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https://www.readbyqxmd.com/read/27920754/culture-based-screening-of-aerobic-microbiome-in-diabetic-foot-subjects-and-developing-non-healing-ulcers
#1
Saba Noor, Jamal Ahmad, Iqbal Parwez, Maaz Ozair
The study was carried on diabetic foot patients to deduce clinical attributes, the occurrence of the range of aerobic microbial flora and to assess their comparative in vitro susceptibility to the customarily used antimicrobials. We also studied the potential risk factors involved in the development of non-healing ulcers. A total of 87 organisms were isolated from 70 specimens, including Escherichia coli (19.5%) among the Gram-negative and Staphylococcus aureus (18.4%) among the Gram-positive as the predominant aerobes explored...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27915986/molecular-analysis-of-pseudomonas-aeruginosa-metallo-beta-lactamase-a-first-report-of-an-iranian-referral-pediatric-hospital
#2
Shima Mahmoudi, Babak Pourakbari, Mansoure Hosseini, Amir Esmaeil Alyari, Mohammad Taghi Haghi Ashtiani, Setareh Mamishi
INTRODUCTION: Pseudomonas aerouginosa is an important opportunistic pathogen causes clinical infections among ill patients. Metallo- Beta- lactamases (MBLs) are important mechanisms of carbapenem (drug of choice) resistance among Pseudomonas aerouginosa isolates. The aim of this study was to determine B- lactamases genes (bla-genes) in P. aerouginosa isolates and to detect percentage of MBLs among P. aerouginosa isolates in different wards. MATERIAL AND METHODS: Clinical isolates of P...
December 2, 2016: Infectious Disorders Drug Targets
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
#3
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/27895015/protective-effects-of-human-and-mouse-soluble-scavenger-like-cd6-lymphocyte-receptor-in-a-lethal-model-of-polymicrobial-sepsis
#4
Mario Martínez-Florensa, Marta Consuegra-Fernández, Fernando Aranda, Noelia Armiger-Borràs, Marianna Di Scala, Esther Carrasco, Jerónimo Pachón, Jordi Vila, Gloria González-Aseguinolaza, Francisco Lozano
Sepsis still constitutes an unmet clinical need, which could benefit from novel adjunctive strategies to conventional antibiotic therapy. The soluble form of the scavenger-like human CD6 lymphocyte receptor (shCD6) binds to key pathogenic components from Gram-positive and -negative bacteria, and shows time- and dose-dependent efficacy in mouse models of monobacterial sepsis. The objective of the present work was to demonstrate the effectiveness of infusing mouse and human sCD6 by different systemic routes, either alone or as adjunctive therapy to gold-standard antibiotics, in a lethal model of polymicrobial sepsis...
November 28, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27890724/clinical-characteristics-and-antimicrobial-susceptibilities-of-anaerobic-bacteremia-in-an-acute-care-hospital
#5
Thean Yen Tan, Lily Siew Yong Ng, Lee Ling Kwang, Suma Rao, Li Ching Eng
: This study investigated the clinical features of anaerobic bacteraemia in an acute-care hospital, and evaluated the antimicrobial susceptibility of these isolates to commonly available antibiotics. MATERIALS & METHODS: Microbiological and epidemiological data from 2009-2011were extracted from the laboratory information system and electronic medical records. One hundred and eleven unique patient episodes consisting of 116 anaerobic isolates were selected for clinical review and antibiotic susceptibility testing...
