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https://www.readbyqxmd.com/read/27925693/identification-of-n-arylated-nh125-analogues-as-rapid-eradicating-agents-against-mrsa-persister-cells-and-potent-biofilm-killers-of-gram-positive-pathogens
#1
Yasmeen Abouelhassan, Akash Basak, Hussain Yousaf, Robert William Huigens Iii
Bacterial biofilms housing dormant persister cells are innately tolerant to antibiotics and disinfectants, yet several membrane-active agents are known to eradicate tolerant bacterial cells. NH125, a membrane-active persister-killer and starting point for development, led to the identification of N-arylated analogues 1 and 2 and displayed improved biofilm-killing potencies and rapid persister-killing activities in stationary cultures of methicillin-resistant Staphylococcus aureus (MRSA). We found 1 and 2 to be superior to other membrane-active agents in biofilm eradication assays with 1 demonstrating minimum biofilm eradication concentrations (MBEC) of 23...
December 7, 2016: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/27919742/refugees-and-antimicrobial-resistance-a-systematic-review
#2
REVIEW
Allard Willem de Smalen, Hatem Ghorab, Moataz Abd El Ghany, Grant A Hill-Cawthorne
BACKGROUND: There is a large increase in the numbers of refugees and asylum seekers worldwide and a lack of data on the carriage of antimicrobial resistance in refugee/asylum seeking groups. METHODS: This article aims to identify the impact of refugees and asylum seekers on the acquisition and transmission of antimicrobial resistance (AMR) through a literature search. The databases Embase, Medline, Pubmed, and Web of Science Core Collection were utilised and covered all articles before the 1st of October 2016...
December 2, 2016: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/27916031/-experience-of-the-selection-and-maintainence-for-donor-lung-62-cases-attached
#3
G L Peng, X Xu, D X Huang, B Wei, D Xiao, W Wang, Y D Wang, J X He
Objective: To summarize the experience of selection and maintainence for the lungs from donation. Methods: From January 2015 to June 2016, 62 cases had been evaluated by Department of Thoracic Surgery, First Affiliated Hospital of Guangzhou Medical University. All the clinic data had been collected to evaluate the donor lungs, including the basic information, physical examination, results of radiology and laboratory, the bronchoscope, etc. All the satisfactory donors had been harvested and transplanted to the receipient and then follow up...
December 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27914002/phenotypic-and-genotypic-characterization-of-bacteriocinogenic-enterococci-against-clostridium-botulinum
#4
Awad A Shehata, Reda Tarabees, Shereen Basiouni, Mahmoud Gamil, Ahmed S Kamal, Monika Krüger
The present study aimed to characterize Enterococcus faecalis (n = -6) and Enterococcus faecium (n = 1) isolated from healthy chickens to find a novel perspective probiotic candidate that antagonize Clostridium botulinum types A, B, D, and E. The isolated enterococci were characterized based on phenotypic properties, PCR, and matrix-assisted laser desorption/ionization time of flight (MALDI-TOF). The virulence determinants including hemolytic activity on blood agar, gelatinase activity, sensitivity to vancomycin, and presence of gelatinase (gelE) and enterococcal surface protein (esp) virulence genes were investigated...
December 2, 2016: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/27905623/-mortality-analysis-of-enterococcus-faecium-bloodstream-infection-in-central-taiwan
#5
Chen Chang-Hua, Lin Li-Chen, Chang Yu-Jun, Chang Chih-Yen
BACKGROUND: Bloodstream infections (BSIs) due to Enterococcus faecium (E. faecium), particularly those due to vancomycin-resistant enterococcus (VRE), are still a therapeutic challenge. AIM: To evaluate mortality from BSI due to E. faecium and VRE in central Taiwan. MATERIALS AND METHODS: We retrospectively analyzed cases of significant E. faecium BSI in the Changhua Christian Hospital System between January 1, 2010 and December 31, 2013. RESULTS: Of the 76 cases, 28 patients (36...
