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https://www.readbyqxmd.com/read/28427133/-effects-of-application-of-vancomycin-in-the-early-stage-of-patients-with-extremely-severe-burn
#1
Z Zhu, G W Cao, J J Bao, Z H Hu, Z Shen, H Tao, B Cao, F Xu
Objective: To evaluate the effects of application of vancomycin in the early stage of patients with extremely severe burn, in order to provide reference to drug for anti-infection treatment in the early stage of patients with extremely severe burn. Methods: Data of 15 patients of Kunshan explosion on August 2nd, 2014, admitted to the Department of Intensive Care in our hospital were retrospectively analyzed. The clinical efficacy of continuously intravenous dripping of vancomycin (combined with imipenem) in the early stage of burns (before and on post burn day 14) was analyzed...
April 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28423435/-pathogen-spectrum-of-complex-wounds-in-germany-from-war-zones
#2
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/28406232/peptidoglycan-o-acetylation-increases-in-response-to-vancomycin-treatment-in-vancomycin-resistant-enterococcus-faecalis
#3
James D Chang, Erin E Foster, Ashley G Wallace, Sung Joon Kim
Vancomycin resistance is conferred upon vancomycin-resistant enterococci (VRE) through the replacement of peptidoglycan (PG) stem terminal d-Ala-d-Ala with d-Ala-d-Lac. The d-Ala-d-Lac incorporation can affect both the fitness and virulence of VRE. Here we comprehensively investigate the changes to PG composition in vancomycin-resistant Enterococcus faecalis following the growth in presence of vancomycin using liquid chromatography-mass spectrometry. Using high-resolution mass spectrometry, 104 unique muropeptides fragments were identified and the relative abundance of each fragment was accurately quantified by integrating the ion current of a selected ion using extracted-ion chromatogram...
April 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28402152/daptomycin-nonsusceptible-vancomycin-resistant-enterococcus-bloodstream-infections-in-patients-with-hematological-malignancies-risk-factors-and-outcomes
#4
Erica S Herc, Carol A Kauffman, Bernard L Marini, Anthony J Perissinotti, Marisa H Miceli
Daptomycin is typically the treatment of choice for vancomycin resistant Enterococcus (VRE) bloodstream infections (BSI) in patients with hematological malignancies, but increasingly daptomycin nonsusceptible VRE are being reported. We reviewed our experience with daptomycin nonsusceptible VRE BSI among patients with hematological malignancies. We compared risk factors and outcomes of 20 patients with daptomycin nonsusceptible VRE BSI (case patients) with 40 matched control patients with daptomycin susceptible VRE BSI...
April 12, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28389278/prenylated-flavonoids-from-the-stems-and-roots-of-tripterygium-wilfordii
#5
Yang Chen, Jianping Zhao, Yixing Qiu, Hanwen Yuan, Shabana I Khan, Nusrat Hussain, M Iqbal Choudhary, Feng Zeng, De-An Guo, Ikhlas A Khan, Wei Wang
Phytochemical investigation on the stems and roots of Tripterygium wilfordii led to the isolation and characterization of three new prenylated flavanones, tripteryols A-C (1-3), along with (±)-5,4'-dihydroxy-2'-methoxy-6',6″-dimethypyraro-(2″,3″:7,8)-6-methyflavanone (4), and ((2S)-5,7,4'-trihydroxy-2'-methoxy-8,5'-di(3-methyl-2-butenyl)-6-methylflavanone (5). Structures of the compounds 1-5 were elucidated using spectroscopic techniques, such as UV, IR, NMR (1D and 2D), and HRESI-MS. Tripteryols B (2) was found active in the antimicrobial assay against Cryptococcus neoformans, Pseudomonas aeruginosa, vancomycin-resistant Enterococcus faecalis (VRE) and methicillin-resistant Staphylococcus aureus (MRSA) with IC50 values in the range of 2...
