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https://www.readbyqxmd.com/read/28222261/enhanced-release-of-molecules-upon-uv-light-irradiation-from-photoresponsive-hydrogels-prepared-from-bifunctional-azobenzene-and-four-arm-poly-ethylene-glycol
#1
Shiva Kumar Rastogi, Hailee E Anderson, Joseph Lamas, Scott L Barrett, Travis Cantu, Stefan Zauscher, William J Brittain, Tania Betancourt
Advances in biosensors and drug delivery depend on hydrogels that respond to external stimuli. In this work we de-scribe the preparation and characterization of photoresponsive hydrogels prepared by crosslinking of di-NHS ester of azobenzoic acid and four-armed, amine-terminated poly(ethylene glycol). The porous structure and composition of the hydrogels were confirmed by scanning electron microscopy and Fourier transform infrared (FTIR) spectroscopy. The reversible photoisomerization of the azobenzene-containing hydrogel crosslinkers in the gels was confirmed by ab-sorption spectroscopy...
February 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28220892/epigenetic-determinants-of-space-radiation-induced-cognitive-dysfunction
#2
Munjal M Acharya, Al Anoud D Baddour, Takumi Kawashita, Barrett D Allen, Amber R Syage, Thuan H Nguyen, Nicole Yoon, Erich Giedzinski, Liping Yu, Vipan K Parihar, Janet E Baulch
Among the dangers to astronauts engaging in deep space missions such as a Mars expedition is exposure to radiations that put them at risk for severe cognitive dysfunction. These radiation-induced cognitive impairments are accompanied by functional and structural changes including oxidative stress, neuroinflammation, and degradation of neuronal architecture. The molecular mechanisms that dictate CNS function are multifaceted and it is unclear how irradiation induces persistent alterations in the brain. Among those determinants of cognitive function are neuroepigenetic mechanisms that translate radiation responses into altered gene expression and cellular phenotype...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28216798/herbivorous-dinosaur-jaw-disparity-and-its-relationship-to-extrinsic-evolutionary-drivers
#3
Jamie A MacLaren, Philip S L Anderson, Paul M Barrett, Emily J Rayfield
Morphological responses of nonmammalian herbivores to external ecological drivers have not been quantified over extended timescales. Herbivorous nonavian dinosaurs are an ideal group to test for such responses, because they dominated terrestrial ecosystems for more than 155 Myr and included the largest herbivores that ever existed. The radiation of dinosaurs was punctuated by several ecologically important events, including extinctions at the Triassic/Jurassic (Tr/J) and Jurassic/Cretaceous (J/K) boundaries, the decline of cycadophytes, and the origin of angiosperms, all of which may have had profound consequences for herbivore communities...
February 2017: Paleobiology
https://www.readbyqxmd.com/read/28216140/expression-profiles-of-cancer-stem-cell-markers-cd133-cd44-musashi-1-and-epcam-in-the-cardiac-mucosa-barrett-s-esophagus-early-esophageal-adenocarcinoma-advanced-esophageal-adenocarcinoma-sequence
#4
Anna Mokrowiecka, Lothar Veits, Christina Falkeis, Jacek Musial, Radzislaw Kordek, Mariusz Lochowski, Jozef Kozak, Agnieszka Wierzchniewska-Lawska, Michael Vieth, Ewa Malecka-Panas
INTRODUCTION: Barrett's esophagus (BE), which develops as a result of gastroesophageal reflux disease, is a preneoplastic condition for esophageal adenocarcinoma (EAC). A new hypothesis suggests that cancer is a disease of stem cells, however, their expression and pathways in BE - EAC sequence are not fully elucidated yet. AIMS: We used a panel of putative cancer stem cells markers to identify stem cells in consecutive steps of BE-related cancer progression. METHODS: Immunohistochemistry was performed on formalin-fixed, paraffin-embedded blocks from 58 patients with normal cardiac mucosa (n=5), BE (n=14), early EAC (pT1) from mucosal resection (n=17) and advanced EAC (pT1-T4) from postoperative specimens (n=22)...
December 30, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28215067/epidemiology-and-natural-history-of-gastro-esophageal-reflux-disease
#5
Edoardo Savarino, Elisa Marabotto, Giorgia Bodini, Gaia Pellegatta, Claudia Coppo, Elisa Giambruno, Matteo Brunacci, Patrizia Zentilin, Vincenzo Savarino
Gastroesophageal reflux disease (GERD) is highly prevalent in Western countries, particularly when considering its most classic symptom, that is heartburn. This symptom is very frequent in the community and ranges from 10% to more than 30%, according to the various population-based studies. This disease is much more represented in Europe and US than in Asiatic countries. It has been shown that GERD prevalence increases in parallel with the remarkable growth of obesity, as this condition is able to favor all the pathogenetic mechanisms leading to it...