August 2016: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/27904114/two-cases-of-proteinase-3-anti-neutrophil-cytoplasmic-antibody-pr3-anca-related-nephritis-in-infectious-endocarditis
#6
Kazuya Hirai, Naoto Miura, Masabumi Yoshino, Kanyu Miyamoto, Hironobu Nobata, Takuhito Nagai, Keisuke Suzuki, Shogo Banno, Hirokazu Imai
We herein report two cases of proteinase 3-anti-neutrophil cytoplasmic antibody (PR3-ANCA)-related nephritis in infectious endocarditis. In both cases, the patients were middle-aged men with proteinuria and hematuria, hypoalbuminemia, decreased kidney function, anemia, elevated C-reactive protein (CRP) levels, and PR3-ANCA positivity. Each had bacteremia, due to Enterococcus faecium in one and Streptococcus bovis in the other. One patient received aortic valve replacement therapy for aortic regurgitation with vegetation, and the other underwent tricuspid valve replacement therapy and closure of a ventricular septic defect to treat tricuspid regurgitation with vegetation...
2016: Internal Medicine
https://www.readbyqxmd.com/read/27902396/determination-of-antimicrobial-resistance-of-enterococcus-strains-isolated-from-pigs-and-their-genotypic-characterization-by-method-of-amplification-of-dna-fragments-surrounding-rare-restriction-sites-the-adsrrs-fingerprinting
#7
Aneta Nowakiewicz, Grażyna Ziółkowska, Aleksandra Trościańczyk, Przemysław Zięba, Sebastian Gnat
In this study, we analysed phenotypic resistance profiles and their reflection in the genomic profiles of Enterococcus spp. strains isolated from pigs raised on different farms. Samples were collected from five pig farms (n=90 animals) and tested for Enterococcus. Minimum inhibitory concentrations of 12 antimicrobials were determined using the broth microdilution method, and epidemiological molecular analysis of strains belonging to selected species (E. faecalis, E. faecium and E. hirae) was performed using the ADSRRS-fingerprinting method with a few modifications...
November 28, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27895857/frequency-of-vana-vanb-and-vanh-variants-amongst-vancomycin-resistant-enterococci-isolated-from-patients-in-central-region-of-iran
#8
Jaafar Rezvani, Reza Nasr, Fatemeh T Shamsabadi, Mohammad Reza Akbari Eidgahi
AIM: The aim of this study was to investigate the VRE frequency and the rate of each gene in isolated enterococci from patients with intestinal infection in the central region of Iran. BACKGROUND: Enterococci infections are a public health growing concern due to the glycopeptide antibiotics resistance especially vancomycin. Genes, vanA, B, and H contribute to the influence of vancomycin-resistant enterococci (VRE). PATIENTS AND METHODS: This study was conducted from January to July 2014 in Shahrood university hospital...
2016: Gastroenterology and Hepatology From Bed to Bench
https://www.readbyqxmd.com/read/27895354/nosocomial-infections-in-the-icu-pens-and-spectacles-as-fomites
#9
Haris Farooq Murad, Khowaja Mohammad Inam Pal
Nosocomial infections are a major cause of morbidity and mortality. Non-medical objects known as fomites may have a role in their genesis. We investigated the significance of writing pens and spectacles as fomites. The study was conducted at Aga Khan University Hospital, Karachi, from July 2013 to September 2013. Cultures were taken from pens and/or spectacles of resident nurses, doctors and nursing assistants in intensive care unit (ICU). Organisms important in ICU nosocomial infections were targeted. Seven rounds of sampling over 3 weeks led to 55 pen and 5 spectacle samples...
October 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27894963/longitudinal-surveillance-on-antibiogram-of-important-gram-positive-pathogens-in-southern-china-2001-to-2015
#10
Zhenbo Xu, Jinhong Xie, Brian M Peters, Bing Li, Lin Li, Guangchao Yu, Mark E Shirtliff
OBJECTIVES: A longitudinal surveillance aimed to investigate the antibiogram of three genus of important Gram-positive pathogens in Southern China during 2001-2015. METHODS: A total of 3849 Staphylococcus, Enterococcus and Streptococcus strains were isolated from Southern China during 2001-2015. Bacteria identification was performed by colony morphology, Gram staining, the API commercial kit and the Vitek 2 automated system. Antimicrobial susceptibility testing was determined by disk diffusion method and MIC method...
