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https://www.readbyqxmd.com/read/28527358/improving-the-pharmacokinetics-and-tissue-distribution-of-pyrinezolid-by-self-assembled-polymeric-micelles
#1
Haiyue Long, Xiaoling Li, Zitai Sang, Lan Mei, Tao Yang, Zicheng Li, Liangxue Zhou, Yu Zheng, Gu He, Gang Guo, Zhenling Wang, Yong Deng, Youfu Luo
Antibiotic-resistance by bacteria is a growing global concern within the healthcare field, and it has provided an impetus for continued antimicrobial development. Pyrinezolid (PZ), a novel oxazolidinone compound, can effectively inhibit most gram-positive bacteria, including methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococci (VRE). Though PZ is a promising antimicrobial candidate, the druggability of PZ is limited by its poor water solubility. Therefore, the amphipathic mPEG-PLLA copolymer was used to prepare the pyrinezolid micelles (PZ-M)...
May 8, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28515904/weekly-screening-supports-terminating-nosocomial-transmissions-of-vancomycin-resistant-enterococci-on-an-oncologic-ward-a-retrospective-analysis
#2
Stefanie Kampmeier, Dennis Knaack, Annelene Kossow, Stefanie Willems, Christoph Schliemann, Wolfgang E Berdel, Frank Kipp, Alexander Mellmann
BACKGROUND: To investigate the impact of weekly screening within the bundle of infection control measures to terminate vancomycin-resistant enterococci (VRE) transmissions on an oncologic ward. METHODS: A cluster of 12 VRE colonisation and five infections was detected on an oncologic ward between January and April 2015. Subsequently, the VRE point prevalence was detected and, as part of a the bundle of infection control strategies to terminate the VRE cluster, we isolated affected patients, performed hand hygiene training among staff on ward, increased observations by infection control specialists, intensified surface disinfection, used personal protective equipment and initiated an admission screening in May 2015...
2017: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/28515440/a-highly-potent-class-of-halogenated-phenazine-antibacterial-and-biofilm-eradicating-agents-accessed-through-a-modular-wohl-aue-synthesis
#3
Hongfen Yang, Yasmeen Abouelhassan, Gena M Burch, Dimitris Kallifidas, Guangtao Huang, Hussain Yousaf, Shouguang Jin, Hendrik Luesch, Robert W Huigens
Unlike individual, free-floating planktonic bacteria, biofilms are surface-attached communities of slow- or non-replicating bacteria encased within a protective extracellular polymeric matrix enabling persistent bacterial populations to tolerate high concentrations of antimicrobials. Our current antibacterial arsenal is composed of growth-inhibiting agents that target rapidly-dividing planktonic bacteria but not metabolically dormant biofilm cells. We report the first modular synthesis of a library of 20 halogenated phenazines (HP), utilizing the Wohl-Aue reaction, that targets both planktonic and biofilm cells...
May 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28511382/rapid-identification-of-vancomycin-resistant-enterococcus-faecalis-clinical-isolates-using-a-sugar-fermentation-method
#4
Javad Raeisi, Mahnaz Saifi, Mohammad Reza Pourshafie, Mehri Habibi, Hamid Reza Mohajerani, Neda Akbari, Mohammad Reza Asadi Karam
INTRODUCTION: Vancomycin Resistant Enterococci (VRE) can be found all over the world. Thus, rapid detection of the isolates could be of high importance in the treatment or prevention of the associated disease. AIM: To measure the turanose fermentation in Enterococcus faecalis clinical isolates for rapid differentiation of VRE and Vancomycin-Susceptible E. faecalis (VSE) isolates. MATERIALS AND METHODS: Forty E. faecalis samples were isolated from 200 clinical samples in Tehran Medical Center, Iran, from October 2012 to December 2012...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28507698/formicamycins-antibacterial-polyketides-produced-by-streptomyces-formicae-isolated-from-african-tetraponera-plant-ants
#5
Zhiwei Qin, John T Munnoch, Rebecca Devine, Neil A Holmes, Ryan F Seipke, Karl A Wilkinson, Barrie Wilkinson, Matthew I Hutchings
We report a new Streptomyces species named S. formicae that was isolated from the African fungus-growing plant-ant Tetraponera penzigi and show that it produces novel pentacyclic polyketides that are active against MRSA and VRE. The chemical scaffold of these compounds, which we have called the formicamycins, is similar to the fasamycins identified from the heterologous expression of clones isolated from environmental DNA, but has significant differences that allow the scaffold to be decorated with up to four halogen atoms...
