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https://www.readbyqxmd.com/read/28637330/occurrence-of-aminoglycoside-modifying-enzymes-ames-among-isolates-of-escherichia-coli-exhibiting-high-levels-of-aminoglycoside-resistance-isolated-from-korean-cattle-farms
#1
Kuastros Mekonnen Belaynehe, Seung Won Shin, Park Hong-Tae, Han Sang Yoo
This study investigated 247 Escherichia coli isolates collected from four cattle farms to characterize aminoglycoside-modifying enzyme (AME) genes, their plasmid replicons and transferability. Out of 247 isolates a high number of isolates (total 202; 81.78%) were found resistant to various antibiotics by disc-diffusion. Of the 247 strains 139 (56.3%) were resistant to streptomycin and other antibiotics resistance followed as tetracycline (12.15%), ampicillin (7%), chloramphenicol (5.7%) and trimethoprim-sulfamethoxazole (0...
June 15, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28637225/characteristics-of-escherichia-coli-isolated-from-broiler-chickens-with-colibacillosis-in-commercial-farms-from-a-common-hatchery
#2
H Ozaki, Y Matsuoka, E Nakagawa, T Murase
To investigate the epidemiologic aspects of colibacillosis in broiler chickens, 83 Escherichia coli isolates obtained from the pericarditis and perihepatitis lesions in broiler chickens from 4 commercial farms, 5 isolates recovered from 5 samples of yolk sac contents that were pooled from 25 emaciated chicks, and 4 fecal isolates obtained from a hatchery that supplied chicks to the 4 commercial farms mentioned above were genetically and bacteriologically characterized. Using pulsed-field gel electrophoresis (PFGE), a total of 92 isolates were classified into 33 pulsotypes...
June 20, 2017: Poultry Science
https://www.readbyqxmd.com/read/28636666/molecular-and-microbiological-report-of-a-hospital-outbreak-of-ndm-1-carrying-enterobacteriaceae-in-mexico
#3
Paola Bocanegra-Ibarias, Elvira Garza-González, Rayo Morfín-Otero, Humberto Barrios, Licet Villarreal-Treviño, Eduardo Rodríguez-Noriega, Ulises Garza-Ramos, Santiago Petersen-Morfin, Jesus Silva-Sanchez
OBJECTIVES: To characterize the microbiological, molecular and epidemiological data of an outbreak of carbapenem-resistant Enterobacteriaceae (CRE) in a tertiary-care hospital in Mexico. METHODS: From September 2014 to July 2015, all CRE clinical isolates recovered during an outbreak in the Hospital Civil "Fray Antonio Alcalde" in Jalisco, Mexico were screened for antimicrobial susceptibility, carbapenemase production, carbapenemase-encoding genes, and plasmid profiles...
2017: PloS One
https://www.readbyqxmd.com/read/28630628/staphylococcus-saprophyticus-recovered-from-humans-food-and-recreational-waters-in-rio-de-janeiro-brazil
#4
Viviane Santos de Sousa, Ana Paula de Souza da-Silva, Leif Sorenson, Raphael Paiva Paschoal, Renata Fernandes Rabello, Eloiza Helena Campana, Márcia Soares Pinheiro, Lyssa Oliveira Ferreira Dos Santos, Natacha Martins, Ana Carolina Nunes Botelho, Renata Cristina Picão, Sérgio Eduardo Longo Fracalanzza, Lee Woodland Riley, George Sensabaugh, Beatriz Meurer Moreira
Staphylococcus saprophyticus is an important agent of urinary tract infection (UTI) in young women, but information about this pathogen in human microbiota and in common environment is lacking. The aim of this study was to characterize S. saprophyticus isolates from genitoanal microbiota of 621 pregnant women, 10 minas cheese packs, and five beaches in Rio de Janeiro city and compare PFGE profiles of these isolates with five UTI PFGE clusters described in this city. We investigated 65 S. saprophyticus isolates from microbiota, 13 from minas cheese, and 30 from beaches and 32 UTI isolates...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28629366/molecular-characterization-of-clinical-imp-producing-klebsiella-pneumoniae-isolates-from-a-chinese-tertiary-hospital
#5
Kaisheng Lai, Yanning Ma, Ling Guo, Jingna An, Liyan Ye, Jiyong Yang
BACKGROUND: IMP-producing Klebsiella pneumoniae (IMPKpn) exhibits sporadic prevalence in China. The mechanisms related to the spread of IMPKpn remain unclear. METHODS: Carbapenem non-susceptible K. pneumoniae isolates were collected from our hospital. The genetic relatedness, antimicrobial susceptibility, as well as sequence types (ST) were analyzed by pulsed-field gel electrophoresis (PFGE), VITEK 2 AST test Kit, and multilocus sequence typing (MLST), respectively...
