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https://www.readbyqxmd.com/read/29792468/teamwork-and-collaboration-in-long-duration-space-missions-going-to-extremes
#1
Lauren Blackwell Landon, Kelley J Slack, Jamie D Barrett
The scientific study of teamwork in the context of spaceflight has uncovered a considerable amount of knowledge over the past 20 years. Although much is known about the underlying factors and processes of teamwork, much is left to be discovered for teams who will be operating in extreme isolation and confinement during a future Mars mission. Special considerations must be made to enhance teamwork and team well-being for multi-year missions during which the small team will live and work together. We discuss the unique challenges of effective teamwork in a Mars mission scenario, and the difficulties of studying teamwork using analogs of the space environment...
May 2018: American Psychologist
https://www.readbyqxmd.com/read/29792022/bidirectional-synthesis-of-di-t-butyl-2s-6s-8s-and-2r-6r-8r-1-7-diazaspiro-5-5-undecane-2-8-dicarboxylate-and-related-spirodiamines
#2
Josh Almond-Thynne, Jiaxu Han, Andrew J P White, Anastasios Polyzos, Philip James Parsons, Anthony G M Barrett
Efficient syntheses of both enantiomers of a spirodiamine diester from (L)- and (D)-aspartic acid are described. The key transformation was the conversion of Boc-protected t-butyl aspartate into the derived aldehyde, two directional Horner Emmons olefination, hydrogenation and selective acid-catalyzed Boc-deprotection and spirocyclization. An alternative, two-directional approaches to derivatives of 1,7-diazaspiro[5.5]undecane is described.
May 23, 2018: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29791859/combining-ngn2-programming-with-developmental-patterning-generates-human-excitatory-neurons-with-nmdar-mediated-synaptic-transmission
#3
Ralda Nehme, Emanuela Zuccaro, Sulagna Dia Ghosh, Chenchen Li, John L Sherwood, Olli Pietilainen, Lindy E Barrett, Francesco Limone, Kathleen A Worringer, Sravya Kommineni, Ying Zang, Davide Cacchiarelli, Alex Meissner, Rolf Adolfsson, Stephen Haggarty, Jon Madison, Matthias Muller, Paola Arlotta, Zhanyan Fu, Guoping Feng, Kevin Eggan
Transcription factor programming of pluripotent stem cells (PSCs) has emerged as an approach to generate human neurons for disease modeling. However, programming schemes produce a variety of cell types, and those neurons that are made often retain an immature phenotype, which limits their utility in modeling neuronal processes, including synaptic transmission. We report that combining NGN2 programming with SMAD and WNT inhibition generates human patterned induced neurons (hpiNs). Single-cell analyses showed that hpiN cultures contained cells along a developmental continuum, ranging from poorly differentiated neuronal progenitors to well-differentiated, excitatory glutamatergic neurons...
May 22, 2018: Cell Reports
https://www.readbyqxmd.com/read/29791133/design-construction-and-validation-of-histone-binding-effectors-in-vitro-and-in-cells
#4
Stefan J Tekel, Cassandra M Barrett, Daniel A Vargas, Karmella A Haynes
Chromatin is a system of nuclear proteins and nucleic acids that plays a pivotal role in gene expression and cell behavior, and is therefore the subject of intense study for cell development and cancer research. Biochemistry, crystallography, and reverse genetics have elucidated the macromolecular interactions that drive chromatin regulation. One of the central mechanisms is the recognition of post translational modifications (PTMs) on histone proteins by a family of nuclear proteins known as "readers...
May 23, 2018: Biochemistry
https://www.readbyqxmd.com/read/29790358/-esophagogastric-junction-and-its-tumours-comments-to-definition-and-classification
#5
Petr Lochman, Tomáš Dušek, Jiří Páral
In spite of the worldwide decreasing incidence of gastric cancer the number of esophagogastric junction and proximal third of stomach carcinomas has been gradually growing up. The reason of that is an increasing incidence of reflux esophagitis with Barrett´s metaplasia and a successful eradication of Helicobacter pylori infection. The aim of this work is to provide various views on definition of the esophagogastric junction and to give an overview of tumours classification schemes being used.
