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cephalosporin resistance

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https://www.readbyqxmd.com/read/27921337/extended-spectrum-cephalosporin-resistance-among-clinical-isolates-of-enterobacteriaceae-in-west-norway-during-2006-2013-a-prospective-surveillance-study
#1
Haima Mylvaganam, Helge Kolstad, Rebecca Irene Breistein, Grete Lind, Dag Harald Skutlaberg
Routine surveillance of resistance to broad-spectrum cephalosporins in Enterobacteriaceae and phenotypic identification of underlying mechanisms using a simple strategy was commenced in 2006 at our laboratory, serving West Norway. This report focuses on the results until 2013. The classical plasmid-mediated extended spectrum beta-lactamase (ESBLA ) among clinically relevant Escherichia coli isolates showed an increase from 0.6% to 4.3% during the surveillance period, while prevalence for other mechanisms remained stable, below 0...
December 6, 2016: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/27920982/clinical-implications-of-paracoccus-yeeii-bacteremia-in-a-patient-with-decompensated-cirrhosis
#2
Jordan Sack, David R Peaper, Pramod Mistry, Maricar Malinis
Infections in patients with cirrhosis are common among those who develop variceal hemorrhage. Prophylactic antimicrobial treatment with third generation cephalosporins is recommended in patients with advanced cirrhosis and gastrointestinal hemorrhage. However no infectious source is identified in up to 50% of patients with cirrhosis and clinical sepsis. We report the first case of Paracoccus yeeii bacteremia in a patient with decompensated cirrhosis who presented with variceal hemorrhage. This rare gram negative organism that occurs naturally in the soil has been difficult to isolate until recent technological advances and may not be susceptible to third generation cephalosporins...
2017: IDCases
https://www.readbyqxmd.com/read/27916604/carbapenem-resistant-and-cephalosporin-susceptible-a-worrisome-phenotype-among-pseudomonas-aeruginosa-clinical-isolates-in-brazil
#3
Eloiza Helena Campana, Danilo Elias Xavier, Fernanda Villas-Boas Petrolini, Jhonatha Rodrigo Cordeiro-Moura, Maria Rita Elmor de Araujo, Ana Cristina Gales
The mechanisms involved in the uncommon resistance phenotype, carbapenem resistance and broad-spectrum cephalosporin susceptibility (Carb-R/Ceph-S), were investigated in 25 Pseudomonas aeruginosa clinical isolates that exhibited this phenotype, which were recovered from three different hospitals located in São Paulo, Brazil. The antimicrobial susceptibility profile was determined by CLSI broth microdilution. β-Lactamase-encoding genes were investigated by PCR followed by DNA sequencing. Carbapenem hydrolysis activity was investigated by spectrophotometer and MALDI-TOF assays...
December 1, 2016: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27909820/genomic-analysis-reveals-the-presence-of-a-class-d-beta-lactamase-with-broad-substrate-specificity-in-animal-bite-associated-capnocytophaga-species
#4
S Zangenah, A F Andersson, V Özenci, P Bergman
Capnocytophga canimorsus and Capnocytophga cynodegmi can be transmitted from cats and dogs to humans, and can cause a wide range of infections including wound infections, sepsis, or endocarditis. We and others recently discovered two new Capnocytophaga species, C. canis and C. stomatis, mainly associated with wound infections. The first-line treatment of animal bite related infections is penicillin, and in case of allergy, doxycycline and trimethoprim/sulfamethoxazole. However, there is a lack of antibiotic susceptibility patterns for animal bite associated Capnocytophaga species...
December 1, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27907224/single-versus-combination-intravenous-anti-pseudomonal-antibiotic-therapy-for-people-with-cystic-fibrosis
#5
REVIEW
Heather E Elphick, Alison Scott
BACKGROUND: Choice of antibiotic, and the use of single or combined therapy are controversial areas in the treatment of respiratory infection due to Pseudomonas aeruginosa in cystic fibrosis (CF). Advantages of combination therapy include wider range of modes of action, possible synergy and reduction of resistant organisms; advantages of monotherapy include lower cost, ease of administration and reduction of drug-related toxicity. Current evidence does not provide a clear answer and the use of intravenous antibiotic therapy in cystic fibrosis requires further evaluation...
