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https://www.readbyqxmd.com/read/28059341/high-speed-three-dimensional-tomographic-laser-induced-incandescence-imaging-of-soot-volume-fraction-in-turbulent-flames
#1
Terrence R Meyer, Benjamin R Halls, Naibo Jiang, Mikhail N Slipchenko, Sukesh Roy, James R Gord
High-speed, laser-based tomographic imaging of the three-dimensional time evolution of soot volume fraction in turbulent jet diffusion flames is demonstrated to be feasible at rates of 10 kHz or higher. The fundamental output of a burst-mode Nd:YAG laser with 1 J/pulse is utilized for volumetric impulsive heating of soot particles with a laser fluence of 0.1 J/cm<sup>2</sup>, enabling signal-to-noise ratios of ~100:1 in images of the resulting incandescence. The three-dimensional morphology of the soot distribution is captured with a spatial resolution of <1...
December 26, 2016: Optics Express
https://www.readbyqxmd.com/read/28043480/the-integrated-comprehensive-care-program-a-novel-home-care-initiative-after-major-thoracic-surgery
#2
Yaron Shargall, Wael C Hanna, Laura Schneider, Colin Schieman, Christian J Finley, Anna Tran, Shantel Demay, Carolyn Gosse, James M Bowen, Gord Blackhouse, Kevin Smith
The objective of the study was to evaluate the Integrated Comprehensive Care (ICC) program, a novel health system integration initiative that coordinates home care and hospital-based clinical services for patients undergoing major thoracic surgery relative to traditional home care delivery. Methods included a pilot retrospective cohort analysis that compared the intervention cohort (ICC), composed of all patients undergoing major thoracic surgery in the 2012-2013 fiscal year with a control cohort, who underwent surgery in the year before the initiation of ICC...
July 2016: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27960645/combined-therapy-in-children-and-adolescents-with-classical-hodgkin-s-lymphoma-a-report-from-the-sfce-on-mdh-03-national-guidelines
#3
E Seror, J Donadieu, H Pacquement, S Abbou, A Lambilliotte, M Schell, C Curtillet, V Gandemer, M Pasquet, N Aladjidi, P Lutz, C Schmitt, A Deville, O Minckes, J P Vanier, C Armari-Alla, C Thomas, S Gorde-Grosjean, F Millot, P Blouin, N Garnier, C Coze, C Devoldere, Y Reguerre, S Helfre, L Claude, J Clavel, O Oberlin, J Landman-Parker, T Leblanc
Hodgkin's lymphoma (HL) in children and adolescents is highly curable, but children are at risk of long-term toxicity. The MDH-03 guidelines were established in order to decrease the burden of treatment in good-responder patients, and this report should be considered a step toward further optimization of treatment within large collaborative trials. We report the therapy and long-term outcomes of 417 children and adolescents treated according to the national guidelines, which were applied between 2003 and 2007 in France...
October 2016: Pediatric Hematology and Oncology
https://www.readbyqxmd.com/read/27904862/risk-factors-for-barrett-s-oesophagus
#4
REVIEW
Neel Sharma, Khek Yu Ho
BACKGROUND: Barrett's oesophagus (BO) is a premalignant condition associated with the development of oesophageal adenocarcinoma (OAC). Globally, the incidence of OAC is rising. Furthermore, the prognosis regarding the morbidity and mortality of OAC is bleak, with an estimated 5-year survival of 10-15%. Hence, detection of the premalignant phase is paramount. Endoscopy and biopsy sampling is the mainstay of diagnosis. Patients may present with symptoms of gastro-oesophageal reflux disease (GORD) or be completely asymptomatic...
