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https://www.readbyqxmd.com/read/29334562/is-a-pathological-complete-response-following-neoadjuvant-chemoradiation-associated-with-prolonged-survival-in-patients-with-pancreatic-cancer
#1
Jin He, Alex B Blair, Vincent P Groot, Ammar A Javed, Richard A Burkhart, Georgios Gemenetzis, Ralph H Hruban, Kevin M Waters, Justin Poling, Lei Zheng, Daniel Laheru, Joseph M Herman, Martin A Makary, Matthew J Weiss, John L Cameron, Christopher L Wolfgang
OBJECTIVES: To describe the survival outcome of patients with borderline resectable or locally advanced pancreatic ductal adenocarcinoma (BR/LA-PDAC) who have a pathologic complete response (pCR) following neoadjuvant chemoradiation. BACKGROUND: Patients with BR/LA-PDAC are often treated with neoadjuvant chemoradiation in an attempt to downstage the tumor. Uncommonly, a pCR may result. METHODS: A retrospective review of a prospectively maintained database was performed at a single institution...
January 12, 2018: Annals of Surgery
https://www.readbyqxmd.com/read/29334431/activation-state-of-circulating-eosinophils-in-nasal-polyposis
#2
Vincent Dupuch, Arlette Tridon, Sylvie Ughetto, Stéphane Walrand, Benjamin Bonnet, Claude Dubray, Aude Virlogeux, Marie-Paule Vasson, Nicolas Saroul, Thierry Mom, Laurent Gilain, Bertrand Evrard
BACKGROUND: Chronic rhinosinusitis with nasal polyps (CRSwNP) is a common disease with an uncertain pathophysiology. It is characterized by polyps rich in eosinophils, with an activation status already investigated at the tissue level. In a group of CRSwNP patients, we assessed the activation status of circulating eosinophils in the blood before migration into tissues. METHODS: Thirteen patients with CRSwNP and 16 healthy volunteers were enrolled. Several biologic parameters were studied: blood count of eosinophils; plasma eosinophil cationic protein; oxidative metabolism by chemiluminescence at baseline or when activated by phorbol 12-myristate 13-acetate or platelet-activating factor, with or without interleukin-5 (IL-5); percent of granulosar cells; and mean fluorescence intensity (MFI) by flow cytometry...
January 15, 2018: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/29334100/first-principles-simulation-of-local-response-in-transition-metal-dichalcogenides-under-electron-irradiation
#3
Anthony Yoshimura, Michael Lamparski, Neerav Kharche, Vincent Meunier
Electron beam irradiation by transmission electron microscopy (TEM) is a common and effective method for post-synthesis defect engineering in two-dimensional transition metal dichalcogenides (TMDs). Combining density functional theory (DFT) with relativistic scattering theory, we simulate the generation of such defects in monolayer group-VI TMDs, MoS2, WS2, MoSe2, and WSe2, focusing on two fundamental TEM-induced atomic displacement processes: chalcogen sputtering and chalcogen vacancy migration. Our calculations show that the activation energies of chalcogen sputtering depend primarily on the chalcogen species, and are smaller in selenides than in sulfides...
January 15, 2018: Nanoscale
https://www.readbyqxmd.com/read/29333859/chromatographic-separation-and-visual-detection-on-wicking-microfluidic-devices-quantitation-of-cu2-in-surface-ground-and-drinking-water
#4
Gayan C Bandara, Christopher Heist, Vincent T Remcho
Copper is widely applied in industrial and technological applications, and is an essential micro nutrient for humans and animals. However, exposure to high environmental levels of copper, especially through drinking water, can lead to copper toxicity, resulting in severe acute and chronic health effects. Therefore, regular monitoring of aqueous copper ions has become necessary as recent anthropogenic activities have led to elevated environmental concentrations of copper. On-site monitoring processes require an inexpensive, simple, and portable analytical approach capable of generating reliable qualitative and quantitative data efficiently...
January 15, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29333478/a-general-method-for-intracellular-protein-delivery-through-e-tag-protein-engineering-and-arginine-functionalized-gold-nanoparticles
#5
Rubul Mout, Vincent M Rotello
In this protocol, we describe a method for direct cytosolic protein delivery that avoids endosomal entrapment of the delivered proteins. We achieved this by tagging the desired protein with an oligo glutamic acid tag (E-tag), and subsequently using carrier gold nanoparticles to deliver these E-tagged proteins. When E-tagged proteins and nanoparticles were mixed, they formed nanoassemblies, which got fused to cell membrane upon incubation and directly released the E-tagged protein into cell cytosol. We used this method to deliver a wide variety of proteins with different sizes, charges, and functions in various cell lines (Mout et al...
