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https://www.readbyqxmd.com/read/28550350/recent-advances-in-the-study-of-immunodeficiency-and-dna-damage-response
#1
REVIEW
Tomohiro Morio
DNA breaks can be induced by exogenous stimuli or by endogenous stress, but are also generated during recombination of V, D, and J genes (V(D)J recombination), immunoglobulin class switch recombination (CSR). Among various DNA breaks generated, DNA double strand break (DSB) is the most deleterious one. DNA damage response (DDR) is initiated when DSBs are detected, leading to DNA break repair by non-homologous end joining (NHEJ). The process is critically important for the generation of diversity for foreign antigens; and failure to exert DNA repair leads to immunodeficiency such as severe combined immunodeficiency and hyper-IgM syndrome...
May 26, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28550308/fortilin-binds-ire1%C3%AE-and-prevents-er-stress-from-signaling-apoptotic-cell-death
#2
Decha Pinkaew, Abhijnan Chattopadhyay, Matthew D King, Preedakorn Chunhacha, Zhihe Liu, Heather L Stevenson, Yanjie Chen, Patuma Sinthujaroen, Owen M McDougal, Ken Fujise
The endoplasmic reticulum, the cytoplasmic organelle that matures a massive amount of nascent secretory polypeptides, is particularly sensitive to stress. Endoplasmic reticulum stress causes unfolded proteins to populate the organelle, eliciting the unfolded protein response. During the unfolded protein response, GRP78-an endoplasmic reticulum master stress regulator-detaches from three endoplasmic reticulum stress sensors (IRE1α, PERK, and ATF6) and allows them to activate the apoptotic signaling pathway...
May 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28550258/effect-of-apoe-genotype-on-amyloid-deposition-brain-volume-and-memory-in-cognitively-normal-older-individuals
#3
Yen Ying Lim, Robert Williamson, Simon M Laws, Victor L Villemagne, Pierrick Bourgeat, Christopher Fowler, Stephanie Rainey-Smith, Olivier Salvado, Ralph N Martins, Christopher C Rowe, Colin L Masters, Paul Maruff
BACKGROUND: The association between the apolipoprotein E (APOE) ɛ4 allele and high risk of developing Alzheimer's disease (AD) dementia before the age of 80 has been recognized for over 30 years. However, the timing and mode of action of APOE is not understood, nor has there been a detailed analysis of the effect of APOE genotype on memory, hippocampal volume, and amyloid-β (Aβ) levels in cognitively normal adults. OBJECTIVE: Examine the effect of APOE allelic genotype on the relationship between Aβ levels, hippocampal volume, and memory in cognitively normal adults...
May 25, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28550218/masters-courses-recognised-for-their-role-in-improving-animal-welfare-worldwide
#4
(no author information available yet)
No abstract text is available yet for this article.
May 27, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28550121/bcl6-represses-antiviral-resistance-in-follicular-t-helper-cells
#5
Tohti Amet, Young Min Son, Li Jiang, In Su Cheon, Su Huang, Samir K Gupta, Alexander L Dent, Luis J Montaner, Qigui Yu, Jie Sun
Follicular Th (Tfh) cells are a distinct subset of Th cells that help B cells produce class-switched antibodies. Studies have demonstrated that Tfh cells are highly prone to HIV infection and replication. However, the molecular mechanisms underlying this phenomenon are largely unclear. Here, we show that murine and human Tfh cells have diminished constitutive expression of IFN-stimulated genes (ISGs) inclusive of antiviral resistance factor MX dynamin-like GTPase 2 (MX2) and IFN-induced transmembrane 3 (IFITM3) compared with non-Tfh cells...
May 26, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28550120/hiv-1-decreases-nrf2-are-activity-and-phagocytic-function-in-alveolar-macrophages
#6
Bashar S Staitieh, Lingmei Ding, Wendy A Neveu, Paul Spearman, David M Guidot, Xian Fan
Respiratory complications occur frequently in individuals living with human immunodeficiency-1 virus (HIV) infection, and there is evidence that HIV-related oxidative stress impairs alveolar macrophage immune function. We hypothesized that nuclear factor (erythroid-derived 2)-like 2 (Nrf2), a master transcription factor that activates the antioxidant response element (ARE) and regulates antioxidant defenses, has an important role in alveolar macrophage (AMs) immune dysfunction in individuals with HIV infections...
May 26, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28549743/intensive-care-nursing-students-perceptions-of-simulation-for-learning-confirming-communication-skills-a-descriptive-qualitative-study
#7
Marte-Marie Wallander Karlsen, Anita Kristin Gabrielsen, Anne Lise Falch, Dag-Gunnar Stubberud
AIM: The aim of this study was to explore intensive care nursing students experiences with confirming communication skills training in a simulation-based environment. RESEARCH METHODOLOGY: The study has a qualitative, exploratory and descriptive design. The participants were students in a post-graduate program in intensive care nursing, that had attended a one day confirming communication course. Three focus group interviews lasting between 60 and 80min were conducted with 14 participants...
