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https://www.readbyqxmd.com/read/29330047/an-intrinsically-disordered-domain-in-polaribacter-irgensii-kopri-22228-cspb-confers-extraordinary-freeze-tolerance
#1
Youn Hong Jung, Ji-Hyun Uh, Kyunghee Lee, Hana Im
Organisms living in extremely cold environments possess mechanisms to survive low temperatures. Among the known cold-induced genes, cold-shock proteins (Csps) are the most prominent. A csp-homologous gene, cspBPi, has been cloned from the Arctic bacterium Polaribacter irgensii KOPRI 22228, and overexpression of this gene greatly increased the freezing tolerance of its host. This protein consists of a unique N-terminal domain and a well conserved C-terminal cold shock domain. To elucidate the detailed mechanisms involved in the extraordinary freeze-tolerance conferred by CspBPi, we identified the responsible domain by mutational analysis...
January 9, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29329324/variability-and-cost-implications-of-three-generations-of-the-roche-lightcycler%C3%A2-480
#2
Maria Dullaert-de Boer, Onno W Akkerman, Marloes Vermeer, Dorine L J Hess, Huib A M Kerstjens, Richard M Anthony, Tjip S van der Werf, Dick van Soolingen, Adri G M van der Zanden
Real time PCR has become a dominant method for the highly sensitive detection of pathogens in clinical material. Real time PCR can generate a fluorescence signal by using fluorescence labelled probes, allowing us to detect and semi quantify the amount of amplified DNA. Here we test the variability of the detection system and cost implications of three different versions of the LightCycler® 480 (LC480), focusing on the intensity of fluorescence and Cq in monoplex and multiplex rtPCRs. For gastro-intestinal pathogens there was no correlation between the intensity of fluorescence and the Cq value in the different LC480 types...
2018: PloS One
https://www.readbyqxmd.com/read/29325583/an-integrated-delivery-of-care-approach-to-improve-patient-reported-physical-function-and-mental-wellbeing-after-orthopedic-trauma-study-protocol-for-a-randomized-controlled-trial
#3
Laura Zdziarski-Horodyski, MaryBeth Horodyski, Kalia K Sadasivan, Jennifer Hagen, Terrie Vasilopoulos, Matthew Patrick, Robert Guenther, Heather K Vincent
BACKGROUND: Orthopedic trauma injury impacts nearly 2.8 million people each year. Despite surgical improvements and excellent survivorship rates, many patients experience poor quality of life (QOL) outcomes years later. Psychological distress commonly occurs after injury. Distressed patients more frequently experience rehospitalizations, pain medication dependence, and low QOL. This study was developed to test whether an integrative care approach (IntCare; ten-step program of emotional support, education, customized resources, and medical care) was superior to usual care (UsCare)...
January 11, 2018: Trials
https://www.readbyqxmd.com/read/29316055/dedicated-warfarin-care-programme-results-in-superior-warfarin-control-in-queensland-australia
#4
Nijole Bernaitis, Tony Badrick, Shailendra Anoopkumar-Dukie
BACKGROUND: Warfarin is used to prevent stroke in patients with atrial fibrillation (AF). Ongoing monitoring of International normalised ratio (INR) and time in therapeutic range (TTR) commonly used to assess the quality of warfarin management are required. Anticoagulant clinics have demonstrated improved TTRs, particularly in countries with poorer control in primary care settings. Reported TTR in Australia has been relatively high; so, it is unknown if benefit would be seen from dedicated warfarin clinics in Australia...
January 9, 2018: International Journal of Clinical Practice
https://www.readbyqxmd.com/read/29310402/a-rare-variation-of-celiac-trunk-and-hepatic-artery-complicating-pancreaticoduodenectomy-a-case-report-and-literature-review
#5
Zhou Ye, Song Ye, Dongkai Zhou, Shusen Zheng, Weilin Wang
RATIONALE: Anatomical variations of the celiac trunk and the hepatic artery are of considerable importance in hepatopancreatobiliary surgery, liver transplants, and radiological abdominal interventions. PATIENT CONCERNS: Here, we report a 57-year-old man with 2 weeks of painless progressive jaundice. Preoperative imaging and cytology brush results suggested an ampullary tumor and common hepatic artery anomaly (CTA) was reported. The patient underwent pancreaticoduodenectomy (PD)...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29310225/sensitive-and-fast-characterization-of-site-specific-protein-glycosylation-with-capillary-electrophoresis-coupled-to-mass-spectrometry
#6
Yanyan Qu, Liangliang Sun, Guijie Zhu, Zhenbin Zhang, Elizabeth H Peuchen, Norman J Dovichi
Glycoproteomic analysis requires efficient separation and sensitive detection to enable the comprehensive characterization of glycan heterogeneity. Here, we report the use of capillary zone electrophoresis-electrospray ionization-mass spectrometry (CZE-ESI-MS) with an electrokinetically-pumped nanospray interface for the study of protein glycosylation microheterogeneity. A fast separation was developed that resolved intact glycopeptides generated from standard proteins within ~9min. Differentially terminal-galactosylated and sialylated species with the same glycosylation sites were well resolved...