October 2016: Gastrointestinal Tumors
https://www.readbyqxmd.com/read/27889625/cortical-interneuron-specification-the-juncture-of-genes-time-and-geometry
#5
REVIEW
Rachel C Bandler, Christian Mayer, Gord Fishell
A fundamental question in developmental neuroscience is how hundreds of diverse cell types are generated to form specialized brain regions. The ganglionic eminences (GEs) are embryonic brain structures located in the ventral telencephalon that produce many inhibitory GABA (γ-Aminobutyric acid)-ergic cell types, including long-range projection neurons and local interneurons (INs), which disperse widely throughout the brain. While much has been discovered about the origin and wiring of these cells, a major question remains: how do neurons originating in the GEs become specified during development as one differentiated subtype versus another? This review will cover recent work that has advanced our knowledge of the mechanisms governing cortical interneuron subtype specification, particularly progenitors' spatial origin, birthdates, lineage, and mode of division...
November 24, 2016: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/27846485/human-brains-teach-us-a-surprising-lesson
#6
Melissa McKenzie, Gord Fishell
No abstract text is available yet for this article.
October 7, 2016: Science
https://www.readbyqxmd.com/read/27845421/rs2735383-located-at-a-microrna-binding-site-in-the-3-utr-of-nbs1-is-not-associated-with-breast-cancer-risk
#7
Jingjing Liu, Ivona Lončar, J Margriet Collée, Manjeet K Bolla, Joe Dennis, Kyriaki Michailidou, Qin Wang, Irene L Andrulis, Monica Barile, Matthias W Beckmann, Sabine Behrens, Javier Benitez, Carl Blomqvist, Bram Boeckx, Natalia V Bogdanova, Stig E Bojesen, Hiltrud Brauch, Paul Brennan, Hermann Brenner, Annegien Broeks, Barbara Burwinkel, Jenny Chang-Claude, Shou-Tung Chen, Georgia Chenevix-Trench, Ching Y Cheng, Ji-Yeob Choi, Fergus J Couch, Angela Cox, Simon S Cross, Katarina Cuk, Kamila Czene, Thilo Dörk, Isabel Dos-Santos-Silva, Peter A Fasching, Jonine Figueroa, Henrik Flyger, Montserrat García-Closas, Graham G Giles, Gord Glendon, Mark S Goldberg, Anna González-Neira, Pascal Guénel, Christopher A Haiman, Ute Hamann, Steven N Hart, Mikael Hartman, Sigrid Hatse, John L Hopper, Hidemi Ito, Anna Jakubowska, Maria Kabisch, Daehee Kang, Veli-Matti Kosma, Vessela N Kristensen, Loic Le Marchand, Eunjung Lee, Jingmei Li, Artitaya Lophatananon, Jan Lubinski, Arto Mannermaa, Keitaro Matsuo, Roger L Milne, Susan L Neuhausen, Heli Nevanlinna, Nick Orr, Jose I A Perez, Julian Peto, Thomas C Putti, Katri Pylkäs, Paolo Radice, Suleeporn Sangrajrang, Elinor J Sawyer, Marjanka K Schmidt, Andreas Schneeweiss, Chen-Yang Shen, Martha J Shrubsole, Xiao-Ou Shu, Jacques Simard, Melissa C Southey, Anthony Swerdlow, Soo H Teo, Daniel C Tessier, Somchai Thanasitthichai, Ian Tomlinson, Diana Torres, Thérèse Truong, Chiu-Chen Tseng, Celine Vachon, Robert Winqvist, Anna H Wu, Drakoulis Yannoukakos, Wei Zheng, Per Hall, Alison M Dunning, Douglas F Easton, Maartje J Hooning, Ans M W van den Ouweland, John W M Martens, Antoinette Hollestelle
NBS1, also known as NBN, plays an important role in maintaining genomic stability. Interestingly, rs2735383 G > C, located in a microRNA binding site in the 3'-untranslated region (UTR) of NBS1, was shown to be associated with increased susceptibility to lung and colorectal cancer. However, the relation between rs2735383 and susceptibility to breast cancer is not yet clear. Therefore, we genotyped rs2735383 in 1,170 familial non-BRCA1/2 breast cancer cases and 1,077 controls using PCR-based restriction fragment length polymorphism (RFLP-PCR) analysis, but found no association between rs2735383CC and breast cancer risk (OR = 1...
