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https://www.readbyqxmd.com/read/29330015/mother-to-child-transmission-of-extended-spectrum-beta-lactamase-producing-enterobacteriaceae
#1
Dana Danino, Rimma Melamed, Batya Sterer, Nurith Porat, Guy Hazan, Alex Gushanski, Eilon Shany, David Greenberg, Avraham Borer
BACKGROUND: Preterm infants are at high risk for extended spectrum beta-lactamase producing Enterobacteriaceae (ESBL-E) sepsis and neonatal intensive care unit (NICU) outbreaks. Maternal colonization with ESBL-E may be precursory to maternal-neonatal transmission. However, there is no consensus regarding surveillance of pregnant women for ESBL-E colonization. AIM: To identify pairs of mothers and offspring harbouring same-strain ESBL-E colonization and to determine whether maternal transmission may play a role in increasing ESBL-E carriage in preterm infants...
January 9, 2018: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29326011/neonatal-intestinal-colonization-with-extended-spectrum-%C3%AE-lactamase-producing-enterobacteriaceae-a-five-year-follow-up-study
#2
V Nordberg, K Jonsson, C G Giske, A Iversen, O Aspevall, B Jonsson, A Camporeale, M Norman, L Navér
OBJECTIVE: To analyse Klebsiella pneumoniae (KP) isolates from an outbreak of Extended-Spectrum β-Lactamase (ESBL)-producing KP and Escherichia coli (ESBL-EC) among infants admitted to neonatal intensive care units (NICUs) and to determine the duration of the intestinal colonization. METHODS: A prospective cohort study of intestinal ESBL-KP/ ESBL-EC colonized neonates after a five-month outbreak in two NICUs. Whole genome sequencing (WGS), multilocus sequence typing (MLST), core genome MLST, pulsed-field electrophoresis (PFGE) and PCR for blaCTX-M were performed on the first isolates...
January 8, 2018: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29322645/faecal-escherichia-coli-as-biological-indicator-of-spatial-interaction-between-domestic-pigs-and-wild-boar-sus-scrofa-in-corsica
#3
S A Barth, S Blome, D Cornelis, J Pietschmann, M Laval, O Maestrini, L Geue, F Charrier, E Etter, C Menge, M Beer, F Jori
On the Mediterranean island of Corsica, cohabitation between sympatric domestic pigs and Eurasian wild boar (Sus scrofa) is common and widespread and can facilitate the maintenance and dissemination of several pathogens detrimental for the pig industry or human health. In this study, we monitored a population of free-ranging domestic pigs reared in extensive conditions within a 800-ha property located in Central Corsica which was frequently visited by a sympatric population of wild boar between 2013 and 2015...
January 10, 2018: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/29322465/direct-in-gel-genomic-detection-of-antibiotic-resistance-genes-in-s1-pulsed-field-electrophoresis-gels
#4
Mark A Toleman
S1 pulsed field gel electrophoresis (PFGE) is a method to separate the bacterial chromosome(s) from plasmid nucleic acids. When combined with ethidium bromide staining and UV visualization this method is excellent at assessing the number of plasmids in individual bacterial strains. It is also good at approximating the true size of each individual plasmid when run against a DNA molecular marker. However, downstream applications such as: the location of individual resistance genes on individual plasmids or the chromosome are hampered by very poor transfer of large DNA molecules from agarose gels to adsorbent nylon or nitrocellulose membranes...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29319497/comparison-of-the-treatment-efficacy-between-tigecycline-plus-high-dose-cefoperazone-sulbactam-and-tigecycline-monotherapy-against-ventilator-associated-pneumonia-caused-by-extensively-drug-resistant-acinetobacter-baumannii
#5
Youfa Qin, Jie Zhang, Lei Wu, Dailong Zhang, Lunjiao Fu, Xiaoyan Xue
OBJECTIVE: The present study examined the effect of high-dose cefoperazone-sulbactam combined with tigecycline against ventilator-associated pneumonia (VAP) caused by extensively drug-resistant Acinetobacter baumannii (XDR-AB). MATERIALS AND METHODS: 42 patients with VAP due to XDR-AB infection were randomized into two groups: the TIG group (received tigecycline injection) and the TIG+CFS group (received tigecycline and cefoperazone-sulbactam (1 : 1) injection)...
