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https://www.readbyqxmd.com/read/28644135/evaluation-of-thromboelastometry-parameters-as-predictive-markers-for-sinusoidal-obstruction-syndrome-in-patients-undergoing-allogeneic-stem-cell-transplantation-for-acute-leukaemia
#1
Joanna Rupa-Matysek, Lidia Gil, Ewelina Wojtasińska, Zuzanna Kanduła, Adam Nowicki, Magdalena Matuszak, Mieczysław Komarnicki
Hepatic sinusoidal obstruction syndrome (previously named veno-occlusive disease, SOS/VOD) is a serious complication of allogeneic stem cell transplantation (HSCT). Early identification of patients at risk of SOS/VOD may possibly improve the outcome and reduce mortality. Rotation thromboelastometry (ROTEM) is global assay allowing for the precise assessment of both bleeding and thrombotic conditions, however, its usefulness in patients undergoing HSCT for acute leukaemia has not been studied.We evaluated the thromboelastometry parameters in patients undergoing allogeneic HSCT for acute leukaemia to identify candidate biomarkers of SOS/VOD occurrence...
June 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28643383/multiecho-pseudo-golden-angle-stack-of-stars-thermometry-with-high-spatial-and-temporal-resolution-using-k-space-weighted-image-contrast
#2
Bryant T Svedin, Allison Payne, Bradley D Bolster, Dennis L Parker
PURPOSE: Implement and evaluate a 3D MRI method to measure temperature changes with high spatial and temporal resolution and large field of view. METHODS: A multiecho pseudo-golden angle stack-of-stars (SOS) sequence with k-space weighted image contrast (KWIC) reconstruction was implemented to simultaneously measure multiple quantities, including temperature, initial signal magnitude M(0), transverse relaxation time ( T2*), and water/fat images. Respiration artifacts were corrected using self-navigation...
June 22, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28634209/genetic-evidence-that-%C3%AE-arrestins-are-dispensable-for-the-initiation-of-%C3%AE-2-adrenergic-receptor-signaling-to-erk
#3
Morgan O'Hayre, Kelsie Eichel, Silvia Avino, Xuefeng Zhao, Dana J Steffen, Xiaodong Feng, Kouki Kawakami, Junken Aoki, Karen Messer, Roger Sunahara, Asuka Inoue, Mark von Zastrow, J Silvio Gutkind
The β2-adrenergic receptor (β2AR) has provided a paradigm to elucidate how G protein-coupled receptors (GPCRs) control intracellular signaling, including the discovery that β-arrestins, which bind to ligand-activated GPCRs, are central for GPCR function. We used genome editing, conditional gene deletion, and small interfering RNAs (siRNAs) to determine the roles of β-arrestin 1 (β-arr1) and β-arr2 in β2AR internalization, trafficking, and signaling to ERK. We found that only β-arr2 was essential for β2AR internalization...
June 20, 2017: Science Signaling
https://www.readbyqxmd.com/read/28632666/change-in-calcaneal-bone-strength-in-long-term-care-residents-treated-with-low-intensity-pulsed-ultrasound
#4
Hiroyasu Okuizumi, Kiyoshi Koyano, Kazuya Kurosawa, Naoto Kamide, Ayako Soyano
OBJECTIVE: We examined the effect of low-intensity pulsed ultrasound (LIPUS) on bone strength in osteoporotic elderly residents. MATERIALS AND METHODS: This was a randomized controlled trial. Elderly residents with osteoporosis in a long-term care facility were treated with LIPUS (oscillation frequency 100 KHz) that involved treatment of the heel bone for 2 minutes a day. The selection of the treated heel was decided randomly with a personal computer. The heel bone mineral density before and after treatment was measured by calcaneal quantitative ultrasound (GE-1000 Express)...
July 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28630302/new-perspective-on-spring-vegetation-phenology-and-global-climate-change-based-on-tibetan-plateau-tree-ring-data
#5
Bao Yang, Minhui He, Vladimir Shishov, Ivan Tychkov, Eugene Vaganov, Sergio Rossi, Fredrik Charpentier Ljungqvist, Achim Bräuning, Jussi Grießinger
Phenological responses of vegetation to climate, in particular to the ongoing warming trend, have received much attention. However, divergent results from the analyses of remote sensing data have been obtained for the Tibetan Plateau (TP), the world's largest high-elevation region. This study provides a perspective on vegetation phenology shifts during 1960-2014, gained using an innovative approach based on a well-validated, process-based, tree-ring growth model that is independent of temporal changes in technical properties and image quality of remote sensing products...