June 19, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28627467/time-to-review-the-gold-standard-for-genotyping-vancomycin-resistant-enterococci-in-epidemiology-comparing-whole-genome-sequencing-with-pfge-and-mlst-in-three-suspected-outbreaks-in-sweden-during-2013-2015
#6
Birgitta Lytsy, Lars Engstrand, Åke Gustafsson, Rene Kaden
Vancomycin-resistant enterococci (VRE) are a challenge to the health-care system regarding transmission rate and treatment of infections. VRE outbreaks have to be controlled from the first cases which means that appropriate and sensitive genotyping methods are needed. The aim of this study was to investigate the applicability of whole genome sequencing based analysis compared to Pulsed-Field Gel Electrophoresis (PFGE) and Multi-Locus Sequence Typing (MLST) in epidemiological investigations as well as the development of a user friendly method for daily laboratory use...
June 13, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28621044/haemophilus-influenzae-vulvovaginitis-associated-with-rhinitis-caused-by-the-same-clone-in-a-prepubertal-girl
#7
Xiao Chen, Lifeng Chen, Wenjie Zeng, Xiaofeng Zhao
Vulvovaginitis caused by upper respiratory flora is generally considered to be the most common gynecological problem in prepubertal girls. To date, however, no direct evidence has been obtained for the underlying mechanism of transmission. This report describes a case of non-capsulate Haemophilus influenzae vulvovaginitis in a 6-year-old girl with a history of foreign bodies (cotton wool) in her vagina. Moreover, this girl had recurrent rhinitis for approximately 3 years. On Pulsed Field Gel Electrophoresis (PFGE) analysis the H...
June 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28619007/whole-genome-sequencing-analyses-of-listeria-monocytogenes-that-persisted-in-a-milkshake-machine-for-a-year-and-caused-illnesses-in-washington-state
#8
Zhen Li, Ailyn Pérez-Osorio, Yu Wang, Kaye Eckmann, William A Glover, Marc W Allard, Eric W Brown, Yi Chen
BACKGROUND: In 2015, in addition to a United States multistate outbreak linked to contaminated ice cream, another outbreak linked to ice cream was reported in the Pacific Northwest of the United States. It was a hospital-acquired outbreak linked to milkshakes, made from contaminated ice cream mixes and milkshake maker, served to patients. Here we performed multiple analyses on isolates associated with this outbreak: pulsed-field gel electrophoresis (PFGE), whole genome single nucleotide polymorphism (SNP) analysis, species-specific core genome multilocus sequence typing (cgMLST), lineage-specific cgMLST and whole genome-specific MLST (wgsMLST)/outbreak-specific cgMLST...
June 15, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28610560/prevalence-and-molecular-characteristics-of-staphylococcus-aureus-including-methicillin-resistant-strains-isolated-from-bulk-can-milk-and-raw-milk-products-in-pastoral-communities-of-south-west-uganda
#9
Benon B Asiimwe, Rossella Baldan, Alberto Trovato, Daniela M Cirillo
BACKGROUND: Staphylococcus aureus strains are now regarded as zoonotic agents. In pastoral settings where human-animal interaction is intimate, multi-drug resistant microorganisms have become an emerging zoonotic issue of public health concern. The study of S. aureus prevalence, antimicrobial resistance and clonal lineages in humans, animals and food in African settings has great relevance, taking into consideration the high diversity of ethnicities, cultures and food habits that determine the lifestyle of the people...
June 13, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28606485/a-10-year-surveillance-of-antimicrobial-susceptibility-patterns-in-shigella-sonnei-isolates-circulating-in-jiangsu-province-china
#10
Bing Gu, Ting Xu, Haiquan Kang, Yanling Xu, Genyan Liu, Shiyang Pan, Huimin Qian, Ping Ma
OBJECTIVES: The rapid emergence of drug-resistant Shigella sonnei is a serious public health problem. This study aimed to characterise the antimicrobial resistance patterns, molecular subtypes, and integron types and resistance gene cassettes in S. sonnei from Jiangsu Province, China. METHODS: In total, 340 S. sonnei were collected in 2002-2011 throughout Jiangsu Province. Antimicrobial susceptibility testing, pulsed-field gel electrophoresis (PFGE), PCR amplification of integrons, restriction fragment length polymorphism (RFLP) and DNA sequencing of cassette regions were performed...