April 5, 2017: Fitoterapia
https://www.readbyqxmd.com/read/28389190/detection-of-vancomycin-resistant-enterococci-vre-in-stool-specimens-submitted-for-clostridium-difficile-toxin-testing
#6
Sevim Özsoy, Arzu İlki
The aim of this study was to determine the association between Clostridium difficile (C. difficile) and vancomycin-resistant Enterococcus (VRE) and efficacy of screening stools submitted for C. difficile toxin assay for prevalence of VRE. Between April 2012 and February 2014, 158 stool samples submitted for C. difficile toxin to the Marmara University Microbiology Laboratory, were included in the study. Stool samples were analyzed by enzyme immuno assay test; VIDAS (bioMerieux, France) for Toxin A&B. Samples were inoculated on chromID VRE (bioMerieux, France) and incubated 24h at 37°C...
March 17, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28378583/iodinated-meroditerpenes-from-a-red-alga-callophycus-sp
#7
Serge Lavoie, David Brumley, Troy S Alexander, Christine Jasmin, Franz A Carranza, Kate Nelson, Cassandra L Quave, Julia Kubanek
Unique iodine-containing meroditerpenes iodocallophycoic acid A (1) and iodocallophycols A-D (2-5) were discovered from the Fijian red alga Callophycus sp. Because flexibility of the molecular skeleton impaired full characterization of relative stereochemistries by NMR spectroscopy, a DFT-based theoretical model was developed to derive relevant interproton distances which were compared to those calculated from NOE measurements, yielding the relative stereochemistries. The correct 2S,6S,7S,10S,14S enantiomers were then identified by comparison of theoretical and experimental ECD spectra...
April 13, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28371348/quaternized-and-thiazole-functionalized-free-radical-generating-organometallic-dendrimers-as-antimicrobial-platform-against-multidrug-resistant-microorganisms
#8
Alaa S Abd-El-Aziz, Christian Agatemor, Nola Etkin, Rabin Bissessur, David Overy, Martin Lanteigne, Katherine McQuillan, Russell G Kerr
New macromolecules such as dendrimers are increasingly needed to drive breakthroughs in diverse areas, for example, healthcare. Here, the authors report hybrid antimicrobial dendrimers synthesized by functionalizing organometallic dendrimers with quaternary ammonium groups or 2-mercaptobenzothiazole. The functionalization tunes the glass transition temperature and antimicrobial activities of the dendrimers. Electron paramagnetic resonance spectroscopy reveals that the dendrimers form free radicals, which have significant implications for catalysis and biology...
March 31, 2017: Macromolecular Bioscience
https://www.readbyqxmd.com/read/28369204/prediction-of-bloodstream-infection-due-to-vancomycin-resistant-enterococci-in-patients-undergoing-leukemia-induction-or-hematopoietic-stem-cell-transplantation
#9
Brandon J Webb, Regan Healy, Jacob Majers, Zachary Burr, Michaela Gazdik, Bert Lopansri, Daanish Hoda, Finn Bo Petersen, Clyde Ford
Background.: Bloodstream infection (BSI) due vancomycin-resistant Enterococcus (VRE) is an important complication of hematologic malignancy. Determining when to use empiric anti-VRE antibiotic therapy in this population remains a clinical challenge. Methods.: A single-center cohort representing 664 admissions for induction or hematopoietic stem cell transplant (HSCT) from 2006-2014 was selected. We derived a prediction score using risk factors for VRE BSI and evaluated the model's predictive performance by calculating it for each of 16,232 BSI at-risk inpatient days...
March 20, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28362945/complex-routes-of-nosocomial-vancomycin-resistant-enterococcus-faecium-transmission-revealed-by-genome-sequencing
#10
Kathy E Raven, Theodore Gouliouris, Hayley Brodrick, Francesc Coll, Nicholas M Brown, Rosy Reynolds, Sandra Reuter, M Estée Török, Julian Parkhill, Sharon J Peacock
Background: Vancomycin-resistant Enterococcus faecium (VREfm) is a leading cause of nosocomial infection. Here, we describe the utility of whole-genome sequencing in defining nosocomial VREfm transmission. Methods: A retrospective study at a single hospital in the United Kingdom identified 342 patients with E. faecium bloodstream infection over 7 years. Of these, 293 patients had a stored isolate and formed the basis for the study. The first stored isolate from each case was sequenced (200 VREfm [197 vanA, 2 vanB, and 1 isolate containing both vanA and vanB], 93 vancomycin-susceptible E...
