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https://www.readbyqxmd.com/read/29137487/emergence-of-fosfomycin-resistance-among-isolates-of-escherichia-coli-harboring-extended-spectrum-and-ampc-%C3%AE-lactamases
#1
Aghil Bahramian, Gita Eslami, Ali Hashemi, Ali Tabibi, Mohsen Heidary
Urinary tract infection (UTI) is a common type of infectious disease globally. The aim of this study was to detect the frequency of fosA3 and fosC2 genes in extended-spectrum β-lactamases (ESBL) and blaDHA, blaCMY-2, and blaCMY-42 genes in AmpC β-lactamases-producing isolates of Escherichia coli. In total, 120 isolates of E. coli were collected from three teaching hospitals between March 2014 and February 2015. Antibiotic susceptibility tests were carried out by disk diffusion method. The presence of blaCMY-2, blaCMY-42, blaDHA, fosA3, and fosC2 genes was detected by polymerase chain reaction (PCR) and sequencing...
November 15, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/29111793/rapid-onset-intracranial-hypertension-in-a-young-woman-after-starting-nitrofurantoin
#2
Patrick Hughes, Sui Wong
No abstract text is available yet for this article.
November 2, 2017: British Journal of Hospital Medicine
https://www.readbyqxmd.com/read/29111434/empiric-treatment-of-lower-urinary-tract-infections-in-the-face-of-spreading-multi-drug-resistance-in-vitro-study-of-nitroxoline-effectiveness
#3
A Sobke, O Makarewicz, M Baier, C Bär, W Pfister, S G Gatermann, M W Pletz, C Forstner
The spread of antimicrobial resistance challenges the empiric treatment in urinary tract infections (UTI). Among others, nitrofurantoin is recommended for first line treatment, but acceptance among clinicians is limited due to chronic nitrofurantoin-induced lung toxicity and insufficient coverage of Enterobacteriaceae other than Escherichia coli. Nitroxoline seems to be an alternative to nitrofurantoin due to its favourable safety profile but data on its current in vitro susceptibility are sparse. In this study susceptibility to nitroxoline was tested against 3,012 urinary clinical isolates (including multidrug-resistant bacteria and Candida spp...
October 27, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/29109580/fosfomycin-susceptibility-in-multidrug-resistant-enterobacteriaceae-species-and-vancomycin-resistant-enterococci-urinary-isolates
#4
Linda B Ou, Lynn Nadeau
Background: Broad-spectrum antibiotics are often used to treat urinary tract infections (UTIs) due to drug-resistant species of Enterobacteriaceae and Enterococcus (e.g., organisms producing extended-spectrum β-lactamase [ESBL] or AmpC β-lactamase, as well as vancomycin-resistant enterococci [VRE]). However, this type of therapy can promote selection of resistant organisms and may necessitate venous access. Fosfomycin is an orally administered, single-dose antibiotic for the treatment of uncomplicated UTI...
September 2017: Canadian Journal of Hospital Pharmacy
https://www.readbyqxmd.com/read/29102703/on-the-role-of-salt-formation-and-structural-similarity-of-co-formers-in-co-amorphous-drug-delivery-systems
#5
Wenqi Wu, Korbinian Löbmann, Thomas Rades, Holger Grohganz
Co-amorphous drug delivery systems based on amino acids as co-formers have shown promising potential to improve the solubility and bioavailability of poorly water-soluble drugs. Potential salt formation is assumed to be a key molecular interaction responsible for amorphous stability and increased solubility. However, little is known about the importance of the overall structure of the co-former. In this study, the structurally related amino acids arginine (basic) and citrulline (neutral) were chosen together with four model drugs (acidic furosemide and nitrofurantoin; basic cimetidine and mebendazole) to investigate the importance of salt formation versus structural similarity of co-formers...
