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https://www.readbyqxmd.com/read/27921389/superiority-of-sds-lysis-over-saponin-lysis-for-direct-bacterial-identification-from-positive-blood-culture-bottle-by-maldi-tof-ms
#1
Yvan Caspar, Cécile Garnaud, Mariya Raykova, Sébastien Bailly, Marie Bidart, Danièle Maubon
PURPOSE: Fast species diagnosis has an important health care impact, as rapid and specific antibacterial therapy is of clear benefit for patient's outcome. Here we propose a new protocol for species identification directly from positive blood cultures. EXPERIMENTAL DESIGN: We compared four in-house protocols for bacterial identification by mass spectrometry directly from clinical positive blood cultures evaluating 2 lytic agents, SDS and saponin, and 2 protein extraction schemes, fast (FP) and long (LP)...
December 6, 2016: Proteomics. Clinical Applications
https://www.readbyqxmd.com/read/27914761/lactobacillus-iners-friend-or-foe
#2
REVIEW
Mariya I Petrova, Gregor Reid, Mario Vaneechoutte, Sarah Lebeer
The vaginal microbial community is typically characterized by abundant lactobacilli. Lactobacillus iners, a fairly recently detected species, is frequently present in the vaginal niche. However, the role of this species in vaginal health is unclear, since it can be detected in normal conditions as well as during vaginal dysbiosis, such as bacterial vaginosis, a condition characterized by an abnormal increase in bacterial diversity and lack of typical lactobacilli. Compared to other Lactobacillus species, L...
November 30, 2016: Trends in Microbiology
https://www.readbyqxmd.com/read/27910951/molecular-imaging-with-engineered-physiology
#3
Mitul Desai, Adrian L Slusarczyk, Ashley Chapin, Mariya Barch, Alan Jasanoff
In vivo imaging techniques are powerful tools for evaluating biological systems. Relating image signals to precise molecular phenomena can be challenging, however, due to limitations of the existing optical, magnetic and radioactive imaging probe mechanisms. Here we demonstrate a concept for molecular imaging which bypasses the need for conventional imaging agents by perturbing the endogenous multimodal contrast provided by the vasculature. Variants of the calcitonin gene-related peptide artificially activate vasodilation pathways in rat brain and induce contrast changes that are readily measured by optical and magnetic resonance imaging...
December 2, 2016: Nature Communications
https://www.readbyqxmd.com/read/27904414/near-infrared-spectroscopic-analysis-of-total-phenolic-content-and-antioxidant-activity-of-berry-fruits
#4
Jasenka Gajdoš Kljusurić, Kiril Mihalev, Ivana Bečić, Ivana Polović, Mariya Georgieva, Senka Djaković, Želimir Kurtanjek
This study evaluates the feasibility of using near-infrared (NIR) spectroscopy as a rapid and environmentally friendly technique for validation and prediction of the total phenolic content (TPC) and antioxidant activity (AOA) indices (as 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging, inhibition time (IT) of the Briggs-Rauscher oscillating reaction, and relative antioxidant capacity (RAC)) of berry fruit extracts. The analysed berry samples originated from Croatia (blackberries, wild blueberries, raspberries, red currants and strawberries) and Bulgaria (wild blueberries, raspberries and strawberries)...
June 2016: Food Technology and Biotechnology
https://www.readbyqxmd.com/read/27898690/isoflurane-exposure-induces-cell-death-microglial-activation-and-modifies-the-expression-of-genes-supporting-neurodevelopment-and-cognitive-function-in-the-male-newborn-piglet-brain
#5
Kevin D Broad, Jane Hassell, Bobbi Fleiss, Go Kawano, Mojgan Ezzati, Eridan Rocha-Ferreira, Mariya Hristova, Kate Bennett, Igor Fierens, Ryan Burnett, Badr Chaban, Daniel Alonso-Alconada, Aaron Oliver-Taylor, Ilias Tachsidis, Jamshid Rostami, Pierre Gressens, Robert D Sanders, Nicola J Robertson
Exposure of the brain to general anesthesia during early infancy may adversely affect its neural and cognitive development. The mechanisms mediating this are complex, incompletely understood and may be sexually dimorphic, but include developmentally inappropriate apoptosis, inflammation and a disruption to cognitively salient gene expression. We investigated the effects of a 6h isoflurane exposure on cell death, microglial activation and gene expression in the male neonatal piglet brain. Piglets (n = 6) were randomised to: (i) naive controls or (ii) 6h isoflurane...
