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https://www.readbyqxmd.com/read/28547590/perfusion-and-diffusion-mri-signatures-in-histologic-and-genetic-subtypes-of-who-grade-ii-iii-diffuse-gliomas
#1
Kevin Leu, Garrett A Ott, Albert Lai, Phioanh L Nghiemphu, Whitney B Pope, William H Yong, Linda M Liau, Timothy F Cloughesy, Benjamin M Ellingson
The value of perfusion and diffusion-weighted MRI in differentiating histological subtypes according to the 2007 WHO glioma classification scheme (i.e. astrocytoma vs. oligodendroglioma) and genetic subtypes according to the 2016 WHO reclassification (e.g. 1p/19q co-deletion and IDH1 mutation status) in WHO grade II and III diffuse gliomas remains controversial. In the current study, we describe unique perfusion and diffusion MR signatures between histological and genetic glioma subtypes. Sixty-five patients with 2007 histological designations (astrocytomas and oligodendrogliomas), 1p/19q status (+ = intact/- = co-deleted), and IDH1 mutation status (MUT/WT) were included in this study...
May 25, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28544795/joint-association-of-birth-weight-and-physical-activity-sedentary-behavior-with-obesity-in-children-ages-9-11-years-from-12-countries
#2
Yijuan Qiao, Tao Zhang, Hongyan Liu, Peter T Katzmarzyk, Jean-Philippe Chaput, Mikael Fogelholm, William D Johnson, Rebecca Kuriyan, Anura Kurpad, Estelle V Lambert, Carol Maher, José A R Maia, Victor Matsudo, Timothy Olds, Vincent Onywera, Olga L Sarmiento, Martyn Standage, Mark S Tremblay, Catrine Tudor-Locke, Pei Zhao, Gang Hu
OBJECTIVE: To examine the joint association of birth weight and physical activity/sedentary time with childhood obesity in 12 countries. METHODS: A cross-sectional study of 5,088 children aged 9 to 11 years was conducted. Birth weight was recalled by parents or guardians. Moderate-to-vigorous physical activity (MVPA) and sedentary behavior were objectively measured using accelerometry. RESULTS: The association of birth weight with the odds of obesity, central obesity, and high body fat was significant among children with either low MVPA or high sedentary time but not among children with either high MVPA or low sedentary time...
June 2017: Obesity
https://www.readbyqxmd.com/read/28542926/effect-of-spironolactone-on-exercise-tolerance-and-arterial-function-in-older-adults-with-heart-failure-with-preserved-ejection-fraction
#3
Bharathi Upadhya, William G Hundley, Peter H Brubaker, Timothy M Morgan, Kathryn P Stewart, Dalane W Kitzman
OBJECTIVES: To evaluate the effects of an aldosterone antagonist on exercise intolerance in older adults with heart failure and preserved ejection fraction (HFpEF). DESIGN: Randomized, placebo-controlled, double-blind trial. SETTING: Academic medical center, Winston-Salem, North Carolina. PARTICIPANTS: Older adults (N = 80, aged 71 ± 1; 80% female) with stable compensated HFpEF and controlled blood pressure (BP)...
May 19, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28540130/corpora-amylacea-mimicking-low-grade-glioma-and-manifesting-as-a-seizure-case-report
#4
Seung J Lee, Minsu Kim, Carlito Lagman, Timothy T Bui, William H Yong, Isaac Yang
BACKGROUND: Corpora amylacea (CA) are accumulations of polyglucosan bodies typically found in astrocytic foot processes, and rarely, can mimic neoplasm. CA accumulation has also been associated with seizure disorders. We report the first case of a histologically confirmed intracranial, intraparenchymal CA lesion mimicking a low-grade glioma and manifesting as a seizure. CASE DESCRIPTION: A 43-year-old man presented after a general tonic-clonic (GTC) seizure. Brain magnetic resonance imaging (MRI) revealed a small lesion in the right mesial temporal lobe with radiologic features of a low-grade glioma...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28535045/bet-bromodomain-inhibitors-with-one-step-synthesis-discovered-from-virtual-screen
#5
Alex M Ayoub, Laura M L Hawk, Ryan J Herzig, Jiewei Jiang, Andrea J Wisniewski, Clifford T Gee, Peiliang Zhao, Jin-Yi Zhu, Norbert Berndt, Nana K Offei-Addo, Thomas G Scott, Jun Qi, James E Bradner, Timothy R Ward, Ernst Schönbrunn, Gunda I Georg, William C K Pomerantz
Chemical inhibition of epigenetic regulatory proteins BrdT and Brd4 is emerging as a promising therapeutic strategy in contraception, cancer, and heart disease. We report an easily synthesized dihydropyridopyrmidine pan-BET inhibitor scaffold, which was uncovered via a virtual screen followed by testing in a fluorescence anisotropy assay. Dihydropyridpyimidine 3 was subjected to further characterization and is highly selective for the BET family of bromodomains. Structure-activity relationship data and ligand deconstruction highlight the importance of the substitution of the uracil moiety for potency and selectivity...