November 2, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29091200/patterns-of-dispensed-non-medical-prescriber-prescriptions-for-antibiotics-in-primary-care-across-england-a-retrospective-analysis
#6
Molly Courtenay, David Gillespie, Rosemary Lim
Objectives: To describe the patterns of dispensed non-medical prescriber (NMP) prescriptions for antibiotics in primary care across England between 2011 and 2015. Methods: A retrospective analysis of dispensed antibiotic prescriptions, written by NMPs and medical prescribers between 2011 and 2015 in primary care in England, obtained from the National Health Service Business Services Authority. Results: Between 2011 and 2015, the number of NMPs (mainly nurses but also pharmacists and small numbers of allied health professionals) in England, who have independent prescribing capability, has risen by over one-third to nearly 30000...
October 1, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29079976/bacterial-isolates-from-the-arctic-region-pasvik-river-norway-assessment-of-biofilm-production-and-antibiotic-susceptibility-profiles
#7
Pasqualina Laganà, Ludovica Votano, Gabriella Caruso, Maurizio Azzaro, Angelina Lo Giudice, Santi Delia
Bacterial biofilm production is recognized as a strategy that helps aquatic bacteria in resisting to the presence of several kinds of pollutants, including antibiotics, in the bulk environment. The Pasvik River, located between Norway, Russia and Finland, is a sub-Arctic site polluted by wastes from metallurgic and mining activities. In order to study whether and to what extent bacteria are able to produce biofilms, and to assess whether this physiological characteristic influences their resistance to antibiotics, an investigation was performed on bacteria isolated from water and sediment collected along the Pasvik River course during two surveys (May and July)...
October 27, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29064348/the-activity-of-fosfomycin-against-extended-spectrum-beta-lactamase-producing-isolates-of-enterobacteriaceae-recovered-from-urinary-tract-infections-a-single-center-study-over-a-period-of-12-years
#8
Parisa Aris, Mohammad Ali Boroumand, Mohammad Rahbar, Masoumeh Douraghi
Despite global efforts to tackle resistance in extended-spectrum beta-lactamase (ESBL)-producing isolates via old antibiotics, there are limited data on the efficacy of fosfomycin-an old oral antibiotic-against Enterobacteriaceae in the Middle East. The purpose of this study was to evaluate the in vitro activity of fosfomycin against urinary ESBL-producing isolates of Enterobacteriaceae. Between 2004 and 2015, 363 isolates of ESBL-producing Enterobacteriaceae were recovered from high-risk patients suffering from cardiac disorders and were subjected to polymerase chain reaction using specific primers for the blaTEM, blaSHV, and blaCTX-M genes...
October 24, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/29054298/antimicrobial-resistance-in-community-acquired-urinary-tract-infections-in-paris-in-2015
#9
D Chervet, O Lortholary, J-R Zahar, A Dufougeray, B Pilmis, H Partouche
BACKGROUND: Urinary tract infection (UTI) is one of the most frequent community-acquired infection. Escherichia coli resistance has been on the rise since 2000s. METHODS: We conducted a prospective multicenter cohort study including adults who had a positive urine cytobacteriological examination (UCBE) performed in our Parisian suburb laboratory platform from October 2014 to March 2015. RESULTS: A total of 1223 patients were included: 995 (81...
October 17, 2017: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/29040608/risk-factors-for-resistance-and-mdr-in-community-urine-isolates-population-level-analysis-using-the-nhs-scotland-infection-intelligence-platform
#10
William Malcolm, Eilidh Fletcher, Kimberley Kavanagh, Ashutosh Deshpande, Camilla Wiuff, Charis Marwick, Marion Bennie
Background: Urinary tract infections (UTIs) are common. Antibiotic treatment is usually empirical, with the risk of under-treatment of resistant infections. Objectives: To characterize risk factors for antibiotic-resistant community urine isolates using routine record-linked health data. Methods: Within the NHS Scotland Infection Intelligence Platform, national surveillance patient-level data on community urine isolates (January 2012-June 2015) were linked to hospital activity and community prescribing data...