March 1, 2018: Talanta
https://www.readbyqxmd.com/read/29309670/comparison-of-the-average-surviving-fraction-model-with-the-integral-biologically-effective-dose-model-for-an-optimal-irradiation-scheme
#7
Ryo Takagi, Yuriko Komiya, Kenneth L Sutherland, Hiroki Shirato, Hiroyuki Date, Masahiro Mizuta
In this paper, we compare two radiation effect models: the average surviving fraction (ASF) model and the integral biologically effective dose (IBED) model for deriving the optimal irradiation scheme and show the superiority of ASF. Minimizing the effect on an organ at risk (OAR) is important in radiotherapy. The biologically effective dose (BED) model is widely used to estimate the effect on the tumor or on the OAR, for a fixed value of dose. However, this is not always appropriate because the dose is not a single value but is distributed...
January 4, 2018: Journal of Radiation Research
https://www.readbyqxmd.com/read/29308812/using-pegylated-magnetic-nanoparticles-to-describe-the-epr-effect-in-tumor-for-predicting-therapeutic-efficacy-of-micelle-drugs
#8
Ling Chen, Fengchao Zang, Haoan Wu, Jianzhong Li, Jun Xie, Ming Ma, Ning Gu, Yu Zhang
Micelle drugs based on a polymeric platform offer great advantages over liposomal drugs for tumor treatment. Although nearly all of the nanomedicines approved in the clinical use can passively target to the tumor tissues on the basis of an enhanced permeability and retention (EPR) effect, the nanodrugs have shown heterogenous responses in the patients. This phenomenon may be traced back to the EPR effect of tumor, which is extremely variable in the individuals from extensive studies. Nevertheless, there is a lack of experimental data describing the EPR effect and predicting its impact on therapeutic efficacy of nanoagents...
January 8, 2018: Nanoscale
https://www.readbyqxmd.com/read/29307722/physical-therapy-vs-internet-based-exercise-training-for-patients-with-knee-osteoarthritis-results-of-a-randomized-controlled-trial
#9
Kelli D Allen, Liubov Arbeeva, Leigh F Callahan, Yvonne M Golightly, Adam P Goode, Bryan C Heiderscheit, Kim M Huffman, Herbert H Severson, Todd A Schwartz
OBJECTIVE: To compare the effectiveness of physical therapy (PT, evidence-based approach) and internet-based exercise training (IBET), each versus a wait list (WL) control, among individuals with knee osteoarthritis (OA). DESIGN: Randomized controlled trial of 350 participants with symptomatic knee OA, allocated to standard PT, IBET and WL control in a 2:2:1 ratio, respectively. The PT group received up to 8 individual visits within 4 months. The IBET program provided tailored exercises, video demonstrations, and guidance on progression...
January 4, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29305642/feasibility-and-validity-of-printing-3d-heart-models-from-rotational-angiography
#10
Manoj Parimi, John Buelter, Vignan Thangundla, Sri Condoor, Nadeem Parkar, Saar Danon, Wilson King
Rotational angiography (RA) has proven to be an excellent method for evaluating congenital disease (CHD) in the cardiac cath lab, permitting acquisition of 3D datasets with superior spatial resolution. This technique has not been routinely implemented for 3D printing in CHD. We describe our case series of models printed from RA and validate our technique. All patients with models printed from RA were selected. RA acquisitions from a Toshiba Infinix-I system were postprocessed and printed with a Stratasys Eden 260...