2016: PloS One
https://www.readbyqxmd.com/read/27898020/multivalent-aptamers-versatile-tools-for-diagnostic-and-therapeutic-applications
#6
REVIEW
Mariya Vorobyeva, Pavel Vorobjev, Alya Venyaminova
Nucleic acid aptamers generated through an in vitro selection are currently extensively applied as very valuable biomolecular tools thanks to their prominent advantages. Diversity of spatial structures, ease of production through chemical synthesis and a large variety of chemical modifications make aptamers convenient building blocks for the generation of multifunctional constructs. An opportunity to combine different aptamer functionalities with other molecules of interest such as reporter groups, nanoparticles, chemotherapeutic agents, siRNA or antisense oligonucleotides provides a widest range of applications of multivalent aptamers...
November 25, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27893436/carbon-nanotubes-as-carriers-of-panax-ginseng-metabolites-and-enhancers-of-ginsenosides-rb1-and-rg1-anti-cancer-activity
#7
Mohamed H Lahiani, Souzan Eassa, Charlette Parnell, Zeid Nima, Anindya Ghosh, Alexandru S Biris, Mariya V Khodakovskaya
A major benefit to nanomaterial based-medicine is the ability to provide nanosized vehicles for sporadic metabolites. Here, we describe how the conjugation of valuable ginseng secondary metabolites (ginsenoside Rb1 or Rg1) with carbon nanotubes (CNT) can enhance their anti-proliferative and anti-cancer effects. Ginsenoside-CNT conjugate (Rb-CNT or Rg-CNT) permitted the ginsenosides to be used at a low dose, yet achieve a higher incidence of cancer killing. We were able to demonstrate that the ginsenoside-CNT conjugate can decrease cell viability up to 62% in breast cancer cells (MCF-7) and enhance antiproliferation of drug-resistant pancreatic cancer cells (PANC-1) by 61%...
January 6, 2017: Nanotechnology
https://www.readbyqxmd.com/read/27884938/the-russian-human-radiobiological-tissue-repository-a-unique-resource-for-studies-of-plutonium-exposed-workers
#8
Christopher Loffredo, David Goerlitz, Svetlana Sokolova, Leonidas Leondaridis, Mariya Zakharova, Valentina Revina, Evgeniya Kirillova
The Russian Radiobiological Human Tissue Repository (RHTR) at the Southern Urals Biophysics Institute in Ozyorsk, Russia, was established to collect and store biospecimens supporting research on health consequences of chronic, low-dose radiation exposures. The purpose of this paper is to describe the RHTR resources and the availability of high-quality biological specimens. RHTR has enrolled two groups of subjects from 1951 to the present time: exposed workers at the Mayak Production Association facilities and residents of Ozyorsk who were never occupationally exposed to ionizing radiation (controls)...
November 24, 2016: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/27884296/snapshotdx-quiz-december-2016
#9
Nayoung Lee, Mariya Miteva
No abstract text is available yet for this article.
December 2016: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/27884193/reorganising-specialist-cancer-surgery-for-the-twenty-first-century-a-mixed-methods-evaluation-respect-21
#10
Naomi J Fulop, Angus I G Ramsay, Cecilia Vindrola-Padros, Michael Aitchison, Ruth J Boaden, Veronica Brinton, Caroline S Clarke, John Hines, Rachael M Hunter, Claire Levermore, Satish B Maddineni, Mariya Melnychuk, Caroline M Moore, Muntzer M Mughal, Catherine Perry, Kathy Pritchard-Jones, David C Shackley, Jonathan Vickers, Stephen Morris
BACKGROUND: There are longstanding recommendations to centralise specialist healthcare services, citing the potential to reduce variations in care and improve patient outcomes. Current activity to centralise specialist cancer surgical services in two areas of England provides an opportunity to study the planning, implementation and outcomes of such changes. London Cancer and Manchester Cancer are centralising specialist surgical pathways for prostate, bladder, renal, and oesophago-gastric cancers, so that these services are provided in fewer hospitals...