October 10, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29037164/local-epidemiology-and-resistance-profiles-in-acute-uncomplicated-cystitis-auc-in-women-a-prospective-cohort-study-in-an-urban-urological-ambulatory-setting
#11
Michael Seitz, Christian Stief, Raphaela Waidelich
BACKGROUND: Acute uncomplicated cystitis (AUC) is a common ailment in the urological setting. Guidelines for urinary tract infections are based on large-scale multi-centre, epidemiological and international studies. The objective of this observational study was to establish whether the results of a multi-centre study on the resistance profile of Escherichia coli (E. coli) in patients with AUC could be directly applied to an urological practice in a major European city or whether there are divergences in the resistance profile...
October 16, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28993064/antimicrobial-susceptibility-of-microorganisms-that-cause-urinary-tract-infections-in-pediatric-patients
#12
Jesús Rodríguez-Lozano, Ana de Malet, María Eliecer Cano, Luis de la Rubia, Reinhard Wallmann, Luis Martínez-Martínez, Jorge Calvo
INTRODUCTION: Cumulative susceptibility reports are a valuable tool for the empirical treatment of urinary tract infections, especially in the current context of increasing resistance rates. Our objective was to analyze the antimicrobial susceptibility of bacterial isolates in urine cultures of pediatric patients during a five-year period. METHODS: Retrospective study of urine cultures from 2011 to 2015. Identification and antimicrobial susceptibility tests were performed using the Vitek-2 system (BioMérieux(®)) and categorized according to EUCAST criteria...
October 6, 2017: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/28992981/extended-spectrum-beta-lactamase-producing-escherichia-coli-and-klebsiella-pneumoniae-from-urinary-tract-infections-evolution-of-antimicrobial-resistance-and-treatment-options
#13
Gemma Jiménez-Guerra, Víctor Heras-Cañas, Lucía Del Carmen Béjar Molina, Antonio Sorlózano-Puerto, José María Navarro-Marí, José Gutiérrez-Fernández
BACKGROUND AND OBJECTIVES: A study of the susceptibility to antimicrobials of the extended spectrum beta-lactamase phenotypes (ESBL) in Escherichia coli and Klebsiella spp. was performed to discover the evolution of this type of resistance from urinary tract infections. MATERIAL AND METHOD: A retrospective study was carried out between 2012 and 2016. Susceptibility to ciprofloxacin, tobramycin, cefoxitin, fosfomycin, nitrofurantoin, co-trimoxazole, and carbapenems was analyzed using MicroScan(®) system...
October 7, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/28984451/membrane-active-hydantoin-derivatives-as-antibiotic-agents
#14
Ma Su, Donglin Xia, Peng Teng, Alekhya Nimmagadda, Chao Zhang, Timothy Odom, Annie Cao, Yong Hu, Jianfeng Cai
Hydantoin (imidazolidinedione) derivatives such as nitrofurantoin are small molecules that have aroused considerable interest recently due to their low rate of bacterial resistance. However, their moderate antimicrobial activity may hamper their application combating antibiotic resistance in the long run. Herein, we report the design of bacterial membrane-active hydantoin derivatives, from which we identified compounds that show much more potent antimicrobial activity than nitrofurantoin against a panel of clinically relevant Gram-positive and Gram-negative bacterial strains...
October 6, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28975103/evaluating-the-resistance-pattern-of-gram-negative-bacteria-during-three-years-at-the-nephrology-ward-of-a-referral-hospital-in-southwest-of-iran
#15
Iman Karimzadeh, Niloofar Sadeghimanesh, Mona Mirzaee, Mohammad Mahdi Sagheb
BACKGROUND: Gram-negative bacteria are associated with an increase in rates of antibacterial resistance. In most low- and middle-income countries such as Iran, there is no continuous surveillance system for antibiotic resistance. OBJECTIVE: The purpose of this survey was to determine the pattern of antimicrobial sensitivity of gram-negative bacteria within 3 consecutive years at a nephrology ward of Nemazee hospital in Shiraz. MATERIALS AND METHODS: During a 3-year period from 2013 to 2015 at the adult nephrology ward, bacteriological data of all biological samples of hospitalized patients in favor of gram-negative microorganisms were analyzed retrospectively...