2018: Casopís Lékar̆ů C̆eských
https://www.readbyqxmd.com/read/29789023/iron-supplementation-has-minor-effects-on-gut-microbiota-composition-in-overweight-and-obese-women-in-early-pregnancy
#6
Marloes Dekker Nitert, Luisa F Gomez-Arango, Helen L Barrett, H David McIntyre, Gregory J Anderson, David M Frazer, Leonie K Callaway
Fe is an essential nutrient for many bacteria, and Fe supplementation has been reported to affect the composition of the gut microbiota in both Fe-deficient and Fe-replete individuals outside pregnancy. This study examined whether the dose of Fe in pregnancy multivitamin supplements affects the overall composition of the gut microbiota in overweight and obese pregnant women in early pregnancy. Women participating in the SPRING study with a faecal sample obtained at 16 weeks' gestation were included in this substudy...
May 23, 2018: British Journal of Nutrition
https://www.readbyqxmd.com/read/29788842/veno-arterio-venous-ecmo-for-septic-cardiomyopathy-a-single-centre-experience
#7
Dominik J Vogel, Josie Murray, Adam Z Czapran, Luigi Camporota, Nicholas Ioannou, Chris I S Meadows, Peter B Sherren, Kathleen Daly, Nigel Gooby, Nicholas Barrett
INTRODUCTION: The role of extracorporeal support for patients with septic shock remains unclear. METHODS: We conducted a retrospective analysis of our single-centre experience with veno-arterio-venous extracorporeal membrane oxygenation (VAV ECMO) in adult patients with severe respiratory failure and septic cardiomyopathy. Clinical data was extracted from electronic medical records including a dedicated ECMO referral and follow-up database. RESULTS: Twelve patients were commenced on VAV ECMO for septic cardiomyopathy for a median of four days (IQR 3...
May 2018: Perfusion
https://www.readbyqxmd.com/read/29788275/feasibility-and-effectiveness-of-laparoscopic-transgastric-stapler-assisted-circumferential-esophageal-mucosectomy-and-simultaneous-fundoplication-in-a-pig-model
#8
D C Steinemann, P C Müller, A-C Schwarz, A Zerz, G R Linke, B P Müller-Stich
Laparoscopic transgastric stapler-assisted mucosectomy (SAM) has been described for minimally invasive circumferential en bloc resection of Barrett's esophagus (BE). Conceivably long-term disease control might be achieved by adding antireflux surgery after resection of BE by SAM. The aim of this study was to assess the feasibility of combined SAM and fundoplication in one laparoscopic procedure in six pigs. Furthermore, the competence of the gastroesophageal junction (GEJ) was assessed at baseline, after SAM, and after subsequent laparoscopic fundoplication...
May 21, 2018: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/29785570/phase-1b-investigation-of-the-mek-inhibitor-binimetinib-in-patients-with-advanced-or-metastatic-biliary-tract-cancer
#9
R S Finn, D H Ahn, M M Javle, B R Tan, C D Weekes, J C Bendell, A Patnaik, G N Khan, D Laheru, R Chavira, J Christy-Bittel, E Barrett, M B Sawyer, Tanios S Bekaii-Saab
Background The MAPK pathway plays a central role in regulation of several cellular processes, and its dysregulation is a hallmark of biliary tract cancer (BTC). Binimetinib (MEK162), a potent, selective oral MEK1/2 inhibitor, was assessed in patients with advanced BTC. Patients and Methods An expansion cohort study in patients who received ≤1 line of therapy for advanced BTC was conducted after determination of the maximum tolerated dose in this Phase 1 trial. Patients received binimetinib 60 mg twice daily...
May 22, 2018: Investigational New Drugs
https://www.readbyqxmd.com/read/29785549/once-episiotomy-always-episiotomy
#10
Ayala Zilberman, Eyal Sheiner, Orit Barrett, Batel Hamou, Tali Silberstein
OBJECTIVE: To investigate the association between episiotomy and perineal damage in the subsequent delivery. STUDY DESIGN: A retrospective cohort study was conducted, comparing outcome of subsequent singleton deliveries of women with and without episiotomy in their first (index) delivery. Deliveries occurred between the years 1991-2015 in a tertiary medical center. Traumatic vaginal tears, multiple pregnancies, and cesarean deliveries (CD) in the index pregnancy were excluded from the analysis...