December 1, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27899921/high-prevalence-of-%C3%AE-lactamase-and-plasmid-mediated-quinolone-resistance-genes-in-extended-spectrum-cephalosporin-resistant-escherichia-coli-from-dogs-in-shaanxi-china
#6
Xiaoqiang Liu, Haixia Liu, Yinqian Li, Caiju Hao
Objective: The aim of this study was to investigate the occurrence and molecular characterization of extended-spectrum β-lactamases (ESBL), plasmid-mediated AmpC β-lactamase (pAmpC) and carbapenemases as well as plasmid-mediated quinolone-resistant (PMQR) among extended-spectrum cephalosporin-resistant (ESC-R) Escherichia coli from dogs in Shaanxi province in China. Methods: A total of 40 ESC-R Escherichia coli selected from 165 Extraintestinal pathogenic E. coli (ExPEC) isolated from dogs were screened and characterized for the genes encoding for the ESBLs, pAmpC, carbapenemases and PMQR genes by PCR and sequencing...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27895012/a-multicenter-observational-study-of-ceftaroline-fosamil-for-methicillin-resistant-staphylococcus-aureus-bloodstream-infections
#7
Evan J Zasowski, Trang D Trinh, Kimberly C Claeys, Anthony M Casapao, Noor Sabagha, Abdalhamid M Lagnf, Kenneth P Klinker, Susan L Davis, Michael J Rybak
Novel therapies for methicillin-resistant Staphylococcus aureus (MRSA) bloodstream infection (BSI) are needed in the setting of reduced antibiotic susceptibilities and therapeutic failure. Ceftaroline is an advanced generation cephalosporin with MRSA activity. Although not FDA approved for MRSA BSI, ceftaroline has generated much interest as a potential treatment option. However, detailed description of its use in this setting remains limited. To address this, we conducted a retrospective, multicenter, observational study of adult patients with MRSA BSI treated with at least 72 hours of ceftaroline from 2011 to 2015...
November 28, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27894763/extended-spectrum-beta-lactamase-esbl-producing-bacteria-urinary-tract-infections-and-complex-pediatric-urology
#8
Ruth Wragg, Anna Harris, Mitul Patel, Andrew Robb, Harish Chandran, Liam McCarthy
AIM OF THE STUDY: Extended spectrum beta lactamase (ESBL) producing bacteria are resistant to most beta-lactam antibiotics including third-generation cephalosporins, quinolones and aminoglycosides. This resistance is plasmid-borne and can spread between species. Management of ESBL is challenging in children with recurrent urinary tract infections (UTIs) and complex urological abnormalities. We aim to quantify the risk in children and specifically in urological patients. METHODS: Retrospective review of a microbiology database (April 2014 to November 2015)...
November 13, 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/27894749/the-microbiology-of-diabetic-foot-infections-in-patients-recently-treated-with-antibiotic-therapy-a-prospective-study-from-india
#9
Ashu Rastogi, Suja Sukumar, Abhishek Hajela, Soham Mukherjee, Pinaki Dutta, Sanjay Kumar Bhadada, Anil Bhansali
AIM: Clinicians often treat clinically infected diabetic foot ulcers without information from cultures of the wound. The results of wound cultures may also be affected by previous antibiotic therapy. Thus, we aimed to study the microbial isolates, and antimicrobial sensitivity of previously treated patients with a clinically infected DFU. RESEARCH DESIGN AND METHODS: 293 consecutive patients with clinically infected DFU on prior antimicrobial treatment within the immediate past few days for a duration greater than one week were evaluated for microbial etiology, antibiotic sensitivity and final outcomes...
November 9, 2016: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/27892440/urinary-tract-infection-in-asymptomatic-newborns-with-prolonged-unconjugated-hyperbilirubunemia-a-hospital-based-observational-study-from-western-region-of-nepal
#10
T Malla, B Sathian, K Karmacharya Malla, S Adhikari
Background Urine culture is usually not a part of work-up for neonatal unconjugated hyperbilirubinemia; hence its prevalence remains unknown. Objective This study was done to determine the incidence of urinary tract infection (UTI) in asymptomatic newborns with prolonged unconjugated hyperbilirubinemia and to evaluate which other laboratory parameters are associated with UTIs. Method A prospective observational study where jaundiced newborns otherwise clinically well, were evaluated for UTI. The study was carried out in neonatal intensive care unit of Manipal Teaching Hospital, Pokhara from June 2012 -April 2013...
