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https://www.readbyqxmd.com/read/29788988/prevalence-and-antimicrobial-susceptibility-patterns-of-extended-spectrum-beta-lactamase-producing-entrobacteriaceae-in-the-university-of-gondar-referral-hospital-environments-northwest-ethiopia
#1
Tigist Engda, Feleke Moges, Aschalew Gelaw, Setegn Eshete, Feleke Mekonnen
OBJECTIVE: This study aimed at assessing the magnitude, distribution, and the antimicrobial susceptibility of the extended spectrum beta-lactamase producing Entrobacteriaceae in the University of Gondar Referral Hospital environments. RESULTS: Out of a total of 384 samples, 14.8% were ESBL producing Entrobacteriaceae, where 42.10% Klebsiella pneumoniae, 35.09% Escherchia coli and 7.01% Proteus mirabilis were the predominant isolates. Most ESBL producing isolates, that is, 24...
May 22, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29788022/hospitalizations-in-children-with-a-penicillin-allergy-label-an-assessment-of-healthcare-impact
#2
Bernardo Sousa-Pinto, Luís Araújo, Alberto Freitas, Luís Delgado
BACKGROUND: Beta-lactam allergy is overdiagnosed. Diagnosis of penicillin allergy has been associated with a greater use of hospital resources and an increased risk of antibiotic-resistant infections, although this issue remains poorly studied in children. We aimed to compare patient characteristics and use of hospital resources in hospitalized children with and without a record of penicillin allergy. METHODS: We identified all hospitalizations in children labelled as being allergic to penicillin in a database containing all hospitalizations in Portuguese public hospitals between 2000 and 2014, and compared these with a similar number of age-, sex-, and main diagnosis-matched hospitalizations without a penicillin allergy label...
May 22, 2018: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/29785131/epidemiology-susceptibility-and-risk-factors-for-acquisition-of-mdr-xdr-gram-negative-bacteria-among-kidney-transplant-recipients-with-urinary-tract-infections
#3
Xiuhong Yuan, Taohua Liu, Di Wu, Qiquan Wan
Background: Multiple drug resistant/extensively drug resistant (MDR/XDR) Gram-negative urinary tract infections (UTIs) represent a growing threat to kidney transplant recipients. This retrospective study aimed to assess the incidence and microbiological profile of MDR/XDR Gram-negative UTIs, to identify drug susceptibility of MDR/XDR bacteria, and to determine the potential risk factors for MDR/XDR UTIs in kidney recipients. Materials and methods: During the study period, 1569 patients underwent consecutive kidney transplantation in two transplantation centers...
2018: Infection and Drug Resistance
https://www.readbyqxmd.com/read/29784852/plasma-and-intrapulmonary-concentrations-of-cefepime-and-zidebactam-following-intravenous-administration-of-wck-5222-to-healthy-adult-subjects
#4
Keith A Rodvold, Mark H Gotfried, Rakesh Chugh, Mugdha Gupta, Anasuya Patel, Rajesh Chavan, Ravindra Yeole, H David Friedland, Ashima Bhatia
WCK 5222 is a combination of cefepime and the novel beta-lactam enhancer zidebactam being developed for the treatment of serious Gram-negative infections. The objective of this study was to compare plasma (total), epithelial lining fluid (ELF), and alveolar macrophage (AM) concentrations of cefepime and zidebactam in healthy adult subjects. The WCK 5222 dosing regimen was 2 grams cefepime/1 gram zidebactam administered as a 1-hour intravenous infusion every 8 hours for a total of 7 doses. Subjects were assigned to one bronchoalveolar lavage (BAL) sampling time at 0...
May 21, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29783881/lemierre-s-syndrome-a-case-study-with-a-short-review-of-literature
#5
Ken De Smet, Paul-Emile Claus, Gudrun Alliet, An Simpelaere, Geert Desmet
Objective and Importance Lemierre's syndrome (LS) is a rare condition that typically starts with a bacterial oropharyngeal infection complicated by a thrombophlebitis of the internal jugular vein and septic emboli to the lungs or other organs. The most common organism isolated is Fusobacterium necrophorum, although other causative organisms are isolated in rare cases. Case presentation We discuss a case of LS in a 44-year-old, previously healthy man presenting with an oropharyngeal infection. F. necrophorum was isolated from blood cultures and Computed tomography of the chest demonstrated septic emboli in the lungs...
