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https://www.readbyqxmd.com/read/28792216/discrete-gef5-anion-structurally-characterized-with-a-readily-synthesized-imidazolium-based-naked-fluoride-reagent
#1
Blaž Alič, Melita Tramšek, Anton Kokalj, Gašper Tavčar
The recently prepared novel naked fluoride reagent 1,3-bis(2,6-diisopropylphenyl)imidazolium fluoride ([(L(Dipp))H][F]), treated with an excess of MF4 (M = Si, Ge), results in isolation of [(L(Dipp))H][MF5] products with the elusive trigonal bipyramidal MF5(-) anions. Specific steric characteristics of the [(L(Dipp))H](+) cation readily support isolation of monomeric and discrete trigonal bipyramidal fluorido anions of silicon and germanium. Based on combination of experimental results and DFT calculations, we demonstrate that the role of bulky cation is not solely due to steric hindering but also due to electrostatic effects, which are important in the design of such uncommon species...
August 9, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28780098/prevalence-and-characterization-of-methicillin-resistant-staphylococcus-aureus-carrying-meca-or-mecc-and-methicillin-susceptible-staphylococcus-aureus-in-dairy-sheep-farms-in-central-italy
#2
G Giacinti, V Carfora, A Caprioli, D Sagrafoli, N Marri, G Giangolini, R Amoruso, M Iurescia, F Stravino, S Dottarelli, F Feltrin, A Franco, S Amatiste, A Battisti
Between January and May 2012, a total of 286 bulk tank milk samples from dairy sheep farms located in central Italy were tested for the presence of Staphylococcus aureus. One hundred fifty-three samples were positive for S. aureus (53.5%), with an average count of 2.53 log cfu/mL. A total of 679 S. aureus colonies were screened for methicillin resistance by the cefoxitin disk diffusion test, and 104 selected cefoxitin-susceptible isolates were also tested for their susceptibility to other antimicrobials representative of the most relevant classes active against Staphylococcus spp...
August 2, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28743973/in-vivo-efficacy-of-%C3%AE-lactam-tripropeptin-c-in-a-mouse-septicemia-model-and-the-mechanism-of-reverse-%C3%AE-lactam-resistance-in-methicillin-resistant-staphylococcus-aureus-mediated-by-tripropeptin-c
#3
Hideki Hashizume, Yoshiaki Takahashi, Tohru Masuda, Shun-Ichi Ohba, Tomokazu Ohishi, Manabu Kawada, Masayuki Igarashi
Natural lipopeptide antibiotic tripropeptin C (TPPC) revitalizes and synergistically potentiates the activities of the class of β-lactam antibiotics against methicillin-resistant Staphylococcus aureus (MRSA) but not against methicillin-sensitive S. aureus in vitro; however, the mode of action remains unclear. In the course of the study to reveal its mode of action, we found that TPPC inhibited the β-lactamase production induced by cefotiam. This prompted us to focus on the β-lactam-inducible β-lactam-resistant genes blaZ (β-lactamase) and mecA (foreign penicillin-binding protein), as they are mutually regulated by the blaZ/I/R1 and mecA/I/R1 systems...
July 26, 2017: Journal of Antibiotics
https://www.readbyqxmd.com/read/28734577/characterization-of-a-pvl-negative-community-acquired-methicillin-resistant-staphylococcus-aureus-strain-of-sequence-type-88-in-china
#4
Lu Sun, Dandan Wu, Yan Chen, Qian Wang, Haiping Wang, Yunsong Yu
Sequence type 88 community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) strain SR434, isolated from an outpatient with skin and soft tissue infection, was subjected to whole genome sequencing, antimicrobial susceptibility testing, mouse skin infection model and hemolysis analysis to identify its virulence and resistance determinants. MRSA strain SR434 is resistant to clindamycin, erythromycin and fosfomycin. Four plasmids with resistance genes were identified in this strain, including a 20,658bp blaZ-carrying plasmid, a 2473bp ermC-carrying plasmid, a 2622bp fosB7-carrying plasmid (86% identity with plasmid in a ST2590 MRSA strain) and a 4817bp lnuA-carrying plasmid (99% identity with pLNU4 from bovine coagulase-nagetive Staphylococci)...