November 25, 2016: Implementation Science: IS
https://www.readbyqxmd.com/read/27884053/disability-in-patients-with-end-stage-liver-disease-results-from-the-functional-assessment-in-liver-transplantation-frailt-study
#11
Mariya L Samoylova, Kenneth E Covinsky, Marta Haftek, Selena Kuo, John P Roberts, Jennifer C Lai
: Cirrhosis leads to sarcopenia and functional decline that can severely impact one's ability to function at home and in society. Self-reported disability scales to quantify disability - Activities of Daily Living (ADL) and Instrumental ADL (IADL) - are validated to predict mortality in older adults. To evaluate disability in liver transplant (LT) candidates and quantify its impact on outcomes, consecutive outpatients ≥18y listed for LT with laboratory Model for End-stage Liver Disease (MELD) score ≥12 at a single high-volume U...
November 24, 2016: Liver Transplantation
https://www.readbyqxmd.com/read/27878543/a-new-predictive-model-for-continuous-positive-airway-pressure-in-the-treatment-of-obstructive-sleep-apnea
#12
Matthew R Ebben, Mariya Narizhnaya, Ana C Krieger
BACKGROUND: Numerous mathematical formulas have been developed to determine continuous positive airway pressure (CPAP) without an in-laboratory titration study. Recent studies have shown that style of CPAP mask can affect the optimal pressure requirement. However, none of the current models take mask style into account. Therefore, the goal of this study was to develop new predictive models of CPAP that take into account the style of mask interface. METHODS: Data from 200 subjects with attended CPAP titrations during overnight polysomnograms using nasal masks and 132 subjects using oronasal masks were randomized and split into either a model development or validation group...
November 22, 2016: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/27869151/the-lectin-like-protein-1-in-lactobacillus-rhamnosus-gr-1-mediates-tissue-specific-adherence-to-vaginal-epithelium-and-inhibits-urogenital-pathogens
#13
Mariya I Petrova, Elke Lievens, Tine L A Verhoeven, Jean M Macklaim, Gregory Gloor, Dominique Schols, Jos Vanderleyden, Gregor Reid, Sarah Lebeer
The probiotic Lactobacillus rhamnosus GR-1 has been documented to survive implantation onto the vaginal epithelium and interfere with urogenital pathogens. However, the molecular mechanisms involved are largely unknown. Here, we report for the first time the construction of dedicated knock-out mutants in L. rhamnosus GR-1 to enable the study of gene functions. In a search for genes responsible for the adherence capacity of L. rhamnosus GR-1, a genomic region encoding a protein with homology to lectin-like proteins was identified...
November 21, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27853317/high-mannose-specific-lectin-msl-mediates-key-interactions-of-the-vaginal-lactobacillus-plantarum-isolate-cmpg5300
#14
Shweta Malik, Mariya I Petrova, Nicole C E Imholz, Tine L A Verhoeven, Sam Noppen, Els J M Van Damme, Sandra Liekens, Jan Balzarini, Dominique Schols, Jos Vanderleyden, Sarah Lebeer
To characterize the interaction potential of the human vaginal isolate Lactobacillus plantarum CMPG5300, its genome was mined for genes encoding lectin-like proteins. cmpg5300.05_29 was identified as the gene encoding a putative mannose-binding lectin. Phenotypic analysis of a gene knock-out mutant of cmpg5300.05_29 showed that expression of this gene is important for auto-aggregation, adhesion to the vaginal epithelial cells, biofilm formation and binding to mannosylated glycans. Purification of the predicted lectin domain of Cmpg5300...
November 17, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27829368/tfap-2-is-required-for-night-sleep-in-drosophila
#15
Mariya M Kucherenko, Vinodh Ilangovan, Bettina Herzig, Halyna R Shcherbata, Henrik Bringmann
BACKGROUND: The AP-2 transcription factor APTF-1 is crucially required for developmentally controlled sleep behavior in Caenorhabditis elegans larvae. Its human ortholog, TFAP-2beta, causes Char disease and has also been linked to sleep disorders. These data suggest that AP-2 transcription factors may be highly conserved regulators of various types of sleep behavior. Here, we tested the idea that AP-2 controls adult sleep in Drosophila. RESULTS: Drosophila has one AP-2 ortholog called TfAP-2, which is essential for viability...