January 2016: Kathmandu University Medical Journal (KUMJ)
https://www.readbyqxmd.com/read/27890811/enteric-fever-in-barcelona-changing-patterns-of-importation-and-antibiotic-resistance
#11
Ana Requena-Méndez, Monica Berrocal, Manuel Almela, Alex Soriano, Joaquim Gascón, José Muñoz
BACKGROUND: Enteric fever's incidence is decreasing among residents of high-income countries, although it's rising in travelers coming from low-resource endemic settings. The study's aim is to describe epidemiological, clinical and laboratory features of patients with enteric fever. METHODS: Retrospective descriptive study of enteric fever cases diagnosed at a Tropical Medicine Unit in Barcelona, 1993-2012. RESULTS: Out of 40 patients, 31(77,5%) were returning travelers, and 70% of them had been in Southern Asia...
November 24, 2016: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/27889501/endophthalmitis-after-clear-corneal-cataract-surgery-outcomes-over-two-decades
#12
Nicolas A Yannuzzi, Nancy Si, Nidhi Relhan, Ajay E Kuriyan, Thomas A Albini, Audina M Berrocal, Janet L Davis, William E Smiddy, Justin Townsend, Darlene Miller, Harry W Flynn
PURPOSE: To report the clinical features, causative organisms, and visual acuity (VA) outcomes associated with acute-onset endophthalmitis after clear corneal cataract surgery over the past two decades. DESIGN: Retrospective case series. METHODS: Clinical and microbiology records were reviewed for 63 eyes of 63 patients who presented to a tertiary referral center between 2006 and 2015 with culture-positive endophthalmitis occurring within 6 weeks of clear corneal cataract surgery...
November 23, 2016: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/27889371/identification-and-molecular-characterization-of-escherichia-coli-blashv-genes-in-a-chinese-teaching-hospital
#13
Mei Zhu, Guangjian Yang, Ailing Li, Li Zong, Zhaoguang Dong, Junwan Lu, Kaibo Zhang, Cong Cheng, Qingli Chang, Xiuying Wu, Jianchao Ying, Xianneng Li, Li Ding, Haixiao Zheng, Junping Yu, Jun Ying, Teng Xu, Huiguang Yi, Peizhen Li, Kewei Li, Songquan Wu, Qiyu Bao, Junrong Wang
Escherichia coli (E. coli) commonly reside in human intestine and most E. coli strains are harmless, but some serotypes cause serious food poisoning. This study identified and molecularly characterized E. coli blaSHV genes from 490 E. coli strains with multi-drug resistance in a hospital population. PCR and molecular cloning and southern blot were performed to assess functions and localizations of this resistant E. coli gene and the pulsed-field gel electrophoresis (PFGE) was utilized to demonstrate the clonal relatedness of the positive E...
November 23, 2016: Gene
https://www.readbyqxmd.com/read/27889013/methicillin-resistant-staphylococcus-aureus-infections-a-review-of-the-currently-available-treatment-options
#14
REVIEW
S M Purrello, J Garau, E Giamarellos, T Mazzei, F Pea, A Soriano, S Stefani
This review is the result of discussions that took place at the 5th MRSA Working Group Consensus Meeting and explores the possible treatment options available for different types of infections due to methicillin-resistant Staphylococcus aureus (MRSA), focusing on those antibiotics that could represent a valid alternative to vancomycin. In fact, whilst vancomycin remains a viable option, its therapy is moving towards individualised dosing. Other drugs, such as the new lipoglycopeptides (oritavancin, dalbavancin and telavancin) and fifth-generation cephalosporins (ceftaroline and ceftobiprole), are showing good in vitro potency and in vivo efficacy, especially for patients infected with micro-organisms with higher vancomycin minimum inhibitory concentrations (MICs)...
December 2016: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/27888123/acute-rhinosinusitis-during-hajj-season-2014-prevalence-of-bacterial-infection-and-patterns-of-antimicrobial-susceptibility
#15
Osama A Marglani, Ameen Z Alherabi, Islam R Herzallah, Faisal A Saati, Enas A Tantawy, Talal A Alandejani, Hani S Faidah, Naif A Bawazeer, Abdullah A Marghalani, Tariq A Madani
BACKGROUND: The presence of large number of pilgrims during Hajj in Makkah region increases the risk of respiratory diseases. In this study, we aimed to assess the bacteriology of acute rhinosinusitis (ARS) during Hajj season and to demonstrate the antimicrobial susceptibility patterns that should guide the clinicians towards more appropriate antibiotic use. METHODS: Patients with ARS presenting during Hajj season of 2014 were prospectively enrolled. According to EPOS2012 criteria...