July 13, 2017: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/28729496/a-cirrus-cloud-climate-dial
#5
Ulrike Lohmann, Blaž Gasparini
No abstract text is available yet for this article.
July 21, 2017: Science
https://www.readbyqxmd.com/read/28729209/clonal-spread-of-methicillin-resistant-staphylococcus-aureus-t6065-cc5-sccmecv-agrii-in-a-libyan-hospital
#6
Monia Khemiri, Ali Akrout Alhusain, Mohamed Salah Abbassi, Houyem El Ghaieb, Sofia Santos Costa, Adriana Belas, Constança Pomba, Salah Hammami
OBJECTIVES: The aim of this study was to characterize 32 MRSA isolates recovered from wound specimens of patients in a Hospital in Tripoli, Libya, during 2013. METHODS: MRSA isolates were characterized by determining their antibiotic susceptibilities, genes encoding antibiotic resistance and virulence factors, the SCCmec class, agr type, spa typing, PFGE and MLST. RESULTS: PFGE and MLST revealed that all isolates were clonal and belonged to the Clonal Complex 5 (CC5)...
July 17, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28727158/hplc-fingerprinting-approach-for-raw-material-assesment-and-unit-operation-tracking-for-ivig-production-from-cohn-i-ii-iii-fraction
#7
Sebastijan Peljhan, Tina Jakop, Dunja Šček, Vid Skvarča, Blaž Goričar, Romina Žabar, Nina Mencin
The plasma derived immunoglobulin G (IgG) used either for diagnostic purpose or intravenous application (in form of IVIG) in various medical therapies is certainly gaining more and more attention on annual basis. Different manufacturing processes are used to isolate immunoglobulins from human plasma. However, a quest for alternative paths in IgG isolation not only requires development of the most efficient isolation process, but also a rapid and reliable analytics to track the purification. Fast and reliable fingerprint-based method for characterization of IgG prepared from Cohn I+II+III paste is presented in this paper...
July 20, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28717309/molecular-characterization-of-antibiotic-resistant-staphylococcus-aureus-from-livestock-bovine-and-swine
#8
Asima Zehra, Randhir Singh, Simranpreet Kaur, J P S Gill
AIM: The aim of this study was to figure the prevalence, phenotypic and genotypic antibiotic resistance (AR) pattern of Staphylococcus aureus isolated from bovine and swine nares. MATERIALS AND METHODS: Colonies with typical morphology on Baird-Parker agar supplemented with egg-yolk tellurite emulsion were selected and biochemically/genotypically identified as S. aureus. These strains were further subjected to epsilometer test for their sensitivity to various clinically important antibiotics and antibiotic susceptibility testing for amoxicillin/clavulanic acid, and double-disk diffusion testing was performed by the standard disc diffusion method following CLSI guidelines...
June 2017: Veterinary World
https://www.readbyqxmd.com/read/28713454/balance-basic-anthropometrics-and-performance-in-young-alpine-skiers-longitudinal-analysis-of-the-associations-during-two-competitive-seasons
#9
Blaz Lesnik, Damir Sekulic, Matej Supej, Michael R Esco, Milan Zvan
Balance is hypothesized to be important in alpine skiing, while it is known that balance depends on anthropometric indices. The aim of this investigation was to explore the association between balance, anthropometrics and skiing-results over two competitive seasons among youth alpine-skiers. Eighty-one skiers (40 females) participated in this study. The participants were tested twice over two competitive seasons: when they were 12-13 years old (U14) and when they were 14-15 years old (U16). The variables consisted of anthropometrics (body height and body mass) and three balance indexes (medio-lateral-, anterio-posterior- and overall-stability-index)...