November 15, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27836394/pre-and-postoperative-neurocognitive-deficits-in-brain-tumor-patients-assessed-by-a-computer-based-screening-test
#8
Markus Hoffermann, Lukas Bruckmann, Kariem Mahdy Ali, Karla Zaar, Alexander Avian, Gord von Campe
Neurocognitive assessment becomes increasingly important in neuro-oncology. The presence and degree of neurocognitive deficits in patients with brain tumors appear to be important not only as outcome measures but also in treatment planning and as possible prognostic markers for tumor-progression. Common screening methods for neurocognitive deficits are often insufficient in uncovering subtle changes or harbor the risk of being observer-dependent and time-consuming. We present data of brain tumor patients screened by a computer-based neurocognitive assessment tool before and after surgery...
February 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27836010/inheritance-of-deleterious-mutations-at-both-brca1-and-brca2-in-an-international-sample-of-32-295-women
#9
Timothy R Rebbeck, Tara M Friebel, Nandita Mitra, Fei Wan, Stephanie Chen, Irene L Andrulis, Paraskevi Apostolou, Norbert Arnold, Banu K Arun, Daniel Barrowdale, Javier Benitez, Raanan Berger, Pascaline Berthet, Ake Borg, Saundra S Buys, Trinidad Caldes, Jonathan Carter, Jocelyne Chiquette, Kathleen B M Claes, Fergus J Couch, Cezary Cybulski, Mary B Daly, Miguel de la Hoya, Orland Diez, Susan M Domchek, Katherine L Nathanson, Katarzyna Durda, Steve Ellis, D Gareth Evans, Lenka Foretova, Eitan Friedman, Debra Frost, Patricia A Ganz, Judy Garber, Gord Glendon, Andrew K Godwin, Mark H Greene, Jacek Gronwald, Eric Hahnen, Emily Hallberg, Ute Hamann, Thomas V O Hansen, Evgeny N Imyanitov, Claudine Isaacs, Anna Jakubowska, Ramunas Janavicius, Katarzyna Jaworska-Bieniek, Esther M John, Beth Y Karlan, Bella Kaufman, KConFab Investigators, Ava Kwong, Yael Laitman, Christine Lasset, Conxi Lazaro, Jenny Lester, Niklas Loman, Jan Lubinski, Siranoush Manoukian, Gillian Mitchell, Marco Montagna, Susan L Neuhausen, Heli Nevanlinna, Dieter Niederacher, Robert L Nussbaum, Kenneth Offit, Edith Olah, Olufunmilayo I Olopade, Sue Kyung Park, Marion Piedmonte, Paolo Radice, Christine Rappaport-Fuerhauser, Matti A Rookus, Caroline Seynaeve, Jacques Simard, Christian F Singer, Penny Soucy, Melissa Southey, Dominique Stoppa-Lyonnet, Grzegorz Sukiennicki, Csilla I Szabo, Mariella Tancredi, Manuel R Teixeira, Soo-Hwang Teo, Mary Beth Terry, Mads Thomassen, Laima Tihomirova, Marc Tischkowitz, Amanda Ewart Toland, Aleksandra Toloczko-Grabarek, Nadine Tung, Elizabeth J van Rensburg, Danylo Villano, Shan Wang-Gohrke, Barbara Wappenschmidt, Jeffrey N Weitzel, Jamal Zidan, Kristin K Zorn, Lesley McGuffog, Douglas Easton, Georgia Chenevix-Trench, Antonis C Antoniou, Susan J Ramus
BACKGROUND: Most BRCA1 or BRCA2 mutation carriers have inherited a single (heterozygous) mutation. Transheterozygotes (TH) who have inherited deleterious mutations in both BRCA1 and BRCA2 are rare, and the consequences of transheterozygosity are poorly understood. METHODS: From 32,295 female BRCA1/2 mutation carriers, we identified 93 TH (0.3 %). "Cases" were defined as TH, and "controls" were single mutations at BRCA1 (SH1) or BRCA2 (SH2). Matched SH1 "controls" carried a BRCA1 mutation found in the TH "case"...