December 20, 2017: Bio-protocol
https://www.readbyqxmd.com/read/29333363/creating-a-multi-center-rare-disease-consortium-the-consortium-of-eosinophilic-gastrointestinal-disease-researchers-cegir
#6
Katherine Cheng, Sandeep K Gupta, Susanna Kantor, Jonathan T Kuhl, Seema S Aceves, Peter A Bonis, Kelley E Capocelli, Christina Carpenter, Mirna Chehade, Margaret H Collins, Evan S Dellon, Gary W Falk, Rashmi Gopal-Srivastava, Nirmala Gonsalves, Ikuo Hirano, Eileen C King, John Leung, Jeffrey P Krischer, Vincent A Mukkada, Alain Schoepfer, Jonathan M Spergel, Alex Straumann, Guang-Yu Yang, Glenn T Furuta, Marc E Rothenberg
 Eosinophilic gastrointestinal disorders (EGIDs) affect various segments of the gastrointestinal tract. Since these disorders are rare, collaboration is essential to enroll subjects in clinical studies and study the broader population. The Rare Diseases Clinical Research Network (RDCRN), a program of the National Center for Advancing Translational Sciences (NCATS), funded the Consortium of Eosinophilic Gastrointestinal Disease Researchers (CEGIR) in 2014 to advance the field of EGIDs. CEGIR facilitates collaboration among various centers, subspecialties, patients, professional organizations and patient-advocacy groups and includes 14 clinical sites...
December 18, 2017: Translational Science of Rare Diseases
https://www.readbyqxmd.com/read/29333339/time-multiplexed-deep-reactive-ion-etching-of-germanium-and-silicon-a-comparison-of-mechanisms-and-application-to-x-ray-optics
#7
Vincent J Genova, David N Agyeman-Budu, Arthur R Woll
Although the mechanisms of deep reactive ion etching (DRIE) of silicon have been reported extensively, very little by comparison has been discussed concerning DRIE of germanium. By directly comparing silicon and germanium etching in a time multiplexed DRIE process, the authors extract significant differences in etch mechanisms from a design of experiment and discuss how these differences are relevant to the design and fabrication of silicon and germanium collimating channel array x-ray optics. The differences are illuminated by characteristics such as reactive ion etching (RIE)-lag, aspect ratio dependent etching, and sidewall passivation...
January 2018: Journal of Vacuum Science and Technology. B, Nanotechnology & Microelectronics: Materials, Processing, Measurement, & Phenomena: JVST B
https://www.readbyqxmd.com/read/29332841/improved-neuron-culture-using-scaffolds-made-of-three-dimensional-pdms-micro-lattices
#8
Sisi Li, Francesco Paolo Ulloa Severino, Jelena Ban, Li Wang, Giulietta Pinato, Vincent Torre, Yong Chen
Tissue engineering strives to create functional components of organs with different cell types in vitro. One of the challenges is to fabricate scaffolds for three-dimensional (3D) cell culture under physiological conditions. Of particular interesting is to investigate the morphology and function of the central nervous system (CNS) cultured using such scaffolds. Here, we used an elastomer, polydimethylsiloxane (PDMS), to produce lattice-type scaffolds from a photolithography defined template. The photomask with antidot arrays was spin-coated by a thick layer of resist and downward mounted on a rotating stage at angle of 45°...
January 15, 2018: Biomedical Materials
https://www.readbyqxmd.com/read/29332398/high-performance-thermoelectric-bulk-colusite-by-process-controlled-structural-disordering
#9
Cédric Bourgès, Yohan Bouyrie, Andrew R Supka, Rabih Al Rahal Al Orabi, Pierric Lemoine, O I Lebedev, Michihiro Ohta, Koichiro Suekuni, Vivian Nassif, Vincent Hardy, Ramzy Daou, Yuzuru Miyazaki, Marco Fornari, Emmanuel Guilmeau
High-performance thermoelectric bulk sulfide with the colusite structure is achieved by controlling the densification process and forming short-to-medium range structural defects. A simple and powerful way to adjust carrier concentration combined with enhanced phonon scattering through point defects and disordered regions is described. By combining experiments with band structure and phonons calculations, we elucidate, for the first time, the underlying mechanism at the origin of intrinsically low thermal conductivity in colusite samples as well as the effect of S vacancies and antisite defects on the carrier concentration...
