding
#1
Ravi Shankar Prasad Singh, Jatinder Kaur Mukker, Stefanie K Drescher, Amelia N Deitchman, Hartmut Derendorf
Tigecycline is highly active against various drug-resistant bacteria. The US Food and Drug Administration (FDA) recently issued a black box warning for tigecycline owing to an associated increase in all-cause mortality. Clinical breakpoints of antibiotics are vital in susceptibility testing of pathogens for the selection of antibiotic therapy; however, no consensus exists between different committees on the clinical breakpoints of tigecycline. Of note, tigecycline exhibits atypical non-linear plasma protein binding (PPB) behaviour, and the pivotal probability of target attainment (PTA) analysis for the determination of clinical breakpoints did not account for the PPB of tigecycline...
February 22, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28235571/efficacy-of-rifampicin-combination-therapy-for-the-treatment-of-enterococcal-infections-assessed-in-vivo-using-a-galleria-mellonella-infection-model
#2
Kirsty Skinner, Jonathan A T Sandoe, Ranjith Rajendran, Gordon Ramage, Sue Lang
Enterococci are a leading cause of healthcare-associated infection worldwide and display increasing levels of resistance to many of the commonly used antimicrobials, making treatment of their infections challenging. Combinations of antibiotics are occasionally employed to treat serious infections, allowing for the possibility of synergistic killing. The aim of this study was to evaluate the effects of different antibacterial combinations against enterococcal isolates using an in vitro approach and an in vivo Galleria mellonella infection model...
February 21, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28223374/enterobacter-cloacae-complex-isolates-harboring-blanmc-a-or-blaimi-type-class-a-carbapenemase-genes-on-novel-chromosomal-integrative-elements-and-plasmids
#3
David A Boyd, Laura F Mataseje, Ross Davidson, Johannes A Delport, Jeff Fuller, Linda Hoang, Brigitte Lefebvre, Paul Levett, Diane L Roscoe, Barbara M Willey, Michael R Mulvey
Carbapenem-resistant Enterobacter cloacae complex isolates submitted to a reference laboratory from 2010 to 2015 were screened by PCR for seven common carbapenemase gene groups, namely, KPC, NDM, OXA-48, VIM, IMP, GES, and NMC-A/IMI. Nineteen of the submitted isolates (1.7%) were found to harbor Ambler class A blaNMC-A or blaIMI-type carbapenemases. All 19 isolates were resistant to at least one carbapenem but susceptible to aminoglycosides, trimethoprim-sulfamethoxazole, tigecycline, and ciprofloxacin. Most isolates (17/19) gave positive results with the Carba-NP test for phenotypic carbapenemase detection...
February 21, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28221837/environmental-occurrence-and-antibiotic-susceptibility-profile-of-listeria-monocytogenes-at-a-slaughterhouse-raw-processing-plant-in-romania
#4
Claudia Sala, Adriana Morar, Emil Tîrziu, Ileana Nichita, Mirela Imre, Kálmán Imre
This survey was conducted to investigate the occurrence and antimicrobial susceptibility of Listeria monocytogenes isolates in the environment of a pig slaughterhouse raw processing plant complex in western Romania. A total of 97 environmental samples from food contact (n = 60) and nonfood contact (n = 37) surfaces were examined with standard methods. The susceptibility of the isolates to 17 antimicrobial agents was determined with the VITEK 2 automated system. Overall, 25 (25.8%) samples were positive for L...
October 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28220115/spread-of-the-blaoxa-23-containing-tn2008-in-carbapenem-resistant-acinetobacter-baumannii-isolates-grouped-in-cc92-from-china
#5
Yisheng Chen, Jing Gao, Haomin Zhang, Chunmei Ying
The rapid expansion of carbapenem-resistant Acinetobacter baumannii (CRAB) clinical isolates is a big issue. We investigated the antibiotic susceptibility, molecular epidemiology and resistance gene of A. baumannii collected at two hospitals in Shanghai, China. Besides, the A. baumannii PCR-based replicon typing method (AB-PBRT) was conducted to categorize the plasmids into homogeneous groups on the basis of replicase genes. Most CRAB isolates showed high-level resistance to almost all antibiotics but retain susceptibility to colistin and tigecycline...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28217763/impact-of-tigecycline-versus-other-antibiotics-on-the-fecal-metabolome-and-on-colonization-resistance-to-clostridium-difficile-in-mice
#6
Robin L P Jump, David Kraft, Kelly Hurless, Alex Polinkovsky, Curtis J Donskey
BACKGROUND: The glycylcycline antibiotic tigecycline may have a relatively low propensity to promote Clostridium difficile infection in part because it causes less disruption of the indigenous intestinal microbiota than other broad-spectrum antibiotics. We used a mouse model to compare the effects of tigecycline versus other commonly used antibiotics on colonization resistance to C. difficile and on the metabolic functions of the intestinal microbiota. METHODS: To assess in vivo colonization resistance to C...