June 9, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28606287/-homology-of-legionella-strains-isolated-from-clinical-cases-and-environmental-water-in-shenyang
#11
S H Zhao, Y Chen, P Zhang, B Y Hou, L Zhao
Objective: To study the homology of Legionella pneumophila (LP) strains which were isolated from clinical specimens and environmental water. Methods: Twenty-two Legionella strains were collected in which 2 strains were isolated from 2 cases of LP infection patients, and others were isolated from domestic water or air conditioning cooling tower water of 2 hospitals and 13 companies from July 2012 to September 2014 in Shenyang. They were recovered and analyzed by the pulse field gel electrophoresis (PFGE) with AscⅠ restriction enzymes...
June 13, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28605961/species-distribution-antibiotic-resistance-and-virulence-traits-in-canine-and-feline-enterococci-in-tunisia
#12
Leila Ben Said, Raoudha Dziri, Nadia Sassi, Carmen Lozano, Karim Ben Slama, Imen Ouzari, Carmen Torres, Naouel Klibi
In order to investigate the possible role of dogs and cats in the carriage and potential dissemination of resistant enterococci, seventy faecal samples from dogs and cats were tested for enterococci. Fifty-eight enterococci were recovered. Isolates were identified as Enterococcus faecium (n = 31) and E. faecalis (n = 14) E. durans (n = 6), E. casseliflavus (n = 2), E. hirae and E. gallinarum (2 isolates each). Enterococcal isolates showed resistance to ciprofloxacin (n = 35), erythromycin (n = 31), tetracycline (n = 25), kanamycin (n = 15), streptomycin (n = 13), pristinamycin (n = 11), gentamicin (n = 10), chloramphenicol (n = 8), and linezolid (n = 6)...
June 2017: Acta Veterinaria Hungarica
https://www.readbyqxmd.com/read/28605515/fri-2-carbapenemase-producing-enterobacter-cloacae-complex-in-the-uk
#13
Danièle Meunier, Jacqueline Findlay, Michel Doumith, Daniel Godoy, Claire Perry, Rachel Pike, Firza Gronthoud, Theresa Shryane, Laurent Poirel, William Welfare, Neil Woodford, Katie L Hopkins
Objectives: Detection of rarer carbapenemases is challenging, as it requires molecular assays with comprehensive coverage or the use of phenotypic methods for the detection of carbapenemase activity. We describe a new class A carbapenemase, FRI-2, in an Enterobacter cloacae complex isolate following implementation of an in-house multiplex PCR for the detection of 'rare' class A carbapenemases. Methods: MICs were determined by agar dilution. A carbapenem-resistant E...
June 10, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28604331/evidence-of-persistence-of-prevotella-spp-in-the-cystic-fibrosis-lung
#14
D F Gilpin, K A Nixon, M Bull, S J McGrath, L Sherrard, J M Rolain, E Mahenthiralingam, J S Elborn, M M Tunney
PURPOSE: Prevotella spp. represent a diverse genus of bacteria, frequently identified by both culture and molecular methods in the lungs of patients with chronic respiratory infection. However, their role in the pathogenesis of chronic lung infection is unclear; therefore, a more complete understanding of their molecular epidemiology is required. METHODOLOGY: Pulsed Field Gel Electrophoresis (PFGE) and Random Amplified Polymorphic DNA (RAPD) assays were developed and used to determine the degree of similarity between sequential isolates (n=42) from cystic fibrosis (CF) patients during periods of clinical stability and exacerbation...
June 13, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28602519/diversity-of-plasmids-harboring-blacmy-2-in-multidrug-resistant-escherichia-coli-isolated-from-poultry-in-brazil
#15
Joseane Cristina Ferreira, Rafael Antonio Casarin Penha Filho, Leonardo Neves Andrade, Angelo Berchieri Junior, Ana Lúcia Costa Darini
Multidrug-resistance (MDR) has been increasingly reported in Gram-negative bacteria from the intestinal microbiota, environment and food-producing animals. Resistance plasmids able to harbor different transposable elements are capable to mobilize antimicrobial resistance genes and transfer to other bacterial hosts. Plasmids carrying blaCMY are frequently associated with MDR. The present study assessed the presence of plasmid-encoded ampC genes (blacmy, blamox, blafox, blalat, blaact, blamir, bladha, blamor) in commensal E...