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28630215/mechanisms-of-primary-drug-resistance-in-fgfr1-amplified-lung-cancer
#6
Florian Malchers, Meryem Seda Ercanoglu, Daniel Schütte, Roberta Castiglione, Verena Tischler, Sebastian Michels, Ilona Dahmen, Johannes Brägelmann, Roopika Menon, Johannes M Heuckmann, Julie George, Sascha Ansén, Martin L Sos, Alex Soltermann, Martin Peifer, Jurgen Wolf, Reinhard Büttner, Roman K Thomas
<br />The 8p12-p11 locus is frequently amplified in squamous cell lung cancer (SQLC); the receptor tyrosine kinase fibroblast growth factor receptor 1 (FGFR1) being one of the most prominent targets of this amplification. Thus, small molecules inhibiting FGFRs have been employed to treat FGFR1-amplified SQLC. However, only about 11% of such FGFR1-amplified tumors respond to single agent FGFR inhibition and several tumors exhibited insufficient tumor shrinkage, compatible with the existence of drug-resistant tumor cells...
June 19, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28620855/physicochemical-characteristics-mutagenicity-and-genotoxicity-of-airborne-particles-under-industrial-and-rural-influences-in-northern-lebanon
#7
Pamela N Melki, Frédéric Ledoux, Samer Aouad, Sylvain Billet, Bilal El Khoury, Yann Landkocz, Roula M Abdel-Massih, Dominique Courcot
In this work, the main objectives were to assess the mutagenic and genotoxic effects of fine particulate matter collected in an industrial influenced site in comparison with a non-industrial influenced one (rural site) and to relate the particulate matter (PM) composition to the observed genotoxic effects. At the industrial influenced site, higher concentrations of phosphates, trace metals, and polycyclic aromatic hydrocarbons (PAHs) in particles could be related to the contributions of quarries, fertilizer producer, cement plants, and tires burning...
June 15, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28618189/comparative-genomics-of-the-dna-damage-inducible-network-in-the-patescibacteria
#8
Miquel Sánchez-Osuna, Jordi Barbé, Ivan Erill
Metagenomics provide unprecedented insights into the genetic diversity of uncultivated bacteria inhabiting natural environments. Recent surveys have uncovered a major radiation of candidate phyla encompassing the Patescibacteria superphylum. Patescibacteria have small genomes and a presumed symbiotic or parasitic lifestyle, but the difficulty in culturing representative members constrains the characterization of behavioral and adaptive traits. Here we combine in silico and in vitro approaches to characterize the SOS transcriptional response to DNA damage in the Patescibacteria superphylum...
June 15, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28616711/integrating-noe-and-rdc-using-sum-of-squares-relaxation-for-protein-structure-determination
#9
Y Khoo, A Singer, D Cowburn
We revisit the problem of protein structure determination from geometrical restraints from NMR, using convex optimization. It is well-known that the NP-hard distance geometry problem of determining atomic positions from pairwise distance restraints can be relaxed into a convex semidefinite program (SDP). However, often the NOE distance restraints are too imprecise and sparse for accurate structure determination. Residual dipolar coupling (RDC) measurements provide additional geometric information on the angles between atom-pair directions and axes of the principal-axis-frame...
June 14, 2017: Journal of Biomolecular NMR
https://www.readbyqxmd.com/read/28615362/drugging-the-catalytically-inactive-state-of-ret-kinase-in-ret-rearranged-tumors
#10
Dennis Plenker, Maximilian Riedel, Johannes Brägelmann, Marcel A Dammert, Rakhee Chauhan, Phillip P Knowles, Carina Lorenz, Marina Keul, Mike Bührmann, Oliver Pagel, Verena Tischler, Andreas H Scheel, Daniel Schütte, Yanrui Song, Justina Stark, Florian Mrugalla, Yannic Alber, André Richters, Julian Engel, Frauke Leenders, Johannes M Heuckmann, Jürgen Wolf, Joachim Diebold, Georg Pall, Martin Peifer, Maarten Aerts, Kris Gevaert, René P Zahedi, Reinhard Buettner, Kevan M Shokat, Neil Q McDonald, Stefan M Kast, Oliver Gautschi, Roman K Thomas, Martin L Sos
Oncogenic fusion events have been identified in a broad range of tumors. Among them, RET rearrangements represent distinct and potentially druggable targets that are recurrently found in lung adenocarcinomas. We provide further evidence that current anti-RET drugs may not be potent enough to induce durable responses in such tumors. We report that potent inhibitors, such as AD80 or ponatinib, that stably bind in the DFG-out conformation of RET may overcome these limitations and selectively kill RET-rearranged tumors...