May 23, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28532924/standard-for-reporting-refractive-outcomes%C3%A2-of-intraocular-lens-based-refractive-surgery
#6
EDITORIAL
Dan Z Reinstein, Timothy J Archer, Sathish Srinivasan, Nick Mamalis, Thomas Kohnen, William J Dupps, J Bradley Randleman
No abstract text is available yet for this article.
April 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28532709/image-texture-features-predict-renal-function-decline-in-patients-with-autosomal-dominant-polycystic-kidney-disease
#7
Timothy L Kline, Panagiotis Korfiatis, Marie E Edwards, Kyongtae T Bae, Alan Yu, Arlene B Chapman, Michal Mrug, Jared J Grantham, Douglas Landsittel, William M Bennett, Bernard F King, Peter C Harris, Vicente E Torres, Bradley J Erickson
Magnetic resonance imaging (MRI) examinations provide high-resolution information about the anatomic structure of the kidneys and are used to measure total kidney volume (TKV) in patients with Autosomal Dominant Polycystic Kidney Disease (ADPKD). Height-adjusted TKV (HtTKV) has become the gold-standard imaging biomarker for ADPKD progression at early stages of the disease when estimated glomerular filtration rate (eGFR) is still normal. However, HtTKV does not take advantage of the wealth of information provided by MRI...
May 20, 2017: Kidney International
https://www.readbyqxmd.com/read/28528221/bronchopulmonary-dysplasia-and-perinatal-characteristics-predict-1-year-respiratory-outcomes-in-newborns-born-at-extremely-low-gestational-age-a-prospective-cohort-study
#8
Roberta L Keller, Rui Feng, Sara B DeMauro, Thomas Ferkol, William Hardie, Elizabeth E Rogers, Timothy P Stevens, Judith A Voynow, Scarlett L Bellamy, Pamela A Shaw, Paul E Moore
OBJECTIVE: To assess the utility of clinical predictors of persistent respiratory morbidity in extremely low gestational age newborns (ELGANs). STUDY DESIGN: We enrolled ELGANs (<29 weeks' gestation) at ≤7 postnatal days and collected antenatal and neonatal clinical data through 36 weeks' postmenstrual age. We surveyed caregivers at 3, 6, 9, and 12 months' corrected age to identify postdischarge respiratory morbidity, defined as hospitalization, home support (oxygen, tracheostomy, ventilation), medications, or symptoms (cough/wheeze)...
May 17, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28528142/per-and-polyfluoroalkyl-substances-pfas-in-american-red-cross-adult-blood-donors-2000-2015
#9
Geary W Olsen, David C Mair, Cleston C Lange, Laura M Harrington, Timothy R Church, Corinne L Goldberg, Ross M Herron, Hank Hanna, John B Nobiletti, Jorge A Rios, William K Reagen, Carol A Ley
In 2015, thirteen per- and polyfluoroalkyl substances (PFAS), including perfluorohexanesulfonate (PFHxS), perfluorooctanesulfonate (PFOS), perfluorooctanoate (PFOA), perfluorononanoate (PFNA), and perfluorodecanoate (PFDA) were analyzed in human plasma that was collected from a total of 616 American Red Cross male and female blood donors (ages 20-69) at 6 regional blood collection centers. Plasma samples were analyzed using a validated solvent precipitation-isotope dilution direction-liquid chromatography tandem mass spectrometry method...
May 17, 2017: Environmental Research
https://www.readbyqxmd.com/read/28525990/transversions-have-larger-regulatory-effects-than-transitions
#10
Cong Guo, Ian C McDowell, Michael Nodzenski, Denise M Scholtens, Andrew S Allen, William L Lowe, Timothy E Reddy
BACKGROUND: Transversions (Tv's) are more likely to alter the amino acid sequence of proteins than transitions (Ts's), and local deviations in the Ts:Tv ratio are indicative of evolutionary selection on genes. Whether the two different types of mutations have different effects in non-protein-coding sequences remains unknown. Genetic variants primarily impact gene expression by disrupting the binding of transcription factors (TFs) and other DNA-binding proteins. Because Tv's cause larger changes in the shape of a DNA backbone, we hypothesized that Tv's would have larger impacts on TF binding and gene expression...
May 19, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28525560/activity-dependent-gene-expression-in-the-mammalian-olfactory-epithelium
#11
Qiang Wang, William B Titlow, Declan A McClintock, Arnold J Stromberg, Timothy S McClintock
Activity-dependent processes are important to olfactory sensory neurons (OSNs) in several ways, such as cell survival and the specificity of axonal convergence. The identification of activity-dependent mRNAs has contributed to our understanding of OSN axon convergence, but has revealed surprisingly little about other processes. Published studies of activity-dependent mRNAs in olfactory mucosae overlap poorly, but by combining these agreements with meta-analysis of existing data we identify 443 mRNAs that respond to methods that alter OSN activity...