November 24, 2016: Anaerobe
https://www.readbyqxmd.com/read/27886280/starvation-and-antibiotics-induced-formation-of-persister-cells-in-pseudomonas-aeruginosa
#6
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/27882088/study-on-the-resistance-mechanism-via-outer-membrane-protein-oprd2-and-metal-%C3%AE-lactamase-expression-in-the-cell-wall-of-pseudomonas-aeruginosa
#7
Shuangqi Cai, Yiqiang Chen, Dezhi Song, Jinliang Kong, Yanbin Wu, Huasong Lu
The aim of the present study was to evaluate the imipenem-resistant mechanism via the outer membrane protein (OMP) OprD2 and metal β-lactamase expression in the cell wall of Pseudomonas aeruginosa. The Pseudomonas aeruginosa was clinically separated and validated by VITEK-2 full-automatic bacteria analyzer. Drug resistance, sensitive antibiotics and minimum inhibitory concentration (MIC) were tested using the drug sensitivity analysis system. The phenotype positive strains of MBL genes were screened using the Kirby-Bauer diffusion method by adding metal ion-chelating agent EDTA on the imipenem susceptibility paper...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27881616/performance-of-vitek%C3%A2-2-for-antimicrobial-susceptibility-testing-of-acinetobacter-baumannii-pseudomonas-aeruginosa-and-stenotrophomonas-maltophilia-with-vitek%C3%A2-2-2009-fda-and-clsi-m100s-26th-edition-breakpoints
#8
April M Bobenchik, Eszter Deak, Janet A Hindler, Carmen L Charlton, Romney M Humphries
Performance of Vitek 2 AST-GN69 and AST-XN06 cards was compared to Clinical and Laboratory Standards Institute (CLSI) reference broth microdilution (BMD) for 99 isolates of Pseudomonas aeruginosa, 26 Acinetobacter baumannii and 11 Stenotrophomonas maltophilia In total 15 antimicrobials were evaluated, 11 for P. aeruginosa, 14 for A. baumannii, and 2 for S. maltophilia. Categorical agreement (CA) was assessed using both Vitek 2 breakpoints and 2016 CLSI M100S 26(th) edition breakpoints. Essential agreement for P...
November 23, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27879561/late-therapeutic-intervention-with-antibiotics-and-fluid-resuscitation-allows-for-a-prolonged-disease-course-with-high-survival-in-a-severe-murine-model-of-sepsis
#9
Allison M Steele, Marlene E Starr, Hiroshi Saito
Current animal models of sepsis often incorporate antibiotics to be consistent with clinical standards for treatment of patients in the ICU. However, such experimental intervention is commonly initiated very early after infectious insult, which likely blunts the progression of systemic inflammation and downstream pathology. The objective of this study was to establish an animal model of sepsis with delayed therapeutic intervention, allowing a longer disease course and downstream pathology, but still resulting in a high survival rate...
November 22, 2016: Shock
https://www.readbyqxmd.com/read/27873565/patterns-of-virulence-factor-expression-and-antimicrobial-resistance-in-achromobacter-xylosoxidans-and-achromobacter-ruhlandii-isolates-from-patients-with-cystic-fibrosis
#10
R H V Pereira, R S Leão, A P Carvalho-Assef, R M Albano, E R A Rodrigues, M C Firmida, T W Folescu, M C Plotkowski, V G Bernardo, E A Marques
Achromobacter spp. are opportunistic pathogens increasingly recovered from adult patients with cystic fibrosis (CF). We report the characterization of 122 Achromobacter spp. isolates recovered from 39 CF patients by multilocus sequence typing, virulence traits, and susceptibility to antimicrobials. Two species, A. xylosoxidans (77%) and A. ruhlandii (23%) were identified. All isolates showed a similar biofilm formation ability, and a positive swimming phenotype. By contrast, 4·3% and 44·4% of A. xylosoxidans and A...
November 22, 2016: Epidemiology and Infection
https://www.readbyqxmd.com/read/27867083/trends-in-antimicrobial-resistance-among-bacteroides-species-and-parabacteroides-species-in-the-united-states-from-2010-2012-with-comparison-to-2008-2009
#11
REVIEW
D R Snydman, N V Jacobus, L A McDermott, E J C Goldstein, L Harrell, S G Jenkins, D Newton, R Patel, D W Hecht
The susceptibility trends for Bacteroides fragilis and related species against various antibiotics were determined using data from 3 years of surveillance (2010-2012) on 779 isolates referred by 7 medical centers. The antibiotic test panel included imipenem, ertapenem, meropenem, ampicillin-sulbactam, piperacillin-tazobactam, cefoxitin, clindamycin, moxifloxacin, tigecycline, linezolid, chloramphenicol and . MICs were determined using the agar dilution CLSI reference method. Carbapenem resistance remained low (range 1...