January 10, 2018: International Journal of Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/29317899/outbreak-of-clonal-complex-22-panton-valentine-leucocidin-positive-methicillin-resistant-staphylococcus-aureus
#6
Mark I Garvey, Craig W Bradley, Kerry L Holden, Beryl Oppenheim
Aims: We describe the investigation and control of a nosocomial outbreak of Sequence Type (ST) 22 MRSA containing the Panton-Valentine leucocidin (PVL) toxin in an acute multispecialty surgical ward at University Hospital Birmingham NHS Foundation Trust. Methods: A patient was classed as acquiring methicillin-resistant Staphylococcus aureus (MRSA) if they had a negative admission screen and then had MRSA isolated from a subsequent screen or clinical specimen. Spa typing and pulsed field gel electrophoresis (PFGE) was undertaken to confirm MRSA acquisitions...
September 2017: Journal of Infection Prevention
https://www.readbyqxmd.com/read/29311067/molecular-epidemiology-of-emerging-blaoxa-23-like-and-blaoxa-24-like-carrying-acinetobacter-baumannii-in-taiwan
#7
Shu-Chen Kuo, Wei-Cheng Huang, Tzu-Wen Huang, Hui-Ying Wang, Jui-Fen Lai, Te-Li Chen, Tsai-Ling Lauderdale
Carbapenem-resistant Acinetobacter baumannii (CRAB) has increased significantly in recent decade in Taiwan. This study investigated the molecular epidemiology of CRAB with focus on the mechanisms of resistance and spread in isolates with blaOXA-23-like or blaOXA-24-like All 555 CRAB isolates in our 2002-2010 multi-centered collection were tested for the presence of class A, B and D carbapenemase genes. All isolates with blaOXA-23-like or blaOXA-24-like were subjected to PFGE and 82 isolates (60 blaOXA-23-like and 22 blaOXA-24-like) were selected for MLST to determine sequence type (ST) and clonal group (CG), and detection of additional β-lactamase and aminoglycoside genes...
January 8, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29297159/in-vitro-characterization-of-lactic-acid-bacteria-isolated-from-bovine-milk-as-potential-probiotic-strains-to-prevent-bovine-mastitis
#8
Matías S Pellegrino, Ignacio D Frola, Berardo Natanael, Dino Gobelli, María E F Nader-Macias, Cristina I Bogni
Bovine mastitis causes economic losses on dairy farms worldwide. Lactic acid bacteria (LAB) in animal health are an alternative tool to avoid antibiotic therapy on the prevention of bovine mastitis. In previous studies, 12 LAB isolated from bovine milk were selected taking into account some of the following characteristics: hydrophobicity, auto aggregative capability, inhibition of indicator pathogens, hydrogen peroxide, and capsular polysaccharide production. These LAB were considered because of their beneficial properties...
January 2, 2018: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/29282569/emergence-and-establishment-of-kpc-2-producing-st11-klebsiella-pneumoniae-in-a-general-hospital-in-shanghai-china
#9
Jingxian Liu, Jing Yu, Feng Chen, Jiajia Yu, Patricia Simner, Pranita Tamma, Ying Liu, Lisong Shen
The aim of this study was to investigate the characteristics of carbapenem-resistant Klebsiella pneumoniae (CRKP) collected during an outbreak in a Chinese teaching hospital and to provide insights into the prevention and control of nosocomial infection. We collected unique CRKP clinical isolates from 2009 to 2013. Antibiotic-resistant genes were identified by polymerase chain reaction (PCR) and sequencing. The isolates were typed using pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST)...
December 27, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/29279448/comparison-of-three-molecular-subtyping-methods-among-o157-and-non-o157-shiga-toxin-producing-escherichia-coli-isolates-from-japanese-cattle
#10
Hiromi Nakamura, Atsushi Iguchi, Tomofumi Maehara, Kyohei Fujiwara, Atsushi Fujiwara, Jun Ogasawara
To determine the infection source, route, and extent of outbreak, it is important to subtype Shiga toxin-producing Escherichia coli (STEC) isolates belonging to the same serotype for clustering into clonally related groups. In this study, we compared three molecular subtyping methods, multi-locus sequence typing (MLST), pulsed-field gel electrophoresis (PFGE), and multiple-locus variable number of tandem repeat analysis (MLVA), using O157 and non-O157 STEC isolated from Japanese beef cattle. A total of 73 STEC isolates belonging to 9 O-serogroups were used...