June 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28669380/acute-kidney-injury-in-critically-ill-adult-patients-with-seasonal-influenza-infection
#10
Ana Dovč, Vladimir Premru, Blaž Pečavar, Rafael Ponikvar
BACKGROUND: Acute kidney injury (AKI) occurs in 22.4 - 100% of critically-ill hospitalized patients with influenza infection. In up to 2/3, it is severe enough to necessitate renal replacement therapy. We aimed to document the incidence of AKI among patients with influenza-related critical illness and its relation to clinical outcomes. METHODS: We conducted a retrospective observational study of all adult patients with acute respiratory illness and laboratory-confirmed influenza infection admitted to non-surgical intensive care units at the University Medical Centre Ljubljana between January 1, 2016, and March 31, 2016...
July 2, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28647622/risk-factors-for-unsuccessful-acetabular-press-fit-fixation-at-primary-total-hip-arthroplasty
#11
U Brulc, V Antolič, B Mavčič
BACKGROUND: Surgeon at primary total hip arthroplasty sometimes cannot achieve sufficient cementless acetabular press-fit fixation and must resort to other fixation methods. Despite a predominant use of cementless cups, this issue is not fully clarified, therefore we performed a large retrospective study to: (1) identify risk factors related to patient or implant or surgeon for unsuccessful intraoperative press-fit; (2) check for correlation between surgeons' volume of operated cases and the press-fit success rate...
June 21, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28621381/the-methodology-applied-in-dpph-abts-and-folin-ciocalteau-assays-has-a-large-influence-on-the-determined-antioxidant-potential
#12
Helena Abramovič, Blaž Grobin, Nataša Poklar, Blaž Cigić
Antioxidant potential (AOP) is not only the property of the matrix analyzed but also depends greatly on the methodology used. The chromogenic radicals 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS•+), 2,2-diphenyl-1-picrylhydrazyl (DPPH•) and Folin-Ciocalteu (FC) assay were applied to estimate how the method and the composition of the assay solvent influence the AOP determined for coffee, tea, beer, apple juice and dietary supplements. Large differences between the AOP values depending on the reaction medium were observed, with the highest AOP determined mostly in the FC assay...
June 2017: Acta Chimica Slovenica
https://www.readbyqxmd.com/read/28588310/the-development-of-fluorescent-protein-tracing-vectors-for-multicolor-imaging-of-clinically-isolated-staphylococcus-aureus
#13
Fuminori Kato, Motoki Nakamura, Motoyuki Sugai
Recent advances in fluorescent protein technology provide a wide variety of biological imaging applications; however current tools for bio-imaging in the Gram-positive bacterium Staphylococcus aureus has necessitated further developments for fluorescence intensity and for a multicolor palette of fluorescent proteins. To enhance the expression of multicolor fluorescent proteins in clinical S. aureus strains, we developed new fluorescent protein expression vectors, containing the blaZ/sodp promoter consisting of the β-lactamase gene (blaZ) promoter and the ribosome binding site (RBS) of superoxide dismutase gene (sod)...
June 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28578698/dictyexpress-a-web-based-platform-for-sequence-data-management-and-analytics-in-dictyostelium-and-beyond
#14
Miha Stajdohar, Rafael D Rosengarten, Janez Kokosar, Luka Jeran, Domen Blenkus, Gad Shaulsky, Blaz Zupan
BACKGROUND: Dictyostelium discoideum, a soil-dwelling social amoeba, is a model for the study of numerous biological processes. Research in the field has benefited mightily from the adoption of next-generation sequencing for genomics and transcriptomics. Dictyostelium biologists now face the widespread challenges of analyzing and exploring high dimensional data sets to generate hypotheses and discovering novel insights. RESULTS: We present dictyExpress (2.0), a web application designed for exploratory analysis of gene expression data, as well as data from related experiments such as Chromatin Immunoprecipitation sequencing (ChIP-Seq)...
June 2, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/28531417/obesity-in-the-elderly-weight-loss-yes-or-no
#15
Milena Kovač Blaž
No abstract text is available yet for this article.