November 23, 2016: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/27886280/starvation-and-antibiotics-induced-formation-of-persister-cells-in-pseudomonas-aeruginosa
#16
Patrik Mlynarcik, Milan Kolar
BACKGROUND: Planktonic stationary and exponential cultures of Pseudomonas aeruginosa are highly resistant to killing by bactericidal antimicrobials because of the presence of persisters, cells that are multidrug tolerant and play a key role in the recalcitrance of biofilm infections. AIM: The aim of this study was to investigate the formation of persister cells in P. aeruginosa stationary vs. exponential cultures using different class antimicrobials. METHODS: The susceptibilities of P...
November 23, 2016: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/27885442/patterns-and-trends-of-pediatric-bloodstream-infections-a-7-year-surveillance-study
#17
N Buetti, A Atkinson, L Kottanattu, J Bielicki, J Marschall, A Kronenberg
We characterize the epidemiology of pediatric bloodstream infections (BSIs) in Switzerland. We analyzed pathogen distribution and resistance patterns in monomicrobial and polymicrobial BSIs in children from 2008 to 2014 using data from the Swiss antibiotic resistance centre (ANRESIS). A confirmatory statistical analysis was performed comparing pathogens and resistance across 20 acute care hospitals. We identified 3,067 bacteremia episodes, of which 1,823 (59 %) were considered true BSI episodes. Overall, S...
November 24, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27881151/gentamicin-versus-ceftriaxone-for-the-treatment-of-gonorrhoea-g-tog-trial-study-protocol-for-a-randomised-trial
#18
Clare Brittain, Margaret Childs, Lelia Duley, Jan Harding, Trish Hepburn, Garry Meakin, Alan A Montgomery, Wei Tan, Jonathan D C Ross
BACKGROUND: Gonorrhoea is a common sexually transmitted infection which causes genital pain and discomfort; in women it can also lead to pelvic inflammatory disease and infertility, and in men to epididymo-orchitis. Current treatment is with ceftriaxone, but there is increasing evidence of antimicrobial resistance which is reducing its effectiveness against gonorrhoea. A small, but increasing, number of patients have already been found to have highly resistant strains of gonorrhoea which has been associated with clinical failure...
November 24, 2016: Trials
https://www.readbyqxmd.com/read/27875349/the-revival-of-old-antibiotics-for-treatment-of-uncomplicated-urinary-tract-infections-in-the-era-of-antibiotic-stewardship
#19
Jennifer Kranz, Sina Helbig, Falitsa Mandraka, Stefanie Schmidt, Kurt G Naber
PURPOSE OF REVIEW: In the era of increasing antibiotic resistance worldwide, this review highlights the advantages of revival of old antibiotics for treatment of uncomplicated urinary tract infections (uUTIs). RECENT FINDINGS: Recent studies have shown that these four oral old antibiotics, fosfomycin trometamol, nitrofurantoin, nitroxoline and pivmecillinam, show no increasing antibiotic resistance against uropathogens causing uUTI, are still effective for the treatment of uUTI and exhibit only minimal or no collateral damage as compared with fluoroquinolones or third-generation cephalosporines...
November 21, 2016: Current Opinion in Urology
https://www.readbyqxmd.com/read/27874971/cefiderocol-a-siderophore-cephalosporin-for-gram-negative-bacterial-infections-pharmacokinetics-and-safety-in-subjects-with-renal-impairment
#20
Takayuki Katsube, Roger Echols, Juan Camilo Arjona Ferreira, Heidi K Krenz, Jolene Kay Berg, Christopher Galloway
Cefiderocol, a new injectable siderophore cephalosporin antibiotic, has promising in vitro and in vivo activity against Gram-negative bacteria including multidrug-resistant Pseudomonas aeruginosa, Acinetobacter baumannii, and Klebsiella pneumoniae. Cefiderocol is mainly renally eliminated. The pharmacokinetics and safety of cefiderocol in subjects with renal impairment were assessed following a single 1000-mg intravenous 1-hour infusion of cefiderocol. Subjects with mild, moderate, or severe renal impairment and end-stage renal disease (ESRD) requiring hemodialysis were compared with demographically (age, body mass index, and sex) matched healthy subjects with normal renal function...
November 22, 2016: Journal of Clinical Pharmacology
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