February 17, 2017: Minerva Gastroenterologica e Dietologica
https://www.readbyqxmd.com/read/28214947/the-redistribution-of-non-breeding-dunlins-in-response-to-the-post-ddt-recovery-of-falcons
#6
Ronald C Ydenberg, Jennifer Barrett, David B Lank, Cailin Xu, Michiel Faber
Large-scale changes in predator populations are occurring worldwide due to (re-)introductions, over-exploitation, or recovery after decimation by pesticides and persecution. These widespread changes may affect the distribution of their prey. We studied the continental-scale distributions of non-breeding Calidris alpina pacifica and C. a. hudsonia (Pacific and Atlantic dunlins, respectively), as numbers of their major predators-peregrines (Falco peregrinus) and merlins (F. columbarius; together 'falcons')-increased after DDT was banned in 1973...
February 18, 2017: Oecologia
https://www.readbyqxmd.com/read/28214656/risk-of-oesophageal-adenocarcinoma-in-individuals-with-barrett-s-oesophagus
#7
Dag Holmberg, Eivind Ness-Jensen, Fredrik Mattsson, Hashem B El-Serag, Jesper Lagergren
INTRODUCTION: Recent studies have indicated a lower incidence rate of oesophageal adenocarcinoma (OAC) in individuals with Barrett's oesophagus (BO) than most earlier studies. Our objective was to assess the risk of OAC in a Swedish unselected cohort of individuals with BO. METHODS: This population-based cohort study included all Swedish residents diagnosed with BO in 2006-2013, identified through the Swedish Patient Registry. The cohort members were followed from the date of first BO diagnosis until the first occurrence of OAC, high-grade dysplasia (HGD), death, emigration or end of study period...
February 16, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28213358/fields-of-nursing-do-we-need-them-what-should-they-be-and-when-should-nurses-choose-theirs
#8
David Barrett
No abstract text is available yet for this article.
February 17, 2017: Evidence-based Nursing
https://www.readbyqxmd.com/read/28212604/high-expression-of-claudin-2-in-esophageal-carcinoma-and-precancerous-lesions-is-significantly-associated-with-the-bile-salt-receptors-vdr-and-tgr5
#9
Sohaib Abu-Farsakh, Tongtong Wu, Amy Lalonde, Jun Sun, Zhongren Zhou
BACKGROUND: Claudins are a family of integral membrane proteins and are components of tight junctions (TJs). Many TJ proteins are known to tighten the cell structure and maintain a barrier. Claudin-2 forms gated paracellular channels and allows sodium ions and other small positively charged ions to cross between adjacent cells. Recently, we found that vitamin D receptor (VDR) enhanced Claudin-2 expression in colon and that bile salt receptors VDR and Takeda G-protein coupled receptor5 (TGR5) were highly expressed in esophageal adenocarcinoma (EAC) and precancerous lesions...
February 17, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/28212575/upregulation-of-mucin-glycoprotein-muc1-in-the-progression-to-esophageal-adenocarcinoma-and-therapeutic-potential-with-a-targeted-photoactive-antibody-drug-conjugate
#10
Mohammed Adil Butt, Hayley Pye, Rehan J Haidry, Dahmane Oukrif, Saif-U-Rehman Khan, Ignazio Puccio, Michael Gandy, Halla W Reinert, Ellie Bloom, Mohammed Rashid, Gokhan Yahioglu, Mahendra P Deonarain, Rifat Hamoudi, Manuel Rodriguez-Justo, Marco R Novelli, Laurence B Lovat
BACKGROUND: Mucin glycoprotein 1 (MUC1) is a glycosylated transmembrane protein on epithelial cells. We investigate MUC1 as a therapeutic target in Barrett's epithelium (BE) and esophageal adenocarcinoma (EA) and provide proof of concept for a light based therapy targeting MUC1. RESULTS: MUC1 was present in 21% and 30% of significantly enriched pathways comparing BE and EA to squamous epithelium respectively. MUC1 gene expression was x2.3 and x2.2 higher in BE (p=<0...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28207028/commentary-on-burnout-in-the-plastic-surgeon-implications-and-interventions
#11
R Barrett Noone
No abstract text is available yet for this article.
March 1, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/28206968/intratumoral-lactate-metabolism-in-barrett-s-esophagus-and-adenocarcinoma
#12
Heikki Huhta, Olli Helminen, Sami Palomäki, Joonas H Kauppila, Juha Saarnio, Petri P Lehenkari, Tuomo J Karttunen
BACKGROUND: Monocarboxylate transporters (MCTs) are cell membrane proteins which transport pyruvate, lactate and ketone bodies across the plasma membrane. MCTs are activated in various cancers, but their expression in esophageal adenocarcinoma is not known. The present study was conducted to elucidate the expression of MCTs in esophageal adenocarcinoma and its precursor lesions. RESULTS: Cytoplasmic MCT1, MCT4 and MTCO1 expression linearly increased from normal epithelium to Barrett's mucosa to dysplasia and cancer...
February 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28205741/p-44-radiofrequency-ablation-in-treatment-of-barrett-s-esophagus-also-in-esophageal-atresia
#13
P De Angelis, P Trentino, E F Romeo, G Federici di Abriola, F Rea, T Caldaro, F Torroni, A C Contini, L Dall'Oglio, F Baldi
No abstract text is available yet for this article.