June 14, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28614372/intestinal-organoids-model-human-responses-to-infection-by-commensal-and-shiga-toxin-producing-escherichia-coli
#11
Sayali S Karve, Suman Pradhan, Doyle V Ward, Alison A Weiss
Infection with Shiga toxin (Stx) producing Escherichia coli O157:H7 can cause the potentially fatal complication hemolytic uremic syndrome, and currently only supportive therapy is available. Lack of suitable animal models has hindered study of this disease. Induced human intestinal organoids (iHIOs), generated by in vitro differentiation of pluripotent stem cells, represent differentiated human intestinal tissue. We show that iHIOs with addition of human neutrophils can model E. coli intestinal infection and innate cellular responses...
2017: PloS One
https://www.readbyqxmd.com/read/28607160/a-pria-mutant-expressed-in-two-pieces-has-almost-full-activity-in-e-coli-k-12
#12
Maxime Leroux, Niketa Jani, Steven J Sandler
The ability to restart broken DNA replication forks is essential across all domains of life. In Escherichia coli, the priA, priB, priC and dnaT genes encode the Replication Restart Proteins (RRPs) to accomplish this task. PriA plays a critical role in Replication Restart such that its absence reveals a dramatic phenotype: poor growth, high basal levels of SOS expression, poorly partitioned nucleoids (Par(-)), UV sensitivity and recombination deficiency. PriA has 733 amino acids and its structure is composed of six domains that enable it to bind to DNA replication fork-like structures, re-model the strands of DNA, interact with SSB (single-stranded DNA binding protein), PriB and DnaT, and display ATPase, helicase and translocase activities...
June 12, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28601825/defining-and-measuring-suspicion-of-sepsis-an-analysis-of-routine-data
#13
Matthew Inada-Kim, Bethan Page, Imran Maqsood, Charles Vincent
OBJECTIVES: To define the target population of patients who have suspicion of sepsis (SOS) and to provide a basis for assessing the burden of SOS, and the evaluation of sepsis guidelines and improvement programmes. DESIGN: Retrospective analysis of routinely collected hospital administrative data. SETTING: Secondary care, eight National Health Service (NHS) Acute Trusts. PARTICIPANTS: Hospital Episode Statistics data for 2013-2014 was used to identify all admissions with a primary diagnosis listed in the 'suspicion of sepsis' (SOS) coding set...
June 9, 2017: BMJ Open
https://www.readbyqxmd.com/read/28600368/assessing-the-diagnostic-accuracy-of-pcr-based-detection-of-streptococcus-pneumoniae-from-nasopharyngeal-swabs-collected-for-viral-studies-in-canadian-adults-hospitalised-with-community-acquired-pneumonia-a-serious-outcomes-surveillance-sos-network-of-the-canadian
#14
Hayley D Gillis, Amanda L S Lang, May ElSherif, Irene Martin, Todd F Hatchette, Shelly A McNeil, Jason J LeBlanc
STUDY DESIGN: Detection and serotyping of Streptococcus pneumoniae are important to assess the impact of pneumococcal vaccines. This study describes the diagnostic accuracy of PCR-based detection of S. pneumoniae directly from nasopharyngeal (NP) swabs collected for respiratory virus studies. METHODS: Active surveillance for community-acquired pneumonia (CAP) in hospitalised adults was performed from December 2010 to 2013. Detection of pneumococcal CAP (CAPSpn) was performed by urine antigen detection (UAD), identification of S...
