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https://www.readbyqxmd.com/read/28435108/molecular-characterization-and-antimicrobial-susceptibility-of-the-ca-mrsa-isolated-from-healthcare-workers-tehran-iran
#1
Solmaz Ohadian Moghadam, Mohammad Modoodi Yaghooti, Nasrin Pourramezan, Mohammad Reza Pourmand
INTRODUCTION: Methicillin resistant Staphylococcus aureus (MRSA) has become as a nosocomial pathogen worldwide. Considering the importance of MRSA typing for understanding the evolution and dissemination of these strains, we studied the molecular characteristics of MRSA colonized healthcare workers (HCWs). METHODOLOGY: All MRSA isolated from HCWs, were genotyped using staphylococcal cassette chromosome mec (SCCmec) with multiplex PCR assay, multilocus sequence typing (MLST) and spa typing...
April 20, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28412568/first-report-on-mrsa-cc398-recovered-from-wild-boars-in-the-north-of-portugal-are-we-facing-a-problem
#2
Margarida Sousa, Nuno Silva, Vera Manageiro, Sónia Ramos, António Coelho, David Gonçalves, Manuela Caniça, Carmen Torres, Gilberto Igrejas, Patrícia Poeta
The aim of the present study was to evaluate the resistance of Staphylococcus aureus recovered from wild boars, to analyze their genetic lineages, and to investigate the susceptibility to oxacillin. Samples from mouth and nose of 45 wild boars (Sus scrofa) were collected during hunt activity from November 2012 to January 2013 in the North of Portugal. S. aureus isolates were recovered from 30 of these samples (33%); one isolate/sample was further studied. The susceptibility of the isolates was tested by disk-diffusion test against 14 antimicrobial agents and minimal inhibitory concentration was used to test oxacillin according to EUCAST guidelines...
April 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28379309/evidence-of-archaeal-methanogens-in-brain-abscess
#3
Michel Drancourt, Vanessa Demonfort Nkamga, Ndèye Aïssatou Lakhe, Jean-Marie Régis, Henry Dufour, Pierre-Edouard Fournier, Yassina Bechah, W Michael Scheld, Didier Raoult
Background.: Methanogens are antibiotic-resistant anaerobic archaea which escape routine detection in clinical microbiology. We hypothesized that methanogens may participate as part of the anaerobic community causing brain abscess. Methods.: Methanogens were investigated in one index sample by specific PCR-sequencing and culture. The pathogenesis of a methanogen isolate was assessed in a mouse model of brain abscess. Archaea-specific qPCR and metagenomics were used to detect specific archaeal sequences in brain abscess samples and controls...
April 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28370366/new-insights-on-the-antibacterial-efficacy-of-miconazole-in-vitro
#4
P Nenoff, D Koch, C Krüger, C Drechsel, P Mayser
Miconazole is a broad-spectrum antifungal used in topical preparations. In the present investigation the minimal inhibitory concentration (MIC) of miconazole for eighty wild type strains of gram-positive and gram-negative bacteria isolated from infected skin lesions was assessed using a modified agar dilution test (adapted to CLSI, Clinical Laboratory Standards Institute). 14 ATCC reference strains served as controls. Miconazole was found efficacious against gram-positive aerobic bacteria (n=62 species), the MICs against Staphylococcus (S...
March 30, 2017: Mycoses
https://www.readbyqxmd.com/read/28359962/quantitative-analysis-of-binary-polymorphs-mixtures-of-fusidic-acid-by-diffuse-reflectance-ftir-spectroscopy-diffuse-reflectance-ft-nir-spectroscopy-raman-spectroscopy-and-multivariate-calibration
#5
Canyong Guo, Xuefang Luo, Xiaohua Zhou, Beijia Shi, Juanjuan Wang, Jinqi Zhao, Xiaoxia Zhang
Vibrational spectroscopic techniques such as infrared, near-infrared and Raman spectroscopy have become popular in detecting and quantifying polymorphism of pharmaceutics since they are fast and non-destructive. This study assessed the ability of three vibrational spectroscopy combined with multivariate analysis to quantify a low-content undesired polymorph within a binary polymorphic mixture. Partial least squares (PLS) regression and support vector machine (SVM) regression were employed to build quantitative models...