May 3, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28598302/multi-locus-variable-number-tandem-repeat-analysis-of-bordetella-pertussis-isolates-circulating-in-poland-in-the-period-1959-2013
#16
Ewa Mosiej, Katarzyna Krysztopa-Grzybowska, Maciej Polak, Marta Prygiel, Anna Lutyńska
PURPOSE: Despite the long history of pertussis vaccination and high vaccination coverage in Poland and many other developed countries, pertussis incidence rates have increased substantially, making whooping cough one of the most prevalent vaccine-preventable diseases. Among the factors potentially involved in pertussis resurgence, the adaptation of the Bordetella pertussis population to country-specific vaccine-induced immunity through selection of non-vaccine-type strains still needs detailed studies...
June 9, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28596755/genetic-diversity-and-virulence-determinants-of-escherichia-coli-strains-isolated-from-patients-with-crohn-s-disease-in-spain-and-chile
#17
Sandra Céspedes, Waleska Saitz, Felipe Del Canto, Marjorie De la Fuente, Rodrigo Quera, Marcela Hermoso, Rául Muñoz, Daniel Ginard, Sam Khorrami, Jorge Girón, Rodrigo Assar, Ramón Rosselló-Mora, Roberto M Vidal
Adherent-invasive Escherichia coli (AIEC) strains are genetically variable and virulence factors for AIEC are non-specific. FimH is the most studied pathogenicity-related protein, and there have been few studies on other proteins, such as Serine Protease Autotransporters of Enterobacteriacea (SPATEs). The goal of this study is to characterize E. coli strains isolated from patients with Crohn's disease (CD) in Chile and Spain, and identify genetic differences between strains associated with virulence markers and clonality...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28594944/development-and-evaluation-of-a-core-genome-multilocus-typing-scheme-for-whole-genome-sequence-based-typing-of-acinetobacter-baumannii
#18
Paul G Higgins, Karola Prior, Dag Harmsen, Harald Seifert
We have employed whole genome sequencing to define and evaluate a core genome multilocus sequence typing (cgMLST) scheme for Acinetobacter baumannii. To define a core genome we downloaded a total of 1,573 putative A. baumannii genomes from NCBI as well as representative isolates belonging to the eight previously described international A. baumannii clonal lineages. The core genome was then employed against a total of fifty-three carbapenem-resistant A. baumannii isolates that were previously typed by PFGE and linked to hospital outbreaks in eight German cities...
2017: PloS One
https://www.readbyqxmd.com/read/28594893/pandemic-extra-intestinal-pathogenic-escherichia-coli-expec-clonal-group-o6-b2-st73-as-a-cause-of-avian-colibacillosis-in-brazil
#19
Marcos Paulo Vieira Cunha, Andre Becker Saidenberg, Andrea Micke Moreno, Antonio José Piantino Ferreira, Mônica Aparecida Midolli Vieira, Tânia Aparecida Tardelli Gomes, Terezinha Knöbl
Extra-intestinal pathogenic Escherichia coli (ExPEC) represent an emerging pathogen, with pandemic strains increasingly involved in cases of urinary tract infections (UTIs), bacteremia, and meningitis. In addition to affecting humans, the avian pathotype of ExPEC, avian pathogenic E. coli (APEC), causes severe economic losses to the poultry industry. Several studies have revealed overlapping characteristics between APEC and human ExPEC, leading to the hypothesis of a zoonotic potential of poultry strains. However, the description of certain important pandemic clones, such as Sequence Type 73 (ST73), has not been reported in food sources...
2017: PloS One
https://www.readbyqxmd.com/read/28592549/emergence-of-a-staphylococcus-aureus-clone-resistant-to-mupirocin-and-fusidic-acid-carrying-exotoxin-genes-and-causing-mainly-skin-infections
#20
Anastassios Doudoulakakis, Iris Spiliopoulou, Nikolaos Spyridis, Nikolaos Giormezis, John Kopsidas, Maria Militsopoulou, Evangelia Lebessi, Maria Tsolia
Objectives: Skin and soft tissue infections (SSTIs) caused by mupirocin-resistant Staphylococcus aureus strains have recently increased in our settings. We sought to evaluate the characteristics of these cases over a 43-month period.Methods: All community-acquired staphylococcal infections caused by mupirocin-resistant strains were retrospectively reviewed. Genes encoding high level (HLR) mupirocin resistance (mupA), fusidic acid resistance (fusB), ermA, ermC, PVL (lukS/lukF-PV), exfoliative toxins (eta, etb), fibronectin binding protein A (fnbA) were investigated in 102 preserved selected strains by PCRs...
June 7, 2017: Journal of Clinical Microbiology
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