December 26, 2017: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29276044/intraclonal-variations-of-resistance-and-phenotype-in-pseudomonas-aeruginosa-epidemic-high-risk-clone-st308-a-key-to-success-within-a-hospital
#11
F Abdouchakour, F Aujoulat, P Licznar-Fajardo, H Marchandin, M Toubiana, S Parer, A Lotthé, E Jumas-Bilak
Most multidrug-resistant (MDR) and extensively drug-resistant (XDR) P. aeruginosa strains belonged to epidemic high-risk (EHR) clones that succeeded worldwide in the context of hospital outbreaks. In order to study the intraclonal diversity in EHR P. aeruginosa, we selected clinical and environmental strains of the EHR clone ST308 that caused outbreak clusters over five years in a hospital and then persisted in the hospital environment during four additional years, causing sporadic infections. Unexpectedly, resistance phenotype was very diverse within the population, independently of the origin (environmental or human) and the period of isolation (during or after outbreaks)...
November 21, 2017: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/29261162/food-borne-outbreak-investigation-and-molecular-typing-high-diversity-of-staphylococcus-aureus-strains-and-importance-of-toxin-detection
#12
Sarah Denayer, Laurence Delbrassinne, Yacine Nia, Nadine Botteldoorn
Staphylococcus aureus is an important aetiological agent of food intoxications in the European Union as it can cause gastro-enteritis through the production of various staphylococcal enterotoxins (SEs) in foods. Reported enterotoxin dose levels causing food-borne illness are scarce and varying. Three food poisoning outbreaks due to enterotoxin-producing S. aureus strains which occurred in 2013 in Belgium are described. The outbreaks occurred in an elderly home, at a barbecue event and in a kindergarten and involved 28, 18, and six cases, respectively...
December 20, 2017: Toxins
https://www.readbyqxmd.com/read/29260903/antibiotic-resistance-profiling-analysis-of-virulence-aspects-and-molecular-genotyping-of-staphylococcus-aureus-isolated-in-sicily-italy
#13
Maria Vitale, Salvatore Gaglio, Paola Galluzzo, Giuseppe Cascone, Chiara Piraino, Vincenzo Di Marco Lo Presti, Rosa Alduina
Staphylococcus aureus is the major cause of foodborne diseases worldwide. In this retrospective study, 84 S. aureus strains were characterized. The collection comprises 78 strains isolated during 1998 and 2014 from dairy products and tissue samples from livestock bred for dairy production in Sicily. One isolate was obtained from a pet (dog), one from an exotic animal (a circus elephant), and four human isolates were obtained during a severe food poisoning outbreak that occurred in Sicily in 2015. All the strains were characterized by pulsed-field gel electrophoresis (PFGE), for antibiotic resistance and presence of toxin genes...
December 20, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29248701/the-association-of-salmonella-enterica-from-aquatic-environmental-and-clinical-samples-in-taiwan
#14
Ying-Ning Ho, Hsin-Chi Tsai, Bing-Mu Hsu, Chien-Shun Chiou
Salmonella is one of the most common pathogens of waterborne and foodborne disease-causing pathogens. In this study, we collected 172 surface water samples from Puzih River and Kaoping River between the years 2010 and 2011. Salmonella was detected in 31.7% (32/101) and 42.2% (30/71) of the samples from the two rivers, respectively. From these positive samples, 44 Salmonella isolates were obtained from these positive samples and were characterized using serotyping and pulsed-field gel electrophoresis (PFGE) genotyping...
December 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29247743/the-global-role-for-cdc13-and-yku70-in-preventing-telomere-resection-across-the-genome
#15
James W Westmoreland, Michael J Mihalevic, Kara A Bernstein, Michael A Resnick
Yeast Cdc13 protein (related to human CTC1) maintains telomere stability by preventing 5'-3' end resection. While Cdc13 and Yku70/Yku80 proteins appear to prevent excessive resection, their combined contribution to maintenance of telomere ends across the genome and their relative roles at specific ends of different chromosomes have not been addressable because Cdc13 and Yku70/Yku80 double mutants are sickly. Using our PFGE-shift approach where large resected molecules have slower pulse field gel electrophoresis mobilities, along with methods for maintaining viable double mutants, we address end-resection on most chromosomes as well as telomere end differences...
