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https://www.readbyqxmd.com/read/29444207/the-functional-network-signature-of-heterogeneity-in-freezing-of-gait
#1
Kaylena A Ehgoetz Martens, Julie M Hall, Matthew J Georgiades, Moran Gilat, Courtney C Walton, Elie Matar, Simon J G Lewis, James M Shine
Freezing of gait is a complex, heterogeneous, and highly variable phenomenon whose pathophysiology and neural signature remains enigmatic. Evidence suggests that freezing is associated with impairments across cognitive, motor and affective domains; however, most research to date has focused on investigating one axis of freezing of gait in isolation. This has led to inconsistent findings and a range of different pathophysiological models of freezing of gait, due in large part to the tendency for studies to investigate freezing of gait as a homogeneous entity...
February 9, 2018: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29442453/transcriptomic-analysis-of-the-pi3k-akt-signaling-pathway-reveals-the-dual-role-of-the-c-jun-oncogene-in-cytotoxicity-and-the-development-of-resistance-in-hl-60-leukemia-cells-in-response-to-arsenic-trioxide
#2
Joanna Roszak, Anna Smok-Pieniążek, Maciej Stępnik
BACKGROUND: Arsenic trioxide (ATO) is a well-recognized antileukemic drug used for the treatment of newly diagnosed and relapsed acute promyelocytic leukemia (APL). A major drawback of therapy with ATO is the development of APL cell resistance, the mechanisms of which are still not clear. OBJECTIVES: The aim of this study was to investigate the role of the PI3K/Akt signaling pathway in ATOtreated human acute myeloid leukemia (HL-60) cells and in ATO-resistant clones...
December 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29440775/genetic-defects-in-mtdna-encoded-protein-translation-cause-pediatric-mitochondrial-cardiomyopathy-with-early-onset-brain-disease
#3
Rick Kamps, Radek Szklarczyk, Tom E Theunissen, Debby M E I Hellebrekers, Suzanne C E H Sallevelt, Iris B Boesten, Bart de Koning, Bianca J van den Bosch, Gajja S Salomons, Marisa Simas-Mendes, Rob Verdijk, Kees Schoonderwoerd, Irenaeus F M de Coo, Jo M Vanoevelen, Hubert J M Smeets
This study aims to identify gene defects in pediatric cardiomyopathy and early-onset brain disease with oxidative phosphorylation (OXPHOS) deficiencies. We applied whole-exome sequencing in three patients with pediatric cardiomyopathy and early-onset brain disease with OXPHOS deficiencies. The brain pathology was studied by MRI analysis. In consanguineous patient 1, we identified a homozygous intronic variant (c.850-3A > G) in the QRSL1 gene, which was predicted to cause abnormal splicing. The variant segregated with the disease and affected the protein function, which was confirmed by complementation studies, restoring OXPHOS function only with wild-type QRSL1...
February 13, 2018: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/29440697/ectopic-expression-of-s28a-mutated-histone-h3-modulates-longevity-stress-resistance-and-cardiac-function-in-drosophila
#4
J P Joos, A R Saadatmand, C Schnabel, I Viktorinová, T Brand, M Kramer, S Nattel, D Dobrev, P Tomancak, J Backs, P Kleinbongard, G Heusch, K Lorenz, E Koch, S Weber, A El-Armouche
Histone H3 serine 28 (H3S28) phosphorylation and de-repression of polycomb repressive complex (PRC)-mediated gene regulation is linked to stress conditions in mitotic and post-mitotic cells. To better understand the role of H3S28 phosphorylation in vivo, we studied a Drosophila strain with ectopic expression of constitutively-activated H3S28A, which prevents PRC2 binding at H3S28, thus mimicking H3S28 phosphorylation. H3S28A mutants showed prolonged life span and improved resistance against starvation and paraquat-induced oxidative stress...