July 2017: Journal of Nephropathology
https://www.readbyqxmd.com/read/28966488/changing-prevalence-and-antibiotic-drug-resistance-pattern-of-pathogens-seen-in-community-acquired-pediatric-urinary-tract-infections-at-a-tertiary-care-hospital-of-north-india
#16
Vrushali Patwardhan, Dinesh Kumar, Varun Goel, Sarman Singh
AIMS AND OBJECTIVES: The aim and objective of this study was to assess the temporal changes in the microbiological profiles and antimicrobial resistance patterns of uropathogens in pediatric community-acquired UTI. MATERIALS AND METHODS: This is a retrospective analysis of data collected over a Scattered period of 5 years. The baseline data collected were from January to December 2009, and the second period considered for comparison was from January to December 2014...
October 2017: Journal of Laboratory Physicians
https://www.readbyqxmd.com/read/28963445/molecular-characterization-of-antimicrobial-multi-drug-resistance-in-non-typhoidal-salmonellae-from-chicken-and-clam-in-mangalore-india
#17
Yemisi Olukemi Adesiji, Santhosh Kogaluru Shivakumaraswamy, Vijaya Kumar Deekshit, Girisha Shivani Kallappa, Indrani Karunasagar
Salmonella enterica has been documented as one of the leading causes of salmonellosis throughout the world and is most commonly associated with the consumption of contaminated food products. Thus, this research was aimed at studying the antimicrobial susceptibility pattern and detection of quinolone resistance in Salmonella spp isolated from food of animal origin. Thirty-six Salmonella isolates comprising 8 from poultry and 28 from seafood (clams) were identified, serotyped and characterized for their antimicrobial susceptibility against 10 different antibiotics...
September 30, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28962789/the-effect-of-hpmc-and-mc-as-pore-formers-on-the-rheology-of-the-implant-microenvironment-and-the-drug-release-in-vitro
#18
Johanna Aho, Amanda Halme, Johan Boetker, Jorrit Jeroen Water, Adam Bohr, Niklas Sandler, Jukka Rantanen, Stefania Baldursdottir
Porous implants or implantable scaffolds used for tissue regeneration can encourage tissue growth inside the implant and provide extended drug release. Water-soluble polymers incorporated into a biodegradable or inert implant matrix may leach out upon contact with biological fluids and thereby gradually increasing the porosity of the implant and simultaneously release drug from the implant matrix. Different molecular weight grades of methylcellulose (MC) and hydroxypropyl methylcellulose (HPMC) were mixed with polylactide and extruded into model implants containing nitrofurantoin as a model drug...
December 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28961900/pharmacodynamics-of-nitrofurantoin-at-different-ph-levels-against-pathogens-involved-in-urinary-tract-infections
#19
Fiona Fransen, Maria J B Melchers, Claudia M C Lagarde, Joseph Meletiadis, Johan W Mouton
Background: Urinary tract infections are among the most common human infections. Due to the progressive increase in ESBL-producing bacteria and the unavailability of new antibiotics, re-evaluation of 'old' antibiotics is needed. However, the pharmacodynamics of nitrofurantoin under variable pH conditions are poorly understood. We determined the pharmacodynamic properties of nitrofurantoin at different pH levels using time-kill assays. Methods: Time-kill assays were performed at four pH levels (5...
September 11, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28922100/frequency-and-antibiotic-resistance-of-bacteria-implicated-in-community-urinary-tract-infections-in-north-aveiro-between-2011-and-2014
#20
Tânia Costa, Inês Linhares, Ricardo Ferreira, Jasmin Neves, Adelaide Almeida
AIMS: The present study aims to evaluate the predominance of uropathogens responsible for urinary tract infection (UTI) and determine their resistance patterns, to assess if the recommended empirical treatment is appropriate for the studied population. Samples were collected in Aveiro (Portugal) from an ambulatory service between June 2011 and June 2014. RESULTS: From the 4,270 positive urine samples for UTI, 3,561 (83%) were from women and only 709 (17%) were from men...
September 18, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
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