June 5, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28289111/oral-and-topical-antibiotics-for-clinically-infected-eczema-in-children-a-pragmatic-randomized-controlled-trial-in-ambulatory-care
#6
Nick A Francis, Matthew J Ridd, Emma Thomas-Jones, Christopher C Butler, Kerenza Hood, Victoria Shepherd, Charis A Marwick, Chao Huang, Mirella Longo, Mandy Wootton, Frank Sullivan
PURPOSE: Eczema may flare because of bacterial infection, but evidence supporting antibiotic treatment is of low quality. We aimed to determine the effect of oral and topical antibiotics in addition to topical emollient and corticosteroids in children with clinically infected eczema. METHODS: We employed a 3-arm, blinded, randomized controlled trial in UK ambulatory care. Children with clinical, non-severely infected eczema were randomized to receive oral and topical placebos (control), oral antibiotic (flucloxacillin) and topical placebo, or topical antibiotic (fusidic acid) and oral placebo, for 1 week...
March 2017: Annals of Family Medicine
https://www.readbyqxmd.com/read/28257555/antibiotic-treatment-for-clostridium-difficile-associated-diarrhoea-in-adults
#7
REVIEW
Richard L Nelson, Katie J Suda, Charlesnika T Evans
BACKGROUND: Clostridium difficile (C. difficile) is recognized as a frequent cause of antibiotic-associated diarrhoea and colitis. This review is an update of a previously published Cochrane review. OBJECTIVES: The aim of this review is to investigate the efficacy and safety of antibiotic therapy for C. difficile-associated diarrhoea (CDAD), or C. difficile infection (CDI), being synonymous terms. SEARCH METHODS: We searched MEDLINE, EMBASE, CENTRAL and the Cochrane IBD Group Specialized Trials Register from inception to 26 January 2017...
March 3, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28225264/fatty-acid-comprising-lysine-conjugates-anti-mrsa-agents-that-display-in-vivo-efficacy-by-disrupting-biofilms-with-no-resistance-development
#8
Mohini M Konai, Jayanta Haldar
Methicillin-resistant Staphylococcus aureus (MRSA) has developed resistance to antibiotics of last resort such as vancomycin, linezolid, and daptomycin. Additionally, their biofilm forming capability has set an alarming situation in the treatment of bacterial infections. Herein we report the potency of fatty acid comprising lysine conjugates as novel anti-MRSA agents, which were not only capable of killing growing planktonic MRSA at low concentration (MIC = 3.1-6.3 μg/mL), but also displayed potent activity against nondividing stationary phase cells...
March 6, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28221837/environmental-occurrence-and-antibiotic-susceptibility-profile-of-listeria-monocytogenes-at-a-slaughterhouse-raw-processing-plant-in-romania
#9
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/28209829/draft-genome-sequence-of-staphylococcus-cohnii-subsp-urealyticus-isolated-from-a-healthy-dog
#10
David C Bean, Sarah M Wigmore, David W Wareham
Staphylococcus cohnii subsp. urealyticus strain SW120 was isolated from the ear swab of a healthy dog. The isolate is resistant to methicillin and fusidic acid. The SW120 draft genome is 2,805,064 bp and contains 2,667 coding sequences, including 58 tRNAs and nine complete rRNA coding regions.
February 16, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28073733/antibiotic-therapy-and-staphylococcal-skin-infections-in-a-tropical-malarial-zone-guyana-practices-in-conventional-and-exceptional-situations
#11
S-P Corcostegui, H Lefort, A Dia, V Pommier de Santi, C Carfantan, J Galant, E Lightburne, P Guénot, X Deparis, R Migliani, J-J Morand
A problem of community-acquired Staphylococcus aureus skin infections emerged in the French armed forces in 2004, in a malaria-endemic areas. The high incidence rate led us to evaluate military staff practices. This was a cross-sectional survey of doctors and nurses deployed as officers in French Guyana since 2006. The definition of skin and soft-tissue infection came from the criteria for epidemiological surveillance of the armed forces. We studied the management of antibiotic therapy and its related difficulties...