February 13, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29440680/an-allogeneic-off-the-shelf-therapeutic-strategy-for-peripheral-nerve-tissue-engineering-using-clinical-grade-human-neural-stem-cells
#5
C O'Rourke, A G E Day, C Murray-Dunning, L Thanabalasundaram, J Cowan, L Stevanato, N Grace, G Cameron, R A L Drake, J Sinden, J B Phillips
Artificial tissues constructed from therapeutic cells offer a promising approach for improving the treatment of severe peripheral nerve injuries. In this study the effectiveness of using CTX0E03, a conditionally immortalised human neural stem cell line, as a source of allogeneic cells for constructing living artificial nerve repair tissue was tested. CTX0E03 cells were differentiated then combined with collagen to form engineered neural tissue (EngNT-CTX), stable aligned sheets of cellular hydrogel. EngNT-CTX sheets were delivered within collagen tubes to repair a 12 mm sciatic nerve injury model in athymic nude rats...
February 13, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29440116/improving-interpretation-of-cardiac-phenotypes-and-enhancing-discovery-with-expanded-knowledge-in-the-gene-ontology
#6
Ruth C Lovering, Paola Roncaglia, Douglas G Howe, Stanley J F Laulederkind, Varsha K Khodiyar, Tanya Z Berardini, Susan Tweedie, Rebecca E Foulger, David Osumi-Sutherland, Nancy H Campbell, Rachael P Huntley, Philippa J Talmud, Judith A Blake, Ross Breckenridge, Paul R Riley, Pier D Lambiase, Perry M Elliott, Lucie Clapp, Andrew Tinker, David P Hill
BACKGROUND: A systems biology approach to cardiac physiology requires a comprehensive representation of how coordinated processes operate in the heart, as well as the ability to interpret relevant transcriptomic and proteomic experiments. The Gene Ontology (GO) Consortium provides structured, controlled vocabularies of biological terms that can be used to summarize and analyze functional knowledge for gene products. METHODS AND RESULTS: In this study, we created a computational resource to facilitate genetic studies of cardiac physiology by integrating literature curation with attention to an improved and expanded ontological representation of heart processes in the Gene Ontology...
February 2018: Circ Genom Precis Med
https://www.readbyqxmd.com/read/29439832/factors-associated-with-positive-margins-in-women-undergoing-breast-conservation-surgery
#7
Brittany L Murphy, Judy C Boughey, Michael G Keeney, Amy E Glasgow, Jennifer M Racz, Gary L Keeney, Elizabeth B Habermann
OBJECTIVE: To identify factors predicting positive margins at lumpectomy prompting intraoperative reexcision in patients with breast cancer treated at a large referral center. PATIENTS AND METHODS: We reviewed all breast cancer lumpectomy cases managed at our institution from January 1, 2012, through December 31, 2013. Associations between rates of positive margin and patient and tumor factors were assessed using χ 2 tests and univariate and adjusted multivariate logistic regression, stratified by ductal carcinoma in situ (DCIS) or invasive cancer...
February 10, 2018: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/29438463/efficacy-and-safety-findings-from-dream-a-phase-iii-study-of-dhp107-oral-paclitaxel-versus-iv-paclitaxel-in-patients-with-advanced-gastric-cancer-after-failure-of-first-line-chemotherapy
#8
Y-K Kang, M-H Ryu, S H Park, J G Kim, J W Kim, S-H Cho, Y-L Park, S R Park, S Y Rha, M J Kang, J Y Cho, S Y Kang, S Y Roh, B-Y Ryoo, B-H Nam, Y-W Jo, K-E Yoon, S C Oh
Background: Paclitaxel is currently only available as an intravenous (IV) formulation. DHP107 is a novel oral formulation of lipid ingredients and paclitaxel. DHP107 demonstrated comparable efficacy, safety, and pharmacokinetics to IV paclitaxel as second-line therapy in patients with advanced gastric cancer (AGC). DREAM is a multicenter, open-label, prospective, randomized phase III study of patients with histologically/cytologically confirmed, unresectable/recurrent AGC after first-line therapy failure...
February 9, 2018: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29438226/racial-differences-in-presentations-and-predictors-of-acute-pain-following-motor-vehicle-collision
#9
Francesca L Beaudoin, Roee Gutman, Wanting Zhai, Roland C Merchant, Melissa A Clark, Kenneth A Bollen, Phyllis Hendry, Michael C Kurz, Christopher Lewandowski, Claire Pearson, Brian O'Neil, Elizabeth Datner, Patricia Mitchell, Robert Domeier, Samuel A McLean
African-Americans experience a greater burden of acute pain than non-Hispanic white individuals across of variety of acute medical conditions, but it is unknown if this is the case following trauma. We evaluated pain, pain-related characteristics (e.g. peri-traumatic distress), and analgesic treatment in two cohorts of individuals (African-American (n=931) and non-Hispanic white (n=948)) presenting to the emergency department after a motor-vehicle crash (MVC). We performed a propensity-matched analysis (n=796 in each group) to assess racial differences in acute pain in the ED...