April 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28506784/healthcare-personnelintestinal-colonization-with-multidrug-resistant-organisms
#6
Brooke K Decker, Anna F Lau, John P Dekker, Christine D Spalding, Ninet Sinaii, Sean Conlan, David K Henderson, Julia A Segre, Karen M Frank, Tara N Palmore
OBJECTIVES: This study aims to assess the association between patient contact and intestinal carriageof multidrug-resistant organisms (MDRO) by sampling healthcare personnel (HCP) and staff without patient contact. METHODS: For this observational study, we recruited400HCPwho worked in our 200-bed research hospitaland 400 subjectswithout patient contact between November 2013 and February 2015.Participants submitted two self-collected perirectal swabsand a questionnaire...
May 12, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28504889/genetic-characterization-of-vana-enterococcus-faecium-isolates-from-wild-red-legged-partridges-in-portugal
#7
Vanessa Silva, Gilberto Igrejas, Isabel Carvalho, Fernando Peixoto, Lucas Cardoso, José Eduardo Pereira, Rosa Del Campo, Patricia Poeta
Vancomycin-resistant enterococci (VRE) have been detected in wild animals representing a public health concern. The red-legged partridge (Alectoris rufa) is a common game bird and its meat is consumed in several countries, including Portugal. Three hundred five fecal samples of red-legged partridge from the north of Portugal were screened for VRE. Samples were cultured on Slanetz-Bartley agar supplemented with vancomycin (4 mg/L) and six vanA-Enterococcus faecium were recovered. Isolates were tested for antibiotic resistance and virulence genes...
May 15, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28500123/enterococcus-casseliflavus-septicaemia-associated-with-hepatobiliary-infection-in-a-75-year-old-man
#8
Rajanshu Verma, Allison L Baroco
Enterococcus casseliflavus is a rare non-faecium, non-faecalis, vancomycin-resistant enterococcus (VRE) that is responsible for up to 2% of all enterococcal infections. Septicaemia with this bacterium is usually seen in older patients with multiple comorbidities who have had several previous hospitalisations. Septicaemia with E. casseliflavus portends a poorer prognosis, and treatment usually involves administration of antienterococcal beta-lactams or anti-VRE medications such as linezolid or daptomycin. We present such a case of a 75-year-old man who developed E...
May 12, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28494240/cooperating-commensals-restore-colonization-resistance-to-vancomycin-resistant-enterococcus-faecium
#9
Silvia Caballero, Sohn Kim, Rebecca A Carter, Ingrid M Leiner, Bože Sušac, Liza Miller, Grace J Kim, Lilan Ling, Eric G Pamer
Antibiotic-mediated microbiota destruction and the consequent loss of colonization resistance can result in intestinal domination with vancomycin-resistant Enterococcus (VRE), leading to bloodstream infection in hospitalized patients. Clearance of VRE remains a challenging goal that, if achieved, would reduce systemic VRE infections and patient-to-patient transmission. Although obligate anaerobic commensal bacteria have been associated with colonization resistance to VRE, the specific bacterial species involved remain undefined...
May 10, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28490489/single-negative-van-qpcr-on-enrichment-broth-can-replace-five-rectal-swab-cultures-for-the-screening-of-vancomycin-resistent-enterococci
#10
J M Fonville, C M C van Herk, P H A C Das, J H B van de Bovenkamp, L van Dommelen
The increased incidence of vancomycin resistant Enterococcus spp. (VRE) causes an accumulation of patients that are either VRE-colonized or flagged as potentially VRE-colonized. Since such patients require precautionary isolation upon admission to a hospital, rapid methods to establish VRE-colonization status would improve patient care and optimize hospital operation. We evaluated van qPCR on one enrichment broth as a VRE-screening approach.We obtained 255 sets of five rectal specimens from 243 patients. The specimens were cultured using an amoxicillin-containing enrichment broth...