June 8, 2017: BMJ Open
https://www.readbyqxmd.com/read/28599872/hepatotoxicity-following-systemic-therapy-for-colorectal-liver-metastases-and-the-impact-of-chemotherapy-associated-liver-injury-on-outcomes-after-curative-liver-resection
#15
REVIEW
G Duwe, S Knitter, S Pesthy, A S Beierle, M Bahra, M Schmelzle, R B Schmuck, P Lohneis, N Raschzok, R Öllinger, M Sinn, B Struecker, I M Sauer, J Pratschke, A Andreou
Patients with colorectal liver metastases (CLM) have remarkably benefited from the advances in medical multimodal treatment and surgical techniques over the last two decades leading to significant improvements in long-term survival. More patients are currently undergoing liver resection following neoadjuvant chemotherapy, which has been increasingly established within the framework of curative-indented treatment strategies. However, the use of several cytotoxic agents has been linked to specific liver injuries that not only impair the ability of liver tissue to regenerate but also decrease long-term survival...
May 18, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28596524/association-between-carotid-plaque-and-cognitive-impairment-in-chinese-stroke-population-the-sos-stroke-study
#16
Anxin Wang, Xiaoxue Liu, Guojuan Chen, Hongjun Hao, Yongjun Wang, Yilong Wang
We aimed to investigate the association between carotid plaques and cognitive impairment among patients with acute ischemic stroke, and to assess key clinical implications. In the Acute Ischemic Stroke Study, patients who received a cognitive testing and underwent complete carotid artery ultrasound scans were included. Cognitive function was measured by the mini-mental state examination. The cross-sectional relationships between cognitive impairment and carotid plaques were evaluated using multivariate logistic regression analysis...
June 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28595068/molecular-topology-a-new-strategy-for-antimicrobial-resistance-control
#17
Riccardo Zanni, Maria Galvez-Llompart, Jesus Machuca, Ramon Garcia-Domenech, Esther Recacha, Alvaro Pascual, Jose Manuel Rodriguez-Martinez, Jorge Galvez
The control of antimicrobial resistance (AMR) seems to have come to an impasse. The use and abuse of antibacterial drugs has had major consequences on the genetic mutability of both pathogenic and nonpathogenic microorganisms, leading to the development of new highly resistant strains. Because of the complexity of this situation, an in silico strategy based on QSAR molecular topology was devised to identify synthetic molecules as antimicrobial agents not susceptible to one or several mechanisms of resistance such as: biofilms formation (BF), ionophore (IA) activity, epimerase (EI) activity or SOS system (RecA inhibition)...
May 30, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28591134/global-gene-expression-profiling-and-antibiotic-susceptibility-after-repeated-exposure-to-the-carbon-monoxide-releasing-molecule-2-corm-2-in-multidrug-resistant-esbl-producing-uropathogenic-escherichia-coli
#18
Charlotte Sahlberg Bang, Isak Demirel, Robert Kruse, Katarina Persson
Treatment of urinary tract infections is today a challenge due to the increasing prevalence of multidrug-resistant ESBL-producing uropathogenic Escherichia coli (UPEC). There is an urgent need for new treatment strategies for multidrug-resistant UPEC and preferably with targets that have low potential for development of resistance. Carbon monoxide-releasing molecules (CORMs) are novel and potent antibacterial agents. The present study examines the transcriptomic targets of CORM-2 in a multidrug-resistant ESBL-producing UPEC isolate in response to a single exposure to CORM-2 and after repeated exposure to CORM-2...
2017: PloS One
https://www.readbyqxmd.com/read/28590736/ozone-and-other-1-3-dipoles-toward-a-quantitative-measure-of-diradical-character
#19
Benoît Braïda, Sérgio E Galembeck, Philippe C Hiberty
Ozone and its sulfur-substituted isomers are studied by means of the Breathing Orbital Valence Bond ab initio method, with the objective of estimating their controversial diradical characters. The calculated weights of the various VB structures and their individual diabatic energies are found to be consistent with each other. All 1,3-dipoles can be described in terms of three major VB structures, one diradical and two zwitterionic ones, out of the six structures, forming a complete basis. Ozone has a rather large diradical character, estimated to 44%-49%...
June 21, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28572812/halophytes-potential-resources-for-salt-stress-tolerance-genes-and-promoters
#20
REVIEW
Avinash Mishra, Bhakti Tanna
Halophytes have demonstrated their capability to thrive under extremely saline conditions and thus considered as one of the best germplasm for saline agriculture. Salinity is a worldwide problem, and the salt-affected areas are increasing day-by-day because of scanty rainfall, poor irrigation system, salt ingression, water contamination, and other environmental factors. The salinity stress tolerance mechanism is a very complex phenomenon, and some pathways are coordinately linked for imparting salinity tolerance...
2017: Frontiers in Plant Science
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