August 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28522975/hypoxia-and-inactivity-related-physiological-changes-constipation-inflammation-are-not-reflected-at-the-level-of-gut-metabolites-and-butyrate-producing-microbial-community-the-planhab-study
#16
Robert Šket, Nicole Treichel, Tadej Debevec, Ola Eiken, Igor Mekjavic, Michael Schloter, Marius Vital, Jenna Chandler, James M Tiedje, Boštjan Murovec, Zala Prevoršek, Blaž Stres
We explored the assembly of intestinal microbiota in healthy male participants during the run-in (5 day) and experimental phases [21-day normoxic bed rest (NBR), hypoxic bedrest (HBR)], and hypoxic ambulation (HAmb) in a strictly controlled laboratory environment, balanced fluid, and dietary intakes, controlled circadian rhythm, microbial ambiental burden, and 24/7 medical surveillance. The fraction of inspired O2 (FiO2) and partial pressure of inspired O2 (PiO2) were 0.209 and 133.1 ± 0.3 mmHg for NBR and 0...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28498966/genprobis-web-server-for-mapping-of-sequence-variants-to-protein-binding-sites
#17
Janez Konc, Blaz Skrlj, Nika Erzen, Tanja Kunej, Dusanka Janezic
Discovery of potentially deleterious sequence variants is important and has wide implications for research and generation of new hypotheses in human and veterinary medicine, and drug discovery. The GenProBiS web server maps sequence variants to protein structures from the Protein Data Bank (PDB), and further to protein-protein, protein-nucleic acid, protein-compound, and protein-metal ion binding sites. The concept of a protein-compound binding site is understood in the broadest sense, which includes glycosylation and other post-translational modification sites...
May 11, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28497118/novel-%C3%AE-lactamase-blaarl-in-staphylococcus-arlettae
#18
Sabrina N Andreis, Vincent Perreten, Sybille Schwendener
Whole-genome sequencing of penicillin-resistant Staphylococcus arlettae strain SAN1670 from bovine mastitis milk revealed a novel β-lactamase operon consisting of the β-lactamase-encoding gene blaARL, the antirepressor-encoding gene blaR1ARL, and the repressor-encoding gene blaIARL. The functionality of blaARL was demonstrated by gene expression in Staphylococcus aureus. The blaARL operon was chromosomally located in SAN1670 and present in 10 additional unrelated strains, suggesting intrinsic penicillin resistance in S...
May 2017: MSphere
https://www.readbyqxmd.com/read/28478822/animal-nutrition-and-breeding-conditions-modify-the-physiology-of-isolated-primary-cells
#19
Irina Milisav, Blaž Banič, Dušan Šuput
Animal primary cell cultures are widely used in biomedical research to investigate cell metabolism, diseases and to devise novel treatments. Modern animal breeding techniques are developed to unify, control and reduce the amount of microorganisms that the animals are being exposed to. Furthermore, health monitoring and strict caging and handling protocols allow animals to be exposed only to a selected spectrum of microbes. We are starting to appreciate that nutrition can influence composition of gut microbiota that can impact hosting organism's physiology and can even result in development of pathological changes...
May 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28470080/genetic-characterisation-of-antimicrobial-resistance-and-virulence-genes-in-i-staphylococcus-aureus-i-isolated-from-commercial-broiler-chickens-in-the-durban-metropolitan-area-south-africa
#20
Nelisiwe Mkize, Oliver T Zishiri, Samson Mukaratirwa
Antimicrobial resistance of Staphylococcus aureus in human and veterinary medicine is a serious worldwide problem. The aim of this study was to investigate the prevalence of S. aureus in commercial broiler chickens as well as to establish antimicrobial susceptibility and the distribution of genetic determinants conferring resistance and virulence. One hundred and ninety-four samples were aseptically collected from broiler chicken slaughterhouses and retail outlets around the Durban metropolitan area in South Africa...
May 4, 2017: Journal of the South African Veterinary Association
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