February 9, 2018: Pain
https://www.readbyqxmd.com/read/29437767/t-cell-exhaustion-signatures-vary-with-tumor-type-and-are-severe-in-glioblastoma
#10
Karolina Woroniecka, Pakawat Chongsathidkiet, Kristen E Rhodin, Hanna R Kemeny, Cosette A Dechant, Samuel H Farber, Aladine A Elsamadicy, Xiuyu Cui, Shohei Koyama, Christina C Jackson, Landon J Hansen, Tanner M Johanns, Luis Sanchez-Perez, Vidyalakshmi Chandramohan, Yen-Rei A Yu, Darell D Bigner, Amber J Giles, Patrick Healy, Glenn Dranoff, Kent J Weinhold, Gavin P Dunn, Peter E Fecci
PURPOSE: T cell dysfunction is a hallmark of GBM. While anergy and tolerance have been well characterized, T cell exhaustion remains relatively unexplored. Exhaustion, characterized in part by the upregulation of multiple immune checkpoints, is a known contributor to failures amidst immune checkpoint blockade, a strategy that has lacked success thus far in GBM. This study is among the first to examine, and credential as bona fide, exhaustion among T cells infiltrating human and murine GBM...
February 7, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29436077/recombinant-factor-viii-fc-fusion-protein-for-immune-tolerance-induction-in-patients-with-severe-haemophilia-a-with%C3%A2-inhibitors-a-retrospective-analysis
#11
M Carcao, A Shapiro, J M Staber, N Hwang, C Druzgal, K Lieuw, M Belletrutti, C D Thornburg, S P Ahuja, J Morales-Arias, J Dumont, G Miyasato, E Tsao, N Jain, S W Pipe
INTRODUCTION: Immune tolerance induction (ITI) is the gold standard for eradication of factor VIII inhibitors in severe haemophilia A; however, it usually requires treatment for extended periods with associated high burden on patients and healthcare resources. AIM: Review outcomes of ITI with recombinant factor VIII Fc fusion protein (rFVIIIFc) in patients with severe haemophilia A and high-titre inhibitors. METHODS: Multicentre retrospective chart review of severe haemophilia A patients treated with rFVIIIFc for ITI...
February 13, 2018: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/29435907/sustained-virological-response-in-special-populations-with-chronic-hepatitis-c-using-interferon-free-treatments-a-systematic-review-and-meta-analysis-of-observational-cohort-studies
#12
REVIEW
Vinicius Lins Ferreira, Letícia Paula Leonart, Fernanda Stumpf Tonin, Helena Hiemisch Lobo Borba, Roberto Pontarolo
BACKGROUND AND OBJECTIVES: Hepatitis C treatment has changed considerably in recent years, and many interferon (IFN)-free therapies are now available. Considering the high rates of sustained virological response (SVR) presented by clinical trials for these treatments, high rates of effectiveness are also expected in real-world clinical practice. Hence, this study aimed to conduct a systematic review and meta-analysis of observational cohort studies to evaluate the clinical effectiveness and safety of IFN-free therapies for hepatitis C...
February 12, 2018: Clinical Drug Investigation
https://www.readbyqxmd.com/read/29435745/a-step-towards-stereotactic-navigation-during-pelvic-surgery-3d-nerve-topography
#13
A R Wijsmuller, C Giraudeau, J Leroy, G J Kleinrensink, E Rociu, L G Romagnolo, A G F Melani, V Agnus, M Diana, L Soler, B Dallemagne, J Marescaux, D Mutter
BACKGROUND: Long-term morbidity after multimodal treatment for rectal cancer is suggested to be mainly made up by nerve-injury-related dysfunctions. Stereotactic navigation for rectal surgery was shown to be feasible and will be facilitated by highlighting structures at risk of iatrogenic damage. The aim of this study was to investigate the ability to make a 3D map of the pelvic nerves with magnetic resonance imaging (MRI). METHODS: A systematic review was performed to identify a main positional reference for each pelvic nerve and plexus...