April 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28348103/risk-factors-and-outcomes-of-vancomycin-resistant-enterococcus-colonization-in-patients-on-peritoneal-dialysis-a-single-center-study-in-hong-kong
#11
Ching Shan Yeung, Chi Yuen Cheung, Yiu Han Chan, Wai-Leung Chak
♦ Background: Vancomycin-resistant Enterococcus (VRE) colonization is common among patients with chronic kidney disease. However, data concerning VRE colonization among patients receiving peritoneal dialysis (PD) is lacking. The aim of this study is to evaluate the risk factors and various clinical outcomes for VRE colonization among PD patients. ♦ Methods: This is a retrospective cohort study of 166 PD patients who were hospitalized between 1 August 2013 and 31 July 2014. They were screened for VRE colonization status during a major VRE outbreak in Hong Kong in 2013 and were then categorized into 2groups: VRE-positive and VRE-negative...
March 27, 2017: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
https://www.readbyqxmd.com/read/28346839/characterization-of-vancomycin-resistant-enterococcus-faecalis-and-enterococcus-faecium-isolated-from-fresh-produces-and-human-fecal-samples
#12
Min-Chan Kim, Min-Hyeok Cha, Jae-Gee Ryu, Gun-Jo Woo
Increased enterococcal infections in hospitals and multidrug-resistant and vancomycin-resistant enterococci (VRE) isolated from humans, animals, and food sources raised public health concern on the presence of VRE in multiple sources. We performed a comparative analysis of the antimicrobial resistance and genetics of VRE isolates derived from fresh produce and human fecal samples. Of 389 Enterococcus isolates, 8 fecal and 3 produce isolates were resistant to vancomycin and teicoplanin; all harbored vanA gene...
April 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28335205/photosensitizer-embedded-polyacrylonitrile-nanofibers-as-antimicrobial-non-woven-textile
#13
Sarah L Stanley, Frank Scholle, Jiadeng Zhu, Yao Lu, Xiangwu Zhang, Xingci Situ, Reza A Ghiladi
Toward the objective of developing platform technologies for anti-infective materials based upon photodynamic inactivation, we employed electrospinning to prepare a non-woven textile comprised of polyacrylonitrile nanofibers embedded with a porphyrin-based cationic photosensitizer; termed PAN-Por((+)). Photosensitizer loading was determined to be 34.8 nmol/mg material; with thermostability to 300 °C. Antibacterial efficacy was evaluated against four bacteria belonging to the ESKAPE family of pathogens (Staphylococcus aureus; vancomycin-resistant Enterococcus faecium; Acinetobacter baumannii; and Klebsiella pneumonia), as well as Escherichia coli...
April 20, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28329222/effect-of-daptomycin-dose-on-the-outcome-of-vancomycin-resistant-daptomycin-susceptible-enterococcus-faecium-bacteremia
#14
Yu-Chung Chuang, Hsin-Yi Lin, Pao-Yu Chen, Chi-Ying Lin, Jann-Tay Wang, Yee-Chun Chen, Shan-Chwen Chang
Background.: Treatment options for vancomycin-resistant enterococci (VRE) bloodstream infection (BSI) are limited. Daptomycin, although not currently approved for this indication, is frequently used for the treatment of VRE-BSI. Its optimal dose still needs to be determined. Methods.: We conducted a prospective, observational, cohort study during 2010-2015. We included patients who received a daptomycin dose of ≥6 mg/kg for the treatment of VRE-BSI caused by daptomycin-susceptible VRE...