January 14, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29332119/autofluorescence-of-skin-advanced-glycation-end-products-as-a-risk-factor-for-open-angle-glaucoma-the-alienor-study
#10
Cedric Schweitzer, Audrey Cougnard-Gregoire, Vincent Rigalleau, Jean-Francois Dartigues, Florence Malet, Marie-Benedicte Rougier, Marie-Noelle Delyfer, Catherine Helmer, Jean-Francois Korobelnik, Cecile Delcourt
Purpose: To analyze the association between skin autofluorescence (sAF), estimating tissue accumulation of advanced glycation end-products (AGEs), and open angle glaucoma (OAG) in an elderly population. Methods: The Antioxydants, Lipides Essentiels, Nutrition and maladies OculaiRes (ALIENOR) study is an on-going epidemiologic population-based study on age-related eye diseases. In 2009 to 2010, 624 subjects, aged 74 years or older, were recruited. All subjects underwent a complete eye examination, including optic disc color photography and spectral-domain optical coherence tomography (SD-OCT) examination...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29332068/the-role-of-preoperative-steroids-for-hearing-preservation-cochlear-implantation-results-of-a-randomized-controlled-trial
#11
Jafri Kuthubutheen, Samidha Joglekar, Leah Smith, Lendra Friesen, Kari Smilsky, Tara Millman, Amy Ng, David Shipp, Harvey Coates, Christoph Arnoldner, Julian Nedzelski, Joseph Chen, Vincent Lin
OBJECTIVES: To determine whether preoperative steroids can improve hearing outcomes in cochlear implantation (CI). METHODS: This is a randomized controlled trial involving 30 postlingual deaf CI patients. Subjects had preoperative thresholds of better than or equal to 80 dB at 125 and 250 Hz, and better than or equal to 90 dB at 500 and 1,000 Hz. The subjects were randomized to a control group, an oral steroid group (receiving 1 mg/kg/day of prednisolone for 6 days prior to surgery), or a transtympanic steroid group (receiving a single dose of 0...
January 13, 2018: Audiology & Neuro-otology
https://www.readbyqxmd.com/read/29331601/predictors-of-length-of-stay-in-psychiatric-inpatient-units-does-their-effect-vary-across-countries
#12
Giorgia Dimitri, Domenico Giacco, Michael Bauer, Victoria Jane Bird, Lauren Greenberg, Antonio Lasalvia, Vincent Lorant, Jacek Moskalewicz, Pablo Nicaise, Andrea Pfennig, Mirella Ruggeri, Marta Welbel, Stefan Priebe
BACKGROUND: Previous studies in individual countries have identified inconsistent predictors of length of stay (LoS) in psychiatric inpatient units. This may reflect methodological inconsistencies across studies or true differences of predictors. In this study we assessed predictors of LoS in five European countries and explored whether their effect varies across countries. METHODS: Prospective cohort study. All patients admitted over 14 months to 57 psychiatric inpatient units in Belgium, Germany, Italy, Poland and United Kingdom were screened...
December 7, 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/29331189/-day-clinic-a-gateway-towards-risk-reduction
#13
Viviane Ben Nifla, Philippe Celli, Hélène Samba, Cécile Vincent
The addictology day clinic at Fernand-Widal hospital in Paris caters mainly for patients suffering from alcohol dependence. The aim is to consolidate the withdrawal which has taken place, to help reduce risks and harm and to support people waiting for follow-up care.
January 2018: Revue de L'infirmière
https://www.readbyqxmd.com/read/29331060/regional-hippocampal-vulnerability-in-early-multiple-sclerosis-dynamic-pathological-spreading-from-dentate-gyrus-to-ca1
#14
Vincent Planche, Ismail Koubiyr, José E Romero, José V Manjon, Pierrick Coupé, Mathilde Deloire, Vincent Dousset, Bruno Brochet, Aurélie Ruet, Thomas Tourdias
BACKGROUND: Whether hippocampal subfields are differentially vulnerable at the earliest stages of multiple sclerosis (MS) and how this impacts memory performance is a current topic of debate. METHOD: We prospectively included 56 persons with clinically isolated syndrome (CIS) suggestive of MS in a 1-year longitudinal study, together with 55 matched healthy controls at baseline. Participants were tested for memory performance and scanned with 3 T MRI to assess the volume of 5 distinct hippocampal subfields using automatic segmentation techniques...