February 12, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29435548/coordination-numbers-for-unraveling-intrinsic-size-effects-in-gold-catalyzed-co-oxidation
#14
Siwen Wang, Noushin Omidvar, Emily Marx, Hongliang Xin
Geometry-based reactivity descriptors, e.g., regular, generalized, and orbitalwise coordination numbers, were used for unraveling intrinsic size effects of Au nanocatalysts towards CO oxidation. For an ensemble of Au nanoparticles with varying sizes and shapes, s-orbital coordination numbers (CNs) linearly correlate with *CO and *O adsorption energies at the on-top and hollow sites, respectively, outperforming their regular (CN) and generalized (C[combining macron]N[combining macron]) counterparts attributed to an explicit consideration of interatomic interactions...
February 13, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29435411/ellagitannin-het-obtained-from-strawberry-leaves-is-oxidized-by-bacterial-membranes-and-inhibits-the-respiratory-chain
#15
Gustavo G Martos, Alicia Mamani, María P Filippone, Pedro O Abate, Néstor E Katz, Atilio P Castagnaro, Juan C Díaz Ricci
Plant secondary metabolism produces a variety of tannins that have a wide range of biological activities, including activation of plant defenses and antimicrobial, anti-inflammatory and antitumoral effects. The ellagitannin HeT (1- O -galloyl-2,3;4,6-bis-hexahydroxydiphenoyl-β-d-glucopyranose) from strawberry leaves elicits a strong plant defense response, and exhibits antimicrobial activity associated to the inhibition of the oxygen consumption, but its mechanism of action is unknown. In this paper we investigate the influence of HeT on bacterial cell membrane integrity and its effect on respiration...
February 2018: FEBS Open Bio
https://www.readbyqxmd.com/read/29434797/effect-of-different-surface-treatments-and-retainer-designs-on-the-retention-of-posterior-pd-ag-porcelain-fused-to-metal-resin-bonded-fixed-partial-dentures
#16
Xiwen Chen, Yixin Zhang, Jinru Zhou, Chenfeng Chen, Zhimin Zhu, Lei Li
The aim of this study was to investigate the adhesive property of palladium-silver alloy (Pd-Ag) and the simulated clinical performance of Pd-Ag porcelain-fused-to-metal (PFM), resin-bonded, fixed partial dentures (RBFPDs). A total of 40 Pd-Ag discs (diameter=5 mm) were prepared and divided into the following four groups (n=10): a) No sandblasting, used as a control; and b, 50 µm; c, 110 µm; and d, 250 µm aluminum oxide (Al2O3) particles, respectively. Another 50 discs were pre-sandblasted and divided into five groups (n=10) subjected to different treatments: e) Sandblasting, used as a control; f) silane; g) alloy primer; h) silica coating + silane and i) silica coating + alloy primer...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29434599/rna-seq-analysis-of-il-1b-and-il-36-responses-in-epidermal-keratinocytes-identifies-a-shared-myd88-dependent-gene-signature
#17
William R Swindell, Maria A Beamer, Mrinal K Sarkar, Shannon Loftus, Joseph Fullmer, Xianying Xing, Nicole L Ward, Lam C Tsoi, Michelle J Kahlenberg, Yun Liang, Johann E Gudjonsson
IL-36 cytokines have recently emerged as mediators of inflammation in autoimmune conditions including psoriasis vulgaris (PsV) and generalized pustular psoriasis (GPP). This study used RNA-seq to profile the transcriptome of primary epidermal keratinocytes (KCs) treated with IL-1B, IL-36A, IL-36B, or IL-36G. We identified some early IL-1B-specific responses (8 h posttreatment), but nearly all late IL-1B responses were replicated by IL-36 cytokines (24 h posttreatment). Type I and II interferon genes exhibited time-dependent response patterns, with early induction (8 h) followed by no response or repression (24 h)...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29433257/incorporation-of-bentonite-clay-in-cassava-starch-films-for-the-reduction-of-water-vapor-permeability
#18
M K S Monteiro, V R L Oliveira, F K G Santos, E L Barros Neto, R H L Leite, E M M Aroucha, R R Silva, K N O Silva
Complete factorial planning 23 was applied to identify the influence of the cassava starch(A), glycerol(B) and modified clay(C) content on the water vapor permeability(WVP) of the cassava starch films with the addition of bentonite clay as a filler, its surface was modified by ion exchange from cetyltrimethyl ammonium bromide. The films were characterized by X-ray diffraction(XRD), fourier transform by infrared radiation(FTIR), atomic force microscopy(AFM) and scanning electron microscopy(SEM). The factorial analysis suggested a mathematical model thats predicting the optimal condition of the minimization of WVP...