January 18, 2017: Pathogens & Immunity
https://www.readbyqxmd.com/read/28188830/in-vitro-activity-of-clarithromycin-in-combination-with-other-antimicrobial-agents-against-mycobacterium-abscessus-and-mycobacterium-massiliense
#7
Zhijian Zhang, Jie Lu, Min Liu, Yufeng Wang, Yanlin Zhao, Yu Pang
Macrolides, especially clarithromycin (CLA), remain the cornerstone of therapy for Mycobacterium abscessus complex infections. The purpose of this study was to gather results from in vitro drug susceptibility testing of M. abscessus and Mycobacterium massiliense for the combination of CLA with various other agents, including linezolid (LZD), moxifloxacin (MOX), amikacin (AMK) and tigecycline (TGC). A total of 40 M. abscessus complex isolates were studied, comprising 20 M. abscessus and 20 M. massiliense strains...
February 7, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28187785/longevity-and-gender-as-the-risk-factors-of-methicillin-resistant-staphylococcus-aureus-infections-in-southern-poland
#8
Monika Pomorska-Wesołowska, Anna Różańska, Joanna Natkaniec, Barbara Gryglewska, Anna Szczypta, Mirosława Dzikowska, Agnieszka Chmielarczyk, Jadwiga Wójkowska-Mach
BACKGROUND: The proportion of older people among the general population has risen. Staphylococcus aureus (SA) constitutes a significant problem. Underlying disease and functional debility, predispose the older adult to staphylococcal carriage and infection, specially bloodstream infection and pneumonia. METHODS: This is a retrospective cohort study of older patients with SA infections. We analyzed a database containing the results of laboratory cultures from patients treated in 2013 for SA infections and selected 613 hospitalized and non-hospitalized people aged ≥60 years...
February 10, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/28185779/corrigendum-to-comparison-of-the-clinical-efficacy-between-tigecycline-plus-extended-infusion-imipenem-and-sulbactam-plus-imipenem-against-ventilator-associated-pneumonia-with-pneumonic-extensively-drug-resistant-acinetobacter-baumannii-bacteremia-and-correlation
#9
https://www.readbyqxmd.com/read/28181665/multidrug-resistant-bacteria-among-patients-with-ventilatorassociated-pneumonia-in-an-emergency-intensive-care-unit-egypt
#10
Magda M Azzab, Rehab H El-Sokkary, Mohamed M Tawfeek, Manar G Gebriel
Ventilator-associated pneumonia (VAP) is the most common hospital-acquired infection among mechanically ventilated patients. Our objectives were to determine the incidence of VAP, isolate multidrug-resistant bacteria, identify the most prevalent resistant strains and identify their antibiotic susceptibility pattern. The VAP rate was calculated. The isolated microbes were identified and tested for antibiotic susceptibilities. The minimum inhibitory concentrations were determined of imipenem, meropenem and ertapenem for Klebsiella isolates...
February 1, 2017: Eastern Mediterranean Health Journal, la Revue de Santé de la Méditerranée Orientale
https://www.readbyqxmd.com/read/28167564/multiclonal-expansion-of-klebsiella-pneumoniae-isolates-producing-ndm-1-in-rio-de-janeiro-brazil
#11
Caio Augusto Martins Aires, Polyana Silva Pereira, Carlos Felipe Machado de Araujo, Thiago Pavoni Gomes Chagas, Jane Cleide Oliveira, Sibelle Nogueira Buonora, Rodolpho Mattos Albano, Ana Paula D'Alincourt Carvalho-Assef, Marise Dutra Asensi
We characterized NDM-1-producing Klebsiella spp. isolates from Rio de Janeiro, Brazil. PCR was applied for resistance and virulence determinants. The genetic context of blaNDM was determined by S1 PFGE and hybridization. The genotyping were performed by PFGE and MLST. Most isolates carried multiple resistance genes and remained susceptible to amikacin, fosfomycin/trometamol, polymyxin B and tigecycline. The spread of NDM-1-producing K. pneumoniae was not associated with a clonal expansion and appears to be associated with Tn3000...