November 17, 2016: Anaerobe
https://www.readbyqxmd.com/read/27866753/-molecular-epidemiology-of-carbapenemase-producing-enterobacteriaceae-infection-colonisation-in-a-hospital-in-madrid
#12
Patricia Brañas, Marta Gil, Jennifer Villa, María Ángeles Orellana, Fernando Chaves
INTRODUCTION: A description is presented on the molecular epidemiology of carbapenemase-producing enterobacteriaceae infection in a tertiary hospital. MATERIAL AND METHODS: A study was made on all the carbapenemase-producing enterobacteriaceae isolations obtained between February 2015 and March 2016 in the Hospital Universitario 12 de Octubre (Madrid). Phenotypic and molecular methods were used. RESULTS: A total of 7 bacterial species were identified, with the majority being Klebsiella pneumoniae (K...
November 17, 2016: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/27863949/imipenem-avibactam-a-novel-combination-for-the-rapid-detection-of-carbapenemase-activity-in-enterobacteriaceae-and-acinetobacter-baumannii-by-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry
#13
Marina Oviaño, Germán Bou
In the present study, we propose a novel matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS)-based method for detecting carbapenemase-producing Enterobacteriaceae and Acinetobacter baumannii. For this, we analyzed a series of 131 isolates. Among them, a total of 115 Enterobacteriaceae: 79 of them carrying a carbapenemase enzyme (15blaKPC, 7blaNDM, 11blaIMP, 12blaVIM, and 34blaOXA-48) and 16 A. baumannii isolates: 15 of them carrying carbapenemases (10blaOXA-23, 2blaOXA-58, 2blaOXA-24, and 1blaOXA-237)...
October 18, 2016: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/27862103/pharmacokinetics-of-imipenem-cilastatin-burn-intensive-care-unit-patients-undergoing-high-dose-continuous-venovenous-hemofiltation
#14
Bradley A Boucher, Joanna Q Hudson, David M Hill, Joseph M Swanson, G Christopher Wood, S Casey Laizure, Angela Arnold-Ross, Zhe-Yi Hu, William L Hickerson
STUDY OBJECTIVE: High dose continuous venovenous hemofiltration (CVVH) is a continuous renal replacement therapy (CRRT) used frequently inpatients with burns. However, antibiotic dosing is based on inference from studies assessing substantially different methods of CRRT. To address this knowledge gap for imipenem/cilastatin (I-C) we evaluated the systemic and extracorporeal clearances (CL) of I-C in patients with burns undergoing high dose CVVH. DESIGN: Prospective clinical pharmacokinetic study...
November 9, 2016: Pharmacotherapy
https://www.readbyqxmd.com/read/27858922/emphysematous-cholecystitis-in-a-young-male-without-predisposing-factors-a-case-report
#15
Ming-Yu Chen, Chen Lu, Yi-Fan Wang, Xiu-Jun Cai
This report describes the diagnosis and treatment for Emphysematous cholecystitis (EC) without predisposing factors, and reviews the current literature.A 49-year-old male without predisposition presented to emergency department with a two-day history of sudden onset abdominal pain, hypertension and received empirical antibiotics with Imipenem/Cilastatin 0.5 g via intravenous route every 8 hours. Computed tomography (CT)-scan revealed that air encircling gallbladder is the most important and accurate evidence for EC diagnosis...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27854165/antimicrobial-resistance-mechanisms-and-genetic-diversity-of-multidrug-resistant-acinetobacter-baumannii-isolated-from-a-teaching-hospital-in-malaysia
#16
Shirin Biglari, Alfizah Hanafiah, Shaliawani Mohd Puzi, Ramliza Ramli, Mostafizur Rahman, Bruno Silvester Lopes
Multidrug-resistant (MDR) Acinetobacter baumannii has increasingly emerged as an important nosocomial pathogen. The aim of this study was to determine the resistance profiles and genetic diversity in A. baumannii clinical isolates in a tertiary medical center in Malaysia. The minimum inhibitory concentrations of carbapenems (imipenem and meropenem), cephalosporins (ceftazidime and cefepime), and ciprofloxacin were determined by E-test. PCR and sequencing were carried out for the detection of antibiotic resistance genes and mutations...