November 25, 2016: Microbial Pathogenesis
https://www.readbyqxmd.com/read/27894856/glycopeptide-resistance-links-with-inorganic-phosphate-metabolism-and-cell-envelope-stress
#11
REVIEW
Fernando Santos-Beneit, María Ordóñez-Robles, Juan F Martín
Antimicrobial resistance is a critical health issue today. Many pathogens have become resistant to many or all available antibiotics and limited new antibiotics are in the pipeline. Glycopeptides are used as a 'last resort' antibiotic treatment for many bacterial infections, but worryingly, glycopeptide resistance has spread to very important pathogens such as Enterococcus faecium and Staphylococcus aureus. Bacteria confront multiple stresses in their natural environments, including nutritional starvation and the action of cell-wall stressing agents...
November 25, 2016: Biochemical Pharmacology
https://www.readbyqxmd.com/read/27894288/bactericidal-and-antioxidant-properties-of-essential-oils-from-the-fruits-dennettia-tripetala-g-baker
#12
Sunday O Okoh, Benson C Iweriegbor, Omobola O Okoh, Uchechukwu U Nwodo, Anthony I Okoh
BACKGROUND: The antibacterial and antioxidant properties of the essential oils (EOs) of unripe and ripe fruits of Dennettia tripetala and their potential for the management of infectious and oxidative-stress diseases were investigated in-vitro in this study. METHOD: Essential oil obtained from the fruit in Clevenger modified apparatus, was characterized by high resolution GC-MS, while antioxidant and antibacterial properties were tested by spectrophotometric and agar diffusion methods respectively...
November 28, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27893790/detection-of-a-cfr-b-variant-in-german-enterococcus-faecium-clinical-isolates-and-the-impact-on-linezolid-resistance-in-enterococcus-spp
#13
Jennifer K Bender, Carola Fleige, Ingo Klare, Stefan Fiedler, Alexander Mischnik, Nico T Mutters, Kate E Dingle, Guido Werner
The National Reference Centre for Staphylococci and Enterococci in Germany has received an increasing number of clinical linezolid-resistant E. faecium isolates in recent years. Five isolates harbored a cfr(B) variant gene locus the product of which is capable of conferring linezolid resistance. The cfr(B)-like methyltransferase gene was also detected in Clostridium difficile. Antimicrobial susceptibility was determined for cfr(B)-positive and linezolid-resistant E. faecium isolates and two isogenic C. difficile strains...
2016: PloS One
https://www.readbyqxmd.com/read/27891372/experience-with-splenic-abscess-from-southern-india
#14
Mallikarjuna Shetty, Swaroopa Deme, Knkj Mohan, Krishna Prasad Adiraju, Nageswar Rao Modugu, Naval Chandra, Amvr Narendra, Sathyanarayana Raju Yadati
INTRODUCTION: Splenic abscess is a rare entity with potentially life threatening complications. Sparse recent published data are available documenting the aetiological profile and management of patients with splenic abscess from India. AIM: To study the clinical profile of splenic abscess. MATERIALS AND METHODS: We retrospectively collected data from case records of admitted patients with splenic abscesses, to Nizam's Institute of Medical Sciences and Hospital which is a multispecialty, tertiary care referral hospital over a period of 15 months (from March 2014 to May 2015) and parameters studied were age, sex, symptoms, signs, risk factors, investigations like Ultrasound, CT scan, blood & microbiological culture, treatment and outcome...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27890970/enterococcus-faecium-hdrsef1-protects-the-intestinal-epithelium-and-attenuates-etec-induced-il-8-secretion-in-enterocytes
#15
Zhongyuan Tian, Xiaofang Liu, Ran Dai, Yuncai Xiao, Xiliang Wang, Dingren Bi, Deshi Shi
The probiotic Enterococcus faecium HDRsEf1 (Ef1) has been shown to have positive effects on piglet diarrhoea, but the mechanism has not yet been elucidated. In this study, using the IPEC-J2 cell line to mimic intestinal epithelial cells and enterotoxigenic Escherichia coli (ETEC) K88ac as a representative intestinal pathogen, the mechanism underlying Ef1 protection against an enteropathogen was investigated. The results demonstrated that Ef1 was effective in displacing K88ac from the IPEC-J2 cell layer. Moreover, Ef1 and its cell-free supernatant (S-Ef1) modulate IL-8 released by IPEC-J2 cells...