May 23, 2017: Intensive & Critical Care Nursing: the Official Journal of the British Association of Critical Care Nurses
https://www.readbyqxmd.com/read/28548889/therapy-of-advanced-non-small-cell-lung-cancer-with-an-sn-38-anti-trop-2-drug-conjugate-sacituzumab-govitecan
#8
Rebecca Suk Heist, Michael J Guarino, Gregory Masters, W Thomas Purcell, Alexander N Starodub, Leora Horn, Ronald J Scheff, Aditya Bardia, Wells A Messersmith, Jordan Berlin, Allyson J Ocean, Serengulam V Govindan, Pius Maliakal, Boyd Mudenda, William A Wegener, Robert M Sharkey, David M Goldenberg, D Ross Camidge
Purpose Trop-2, expressed in most solid cancers, may be a target for antibody-drug conjugates (ADCs) in non-small-cell lung cancer (NSCLC). We studied sacituzumab govitecan (IMMU-132), a Trop-2 ADC, for the targeting of SN-38. Patients and Methods We evaluated IMMU-132 in a single-arm multicenter trial in patients with pretreated metastatic NSCLC who received either 8 or 10 mg/kg on days 1 and 8 of 21-day cycles. The primary end points were safety and objective response rate (ORR). Progression-free survival and overall survival were secondary end points...
May 26, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28548603/beyond-demarcation-care-ethics-as-an-interdisciplinary-field-of-inquiry
#9
Carlo Leget, Inge van Nistelrooij, Merel Visse
BACKGROUND: For many years the body of literature known as 'care ethics' or 'ethics of care' has been discussed as regards its status and nature. There is much confusion and little structured discussion. The paper of Klaver et al. (2014) was written as a discussion article to which we respond. OBJECTIVES: We aim to contribute to the ongoing discussion about the status and nature of care ethics. RESEARCH DESIGN: Responding to 'Demarcation of the ethics of care as a discipline' by Klaver et al...
January 1, 2017: Nursing Ethics
https://www.readbyqxmd.com/read/28547658/time-of-day-dependent-expression-of-purinergic-receptors-in-mouse-suprachiasmatic-nucleus
#10
Julian Lommen, Anna Stahr, Marc Ingenwerth, Amira A H Ali, Charlotte von Gall
Purinergic P2X and P2Y receptors are involved in mediating intercellular signalling via purines such as adenosine triphosphate (ATP). P2X and P2Y receptors have been implicated in numerous body functions including learning, memory and sleep. All of these body functions show time-of-day-dependent variations controlled by the master circadian oscillator located in the suprachiasmatic nucleus (SCN). Evidence exists for a role of purinergic signalling in intercellular coupling within SCN. However, few studies have been performed on the expression of purinergic receptors in SCN...
May 26, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28546429/structural-studies-unravel-the-active-conformation-of-apo-ror%C3%AE-t-nuclear-receptor-and-a-common-inverse-agonism-of-two-diverse-classes-of-ror%C3%AE-t-inhibitors
#11
Xiang Li, Marie Anderson, Delphine Collin, Ingo Muegge, John Wan, Debra Brennan, Stanley Kugler, Donna Terenzio, Charles Kennedy, Siqi Lin, Mark E Labadia, Brian Cook, Robert Hughes, Neil A Farrow
The nuclear receptor retinoid acid-related orphan receptor γt (RORγt) is a master regulator of the Th17/IL-17 pathway that plays crucial roles in the pathogenesis of autoimmunity. RORγt has recently emerged as a highly promising target for treatment of a number of autoimmune diseases. Through high-throughput screening we previously identified several classes of inverse agonists for RORγt. Here, we report the crystal structures for the ligand binding domain of RORγt in both apo and ligand-bound states. We show that apo RORγt adopts an active conformation capable of recruiting coactivator peptides and present a detailed analysis of the structural determinants that stabilize helix 12 (H12) of RORγt in the active state in the absence of a ligand...
May 25, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28545613/self-efficacy-in-prosthetics-orthotics-students-who-did-and-did-not-participate-in-short-term-study-abroad-programs-preliminary-results
#12
Goeran Fiedler, Uta Kremer
It is conventional knowledge that travel is educational and that a study stay in a foreign country contributes to a student's personality formation and well-roundedness. The benefit of such experiences on attitudes that shape professional aptitude and career success may, however, be debated. It could be argued that exposure to experiences that are irrelevant to a student's chosen profession may have no sizeable impact - thus not justifying the invested time and money - or, in an extreme case, may even be detrimental to career success if the wrong conclusions are drawn...
April 2017: Zeitschrift Für Evidenz, Fortbildung und Qualität Im Gesundheitswesen
https://www.readbyqxmd.com/read/28545608/differential-regulation-analysis-reveals-dysfunctional-regulatory-mechanism-involving-transcription-factors-and-micrornas-in-gastric-carcinogenesis
#13
Quanxue Li, Junyi Li, Wentao Dai, Yi-Xue Li, Yuan-Yuan Li
Gastric cancer (GC) is one of the most incident malignancies in the world. Although lots of featured genes and microRNAs (miRNAs) have been identified to be associated with gastric carcinogenesis, underlying regulatory mechanisms still remain unclear. In order to explore the dysfunctional mechanisms of GC, we developed a novel approach to identify carcinogenesis relevant regulatory relationships, which is characterized by quantifying the difference of regulatory relationships between stages. Firstly, we applied the strategy of differential coexpression analysis (DCEA) to transcriptomic datasets including paired mRNA and miRNA of gastric samples to identify a set of genes/miRNAs related to gastric cancer progression...