November 1, 2016: Médecine et Santé Tropicales
https://www.readbyqxmd.com/read/28062288/designation-of-pathogenic-resistant-bacteria-in-the-sparusaurata-sea-collected-in-tunisia-coastlines-correlation-with-high-performance-liquid-chromatography-tandem-mass-spectrometry-analysis-of-antibiotics
#12
Amina Zouiten, Ines Mehri, Asma Beltifa, Asma Ghorbel, Olivier Sire, Joris Van Loco, Hassen Abdenaceur, Tim Reyns, Hedi Ben Mansour
Vibrio is characterized by a large number of species and some of them are human pathogens causing gastro intestinal and wound infections through the ingestion or manipulation of contaminated fishes including Vibrio parahaemolyticus and Vibrio alginolyticus. In this study, we reported the phenotypic and molecular characterization of Vibrio parahaemolyticus and Vibrio alginolyticus strains isolated from wild and farm sea bream (Sparus aurata L.) along the Tunisian coast from December 2015 to April 2016. Therefore, the antibiograms indicate a difference between farmed and wild fish...
January 3, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28060920/the-tir-homologue-lies-near-resistance-genes-in-staphylococcus-aureus-coupling-modulation-of-virulence-and-antimicrobial-susceptibility
#13
Sabine Patot, Paul Imbert, Jessica Baude, Patricia Martins Simões, Jean-Baptiste Campergue, Arthur Louche, Reindert Nijland, Michèle Bès, Anne Tristan, Frédéric Laurent, Adrien Fischer, Jacques Schrenzel, François Vandenesch, Suzana Salcedo, Patrice François, Gérard Lina
Toll/interleukin-1 receptor (TIR) domains in Toll-like receptors are essential for initiating and propagating the eukaryotic innate immune signaling cascade. Here, we investigate TirS, a Staphylococcus aureus TIR mimic that is part of a novel bacterial invasion mechanism. Its ectopic expression in eukaryotic cells inhibited TLR signaling, downregulating the NF-kB pathway through inhibition of TLR2, TLR4, TLR5, and TLR9. Skin lesions induced by the S. aureus knockout tirS mutant increased in a mouse model compared with wild-type and restored strains even though the tirS-mutant and wild-type strains did not differ in bacterial load...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28012840/synthesis-and-biological-characterisation-of-ester-and-amide-derivatives-of-fusidic-acid-as-antiplasmodial-agents
#14
Marlene Espinoza-Moraga, Kawaljit Singh, Mathew Njoroge, Gurminder Kaur, John Okombo, Carmen De Kock, Peter J Smith, Sergio Wittlin, Kelly Chibale
A series of novel fusidic acid (FA) derivatives was synthesized by replacing the carboxylic acid group with various ester and amide groups and evaluated in vitro for their antiplasmodial activity against the chloroquine-sensitive NF54 and multidrug-resistant K1 strains of the malarial parasite Plasmodium falciparum. Most of these derivatives showed a 4-49 and 5-17-fold increase in activity against NF54 and KI strains, respectively, as compared to FA and had a good selectivity index. These derivatives are stable over the incubation period and do not appear to be prodrugs of fusidic acid...
November 25, 2016: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/27999423/characterization-of-community-associated-staphylococcus-aureus-from-skin-and-soft-tissue-infections-a-multicenter-study-in-china
#15
MULTICENTER STUDY
Ying Liu, Zhe Xu, Zhou Yang, Juan Sun, Lin Ma
We evaluated the epidemiological and molecular features of community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) and methicillin-sensitive S. aureus (MSSA) from children and adult patients with skin and soft-tissue infections (SSTIs) in China. Prospective community-acquired S. aureus SSTI surveillance was conducted in 23 hospitals over a 24-month period. Susceptibility to 16 antimicrobials was evaluated using the agar dilution method. StatApriori was used to determine statistically significant association trends...