May 10, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28484708/activity-of-fosfomycin-and-daptomycin-containing-bone-cement-on-selected-bacterial-species-being-associated-with-orthopedic-infections
#11
Sigrun Eick, Kevin Hofpeter, Anton Sculean, Claudia Ender, Susann Klimas, Sebastian Vogt, Sandor Nietzsche
The purpose of this study was to determine activity of fosfomycin/gentamicin and daptomycin/gentamicin-containing PMMA bone-cement against Staphylococcus aureus (MRSA, MSSA), Staphylococcus epidermidis, Enterococcus faecium (VRE), and E. coli (ESBL; only fosfomycin). Test specimens of the bone cement were formed and bacteria in two concentrations were added one time or repeatedly up to 96 h. All fosfomycin-containing cement killed ultimately all MSSA, Staphylococcus epidermidis, and E. coli within 24 h; growth of MRSA was suppressed up to 48 h...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28480243/colonization-with-vancomycin-resistant-enterococci-and-risk-for-bloodstream-infection-among-patients-with-malignancy-a-systematic-review-and-meta-analysis
#12
Michail Alevizakos, Apostolos Gaitanidis, Dimitrios Nasioudis, Katerina Tori, Myrto Eleni Flokas, Eleftherios Mylonakis
BACKGROUND: Vancomycin-resistant enterococci (VRE) cause severe infections among patients with malignancy, and these infections are usually preceded by gastrointestinal colonization. METHODS: We searched the PubMed and EMBASE databases (up to May 26, 2016) to identify studies that reported data on VRE gastrointestinal colonization among patients with solid or hematologic malignancy. RESULTS: Thirty-four studies, reporting data on 8391 patients with malignancy, were included in our analysis...
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28464539/vancomycin-resistant-enterococci-with-vana-and-vanb-genes-in-australian-gulls
#13
Veronika Oravcova, Pavel Svec, Ivan Literak
This study is revealing the possible dissemination of vancomycin-resistant enterococci (VRE) from humans into the wildlife. We studied silver gulls (Chroicocephalus novaehollandiae) in Australia as potential carriers and reservoirs of VRE with acquired vancomycin resistance. In New South Wales (Australia), we have found two multi-resistant isolates belonging to Enterococcus faecium (sequence type 341, vanB genotype) and Enterococcus dispar (vanA genotype). Based on our knowledge, this is the first report of VRE in Australian wildlife...
May 2, 2017: Environmental Microbiology Reports
https://www.readbyqxmd.com/read/28454768/association-of-hospital-contact-precaution-policies-with-emergency-department-admission-time
#14
K Kotkowski, R T Ellison, C Barysauskas, B Barton, J Allison, D Mack, R W Finberg, M Reznek
BACKGROUND: Contact precautions are a widely accepted strategy to reduce in-hospital transmission of meticillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococci (VRE). However, these practices may have unintended deleterious effects on patients. AIM: To evaluate the effect of a modification in hospital-wide contact precaution practices on emergency department (ED) admission times. METHODS: During the study period, the hospital changed its contact precaution policy from requiring contact precautions for all patients with a history of MRSA or VRE to only those who presented with clinical conditions likely to contaminate the environment with pathogens...
March 24, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28453429/anti-microbial-coating-innovations-to-prevent-infectious-diseases-amici-cost-action-ca15114
#15
Colum P Dunne, Minna M Keinänen-Toivola, Anne Kahru, Birgit Teunissen, Hulya Olmez, Isabel Gouveia, Luis Melo, Kazimierz Murzyn, Martina Modic, Merja Ahonen, Pete Askew, Theofilos Papadopoulos, Christian Adlhart, Francy R L Crijns
Worldwide, millions of patients are affected annually by healthcare-associated infection (HCAI), impacting up to 80,000 patients in European Hospitals on any given day. This represents not only public health risk, but also an economic burden. Complementing routine hand hygiene practices, cleaning and disinfection, antimicrobial coatings hold promise based, in essence, on the application of materials and chemicals with persistent bactericidal or -static properties onto surfaces or in textiles used in healthcare environments...