January 5, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29303204/a-versatile-platform-for-the-highly-efficient-preparation-of-graphene-quantum-dots-photoluminescence-emission-and-hydrophilicity-hydrophobicity-regulation-and-organelle-imaging
#11
Xiaolong Wu, Liling Ma, Shan Sun, Kai Jiang, Ling Zhang, Yuhui Wang, Haibo Zeng, Hengwei Lin
In this work, a versatile platform for the highly efficient preparation of graphene quantum dots (GQDs) with diverse properties was developed. First of all, an excess amount of oxidants and an additional high temperature step of the Hummers' method for the synthesis of graphene oxide (GO) was applied to obtain nanosized graphene oxide (NGO). Then, high quality GQDs (quantum yields up to 18.2%) with different photoluminescence emission wavelengths, adjustable hydrophilicity-hydrophobicity, and selective cell organelle imaging capacity can be facilely achieved through a one-pot hydrothermal reaction between the NGO and ammonia, fatty primary amines, or amino-substituted organelle targetable compounds, respectively...
January 5, 2018: Nanoscale
https://www.readbyqxmd.com/read/29298388/defect-free-encapsulation-of-fe0-in-2d-fused-organic-networks-as-a-durable-oxygen-reduction-electrocatalyst
#12
Seok-Jin Kim, Javeed Mahmood, Changmin Kim, Gao-Feng Han, Seong-Wook Kim, Sun-Min Jung, Guomin Zhu, James J De Yoreo, Guntae Kim, Jong-Beom Baek
Because they provide lower-cost but comparable activity to precious platinum (Pt)-based catalysts, non-precious iron (Fe)-based materials, such as Fe/Fe3C and Fe-N-C, have gained considerable attention as electrocatalysts for the oxygen reduction reaction (ORR). However, their practical application is hindered by their poor stability, which is attributed to the defective protection of extremely unstable Fe nanoparticles. Here, we introduce a synthesis strategy for a stable Fe-based electrocatalyst, which was realized by defect-free encapsulation of Fe nanoparticles using a two-dimensional (2D) phenazine-based fused aromatic porous organic network (Aza-PON)...
January 3, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29297076/effect-of-mechanically-expanded-vs-self-expanding-transcatheter-aortic-valve-replacement-on-mortality-and-major-adverse-clinical-events-in-high-risk-patients-with-aortic-stenosis-the-reprise-iii-randomized-clinical-trial
#13
Ted E Feldman, Michael J Reardon, Vivek Rajagopal, Raj R Makkar, Tanvir K Bajwa, Neal S Kleiman, Axel Linke, Dean J Kereiakes, Ron Waksman, Vinod H Thourani, Robert C Stoler, Gregory J Mishkel, David G Rizik, Vijay S Iyer, Thomas G Gleason, Didier Tchétché, Joshua D Rovin, Maurice Buchbinder, Ian T Meredith, Matthias Götberg, Henrik Bjursten, Christopher Meduri, Michael H Salinger, Dominic J Allocco, Keith D Dawkins
Importance: Transcatheter aortic valve replacement (TAVR) is established for selected patients with severe aortic stenosis. However, limitations such as suboptimal deployment, conduction disturbances, and paravalvular leak occur. Objective: To evaluate if a mechanically expanded valve (MEV) is noninferior to an approved self-expanding valve (SEV) in high-risk patients with aortic stenosis undergoing TAVR. Design, Setting, and Participants: The REPRISE III trial was conducted in 912 patients with high or extreme risk and severe, symptomatic aortic stenosis at 55 centers in North America, Europe, and Australia between September 22, 2014, and December 24, 2015, with final follow-up on March 8, 2017...
January 2, 2018: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/29291529/anatomical-and-functional-changes-in-the-brain-after-simultaneous-interpreting-training-a-longitudinal-study
#14
Eowyn Van de Putte, Wouter De Baene, Lorna García-Pentón, Evy Woumans, Aster Dijkgraaf, Wouter Duyck
In the recent literature on bilingualism, a lively debate has arisen about the long-term effects of bilingualism on cognition and the brain. These studies yield inconsistent results, in part because they rely on comparisons between bilingual and monolingual control groups that may also differ on other variables. In the present neuroimaging study, we adopted a longitudinal design, assessing the long-term anatomical and cognitive effects of an extreme form of bilingualism, namely simultaneous interpreting. We compared a group of students starting interpreting training with a closely matched group of translators, before and after nine months of training...