December 21, 2016: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/27982032/transport-of-lipophilic-carboxylates-is-mediated-by-transmembrane-helix-2-in-multidrug-transporter-acrb
#16
Christine Oswald, Heng-Keat Tam, Klaas M Pos
The deployment of multidrug efflux pumps is a powerful defence mechanism for Gram-negative bacterial cells when exposed to antimicrobial agents. The major multidrug efflux transport system in Escherichia coli, AcrAB-TolC, is a tripartite system using the proton-motive force as an energy source. The polyspecific substrate-binding module AcrB uses various pathways to sequester drugs from the periplasm and outer leaflet of the inner membrane. Here we report the asymmetric AcrB structure in complex with fusidic acid at a resolution of 2...
December 16, 2016: Nature Communications
https://www.readbyqxmd.com/read/27981857/effective-modified-conservative-tissue-preserving-protocol-to-treat-stage-i-axillary-hidradenitis-suppurativa-a-prospective-cohort-study-of-627-patients-with-five-years-follow-up
#17
Bader Hamza Shirah, Hamza Asaad Shirah
BACKGROUND: Hidradenitis suppurativa is a chronic inflammatory cutaneous disorder that involves the infundibular terminal follicles in areas rich in apocrine glands and associated with the formation of abscesses and fistulating sinus. The clinical course is variable, and definitive evidence-based guidelines for the management are not well-established. Conservative treatment is controversial, and surgical excision is the recommended method. Herein, we aim to analyze the results of a modified conservative tissue preserving management protocol for stage I axillary hidradenitis suppurativa...
December 16, 2016: Journal of Dermatological Treatment
https://www.readbyqxmd.com/read/27908697/clostridium-difficile-carriage-in-adult-cystic-fibrosis-cf-implications-for-patients-with-cf-and-the-potential-for-transmission-of-nosocomial-infection
#18
D G Burke, M J Harrison, C Fleming, M McCarthy, C Shortt, I Sulaiman, D M Murphy, J A Eustace, F Shanahan, C Hill, C Stanton, M C Rea, R P Ross, B J Plant
Clostridium difficile is an anaerobic Gram-positive, spore-forming, toxin-producing bacillus transmitted among humans through the faecal-oral route. Despite increasing carriage rates and the presence of C. difficile toxin in stool, patients with CF rarely appear to develop typical manifestations of C. difficile infection (CDI). In this study, we examined the carriage, toxin production, ribotype distribution and antibiotic susceptibility of C. difficile in a cohort of 60 adult patients with CF who were pre-lung transplant...
March 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/27903884/real-time-determination-of-bacterial-in-vivo-ribosome-translation-elongation-speed-based-on-lacz%C3%AE-complementation-system
#19
Manlu Zhu, Xiongfeng Dai, Yi-Ping Wang
Bacterial growth significantly depends on protein synthesis catalyzed by ribosome. Ribosome translation elongation speed is a key factor determining the bacterial protein synthesis rate. However, existing methods for determining translation elongation speed have limited applications. Here we developed a simple and convenient method for measuring bacterial translation elongation speed based on LacZα complementation system. It enables the measurement of in vivo translation elongation speed of different individual genes...
November 16, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27902273/racemicystis-persica-sp-nov-a-novel-myxobacterium-from-iranian-soil
#20
Joachim Wink, Azam Moradi, Gholam Hosein Ebrahimipour, Kathrin Mohr, Peter Kämpfer, Stefanie Glaeser, Fabienne Hennessen, Katja Gemperlein, Awal Prasad Ram, Corinna Wolf, Rolf Müller
A novel myxobacterium, strain MSr11462T, was isolated in 2015 from a soil sample collected from Kish Island beach, Persian Gulf, Iran. It displayed general myxobacterial features like Gram negative staining, rod shaped vegetative cells, gliding on solid surfaces, microbial lytic activity, fruiting body like aggregates and myxospore like structures. The strain was mesophilic, aerobic and showed chemoheterotrophic mode of nutrition. It was resistant to many antibiotics like gentamycin, polymyxin, Fusidic acid and trimethopril and the key fatty acids of whole cell hydrolysates were iso-C15:0, C16:0, iso-C17:0, C18:1 , iso-C17:1 2-OH, C18:1 2-OH, iso-C15:0 OAG (O-alkylglycerol), and C16:1 OAG...
November 11, 2016: International Journal of Systematic and Evolutionary Microbiology
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