March 2018: Food Research International
https://www.readbyqxmd.com/read/29432895/a-cross-omics-approach-to-investigate-temporal-gene-expression-regulation-by-5-hydroxymethylcytosine-via-tbh-derived-oxidative-stress-showed-involvement-of-different-regulatory-kinases
#19
Jacob J Briedé, Lize Deferme, Jarno E J Wolters, Sandra M H Claessen, Twan van den Beucken, J Richard Wagner, Simone G van Breda, Jos C S Kleinjans
Regulation of DNA methylation plays a crucial role in biological processes and carcinogenesis. The formation of 5-hydroxymethylcytosine (5hmC) by oxidation of 5-methylcytosine (5mC) has been proposed as an intermediate of active demethylation. However, whether and how active demethylation is regulated by oxidative stress-related processes is not well understood. Here we investigated whether free oxygen radicals are capable of directly forming 5hmC and how this enhanced whole genome gene expression. We applied LC-MS/MS technology for the analysis of 5mC, 5hmC, 5-formylcytosine (5fC) and 5-hydroxymethyluracyl (5hmU) in HepG2 cells exposed to hydroxyl- and methyl radicals, formed by tert-butyl hydroperoxide (TBH) at multiple time points...
February 9, 2018: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/29432615/glioma-through-the-looking-glass-molecular-evolution-of-diffuse-gliomas-and-the-glioma-longitudinal-analysis-consortium
#20
Kenneth Aldape, Samirkumar B Amin, David M Ashley, Jill S Barnholtz-Sloan, Amanda J Bates, Rameen Beroukhim, Christoph Bock, Daniel J Brat, Elizabeth B Claus, Joseph F Costello, John F de Groot, Gaetano Finocchiaro, Pim J French, Hui K Gan, Brent Griffith, Christel C Herold-Mende, Craig Horbinski, Antonio Iavarone, Steven N Kalkanis, Konstantina Karabatsou, Hoon Kim, Mathilde C M Kouwenhoven, Kerrie L McDonald, Hrvoje Miletic, Do-Hyun Nam, Ho Keung Ng, Simone P Niclou, Houtan Noushmehr, Ryan Ormond, Laila M Poisson, Guido Reifenberger, Federico Roncaroli, Jason K Sa, Peter A E Sillevis Smitt, Marion Smits, Camila F Souza, Ghazaleh Tabatabai, Erwin G Van Meir, Roel G W Verhaak, Colin Watts, Pieter Wesseling, Adelheid Woehrer, W K Alfred Yung, Christine Jungk, Ann-Christin Hau, Eric van Dyck, Bart A Westerman, Julia Yin, Olajide Abiola, Nikolaj Zeps, Sean Grimmond, Michael Buckland, Mustafa Khasraw, Erik P Sulman, Andrea M Muscat, Lucy Stead
Adult diffuse gliomas are a diverse group of brain neoplasms that inflict a high emotional toll on patients and their families. The Cancer Genome Atlas (TCGA) and similar projects have provided a comprehensive understanding of the somatic alterations and molecular subtypes of glioma at diagnosis. However, gliomas undergo significant cellular and molecular evolution during disease progression. We review the current knowledge on the genomic and epigenetic abnormalities in primary tumors and after disease recurrence, highlight the gaps in the literature, and elaborate on the need for a new multi-institutional effort to bridge these knowledge gaps and how the Glioma Longitudinal AnalySiS Consortium (GLASS) aims to systemically catalog the longitudinal changes in gliomas...
February 8, 2018: Neuro-oncology
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