November 17, 2016: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/27854148/first-detection-of-ges-5-carbapenemase-producing-acinetobacter-baumannii-isolate
#17
Mohamed H Al-Agamy, Katy Jeannot, Taghrid S El-Mahdy, Atef M Shibl, Wael Kattan, Patrick Plésiat, Patrice Courvalin
This study was conducted to investigate the molecular epidemiology of resistance in Acinetobacter baumannii isolates collected at a hospital in Riyadh, Saudi Arabia, from January through December 2010. Twenty-seven A. baumannii were highly resistant (MIC90 > 256 μg/ml) to ceftazidime, cefepime, and aztreonam. Imipenem resistance was seen in 24 isolates, of which 18 had an minimum inhibitory concentration (MIC) >32 μg/mL. Ciprofloxacin, gentamicin, and amikacin resistance was found in 93%, 52%, and 37% of all the isolates, respectively...
November 17, 2016: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/27843267/bacteriology-of-urine-specimens-obtained-from-men-with-symptomatic-benign-prostatic-hyperplasia
#18
Jude Orumuah Agbugui, E O Obarisiagbon, I I Osaigbovo
BACKGROUND: Bacteriuria and urinary tract infections are common sequelae of benign prostatic hyperplasia (BPH). Thus, the knowledge of urine bacteriology in men with symptomatic BPH in our environment may play a complementary role in management. OBJECTIVES: To determine the incidence of bacteriuria and the antibiotic sensitivity pattern of bacterial isolates in cultured urine samples of men with symptomatic BPH. PATIENTS AND METHODS: This was a 1 year prospective study...
July 2016: Nigerian Journal of Surgery: Official Publication of the Nigerian Surgical Research Society
https://www.readbyqxmd.com/read/27842872/first-detection-of-extended-spectrum-cephalosporin-and-fluoroquinolone-resistant-escherichia-coli-in-australian-food-producing-animals
#19
Sam Abraham, David Jordan, Hui S Wong, James R Johnson, Mark A Toleman, David L Wakeham, David M Gordon, John D Turnidge, Joanne L Mollinger, Justine S Gibson, Darren J Trott
This study aimed to define the frequency of resistance to critically important antimicrobials (CIAs) [i.e. extended-spectrum cephalosporins (ESCs), fluoroquinolones (FQs) and carbapenems] among Escherichia coli isolates causing clinical disease in Australian food-producing animals. Clinical E. coli isolates (n=324) from Australian food-producing animals [cattle (n=169), porcine (n=114), poultry (n=32) and sheep (n=9)] were compiled from all veterinary diagnostic laboratories across Australia over a 1-year period...
December 2015: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/27842758/characterisation-of-successive-acinetobacter-baumannii-isolates-from-a-deceased-haemophagocytic-lymphohistiocytosis-patient
#20
Hyeon Jin Choi, Min Cheol Kil, Ji-Young Choi, Sun Ju Kim, Ki-Sup Park, Yae-Jean Kim, Kwan Soo Ko
In this study, 38 Acinetobacter baumannii isolates successively isolated from blood, skin swabs and tracheal aspirates from a single patient who died from haemophagocytic lymphohistiocytosis were investigated. The isolates were collected between March 2012 and August 2012. A. baumannii genotypes were determined by multilocus sequence typing (MLST) and pulsed-field gel electrophoresis (PFGE). In vitro antimicrobial susceptibility testing was performed and colistin heteroresistance and persistence were evaluated...
November 8, 2016: International Journal of Antimicrobial Agents
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