May 21, 2018: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29785394/notch-signaling-pathway-is-inhibited-in-the-development-of-barrett-s-esophagus-an-in-vivo-and-in-vitro-study
#11
Yun-Cang Wang, Zhi-Qiang Wang, Yong Yuan, Tao Ren, Peng-Zhi Ni, Long-Qi Chen
Objective: To explore the role of Notch signaling in the development of Barrett's esophagus. Methods: Patients with esophagectomy and gastric interposition were recruited as a human model of gastroesophageal reflux disease. The expressions of Notch signaling genes in normal esophagus from surgical specimen and columnar metaplasia in the esophageal remnant after esophagectomy were evaluated by real time quantitative Polymerase Chain Reaction (RT-qPCR) and immunohistochemistry (IHC)...
2018: Canadian Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29784931/reconstruction-of-the-diapsid-ancestral-genome-permits-chromosome-evolution-tracing-in-avian-and-non-avian-dinosaurs
#12
Rebecca E O'Connor, Michael N Romanov, Lucas G Kiazim, Paul M Barrett, Marta Farré, Joana Damas, Malcolm Ferguson-Smith, Nicole Valenzuela, Denis M Larkin, Darren K Griffin
Genomic organisation of extinct lineages can be inferred from extant chromosome-level genome assemblies. Here, we apply bioinformatic and molecular cytogenetic approaches to determine the genomic structure of the diapsid common ancestor. We then infer the events that likely occurred along this lineage from theropod dinosaurs through to modern birds. Our results suggest that most elements of a typical 'avian-like' karyotype (40 chromosome pairs, including 30 microchromosomes) were in place before the divergence of turtles from birds ~255 mya...
May 21, 2018: Nature Communications
https://www.readbyqxmd.com/read/29783974/pathways-to-prevention-protocol-for-the-cap-climate-and-preventure-study-to-evaluate-the-long-term-effectiveness-of-school-based-universal-selective-and-combined-alcohol-misuse-prevention-into-early-adulthood
#13
Nicola C Newton, Lexine Stapinski, Tim Slade, Katrina E Champion, Emma L Barrett, Catherine Chapman, Anna Smout, Siobhan Lawler, Marius Mather, Natalie Castellanos-Ryan, Patricia J Conrod, Maree Teesson
BACKGROUND: Alcohol use and associated harms are among the leading causes of burden of disease among young people, highlighting the need for effective prevention. The Climate and Preventure (CAP) study was the first trial of a combined universal and selective school-based approach to preventing alcohol misuse among adolescents. Initial results indicate that universal, selective and combined prevention were all effective in delaying the uptake of alcohol use and binge drinking for up to 3 years following the interventions...
May 21, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29783927/length-of-barrett-s-segment-predicts-failure-of-eradication-in-radiofrequency-ablation-for-barrett-s-esophagus-a-retrospective-cohort-study
#14
Tyler Luckett, Chaitanya Allamneni, Kevin Cowley, John Eick, Allison Gullick, Shajan Peter
BACKGROUND: We aim to investigate factors that may contribute to failure of eradication of dysplastic Barrett's Esophagus among patients undergoing radiofrequency ablation treatment. METHODS: A retrospective review of patients undergoing radiofrequency ablation for treatment of Barrett's Esophagus was performed. Data analyzed included patient demographics, medical history, length of Barrett's Esophagus, number of radiofrequency ablation sessions, and histopathology...
May 21, 2018: BMC Gastroenterology
https://www.readbyqxmd.com/read/29781915/childhood-asthma-disparities-in-chicago-developing-approaches-to-health-inequities
#15
Molly A Martin, Melissa Gutierrez Kapheim, Kim Erwin, Stacy Ignoffo, Kate McMahon, Amy OʼRourke, Lynn B Gerald, Meredith Barrett, Valerie G Press, Houshang Darabi, Jerry A Krishnan
We conducted a needs assessment to develop an evidence-based, locally tailored asthma care implementation plan for high-risk children with asthma in Chicago. Our team of health policy experts, clinicians, researchers, and designers included extensive stakeholder engagement (N = 162) in a mixed-methods community needs assessment. Results showed the lines of communication and collaboration across sectors were weak; caregivers were the only consistent force and could not always manage this burden. A series of recommendations for interventions and how to implement and measure them were generated...