November 11, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27828437/1-khz-two-dimensional-coherent-anti-stokes-raman-scattering-2d-cars-for-gas-phase-thermometry
#10
Joseph D Miller, Mikhail N Slipchenko, Jason G Mance, Sukesh Roy, James R Gord
Two-dimensional gas-phase coherent anti-Stokes Raman scattering (2D-CARS) thermometry is demonstrated at 1 kHz in a heated jet. A hybrid femtosecond/picosecond CARS configuration is used in a two-beam phase-matching arrangement with a 100-femtosecond pump/Stokes pulse and a 107-picosecond probe pulse. The femtosecond pulse is generated using a mode-locked oscillator and regenerative amplifier that is synchronized to a separate picosecond oscillator and burst-mode amplifier. The CARS signal is spectrally dispersed in a custom imaging spectrometer and detected using a high-speed camera with image intensifier...
October 31, 2016: Optics Express
https://www.readbyqxmd.com/read/27828047/sensitivity-stability-and-precision-of-quantitative-ns-libs-based-fuel-air-ratio-measurements-for-methane-air-flames-at-1-11-bar
#11
Paul S Hsu, Mark Gragston, Yue Wu, Zhili Zhang, Anil K Patnaik, Johannes Kiefer, Sukesh Roy, James R Gord
Nanosecond laser-induced breakdown spectroscopy (ns-LIBS) is employed for quantitative local fuel-air (F/A) ratio (i.e., ratio of actual fuel-to-oxidizer mass over ratio of fuel-to-oxidizer mass at stoichiometry, measurements in well-characterized methane-air flames at pressures of 1-11 bar). We selected nitrogen and hydrogen atomic-emission lines at 568 nm and 656 nm, respectively, to establish a correlation between the line intensities and the F/A ratio. We have investigated the effects of laser-pulse energy, camera gate delay, and pressure on the sensitivity, stability, and precision of the quantitative ns-LIBS F/A ratio measurements...
October 1, 2016: Applied Optics
https://www.readbyqxmd.com/read/27826993/psychometric-evaluation-of-a-daily-gastro-oesophageal-reflux-disease-symptom-measure
#12
Peter Bytzer, Christina Reimer, Gary Smith, Milena D Anatchkova, Ray Hsieh, Joanne Wilkinson, S Jane Thomas, William R Lenderking
OBJECTIVE: The objective of this study was to evaluate the validity of the Heartburn Reflux Dyspepsia Questionnaire (HRDQ), a newly developed measure of gastro-oesophageal reflux disease (GORD) symptoms. Specifically, the HRDQ was developed for patients, who still experience symptoms with proton pump inhibitor (PPI) treatment. MATERIAL AND METHODS: The psychometric properties of HRDQ were evaluated based on data from two clinical trials of patients with GORD with a partial response to PPIs, one from the UK and one from Denmark and Germany...
March 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/27798629/a-viral-strategy-for-targeting-and-manipulating-interneurons-across-vertebrate-species
#13
Jordane Dimidschstein, Qian Chen, Robin Tremblay, Stephanie L Rogers, Giuseppe-Antonio Saldi, Lihua Guo, Qing Xu, Runpeng Liu, Congyi Lu, Jianhua Chu, Joshua S Grimley, Anne-Rachel Krostag, Ajamete Kaykas, Michael C Avery, Mohammad S Rashid, Myungin Baek, Amanda L Jacob, Gordon B Smith, Daniel E Wilson, Georg Kosche, Illya Kruglikov, Tomasz Rusielewicz, Vibhakar C Kotak, Todd M Mowery, Stewart A Anderson, Edward M Callaway, Jeremy S Dasen, David Fitzpatrick, Valentina Fossati, Michael A Long, Scott Noggle, John H Reynolds, Dan H Sanes, Bernardo Rudy, Guoping Feng, Gord Fishell
A fundamental impediment to understanding the brain is the availability of inexpensive and robust methods for targeting and manipulating specific neuronal populations. The need to overcome this barrier is pressing because there are considerable anatomical, physiological, cognitive and behavioral differences between mice and higher mammalian species in which it is difficult to specifically target and manipulate genetically defined functional cell types. In particular, it is unclear the degree to which insights from mouse models can shed light on the neural mechanisms that mediate cognitive functions in higher species, including humans...