November 9, 2016: BMC Neuroscience
https://www.readbyqxmd.com/read/27828845/early-effects-of-paroxysmal-atrial-fibrillation-on-plasma-markers-of-fibrinolysis
#16
Mariya Negreva, Svetoslav Georgiev, Katerina Vitlianova
There are no studies to date on the early changes in the hemostasis profile of patients with paroxysmal atrial fibrillation (PAF).Given the key role of the fibrinolytic system in maintaining blood fluidity, our aim was to examine its activity in patients with clinical manifestation of the disease <24 hours.We studied 51 nonanticoagulated patients with a first episode of the disease (26 men, 25 women; mean age 59.84 ± 1.60 years) and 52 controls (26 men, 26 women; mean age 59.50 ± 1.46 years) who matched the patients in terms of gender, age, comorbidities, and conducted treatment...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27822783/intraoperative-temperature-regulation-in-children-using-a-liquid-warming-garment
#17
Mariya E Skube, Robert D Acton, Victor S Koscheyev, Gloria R Leon, Daniel A Saltzman
PURPOSE: Children undergoing operative intervention while induced under general anesthesia are at risk for experiencing a significant decrease in core body temperature that can lead to adverse systemic effects. Given that the head contributes an estimated 18% of a child's body surface area, we theorized that a liquid-warming garment applied to the head could control a pediatric patient's core body temperature during surgical procedures. METHODS: Patients undergoing elective, non-cranial, general surgical procedures were enrolled in the study...
November 7, 2016: Pediatric Surgery International
https://www.readbyqxmd.com/read/27812011/hydrogen-separation-through-tailored-dual-phase-membranes-with-nominal-composition-bace0-8eu0-2o3-%C3%AE-ce0-8y0-2o2-%C3%AE-at-intermediate-temperatures
#18
Mariya E Ivanova, Sonia Escolástico, Maria Balaguer, Justinas Palisaitis, Yoo Jung Sohn, Wilhelm A Meulenberg, Olivier Guillon, Joachim Mayer, Jose M Serra
Hydrogen permeation membranes are a key element in improving the energy conversion efficiency and decreasing the greenhouse gas emissions from energy generation. The scientific community faces the challenge of identifying and optimizing stable and effective ceramic materials for H2 separation membranes at elevated temperature (400-800 °C) for industrial separations and intensified catalytic reactors. As such, composite materials with nominal composition BaCe0.8Eu0.2O3-δ:Ce0.8Y0.2O2-δ revealed unprecedented H2 permeation levels of 0...
November 4, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27803709/iodine-and-selenium-biofortification-with-additional-application-of-salicylic-acid-affects-yield-selected-molecular-parameters-and-chemical-composition-of-lettuce-plants-lactuca-sativa-l-var-capitata
#19
Sylwester Smoleń, Iwona Kowalska, Małgorzata Czernicka, Mariya Halka, Kinga Kęska, Włodzimierz Sady
Iodine (I) and selenium (Se) are included in the group of beneficial elements. They both play important roles in humans and other animals, particularly in the regulation of thyroid functioning. A substantial percentage of people around the world suffer from health disorders related to the deficiency of these elements in the diet. Salicylic acid (SA) is a compound similar to phytohormones and is known to improve the efficiency of I biofortification of plants. The influence of SA on Se enrichment of plants has not, however, been recognized together with its effect on simultaneous application of I and Se to plants...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27787922/bone-health-in-patients-with-hematopoietic-disorders-of-bone-marrow-origin-systematic-review-and-meta-analysis
#20
Kieran Steer, Mariya Stavnichuk, Martin Morris, Svetlana V Komarova
Blood cell production and bone homeostasis are physically interlinked systems that exhibit active cross-talk. We examined how bone health is affected in patients with hematopoietic disorders due to abnormal proliferation of bone marrow cells. The electronic databases Medline, Embase, PubMed, BIOSIS Previews, Web of Science, and Cochrane were searched for studies presenting numerical values for trabecular bone volume or bone mineral density in control and patients with hematopoietic disorders. We identified 5 studies for beta-thalassemia, 6 for sickle cell anemia, 2 for polycythemia vera and essential thrombocythemia, 3 for chronic myelogenous leukemia, 6 for myelofibrosis, 5 for multiple myeloma, and 4 studies each for systemic mastocytosis, lymphocytic leukemia, and hemochromatosis...
October 27, 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
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