July 2018: Family & Community Health
https://www.readbyqxmd.com/read/29780162/dietary-antioxidant-intake-and-the-risk-of-developing-barrett-s-oesophagus-and-oesophageal-adenocarcinoma
#16
James H-E Kang, Robert Luben, Leo Alexandre, Andrew R Hart
BACKGROUND: We investigated in a cohort study, for the first time using 7-day food diaries (7-DFDs), for age-dependent inverse associations with antioxidants, which have anti-carcinogenic properties, and development of Barrett's oesophagus (BO) and oesophageal adenocarcinoma (OAC). METHODS: A total of 24,068 well individuals completed 7-DFDs and donated blood. Vitamins C and E, carotenes, zinc and selenium intakes, and plasma vitamin C were measured. Participants were monitored for 15 years for BO and OAC...
May 21, 2018: British Journal of Cancer
https://www.readbyqxmd.com/read/29778551/differences-of-risk-factors-and-clinical-presentations-in-male-and-female-taiwanese-individuals-with-barrett-s-esophagus
#17
Shou-Wu Lee, Han-Chung Lien, Chi-Sen Chang, Chung-Hsin Chang, Chung-Wang Ko, Hong-Zen Yeh
BACKGROUND: Barrett's esophagus (BE) is a disorder more often found in obese men. Differences between the two genders are not known in the Asian countries. Here, we studied their gender differences in the Taiwanese population in terms of risk factors and clinical presentations. METHODS: Data from Taichung Veteran General Hospital were prospectively collected during an approximately two year-period (October 2012 to December 2014). Patients all underwent endoscopic surveillance, and BE was diagnosed based on the typical pattern of intestinal metaplasia...
May 16, 2018: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/29777441/mucosal-ablation-in-patients-with-barrett-s-esophagus-fry-or-freeze
#18
REVIEW
Kavel Visrodia, Liam Zakko, Kenneth K Wang
The management of Barrett's esophagus and early esophageal adenocarcinoma has shifted away from esophagectomy and toward endoscopic techniques, including endoscopic resection and ablative therapies. The most commonly used ablative therapies are radiofrequency ablation and cryotherapy. Radiofrequency ablation has risen to the top of the management algorithm due to its favorable safety profile and established track record of efficacy in patients with dysplastic Barrett's. Cryotherapy offers early promise as an alternatively safe and effective ablative modality...
May 17, 2018: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29775343/observation-of-discrete-time-crystal-signatures-in-an-ordered-dipolar-many-body-system
#19
Jared Rovny, Robert L Blum, Sean E Barrett
A discrete time crystal (DTC) is a robust phase of driven systems that breaks the discrete time translation symmetry of the driving Hamiltonian. Recent experiments have observed DTC signatures in two distinct systems. Here we show nuclear magnetic resonance observations of DTC signatures in a third, strikingly different system: an ordered spatial crystal. We use a novel DTC echo experiment to probe the coherence of the driven system. Finally, we show that interactions during the pulse of the DTC sequence contribute to the decay of the signal, complicating attempts to measure the intrinsic lifetime of the DTC...
May 4, 2018: Physical Review Letters
https://www.readbyqxmd.com/read/29774139/line-drawn-scenes-provide-sufficient-information-for-discrimination-of-threat-and-mere-negativity
#20
Jasmine Boshyan, Lisa Feldman Barrett, Nicole Betz, Reginald B Adams, Kestutis Kveraga
Previous work using color photographic scenes has shown that human observers are keenly sensitive to different types of threatening and negative stimuli and reliably classify them by the presence, and spatial and temporal directions of threat. To test whether such distinctions can be extracted from impoverished visual information, we used 500 line drawings made by hand-tracing the original set of photographic scenes. Sixty participants rated the scenes on spatial and temporal dimensions of threat. Based on these ratings, trend analysis revealed five scene categories that were comparable to those identified for the matching color photographic scenes...
January 2018: I-Perception
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