May 21, 2018: Acta Clinica Belgica
https://www.readbyqxmd.com/read/29782199/bacteriolysis-a-mere-laboratory-curiosity
#6
Isaac Ginsburg, Erez Koren
The role of bacteriolysis in the pathophysiology of microbial infections dates back to 1893 when Buchner and Pfeiffer reported for the first time the lysis of bacteria by immune serum and related this phenomenon to the immune response. Later on, basic anti-microbial peptides and certain beta-lactam antibiotics have been shown not only to kill microorganisms but also to induce bacteriolysis and the release of cell-wall components. In 2009, a novel paradigm was offered suggesting that the main cause of death in sepsis is due to the exclusive release from activated human phagocytic neutrophils (PMNs) traps adhering upon endothelial cells of highly toxic nuclear histone...
May 21, 2018: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/29780851/top-questions-in-uncomplicated-non-staphylococcus-aureus-bacteremia
#7
Jesse D Sutton, Sena Sayood, Emily S Spivak
The Infectious Diseases Society of America infection-specific guidelines provide limited guidance on the management of focal infections complicated by secondary bacteremias. We address the following 3 commonly encountered questions and management considerations regarding uncomplicated bacteremia not due to Staphylococcus aureus : the role and choice of oral antibiotics focusing on oral beta-lactams, the shortest effective duration of therapy, and the role of repeat blood cultures.
May 2018: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/29776460/validation-of-the-betastar-%C3%A2-advanced-for-beta-lactams-test-kit-for-the-screening-of-bulk-tank-and-tanker-truck-milks-for-the-presence-of-beta-lactam-drug-residues
#8
Andrew Denhartigh, Lindsay Reynolds, Katherine Palmer, Frank Klein, Jennifer Rice, John J Rejman
A validation study was conducted for an immunochromatographic method (BetaStar® Advanced for Beta-lactams) for the detection of beta-lactam residues in raw, commingled bovine milk. The assay detected amoxicillin, ampicillin, cloxacillin, penicillin, cephapirin, and ceftiofur below the U.S. Food and Drug Administration tolerance levels but above the maximum sensitivity thresholds established by the National Conference on Interstate Milk Shipments. The results of internal and independent laboratory dose-response studies employing spiked samples were in agreement...
May 18, 2018: Journal of AOAC International
https://www.readbyqxmd.com/read/29774477/cefepime-vs-cefoperazone-sulbactam-in-combination-with-amikacin-as-empirical-antibiotic-therapy-in-febrile-neutropenia
#9
M Ponraj, Biswajit Dubashi, B H Harish, S Kayal, S L Cyriac, Jogamaya Pattnaik, K Ranjith, Unni S Pillai, Naresh Jadhav, Kiran K Matta, Jagdeep Singh, Esha Jaffa, Bhanu Prakash
PURPOSE: Beta lactams are standard empirical therapy for febrile neutropenia (FN). The aim of this study was to evaluate the efficacy and safety of cefepime monotherapy compared with cefoperazone/sulbactam plus amikacin (CS + A) for empirical treatment of high risk FN. METHODS: One hundred seventy-five patients with 336 FN episodes were randomized to receive either cefepime (2 g q8h for adults and 50 mg/kg q8h for children) or CS (2 g q8h for adults and 50 mg/kg q8h for children) plus amikacin (15 mg/kg once a day)...
May 17, 2018: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/29758354/isaba1-and-tn6168-acquisition-by-natural-transformation-leads-to-third-generation-cephalosporins-resistance-in-acinetobacter-baumannii
#10
Sara Domingues, Natasha Rosário, Hadhemi Ben Cheikh, Gabriela Jorge Da Silva
Acinetobacter baumannii has intrinsic beta-lactamase genes, namely ampC and blaOXA-51 -like, which are only strongly expressed when the ISAba1 insertion sequence is upstream the 5' end of the genes. A second ampC gene has also been identified in some clinical A. baumannii strains. The increased expression of these genes leads to resistance to beta-lactams, including third-generation cephalosporins and/or carbapenems. The aim of this work was to assess the involvement of natural transformation in the transfer of chromosomal ampC-associated mobile elements, and related changes in the resistance profile of recipient cells...