April 1, 2016: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/28205737/p-33-barrett-s-esophagus-and-eosinophilic-esophagitis-in-a-young-patient-with-esophageal-atresia
#14
L Tan, A J Gifford, C M Clarkson, G M Henry, U Krishnan
No abstract text is available yet for this article.
April 1, 2016: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/28205690/o-10-11-50-to-12-02-prevalence-of-barrett-esophagus-in-adolescents-and-young-adults-with-esophageal-atresia
#15
A Schneider, F Gottrand, M Bellaiche, F Becmeur, A Lachaux, A Dabadie, J L Michel, C Faure, P Philippe, Y Vandenplas, C Dupont, A Breton, J Gaudin, T Lamireau, L Muyshont, G Podevin, S Viola, V Bertrand, D Caldari, S Colinet, E Sokal, E Sauleau, E Leteurtre, L Michaud
No abstract text is available yet for this article.
April 1, 2016: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/28205333/longitudinal-study-of-clinical-prognostic-factors-in-patients-with-early-rheumatoid-arthritis-the-predict-study
#16
Paul Bird, Dave Nicholls, Rina Barrett, Julien de Jager, Hedley Griffiths, Lynden Roberts, Kathleen Tymms, Philip McCloud, Geoffrey Littlejohn
AIM: To assess the association between baseline clinical prognostic factors and subsequent Disease Activity Score of 28 joints (DAS28) remission in early rheumatoid arthritis (RA). METHODS: Data were collected using point of care clinical software from participating rheumatology centres. Patients aged 18 years or over whose date of clinical onset of RA was within the previous 12-24 months, who had at least 6 months of follow-up data and a DAS28-ESR (erythrocyte sedimentation rate) score recorded between 12 and 24 months from first being seen for RA were included...
February 16, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28205007/long-term-evaluation-of-biliary-reflux-after-experimental-one-anastomosis-gastric-bypass-in-rats
#17
Matthieu Bruzzi, Henri Duboc, Caroline Gronnier, Dominique Rainteau, Anne Couvelard, Maude Le Gall, André Bado, Jean-Marc Chevallier
BACKGROUND: Controversy remains regarding biliary reflux after one-anastomosis gastric bypass (OAGB). The aim of this "pilot" study was to analyze biliary reflux and its potential long-term consequences on esogastric mucosae in OAGB-operated rats. METHODS: Diet-induced obese rats were subjected to OAGB (n = 10) or sham (n = 4) surgery and followed up for 16 weeks. Evolution of weight and glucose tolerance was analyzed. Bile acid concentration measurement, histological and qRT-PCR analysis were performed in the esogastric segments...
February 15, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28197857/diallyl-disulfide-suppresses-the-inflammation-and-apoptosis-resistance-induced-by-dca-through-ros-and-the-nf-%C3%AE%C2%BAb-signaling-pathway-in-human-barrett-s-epithelial-cells
#18
Cheng Feng, Yumei Luo, Yuanyuan Nian, Dong Liu, Xiaoran Yin, Jing Wu, Jia Di, Rong Zhang, Jun Zhang
Barrett's esophagus (BE) is generally accepted as the only precursor to esophageal adenocarcinoma (EAC). Deoxycholic acid (DCA)-induced inflammation and apoptotic resistance play an important role in the carcinogenesis and progression from BE to EAC. Diallyl disulfide (DADS) is a garlic-derived natural organosulfur compound. This study investigated whether DADS has chemopreventive effects against BE and the potentially related signaling pathway. BAR-T cells were treated with DCA in the presence or absence of DADS...
February 14, 2017: Inflammation
https://www.readbyqxmd.com/read/28196915/proper-accounting-for-surface-area-to-solution-volume-ratios-in-exaggerated-extractions
#19
Dennis Jenke, Barrett Rabinow
When drug products contact plastic manufacturing components, packaging systems and/or delivery devices, leachables from the plastics can accumulate in the drug product, potentially affecting its key quality attributes. Given practical issues associated with screening drug products for leachables, potential leachables are frequently surfaced as extractables revealed in extraction studies. To facilitate extractables discovery and identification and to shorten extraction times, extraction studies can be exaggerated and/or accelerated...
February 14, 2017: PDA Journal of Pharmaceutical Science and Technology
https://www.readbyqxmd.com/read/28195178/recurrence-of-barrett-s-esophagus-is-rare-following-endoscopic-eradication-therapy-coupled-with-effective-reflux-control
#20
Srinadh Komanduri, Peter J Kahrilas, Kumar Krishnan, Tim McGorisk, Kiran Bidari, David Grande, Laurie Keefer, John Pandolfino
OBJECTIVES: Recent data suggest that effective control of gastroesophageal reflux improves outcomes associated with endoscopic eradication therapy (EET) for Barrett's esophagus (BE). However, the impact of reflux control on preventing recurrent intestinal metaplasia and/or dysplasia is unclear. The aims of the study were: (a) to determine the effectiveness and durability of EET under a structured reflux management protocol and (b) to determine the impact of optimizing anti-reflux therapy on achieving complete eradication of intestinal metaplasia (CE-IM)...
February 14, 2017: American Journal of Gastroenterology
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