December 12, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29285657/inter-individual-variations-and-hemispheric-asymmetries-in-structural-connectivity-patterns-of-the-inferior-fronto-occipital-fascicle-a-diffusion-tensor-imaging-tractography-study
#15
François Vassal, Benjamin Pommier, Anna Sontheimer, Jean-Jacques Lemaire
PURPOSE: Precise knowledge of the structural connectivity of white matter fascicles could yield new insights into function and is important for neurosurgical planning. Therefore, we aimed to provide a detailed map of the cortical terminations of the inferior fronto-occipital fascicle (IFOF), with special emphasis on putative inter-individual variations and hemispheric asymmetries. METHODS: Deterministic diffusion tensor imaging-based tractography was used to perform virtual dissection of the IFOF in 20 healthy subjects...
December 28, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29283565/shape-control-of-pt-ru-nanocrystals-tuning-surface-structure-for-enhanced-electrocatalytic-methanol-oxidation
#16
Liang Huang, Xueping Zhang, Qingqing Wang, Yujie Han, Youxing Fang, Shaojun Dong
Despite that both electrochemical experiments and density functional theory calculations have testified the superior electrocatalytic activity and CO-poisoning tolerance of platinum-ruthenium (PtRu) alloy nanoparticles toward the methanol oxidation reaction (MOR), the facet-dependent electrocatalytic properties of PtRu nanoparticles are scarcely revealed because it is extremely difficult to synthesize well-defined facets enclosed PtRu nanocrystals. Herein, we for the first report a general synthesis of ultrathin PtRu nanocrystals with tuneable morphologies (nanowires, nanorods and nanocubes) through a one-step solvothermal approach, and systematically investigate the structure-directing effects of different surfactants and the formation mechanism by control experiments and time-dependent studies...
December 28, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29279997/outcomes-of-surgery-for-hepatocellular-carcinoma-with-tumor-thrombus-in-the-inferior-vena-cava-or-right-atrium
#17
REVIEW
Kazuhiko Sakamoto, Hiroaki Nagano
The prognosis of hepatocellular carcinoma (HCC) patients with tumor thrombus (TT) in the inferior vena cava (IVC) or right atrium (RA) is extremely poor. We reviewed the recent surgical treatments and outcomes of this form of advanced HCC. TT is classified into three types according to its anatomic location relative to the heart: the inferior hepatic type (type I), where the TT is in the IVC below the diaphragm; the superior hepatic type (type II), where the TT is in the IVC above the diaphragm, but still outside the RA; and the intracardiac type (type III), where the TT is above the diaphragm and has entered the RA...
December 26, 2017: Surgery Today
https://www.readbyqxmd.com/read/29279832/the-comparison-of-preventive-analgesic-effects-of-ketamine-paracetamol-and-magnesium-sulfate-on-postoperative-pain-control-in-patients-undergoing-lower-limb-surgery-a-randomized-clinical-trial
#18
Seyed Morteza Heydari, Seyed Jalal Hashemi, Shahpour Pourali
Background: In considering the importance of postoperative pain management and its consequences on its related secondary outcomes including nausea, vomiting, and operation-related complications, we aimed to compare the effectiveness of the three analgesic agents including ketamine, paracetamol, and magnesium sulfate for postoperative pain relief and associated consequences in this trial. Materials and Methods: In this double-blinded randomized control clinical trial, patients scheduled for elective lower extremity orthopedic surgery under general anesthesia were enrolled and randomized into four groups for receiving intravenous ketamine (0...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/29278384/marine-cryptophytes-are-great-sources-of-epa-and-dha
#19
Elina Peltomaa, Matthew D Johnson, Sami J Taipale
Microalgae have the ability to synthetize many compounds, some of which have been recognized as a source of functional ingredients for nutraceuticals with positive health effects. One well-known example is the long-chain polyunsaturated fatty acids (PUFAs), which are essential for human nutrition. Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are the two most important long-chain omega-3 (ω-3) PUFAs involved in human physiology, and both industries are almost exclusively based on microalgae. In addition, algae produce phytosterols that reduce serum cholesterol...
December 26, 2017: Marine Drugs
https://www.readbyqxmd.com/read/29260380/atypical-pt-anatomy-in-children-with-autism-spectrum-disorder-with-expressive-language-deficits
#20
Tracey A Knaus, Jodi Kamps, Anne L Foundas, Helen Tager-Flusberg
Deficits in communication are a core feature of autism spectrum disorder (ASD), however, structural language abilities are highly variable, ranging from minimally verbal to superior linguistic skills. Differences in the anatomy of cortical language regions, including anterior and posterior areas, have been found in ASD. It remains unclear, however, if anatomical differences distinguish individuals with impaired expressive language from those without such deficits. In addition, anatomical differences have not been explored in children with extremely low expressive language...
December 19, 2017: Brain Imaging and Behavior
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