November 29, 2017: DNA Repair
https://www.readbyqxmd.com/read/29243301/evaluation-of-the-live-biotherapeutic-product-asymptomatic-bacteriuria-escherichia-coli-2-12-in-healthy-dogs-and-dogs-with-clinical-recurrent-uti
#16
G Segev, J E Sykes, D J Klumpp, A J Schaeffer, E M Antaki, B A Byrne, R E Yaggie, J L Westropp
BACKGROUND: Antimicrobial resistance is an emerging problem. HYPOTHESIS/OBJECTIVE: To investigate the safety and efficacy of a live biotherapeutic product, ASB E. coli 2-12 for UTI treatment. ANIMALS: Six healthy research dogs; nine client-owned dogs with recurrent UTI. METHODS: Prospective noncontrolled clinical trial. For safety data, research dogs were sedated, a urinary catheter was inserted into the bladder; 1010 CFU/mL of ASB E...
December 15, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/29238454/phenotypic-and-genotypic-features-of-first-biofilm-forming-nasopharyngeal-colonized-streptococcus-pneumoniae-isolates
#17
Seyed Fazlollah Mousavi, Bahman Mirzaei, Bahareh Shaghaghi, Pantea Jalali, Tahereh Setayesh, Seyed Hamid Moosavi
Background and Objectives: Designing control and therapeutic policies for antibiotic resistant Streptococcus pneumoniae, which is an important causative agent of several invasive and noninvasive infectious diseases and its carriage rates, has been described as the main target in World Health Organization (WHO). The present study was conducted to determine antibiotic resistance pattern, evaluate biofilm forming ability in S. pneumoniae isolates, and find the genetic relationship between cultured strains...
August 2017: Iranian Journal of Microbiology
https://www.readbyqxmd.com/read/29237086/enterobacteriaceae-producing-oxa-48-like-carbapenemases-in-poland-2013-january-2017
#18
R Izdebski, A Baraniak, D Zabicka, M Machulska, P Urbanowicz, J Fiett, E Literacka, K Bojarska, A Kozinska, B Zieniuk, W Hryniewicz, M Gniadkowski
Objectives: To analyse OXA-48 (OXA-48/181)-type carbapenemase-producing Enterobacteriaceae reported in Poland from 2013 until January 2017. Methods: Bacterial isolates were typed by PFGE and MLST. Genes coding for OXA-48/181 types and other β-lactamases were amplified and sequenced. Mobile elements with blaOXA-48/181-like genes were PCR mapped. blaOXA-48/181-carrying plasmids were characterized by nuclease S1-hybridization profiling, transfer assays and PCR-based replicon typing, while the chromosomal location of the genes was confirmed by the I-CeuI analysis...
December 9, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29229490/pseudomonas-aeruginosa-intensive-care-unit-outbreak-winnowing-of-transmissions-with-molecular-and-genomic-typing
#19
Benjamin J Parcell, Katarina Oravcova, Miguel Pinheiro, Matthew T G Holden, Gabby Phillips, Jane F Turton, Stephen H Gillespie
BACKGROUND: Pseudomonas aeruginosa healthcare outbreaks can be time consuming and difficult to investigate. Guidance does not specify which typing technique is most practical to base decisions on. AIM: We explore the usefulness of whole genome sequencing (WGS) in the investigation of a Pseudomonas aeruginosa outbreak describing how it compares with pulsed-field gel electrophoresis (PFGE) and variable number tandem repeat (VNTR) analysis. METHODS: Six patient isolates and six environmental samples from an Intensive Care Unit (ICU) positive for P...
December 8, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29225413/outbreak-of-hospital-infection-from-biofilm-embedded-pan-drug-resistant-pseudomonas-aeroginosa-due-to-a-contaminated-bronchoscope
#20
Nader Alipour, Alper Karagoz, Abbas Taner, Nasrin Gaeini, Nastaran Alipour, Hassan Zeytin, Fatih Yildiz, Riza Durmaz
Background: Colistin-resistant Pseudomonas aeruginosa (P. aeruginosa) has been defined as pandrug-resistant (PDR) strain. Outbreaks of PDR P. aeruginosa especially in pulmonary tract infections due to contaminated bronchoscopes have rarely been reported. The emergence of pandrug-resistant strains in both CF (Cystic Fibrosis) and non-CF clinical isolates over recent years remains of a great concern. Hospital wards contaminated with PDR P. aeruginosa infection, must be shot down until their eradication...
2017: Tap Chi y Hoc du Phong, Journal of Preventive Medicine / Hoi y Hoc du Phong Viet Nam
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