May 11, 2018: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29756762/molecular-properties-that-define-the-activities-of-antibiotics-in-escherichia-coli-and-pseudomonas-aeruginosa
#11
Sarah J Cooper, Ganesh Krishnamoorthy, David Wolloscheck, John K Walker, Valentin V Rybenkov, Jerry M Parks, Helen I Zgurskaya
The permeability barrier of Gram-negative cell envelopes is the major obstacle in the discovery and development of new antibiotics. In Gram-negative bacteria, these difficulties are exacerbated by the synergistic interaction between two biochemically distinct phenomena, the low permeability of the outer membrane (OM) and active multidrug efflux. In this study, we used Pseudomonas aeruginosa and Escherichia coli strains with controllable permeability barriers-achieved through hyperporination of the OMs and varied efflux capacities-to evaluate the contributions of each of the barriers to protection from antibacterials...
May 14, 2018: ACS Infectious Diseases
https://www.readbyqxmd.com/read/29754026/precipitation-influences-pathogenic-bacteria-and-antibiotic-resistance-gene-abundance-in-storm-drain-outfalls-in-coastal-sub-tropical-waters
#12
Warish Ahmed, Qian Zhang, Aldo Lobos, Jacob Senkbeil, Michael J Sadowsky, Valerie J Harwood, Nazanin Saeidi, Oswald Marinoni, Satoshi Ishii
Stormwater contamination can threaten the health of aquatic ecosystems and human exposed to runoff via nutrient and pathogen influxes. In this study, the concentrations of 11 bacterial pathogens and 47 antibiotic resistance genes (ARGs) were determined by using high-throughput microfluidic qPCR (MFQPCR) in several storm drain outfalls (SDOs) during dry and wet weather in Tampa Bay, Florida, USA. Data generated in this study were also compared with the levels of fecal indicator bacteria (FIB) and sewage-associated molecular markers (i...
May 10, 2018: Environment International
https://www.readbyqxmd.com/read/29752649/risk-factors-for-pneumonia-due-to-beta-lactam-susceptible-and-beta-lactam-resistant-pseudomonas-aeruginosa-a-case-case-control-study
#13
Mohammed J Al-Jaghbeer, Julie Ann Justo, William Owens, Joseph Kohn, P Brandon Bookstaver, Jennifer Hucks, Majdi N Al-Hasan
PURPOSE: This case-case-control study aims to identify clinical predictors for pneumonia due to Pseudomonas aeruginosa (PA) which is (1) susceptible to all routinely tested antipseudomonal beta-lactams (APBL-S) and (2) resistant to at least one antipseudomonal beta-lactam (APBL-R). METHODS: Hospitalized adults with acute bacterial pneumonia at Palmetto Health hospitals in Columbia, SC, USA from January 1, 2012 to April 15, 2014 were identified. Multivariate logistic regression was used to determine risk factors for pneumonia due to APBL-S PA and APBL-R PA...
May 11, 2018: Infection
https://www.readbyqxmd.com/read/29751164/tracking-antibiotic-resistome-during-wastewater-treatment-using-high-throughput-quantitative-pcr
#14
Xin-Li An, Jian-Qiang Su, Bing Li, Wei-Ying Ouyang, Yi Zhao, Qing-Lin Chen, Li Cui, Hong Chen, Michael R Gillings, Tong Zhang, Yong-Guan Zhu
Wastewater treatment plants (WWTPs) contain diverse antibiotic resistance genes (ARGs), and thus are considered as a major pathway for the dissemination of these genes into the environments. However, comprehensive evaluations of ARGs dynamic during wastewater treatment process lack extensive investigations on a broad spectrum of ARGs. Here, we investigated the dynamics of ARGs and bacterial community structures in 114 samples from eleven Chinese WWTPs using high-throughput quantitative PCR and 16S rRNA-based Illumina sequencing analysis...
May 8, 2018: Environment International
https://www.readbyqxmd.com/read/29749367/use-of-succinic-oxalic-acid-in-reducing-the-dosage-of-colistin-against-new-delhi-metallo-%C3%AE-lactamase-1-bacteria
#15
Ravichandiran Kumar, Brinda Chandar, Madasamy Parani
Background & objectives: New Delhi metallo-β-lactamase 1 (NDM-1) cleaves the beta-lactam ring, and confers bacterial resistance against most of the beta-lactam antibiotics, except tigecycline and colistin. Among these two antibiotics, colistin is considered toxic, and therefore, its clinical use and dosage need cautious approach. In the present study, six organic acids were screened individually and in combination of two acids for their effectiveness against NDM-1 Escherichia coli and a combination of colistin and oxalic or succinic acid was tested to find out the potential of combination therapy for reducing the dose of toxic colistin...