March 2017: Artificial Intelligence in Medicine
https://www.readbyqxmd.com/read/28543554/smad3-expression-and-regulation-of-fibroplasia-in-vocal-fold-injury
#14
Nao Hiwatashi, Peter A Benedict, Gregory R Dion, Renjie Bing, Iv Kraja, Milan R Amin, Ryan C Branski
OBJECTIVE: Recent reports highlight the efficacy of small interfering RNA (siRNA) targeting SMAD3 to regulate transforming growth factor β (TGF-β)-mediated fibroplasia in vocal fold fibroblasts. The current study sought to investigate SMAD3 expression during wound healing in vivo and quantify the downstream transcriptional events associated with SMAD3 knockdown in vitro. STUDY DESIGN: In vivo and in vitro. METHODS: Unilateral vocal fold injury was created in a rabbit model...
May 20, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28542607/sirt1-is-a-positive-regulator-of-the-master-osteoblast-transcription-factor-runx2
#15
Kayvan Zainabadi, Cassie J Liu, Leonard Guarente
Activation of SIRT1 has previously been shown to protect mice against osteoporosis through yet ill-defined mechanisms. In this study, we outline a role for SIRT1 as a positive regulator of the master osteoblast transcription factor, RUNX2. We find that ex vivo deletion of sirt1 leads to decreased expression of runx2 downstream targets, but not runx2 itself, along with reduced osteoblast differentiation. Reciprocally, treatment with a SIRT1 agonist promotes osteoblast differentiation, as well as the expression of runx2 downstream targets, in a SIRT1-dependent manner...
2017: PloS One
https://www.readbyqxmd.com/read/28541468/a-fast-and-exhaustive-method-for-heterogeneity-and-epistasis-analysis-based-on-multi-objective-optimization
#16
Xiong Li
Motivation: The existing epistasis analysis approaches have been criticized mainly for their: 1) ignoring heterogeneity during epistasis analysis; 2) high computational costs; and 3) volatility of performances and results. Therefore, they will not perform well in general, leading to lack of reproducibility and low power in complex disease association studies. Method: In this work, a fast scheme is proposed to accelerate exhaustive searching based on multi-objective optimization named ESMO for concurrently analyzing heterogeneity and epistasis phenomena...
May 24, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28541043/theoretical-and-experimental-investigation-of-the-reaction-no-oh-o2-%C3%A2-ho2-no2
#17
Christa Fittschen, Emmanuel Assaf, Luc Vereecken
The possible formation of HO2 and NO2 as products from the reaction of OH and NO under atmospheric conditions, in competition to the formation of HONO, has been investigated experimentally and theoretically. Experiments have been carried out by directly measuring the formation of HO2 radicals using laser photolysis coupled to cw-CRDS. OH radicals have been generated from the reaction of F-atoms with H2O, and absolute HO2 and OH profiles have been recorded at different NO concentrations. The potential energy surface has been calculated and the rate constant has been obtained from RRKM master equation modeling...
May 25, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28540675/viral-micrornas-host-micrornas-regulating-viruses-and-bacterial-microrna-like-rnas
#18
Sara-Elizabeth Cardin, Glen M Borchert
As masters of genome-wide regulation, miRNAs represent a key component in the complex architecture of cellular processes. Over the last decade, it has become increasingly apparent that miRNAs have many important roles in the development of disease and cancer. Recently, however, their role in viral and bacterial gene regulation as well as host gene regulation during disease progression has become a field of interest. Due to their small size, miRNAs are the ideal mechanism for bacteria and viruses that have limited room in their genomes, as a single miRNA can target up to ~30 genes...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28540477/-personalization-in-the-medicine-of-the-future-opportunities-and-risks
#19
REVIEW
N P Malek
Personalized medicine is not a new concept. The renaissance of the term is due to the enormous progress in gene sequencing technology and functional imaging, as well as the development of targeted therapies. Application of these technologies in clinical medicine will necessitate infrastructural as well as organizational and educational changes in the healthcare system. An important change required already in the short-term is the introduction of centralized structures, preferably in university clinics, which adopt these innovations and incorporate them into clinical care...
May 24, 2017: Der Internist
https://www.readbyqxmd.com/read/28540350/meta-analysis-data-for-104-energy-economy-nexus-papers
#20
Vladimír Hajko, Agáta Kociánová, Martina Buličková
The data presented here are manually encoded characteristics of research papers in the area of Energy-Economy Nexus (empirical investigation of Granger causality between energy consumption and economic growth) that describe the methods, samples, and other details related to the individual estimations done in the examined empirical papers. Data cover papers indexed by Scopus, published in economic journals, written in English, after year 2000. In addition, papers were manually filtered to only those that deal with Energy-Economy Nexus investigation and have at least 10 citations at (at the time of query - November 2015)...
June 2017: Data in Brief
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