2016: Mediators of Inflammation
https://www.readbyqxmd.com/read/27889877/maldi-tof-ms-meets-wgs-in-a-vre-outbreak-investigation
#16
S Schlebusch, G R Price, R L Gallagher, V Horton-Szar, L D H Elbourne, P Griffin, D J Venter, S O Jensen, S J Van Hal
The use of MALDI-TOF MS (matrix-assisted laser desorption/ ionization-time of flight mass spectrometry) and WGS (whole genome sequencing) has been described for identification and strain relatedness determination. We describe the complementary use of MALDI-TOF MS and WGS in a VRE (vancomycin-resistant enterococci) outbreak investigation, and discuss some of the challenges with defining strain similarity across these two platforms. Although both assays indicated multiple clusters involved in the outbreak of vancomycin resistant Enterococcus faecium isolates from positive blood cultures of four haematology-oncology patients, the small cohort and discrepancies between findings indicate the limitations of MALDI-TOF MS and the cautious interpretation of MALDI-TOF MS dendrograms during outbreaks...
November 26, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27889157/monitoring-of-wheat-lactic-acid-bacteria-from-the-field-until-the-first-step-of-dough-fermentation
#17
Antonio Alfonzo, Claudia Miceli, Anna Nasca, Elena Franciosi, Giusi Ventimiglia, Rosalia Di Gerlando, Kieran Tuohy, Nicola Francesca, Giancarlo Moschetti, Luca Settanni
The present work was carried out to retrieve the origin of lactic acid bacteria (LAB) in sourdough. To this purpose, wheat LAB were monitored from ear harvest until the first step of fermentation for sourdough development. The influence of the geographical area and variety on LAB species/strain composition was also determined. The ears of four Triticum durum varieties (Duilio, Iride, Saragolla and Simeto) were collected from several fields located within the Palermo province (Sicily, Italy) and microbiologically investigated...
April 2017: Food Microbiology
https://www.readbyqxmd.com/read/27886064/probiotic-supplements-beneficially-affect-tryptophan-kynurenine-metabolism-and-reduce-the-incidence-of-upper-respiratory-tract-infections-in-trained-athletes-a-randomized-double-blinded-placebo-controlled-trial
#18
Barbara Strasser, Daniela Geiger, Markus Schauer, Johanna M Gostner, Hannes Gatterer, Martin Burtscher, Dietmar Fuchs
BACKGROUND: Prolonged intense exercise has been associated with transient suppression of immune function and an increased risk of infections. In this context, the catabolism of amino acid tryptophan via kynurenine may play an important role. The present study examined the effect of a probiotic supplement on the incidence of upper respiratory tract infections (URTI) and the metabolism of aromatic amino acids after exhaustive aerobic exercise in trained athletes during three months of winter training...
November 23, 2016: Nutrients
https://www.readbyqxmd.com/read/27861767/antibiotic-resistance-in-healthcare-related-and-nosocomial-spontaneous-bacterial-peritonitis
#19
Philipp Lutz, Hans Dieter Nischalke, Benjamin Krämer, Felix Goeser, Dominik J Kaczmarek, Stefan Schlabe, Marijo Parcina, Jacob Nattermann, Achim Hoerauf, Christian P Strassburg, Ulrich Spengler
BACKGROUND: Spontaneous bacterial peritonitis (SBP) can be life-threatening in patients with liver cirrhosis. In contrast to community-acquired SBP, no standard treatment has been established for healthcare-related and nosocomial SBP. PATIENTS AND METHODS: We prospectively collected healthcare-related and nosocomial SBP cases from March 2012 till February 2016 at the Department of Internal Medicine I of the University of Bonn and analysed the prevalence of antibiotic resistance among the isolated bacteria...
November 15, 2016: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27856575/complete-genome-sequence-of-the-siphoviral-bacteriophage-ec-zz2-which-is-capable-of-lysing-enterococcus-faecium
#20
Jinghua Li, Hongyan Shi, Chunyan Zhao, Yuchong Hao, Yingze He, Yanbo Sun
A virulent bacteriophage (Ec-ZZ2) that infects Enterococcus faecium was isolated from sewage. The bacteriophage belongs to the family Siphoviridae and has a linear double-stranded DNA genome, with a length of 41,170 bp and a 34.59% G+C content, which is highly similar to Enterococcus phage IME-EF4.
November 17, 2016: Genome Announcements
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