April 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28322345/nursing-staff-fluctuation-and-pathogenic-burden-in-the-nicu-effective-outbreak-management-and-the-underestimated-relevance-of-non-resistant-strains
#15
Kai O Hensel, Rhea van den Bruck, Ingo Klare, Michael Heldmann, Beniam Ghebremedhin, Andreas C Jenke
In the course of a hospital management takeover, a microbial outbreak took place in a tertiary neonatal intensive care unit (NICU). Here, we characterize the outbreak and its management. About 4 months prior to takeover, there was a sharp increase in positive isolates for MSSA and multidrug-resistant organisms (MDROs). Simultaneously, the nursing staff sick leave rate increased dramatically which directly correlated with the number of infection/colonization per week (r(2) = 0.95, p = 0.02). During the following months we observed several peaks in positive isolates of methicillin-sensitive staphylococcus aureus (MSSA), MDROs and subsequently a vancomycin-resistant enterococcus (VRE) outbreak...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28321210/production-of-ramoplanin-and-ramoplanin-analogs-by-actinomycetes
#16
Mercedes de la Cruz, Ignacio González, Craig A Parish, Russell Onishi, José R Tormo, Jesús Martín, Fernando Peláez, Debbie Zink, Noureddine El Aouad, Fernando Reyes, Olga Genilloud, Francisca Vicente
Ramoplanin is a glycolipodepsipeptide antibiotic obtained from fermentation of Actinoplanes sp. ATCC 33076 that exhibits activity against clinically important multi-drug-resistant, Gram-positive pathogens including vancomycin-resistant Enterococcus (VRE), methicillin-resistant Staphylococcus aureus (MRSA), and vancomycin-intermediate resistant Clostridium difficile. It disrupts bacterial cell wall through a unique mechanism of action by sequestering the peptidoglycan intermediate Lipid II and therefore does not show cross-resistance with other antibiotics...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28316844/aspergillus-pericarditis-with-tamponade-in-a-renal-transplant-patient
#17
Sylvia Biso, Rapeepat Lekkham, Antoinette Climaco
Aspergillus pericarditis is a rare and life-threatening infection in immunosuppressed patients. It has nonspecific clinical manifestations that often mimic other disease entities especially in patients who have extensive comorbidities. Diagnosis is oftentimes delayed and rarely done antemortem. A high degree of suspicion in immunocompromised patients is necessary for evaluation and timely diagnosis. This is a case of Aspergillus pericarditis with cardiac tamponade in a renal transplant patient with liver cirrhosis...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28301471/genomic-confirmation-of-vancomycin-resistant-enterococcus-transmission-from-deceased-donor-to-liver-transplant-recipient
#18
Ali Bashir, Oliver Attie, Mitchell Sullivan, Robert Sebra, Kavindra V Singh, Deena Altman, Theodore Pak, Jayeeta Dutta, Kieran Chacko, Elizabeth Webster, Martha Lewis, Camille Hamula, Kristin W Delli Carpini, Barbara E Murray, Andrew Kasarskis, Harm van Bakel, Shirish Huprikar
In a liver transplant recipient with vancomycin-resistant Enterococcus (VRE) surgical site and bloodstream infection, a combination of pulsed-field gel electrophoresis, multilocus sequence typing, and whole genome sequencing identified that donor and recipient VRE isolates were highly similar when compared to time-matched hospital isolates. Comparison of de novo assembled isolate genomes was highly suggestive of transplant transmission rather than hospital-acquired transmission and also identified subtle internal rearrangements between donor and recipient missed by other genomic approaches...
2017: PloS One
https://www.readbyqxmd.com/read/28295441/fosfomycin-for-the-treatment-of-cystitis-in-the-abdominal-solid-organ-transplant-population
#19
Ashley A Loethen, Luiza Kerstenetzky, Jillian L Descourouez, Glen E Leverson, Jeannina A Smith, Margaret R Jorgenson
STUDY OBJECTIVES: To evaluate the use of fosfomycin (FOS) at the single-dose regimen approved by the U.S. Food and Drug Administration as well as off-label multidose regimens for the treatment of cystitis after abdominal solid organ transplant (aSOT). DESIGN: Retrospective study. SETTING: Tertiary academic medical center. PATIENTS: Adult inpatients with history of aSOT receiving FOS between January 1, 2009, and April 30, 2015, for the treatment of cystitis...
March 12, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28288575/lactobacillus-derived-extracellular-vesicles-enhance-host-immune-responses-against-vancomycin-resistant-enterococci
#20
Ming Li, Kiho Lee, Min Hsu, Gerard Nau, Eleftherios Mylonakis, Bharat Ramratnam
BACKGROUND: Probiotic bacteria are known to modulate host immune responses against various pathogens. Recently, extracellular vesicles (EVs) have emerged as potentially important mediators of host-pathogen interactions. In this study, we explored the role of L. plantarum derived EVs in modulating host responses to vancomycin-resistant Enterococcus faecium (VRE) using both Caenorhabditis elegans and human cells. RESULTS: Our previous work has shown that probiotic conditioning C...
March 14, 2017: BMC Microbiology
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