April 28, 2017: Bioengineered
https://www.readbyqxmd.com/read/28437097/total-syntheses-of-vancomycin-related-glycopeptide-antibiotics-and-key-analogues
#16
Akinori Okano, Nicholas A Isley, Dale L Boger
A review of efforts that have provided total syntheses of vancomycin and related glycopeptide antibiotics, their agylcons, and key analogues is provided. It is a tribute to developments in organic chemistry and the field of organic synthesis that not only can molecules of this complexity be prepared today by total synthesis but such efforts can be extended to the preparation of previously inaccessible key analogues that contain deep-seated structural changes. With the increasing prevalence of acquired bacterial resistance to existing classes of antibiotics and with the emergence of vancomycin-resistant pathogens (VRSA and VRE), the studies pave the way for the examination of synthetic analogues rationally designed to not only overcome vancomycin resistance but provide the foundation for the development of even more powerful and durable antibiotics...
April 24, 2017: Chemical Reviews
https://www.readbyqxmd.com/read/28431846/implementation-of-daily-chlorhexidine-bathing-to-reduce-colonization-by-multidrug-resistant-organisms-in-a-critical-care-unit
#17
Jackson S Musuuza, Ajay K Sethi, Tonya J Roberts, Nasia Safdar
BACKGROUND: Colonized patients are a reservoir for transmission of multidrug-resistant organisms (MDROs). Not many studies have examined the effectiveness of daily chlorhexidine gluconate (CHG) bathing under routine care conditions. We present a descriptive analysis of the trends of MDRO colonization following implementation of daily CHG bathing under routine clinical conditions in an intensive care unit (ICU). METHODS: From May 2010-January 2011, we screened patients admitted to a 24-bed ICU for and methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant enterococci (VRE), and fluoroquinolone-resistant gram-negative bacilli (FQRGNB)...
April 18, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28428726/successful-treatment-of-prosthetic-joint-infection-due-to-vancomycin-resistant-enterococci-with-tedizolid
#18
Sheng Si, Michael J Durkin, Maureen M Mercier, Melanie L Yarbrough, Stephen Y Liang
Few antibiotic options exist for the management of infections due to vancomycin-resistant enterococci (VRE). We describe a case involving the safe and successful use of tedizolid, a new oxazolidinone, to treat VRE prosthetic joint infection.
March 2017: Infectious Diseases in Clinical Practice: IDCP
https://www.readbyqxmd.com/read/28423435/-pathogen-spectrum-of-complex-wounds-in-germany-from-war-zones
#19
Hans Joachim Riesner, Benedikt Friemert, Patricia Lang, Hans Georg Palm, Arnold J Suda
Background Treatment of the injured from war zones with wounds with multi-resistant pathogens is becoming more common in Germany, especially in German Armed Forces Hospitals. In most cases, the pre-treatment of these patients has been inadequate and they have a high load of rare pathogens. In Germany, hospitals have to evaluate these pathogens by law. The aim of this study was to review current German guidelines and data on the array of pathogens of complex trauma wounds in Germany and to compare patients with wounds and multi-resistant pathogens from war zones treated in Germany...
April 19, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28412932/isolation-of-enterococci-their-antimicrobial-susceptibility-patterns-and-associated-factors-among-patients-attending-at-the-university-of-gondar-teaching-hospital
#20
Amelework Yilema, Feleke Moges, Sisay Tadele, Mengistu Endris, Afework Kassu, Wondwossen Abebe, Getnet Ayalew
BACKGROUND: Enterococci become clinically important especially in immune compromised patients and important causes of nosocomial infections. Data on the prevalence, antimicrobial susceptibility patterns and associated factors of enterococci are scarce in Ethiopia. METHODS: A hospital based cross-sectional study was conducted at the University of Gondar Teaching Hospital from February 28, 2014 to May 1, 2014. Pretested structured questionnaire was used to collect socio-demographic data and possible associated factors of enterococci infections...
April 17, 2017: BMC Infectious Diseases
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