January 2018: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/29746711/a-monte-carlo-simulation-approach-for-beta-lactam-dosing-in-critically-ill-patients-receiving-prolonged-intermittent-renal-replacement-therapy
#16
Soo Min Jang, Katherine N Gharibian, Susan J Lewis, William H Fissell, Ashita J Tolwani, Bruce A Mueller
Cefepime, ceftazidime, and piperacillin/tazobactam are commonly used beta-lactam antibiotics in the critical care setting. For critically ill patients receiving prolonged intermittent renal replacement therapy (PIRRT), limited pharmacokinetic data are available to inform clinicians on the dosing of these agents. Monte Carlo simulations (MCS) can be used to guide drug dosing when pharmacokinetic trials are not feasible. For each antibiotic, MCS using previously published pharmacokinetic data derived from critically ill patients was used to evaluate multiple dosing regimens in 4 different prolonged intermittent renal replacement therapy effluent rates and prolonged intermittent renal replacement therapy duration combinations (4 L/h × 10 hours or 5 L/h × 8 hours in hemodialysis and hemofiltration modes)...
May 10, 2018: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29745792/neonates-are-not-just-little-children-and-need-more-finesse-in-dosing-of-antibiotics
#17
Karel Allegaert, John van den Anker
OBJECTIVES: Neonates are not just little children. They need more finesse in decisions on when to treat, which antibiotics to use and how to dose these antibiotics. METHODS: Representative compounds of three major classes of antibiotics (beta-lactams, aminoglycosides, glycopeptides) are discussed in a narrative review to illustrate the recent progress in the knowledge on PK and its covariates (how to dose). RESULTS: This knowledge can subsequently be converted to targeted exposure dosing regimens...
May 10, 2018: Acta Clinica Belgica
https://www.readbyqxmd.com/read/29744228/successful-treatment-of-high-level-aminoglycoside-resistant-enterococcus-faecalis-bacteremia-in-a-preterm-infant-with-ampicillin-and-cefotaxime
#18
Jennifer Tam, Santina J Lee, Vibhuti Shah, Shaun K Morris
Enterococcal bloodstream infections are usually treated with single-agent antibiotics. In persistent infections, synergistic combination therapy is often required with a beta-lactam and an aminoglycoside antibiotic. High-level aminoglycoside-resistant (HLAR) enterococci are increasingly prevalent and preclude the use of this combination. The use of ampicillin with a third-generation cephalosporin to treat endovascular HLAR Enterococcus infections is becoming more established in the adult population; however, the literature on treatment of such infections in children remains scarce...
2018: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/29737548/prevotella-strains-and-lactamic-resistance-gene-distribution-in-different-oral-environments-of-children-with-pulp-necrosis
#19
B Roese de Lima, G F Nicoloso, C C Fatturi-Parolo, M B C Ferreira, F Montagner, L Casagrande
AIM: To determine the presence of Prevotella species, the cfxA/cfxA2, blaZ and blaTEM genes associated with resistance to lactamic agents in different oral niches of children with pulp necrosis. METHODOLOGY: Children with pulp necrosis in primary teeth had samples of saliva, supragingival, pulp chamber and root canal biofilms collected and tested for Prevotella species (P. intermedia, P nigrescens, P. tannerae) and for beta-lactam resistance genes (cfxA / cfxA2, blaZ and blaTEM)...
May 8, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29736236/temporal-relationship-between-antibiotic-use-and-respiratory-virus-activities-in-the-republic-of-korea-a-time-series-analysis
#20
Sukhyun Ryu, Sojung Kim, Bryan I Kim, Eili Y Klein, Young Kyung Yoon, Byung Chul Chun
Background: Inappropriate use of antibiotics increases resistance and reduces their effectiveness. Despite evidence-based guidelines, antibiotics are still commonly used to treat infections likely caused by respiratory viruses. In this study, we examined the temporal relationships between antibiotic usage and respiratory infections in the Republic of Korea. Methods: The number of monthly antibiotic prescriptions and the incidence of acute respiratory tract infections between 2010 and 2015 at all primary care clinics were obtained from the Korean Health Insurance Review and Assessment Service...
2018: Antimicrobial Resistance and Infection Control
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