February 6, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28167542/in-vitro-activity-of-delafloxacin-when-tested-against-contemporary-bacterial-pathogens-from-the-united-states-and-europe-2014
#12
M A Pfaller, H S Sader, P R Rhomberg, R K Flamm
The in vitro activities of delafloxacin and comparator antimicrobial agents were tested against 6,485 bacterial isolates from medical centers in Europe (EU) and the United States (US) in 2014. Delafloxacin was the most potent agent tested against methicillin-susceptible S. aureus (MSSA), MRSA, Streptococcus pneumoniae, viridans group streptococci, and β-hemolytic streptococci and had activity similar to that of ciprofloxacin and levofloxacin against certain members of the Enterobacteriaceae. Overall the broadest coverage of tested pathogens (Gram-positive cocci and Gram-negative bacilli) was observed with meropenem and tigecycline in both EU and US...
February 6, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28159446/in-vitro-activity-of-oritavancin-against-gram-positive-pathogens-isolated-in-canadian-hospital-laboratories-from-2011-to-2015
#13
James A Karlowsky, Andrew J Walkty, Melanie R Baxter, Francis F Arhin, Gregory Moeck, Heather J Adam, George G Zhanel
Gram-positive bacterial pathogens isolated from patient specimens submitted to 15 Canadian hospital laboratories from 2011 to 2015 were tested in the coordinating laboratory for susceptibility to oritavancin and comparative antimicrobial agents using the Clinical and Laboratory Standards Institute M07-A10 (2015) broth microdilution method. Oritavancin's in vitro activity was equivalent to, or more potent than, vancomycin, daptomycin, linezolid, and tigecycline against methicillin-susceptible Staphylococcus aureus (n=2680; oritavancin MIC90, 0...
January 20, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28156193/characterization-of-ndm-7-carbapenemase-producing-escherichia-coli-isolates-in-the-arabian-peninsula
#14
Tibor Pál, Akela Ghazawi, Dania Darwish, Laura Villa, Alessandra Carattoli, Rayhan Hashmey, Zulfa Aldeesi, Wafaa Jamal, Vincent Rotimi, Amina Al-Jardani, Seif S Al-Abri, Ágnes Sonnevend
AIM: The purpose of this study was to characterize the New Delhi metallo-beta lactamase (NDM)-7-producing Enterobacteriaceae isolated in the Arabian Peninsula. METHODS: Enterobacteriaceae identified to carry blaNDM-7 in a collection of 157 NDM-producing isolates from Kuwait, Oman, Saudi Arabia, and the United Arab Emirates (UAE) were investigated for their antibiotic and disinfectant susceptibility, and resistance gene content. The virulence profile, phylogenetic and sequence types of the isolates were also determined...
February 3, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28153556/use-of-tigecycline-for-the-management-of-clostridium-difficile-colitis-in-oncology-patients-and-case-series-of-breakthrough-infections
#15
B J Brinda, Y Pasikhova, R E Quilitz, C M Thai, J N Greene
BACKGROUND: Clostridium difficile infection (CDI) is the most frequent cause of nosocomial diarrhoea in adults. Cancer patients, in particular, are at a higher risk for CDI. Limited clinical data exist regarding the use of tigecycline for the treatment of CDI, especially in patients with oncologic and haematologic malignancies. AIM: To characterize the use of tigecycline for treatment of CDI in oncology patients at an academic cancer centre. METHODS: This was a retrospective, single-centre, single-arm, chart review evaluating the use of tigecycline for the management of CDI in oncology patients at an academic cancer centre...