December 2016: Nature Neuroscience
https://www.readbyqxmd.com/read/27796716/association-of-breast-cancer-risk-in-brca1-and-brca2-mutation-carriers-with-genetic-variants-showing-differential-allelic-expression-identification-of-a-modifier-of-breast-cancer-risk-at-locus-11q22-3
#14
Yosr Hamdi, Penny Soucy, Karoline B Kuchenbaeker, Tomi Pastinen, Arnaud Droit, Audrey Lemaçon, Julian Adlard, Kristiina Aittomäki, Irene L Andrulis, Adalgeir Arason, Norbert Arnold, Banu K Arun, Jacopo Azzollini, Anita Bane, Laure Barjhoux, Daniel Barrowdale, Javier Benitez, Pascaline Berthet, Marinus J Blok, Kristie Bobolis, Valérie Bonadona, Bernardo Bonanni, Angela R Bradbury, Carole Brewer, Bruno Buecher, Saundra S Buys, Maria A Caligo, Jocelyne Chiquette, Wendy K Chung, Kathleen B M Claes, Mary B Daly, Francesca Damiola, Rosemarie Davidson, Miguel De la Hoya, Kim De Leeneer, Orland Diez, Yuan Chun Ding, Riccardo Dolcetti, Susan M Domchek, Cecilia M Dorfling, Diana Eccles, Ros Eeles, Zakaria Einbeigi, Bent Ejlertsen, Christoph Engel, D Gareth Evans, Lidia Feliubadalo, Lenka Foretova, Florentia Fostira, William D Foulkes, George Fountzilas, Eitan Friedman, Debra Frost, Pamela Ganschow, Patricia A Ganz, Judy Garber, Simon A Gayther, Anne-Marie Gerdes, Gord Glendon, Andrew K Godwin, David E Goldgar, Mark H Greene, Jacek Gronwald, Eric Hahnen, Ute Hamann, Thomas V O Hansen, Steven Hart, John L Hays, Frans B L Hogervorst, Peter J Hulick, Evgeny N Imyanitov, Claudine Isaacs, Louise Izatt, Anna Jakubowska, Paul James, Ramunas Janavicius, Uffe Birk Jensen, Esther M John, Vijai Joseph, Walter Just, Katarzyna Kaczmarek, Beth Y Karlan, Carolien M Kets, Judy Kirk, Mieke Kriege, Yael Laitman, Maïté Laurent, Conxi Lazaro, Goska Leslie, Jenny Lester, Fabienne Lesueur, Annelie Liljegren, Niklas Loman, Jennifer T Loud, Siranoush Manoukian, Milena Mariani, Sylvie Mazoyer, Lesley McGuffog, Hanne E J Meijers-Heijboer, Alfons Meindl, Austin Miller, Marco Montagna, Anna Marie Mulligan, Katherine L Nathanson, Susan L Neuhausen, Heli Nevanlinna, Robert L Nussbaum, Edith Olah, Olufunmilayo I Olopade, Kai-Ren Ong, Jan C Oosterwijk, Ana Osorio, Laura Papi, Sue Kyung Park, Inge Sokilde Pedersen, Bernard Peissel, Pedro Perez Segura, Paolo Peterlongo, Catherine M Phelan, Paolo Radice, Johanna Rantala, Christine Rappaport-Fuerhauser, Gad Rennert, Andrea Richardson, Mark Robson, Gustavo C Rodriguez, Matti A Rookus, Rita Katharina Schmutzler, Nicolas Sevenet, Payal D Shah, Christian F Singer, Thomas P Slavin, Katie Snape, Johanna Sokolowska, Ida Marie Heeholm Sønderstrup, Melissa Southey, Amanda B Spurdle, Zsofia Stadler, Dominique Stoppa-Lyonnet, Grzegorz Sukiennicki, Christian Sutter, Yen Tan, Muy-Kheng Tea, Manuel R Teixeira, Alex Teulé, Soo-Hwang Teo, Mary Beth Terry, Mads Thomassen, Laima Tihomirova, Marc Tischkowitz, Silvia Tognazzo, Amanda Ewart Toland, Nadine Tung, Ans M W van den Ouweland, Rob B van der Luijt, Klaartje van Engelen, Elizabeth J van Rensburg, Raymonda Varon-Mateeva, Barbara Wappenschmidt, Juul T Wijnen, Timothy Rebbeck, Georgia Chenevix-Trench, Kenneth Offit, Fergus J Couch, Silje Nord, Douglas F Easton, Antonis C Antoniou, Jacques Simard