January 13, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29330883/genotype-phenotype-correlations-in-individuals-with-pathogenic-rere-variants
#15
Valerie K Jordan, Brieana Fregeau, Xiaoyan Ge, Jessica Giordano, Ronald J Wapner, Tugce B Balci, Melissa T Carter, John A Bernat, Amanda N Moccia, Anshika Srivastava, Donna M Martin, Stephanie L Bielas, John Pappas, Melissa D Svoboda, Marlène Rio, Nathalie Boddaert, Vincent Cantagrel, Andrea M Lewis, Fernando Scaglia, Jennefer N Kohler, Jonathan A Bernstein, Annika M Dries, Jill A Rosenfeld, Colette DeFilippo, Willa Thorson, Yaping Yang, Elliott H Sherr, Weimin Bi, Daryl A Scott
Heterozygous variants in the arginine-glutamic acid dipeptide repeats gene (RERE) have been shown to cause neurodevelopmental disorder with or without anomalies of the brain, eye, or heart (NEDBEH). Here we report nine individuals with NEDBEH who carry partial deletions or deleterious sequence variants in RERE. These variants were found to be de novo in all cases in which parental samples were available. An analysis of data from individuals with NEDBEH suggests that point mutations affecting the Atrophin-1 domain of RERE are associated with an increased risk of structural eye defects, congenital heart defects, renal anomalies and sensorineural hearing loss when compared to loss-of-function variants that are likely to lead to haploinsufficiency...
January 13, 2018: Human Mutation
https://www.readbyqxmd.com/read/29330083/rationale-and-design-of-the-clinic-and-community-approaches-to-healthy-weight-randomized-trial
#16
Lauren Fiechtner, Meghan Perkins, Vincent Biggs, Nancy Langhans, Mona Sharifi, Giselle O'Connor, Sarah Price, Joseph Locascio, Karen Kuhlthau, Jo-Ann Kwass, Candace Nelson, Thomas Land, Matt Longjohn, Valerie Lawson, Katherine Hohman, Elsie M Taveras
BACKGROUND: Recent studies have demonstrated the effectiveness of family-centered, pediatric weight management programs in reducing childhood obesity. Yet, programs to optimize the care of low-income children with obesity are needed. We sought to examine the comparative effectiveness of two, potentially scalable pediatric weight management programs delivered to low-income children in a clinical or community setting. MATERIALS AND METHODS: The Clinic and Community Approaches to Healthy Weight trial is a randomized trial in two communities in Massachusetts that serve a large population of low-income children and families...
January 9, 2018: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/29329963/switch-to-ticagrelor-in-critical-limb-ischemia-antiplatelet-study-stt-clips
#17
Leonardo C Clavijo, Ashwat Dhillon, Noor Al-Asady, Ray V Matthews, Jorge Caro, Han Tun, Vincent Rowe, David M Shavelle
OBJECTIVE: To investigate platelet reactivity in patients with critical limb ischemia (CLI) after switching from clopidogrel to ticagrelor. BACKGROUND: High on-treatment platelet reactivity (HPR) is highly prevalent in patients with CLI treated with clopidogrel. The effect of ticagrelor in patients with CLI is not known, however. METHODS: We performed P2Y12 platelet receptor inhibition studies (VASP and VerifyNow) in 50 patients with CLI. Tests were performed before and 6±1h after daily 75mg clopidogrel dose...
September 5, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29329803/explant-of-a-ball-and-cage-valve-42-years-after-initial-implant
#18
Frank Battaglia, Lisa Mielniczuk, Jean-Yves Dupuis, Vincent Chan
No abstract text is available yet for this article.
December 14, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29329600/optimal-waist-circumference-cut-off-points-for-predicting-metabolic-syndrome-among-low-income-black-south-african-adults
#19
Eyitayo Omolara Owolabi, Daniel Ter Goon, Oladele Vincent Adeniyi, Anthony Idowu Ajayi
OBJECTIVE: Waist circumference has been identified as one of the strongest predictive tool for metabolic syndrome. This study determines the optimal cut-off point of waist circumference for metabolic syndrome among low-income earning South African black population, in Eastern Cape, South Africa. The optimal waist circumference cut-off point was determined through receiver operating characteristics analysis using the maximum Youden index. RESULTS: Among men, waist circumference at a cut-off value of 95...
January 12, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29329495/organometallic-mediated-radical-polymerization-of-vinylidene-fluoride
#20
Bruno Michel Ameduri, Rinaldo Poli, Vincent Ladmiral, Sanjib Banerjee, Antoine Debuigne, Christophe Detrembleur
An unprecedented level of control for the radical polymerization of vinylidene fluoride (VDF), yielding well-defined PVDF (at least up to 14,500 g/mol) with low dispersity (≤1.32), was achieved using organometallic mediated radical polymerization (OMRP) with an organocobalt compound as initiator. The high chain-end fidelity was demonstrated by the synthesis of PVDF- and PVAc-containing di-and tri-block copolymers. DFT calculations rationalize the equally efficient reactivation of the dormant species with both head and tail chain ends...
January 12, 2018: Angewandte Chemie
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