December 29, 2016: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28150578/resistotyping-phenotyping-and-genotyping-of-new-delhi-metallo-%C3%AE-lactamase-ndm-among-gram-negative-bacilli-from-iranian-patients
#16
Dariush Shokri, Mohammad Rabbani Khorasgani, Seyed Masih Fatemi, Abbas Soleimani-Delfan
PURPOSE: The purpose of this study was investigation of New Delhi metallo-β-lactamase (NDM) production among gram negative bacilli. METHODOLOGY: Antibiogram-Resistotyping and detection of NDM in clinical isolates of Klebsiella pneumoniae, Acinetobacter baumannii and Pseudomonas aeruginosa and comparative evaluation of the diagnostic performance of three phenotypic methods for NDM detection considering PCR as gold standard were performed. Minimum Inhibitory Concentration (MIC) of antibiotics against NDM positive strains by E-test and clonal relationship analysis using Enterobacterial Repetitive Intergenic Consensus Polymerase Chain Reaction (ERIC-PCR) in these strains were determined...
February 1, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28139430/prevalence-of-mcr-1-in-escherichia-coli-and-klebsiella-pneumoniae-recovered-from-bloodstream-infections-in-china-a-multicentre-longitudinal-study
#17
Jingjing Quan, Xi Li, Yan Chen, Yan Jiang, Zhihui Zhou, Huichuan Zhang, Lu Sun, Zhi Ruan, Ye Feng, Murat Akova, Yunsong Yu
BACKGROUND: Polymyxin antibiotics are used as last-resort therapies to treat infections caused by multidrug-resistant Gram-negative bacteria. The plasmid-mediated colistin resistance determinant MCR-1 has been identified in Enterobacteriaceae in China. We did this study to investigate the prevalence of the mcr-1 gene in clinical isolates from patients with bloodstream infections in China. METHODS: Clinical isolates of Escherichia coli and Klebsiella pneumoniae were collected from patients with bloodstream infections at 28 hospitals in China, then screened for colistin resistance by broth microdilution and for the presence of the mcr-1 gene by PCR amplification...
January 27, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28137940/antimicrobial-resistance-in-uropathogens-and-appropriateness-of-empirical-treatment-a-population-based-surveillance-study-in-indonesia
#18
Adhi Kristianto Sugianli, Franciscus Ginting, R Lia Kusumawati, Emmy Hermiyati Pranggono, Ayodhia Pitaloka Pasaribu, Firza Gronthoud, Suzanne Geerlings, Ida Parwati, Menno D De Jong, Frank Van Leth, Constance Schultsz
OBJECTIVES: Urinary tract infections (UTIs) are a common reason for empirical treatment with broad-spectrum antibiotics worldwide. However, population-based antimicrobial resistance (AMR) prevalence data to inform empirical treatment choice are lacking in many regions, because of limited surveillance capacity. We aimed to assess the prevalence of AMR to commonly used antimicrobial drugs in Escherichia coli and Klebsiella pneumoniae isolated from patients with community- or healthcare-associated UTIs on two islands of Indonesia...
January 30, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28137509/plasmid-borne-carbapenem-hydrolyzing-class-d-%C3%AE-lactamases-chdls-and-adeabc-efflux-pump-conferring-carbapenem-tigecycline-resistance-among-acinetobacter-baumannii-isolates-harboring-tnabars
#19
Mohammad Savari, Alireza Ekrami, Saeed Shoja, Abbas Bahador
Here we studied the prevalence and mechanisms of simultaneous resistance to carbapenem and tigecycline and accumulation of resistance determinants reservoirs in genome of Acinetobacter baumannii (A. baumannii) clinical isolates. Susceptibility of the isolates were measured to 18 antimicrobial agents. Genetic diversity of the microbial population was determined using the International Clonal lineage typing (IC typing), multiple locus VNTR analysis (MLVA) and plasmid profiling methods. To detect the AbaRs, Carbapenem-Hydrolyzing Class D β-Lactamases (CHDLs) genes, AdeABC efflux pump genes and resistance determinants, PCR was used...
March 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28133753/repurposing-tigecycline-for-the-treatment-of-alcohol-use-disorder
#20
Alfredo Oliveros, Doo-Sup Choi
No abstract text is available yet for this article.
January 30, 2017: Alcoholism, Clinical and Experimental Research
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