PURPOSE: Cis-acting regulatory SNPs resulting in differential allelic expression (DAE) may, in part, explain the underlying phenotypic variation associated with many complex diseases. To investigate whether common variants associated with DAE were involved in breast cancer susceptibility among BRCA1 and BRCA2 mutation carriers, a list of 175 genes was developed based of their involvement in cancer-related pathways. METHODS: Using data from a genome-wide map of SNPs associated with allelic expression, we assessed the association of ~320 SNPs located in the vicinity of these genes with breast and ovarian cancer risks in 15,252 BRCA1 and 8211 BRCA2 mutation carriers ascertained from 54 studies participating in the Consortium of Investigators of Modifiers of BRCA1/2...
January 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27789657/all-cause-and-cancer-specific-mortality-in-gord-in-a-population-based-cohort-study-the-hunt-study
#15
Eivind Ness-Jensen, Eivind Gottlieb-Vedi, Karl Wahlin, Jesper Lagergren
OBJECTIVE: Gastro-oesophageal reflux is a public health concern which could have associated oesophageal complications, including adenocarcinoma, and possibly also head-and-neck and lung cancers. The aim of this study was to test the hypothesis that reflux increases all-cause and cancer-specific mortalities in an unselected cohort. DESIGN: The Nord-Trøndelag health study (HUNT), a Norwegian population-based cohort study, was used to identify individuals with and without reflux in 1995-1997 and 2006-2008, with follow-up until 2014...
October 27, 2016: Gut
https://www.readbyqxmd.com/read/27782654/two-color-vibrational-femtosecond-fully-resonant-electronically-enhanced-cars-free-cars-of-gas-phase-nitric-oxide
#16
Hans U Stauffer, Sukesh Roy, Jacob B Schmidt, Paul J Wrzesinski, James R Gord
A resonantly enhanced, two-color, femtosecond time-resolved coherent anti-Stokes Raman scattering (CARS) approach is demonstrated and used to explore the nature of the frequency- and time-dependent signals produced by gas-phase nitric oxide (NO). Through careful selection of the input pulse wavelengths, this fully resonant electronically enhanced CARS (FREE-CARS) scheme allows rovibronic-state-resolved observation of time-dependent rovibrational wavepackets propagating on the vibrationally excited ground-state potential energy surface of this diatomic species...
September 28, 2016: Journal of Chemical Physics
https://www.readbyqxmd.com/read/27711798/towards-elucidating-the-photochemistry-of-the-sunscreen-filter-ethyl-ferulate-using-time-resolved-gas-phase-spectroscopy
#17
N D N Rodrigues, M Staniforth, J D Young, Y Peperstraete, N C Cole-Filipiak, J R Gord, P S Walsh, D M Hewett, T S Zwier, V G Stavros
Ultrafast time-resolved ion yield (TR-IY) and velocity map imaging spectroscopies are employed to reveal the relaxation dynamics after photoexcitation in ethyl 4-hydroxy-3-methoxycinnamate (ethyl ferulate, EF), an active ingredient in commercially available sunscreens. In keeping with a bottom-up strategy, the building blocks of EF, 2-methoxy-4-vinylphenol (MVP) and 4-hydroxy-3-methoxycinnamyl alcohol (coniferyl alcohol, ConA), were also studied to assist in our understanding of the dynamics of EF as we build up in molecular complexity...
December 16, 2016: Faraday Discussions
https://www.readbyqxmd.com/read/27711552/conformation-specific-spectroscopy-of-capped-gas-phase-aib-oligomers-tests-of-the-aib-residue-as-a-310-helix-former
#18
Joseph R Gord, Daniel M Hewett, Alicia O Hernandez-Castillo, Karl N Blodgett, Matthew C Rotondaro, Adalgisa Varuolo, Matthew A Kubasik, Timothy S Zwier
The conformational preferences of a series of capped peptides containing the helicogenic amino acid aminoisobutyric acid (Aib) (Z-Aib-OH, Z-(Aib)2-OMe, and Z-(Aib)4-OMe) are studied in the gas phase under expansion-cooled conditions. Aib oligomers are known to form 310-helical secondary structures in solution and in the solid phase. However, in the gas phase, accumulation of a macrodipole as the helix grows could inhibit helix stabilization. Implementing single-conformation IR spectroscopy in the NH stretch region, Z-Aib-OH and Z-(Aib)2-OMe are both observed to have minor conformations that exhibit dihedral angles consistent with the 310-helical portion of the Ramachandran map (ϕ, ψ = -57°, -30°), even though they lack sufficient backbone length to form 10-membered rings which are a hallmark of the developed 310-helix...
September 14, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27710788/lineage-is-a-poor-predictor-of-interneuron-positioning-within-the-forebrain
#19
Christian Mayer, Rachel C Bandler, Gord Fishell
This Matters Arising Response paper addresses the Sultan et al. (2016) Matters Arising paper, published concurrently in Neuron. Clonally related excitatory neurons maintain a coherent relationship following their specification and migration. Whether cortical interneurons behave similarly is a fundamental question in developmental neuroscience. In Mayer et al. (2015), we reported that sibling interneurons disperse over several millimeters, across functional and anatomical boundaries. This finding demonstrated that clonality is not predictive of an interneuron's ultimate circuit specificity...
October 5, 2016: Neuron
https://www.readbyqxmd.com/read/27694141/hypoxia-inducible-factor-2%C3%AE-plays-a-role-in-mediating-oesophagitis-in-gord
#20
Xiaofang Huo, Agoston T Agoston, Kerry B Dunbar, Daisha J Cipher, Xi Zhang, Chunhua Yu, Edaire Cheng, Qiuyang Zhang, Thai H Pham, Uttam K Tambar, Richard K Bruick, David H Wang, Robert D Odze, Stuart J Spechler, Rhonda F Souza
OBJECTIVE: In an earlier study wherein we induced acute reflux by interrupting proton pump inhibitor (PPI) therapy in patients with reflux oesophagitis (RO) healed by PPIs, we refuted the traditional concept that RO develops as an acid burn. The present study explored our alternative hypothesis that RO results from reflux-stimulated production of pro-inflammatory molecules mediated by hypoxia-inducible factors (HIFs). DESIGN: Using oesophageal biopsies taken from patients in our earlier study at baseline and at 1 and 2 weeks off PPIs, we immunostained for HIF-1α, HIF-2α and phospho-p65, and measured pro-inflammatory molecule mRNAs...
September 30, 2016: Gut
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