May 19, 2017: Chemical Senses
https://www.readbyqxmd.com/read/28522532/higher-predation-risk-for-insect-prey-at-low-latitudes-and-elevations
#12
Tomas Roslin, Bess Hardwick, Vojtech Novotny, William K Petry, Nigel R Andrew, Ashley Asmus, Isabel C Barrio, Yves Basset, Andrea Larissa Boesing, Timothy C Bonebrake, Erin K Cameron, Wesley Dáttilo, David A Donoso, Pavel Drozd, Claudia L Gray, David S Hik, Sarah J Hill, Tapani Hopkins, Shuyin Huang, Bonny Koane, Benita Laird-Hopkins, Liisa Laukkanen, Owen T Lewis, Sol Milne, Isaiah Mwesige, Akihiro Nakamura, Colleen S Nell, Elizabeth Nichols, Alena Prokurat, Katerina Sam, Niels M Schmidt, Alison Slade, Victor Slade, Alžběta Suchanková, Tiit Teder, Saskya van Nouhuys, Vigdis Vandvik, Anita Weissflog, Vital Zhukovich, Eleanor M Slade
Biotic interactions underlie ecosystem structure and function, but predicting interaction outcomes is difficult. We tested the hypothesis that biotic interaction strength increases toward the equator, using a global experiment with model caterpillars to measure predation risk. Across an 11,660-kilometer latitudinal gradient spanning six continents, we found increasing predation toward the equator, with a parallel pattern of increasing predation toward lower elevations. Patterns across both latitude and elevation were driven by arthropod predators, with no systematic trend in attack rates by birds or mammals...
May 19, 2017: Science
https://www.readbyqxmd.com/read/28520615/increased-risk-of-myocardial-infarction-in-hiv-infected-individuals-in-north-america-compared-to-the-general-population
#13
Daniel R Drozd, Mari M Kitahata, Keri N Althoff, Jinbing Zhang, Stephen J Gange, Sonia Napravnik, Greer A Burkholder, William C Mathews, Michael J Silverberg, Timothy R Sterling, Susan R Heckbert, Matthew J Budoff, Stephen Van Rompaey, Joseph A C Delaney, Cherise Wong, Weiqun Tong, Frank J Palella, Richard A Elion, Jeffrey N Martin, John T Brooks, Lisa P Jacobson, Joseph J Eron, Amy C Justice, Matthew S Freiberg, Daniel B Klein, Wendy S Post, Michael S Saag, Richard D Moore, Heidi M Crane
BACKGROUND: Previous studies of cardiovascular disease (CVD) among HIV-infected individuals have been limited by the inability to validate and differentiate atherosclerotic type 1 myocardial infarctions (T1MIs) from other events. We sought to define the incidence of T1MIs and risk attributable to traditional and HIV-specific factors among participants in the North American AIDS Cohort Collaboration on Research and Design (NA-ACCORD), and compare adjusted incidence rates to the general population Atherosclerosis Risk in Communities (ARIC) cohort...
May 17, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28515846/passive-expansion-of-sub-maximally-dilated-transjugular-intrahepatic-portosystemic-shunts-and-assessment-of-clinical-outcomes
#14
Michael C Hsu, Charles N Weber, S William Stavropoulos, Timothy W Clark, Scott O Trerotola, Richard D Shlansky-Goldberg, Michael C Soulen, Gregory J Nadolski
AIM: To assess for passive expansion of sub-maximally dilated transjugular intrahepatic portosystemic shunts (TIPS) and compare outcomes with maximally dilated TIPS. METHODS: Polytetrafluoroethylene covered TIPS (Viatorr) from July 2002 to December 2013 were retrospectively reviewed at two hospitals in a single institution. Two hundred and thirty patients had TIPS maximally dilated to 10 mm (mTIPS), while 43 patients who were at increased risk for hepatic encephalopathy (HE), based on clinical evaluation or low pre-TIPS portosystemic gradient (PSG), had 10 mm TIPS sub-maximally dilated to 8 mm (smTIPS)...
April 28, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28514440/extreme-hydrothermal-conditions-at-an-active-plate-bounding-fault
#15
Rupert Sutherland, John Townend, Virginia Toy, Phaedra Upton, Jamie Coussens, Michael Allen, Laura-May Baratin, Nicolas Barth, Leeza Becroft, Carolin Boese, Austin Boles, Carolyn Boulton, Neil G R Broderick, Lucie Janku-Capova, Brett M Carpenter, Bernard Célérier, Calum Chamberlain, Alan Cooper, Ashley Coutts, Simon Cox, Lisa Craw, Mai-Linh Doan, Jennifer Eccles, Dan Faulkner, Jason Grieve, Julia Grochowski, Anton Gulley, Arthur Hartog, Jamie Howarth, Katrina Jacobs, Tamara Jeppson, Naoki Kato, Steven Keys, Martina Kirilova, Yusuke Kometani, Rob Langridge, Weiren Lin, Timothy Little, Adrienn Lukacs, Deirdre Mallyon, Elisabetta Mariani, Cécile Massiot, Loren Mathewson, Ben Melosh, Catriona Menzies, Jo Moore, Luiz Morales, Chance Morgan, Hiroshi Mori, Andre Niemeijer, Osamu Nishikawa, David Prior, Katrina Sauer, Martha Savage, Anja Schleicher, Douglas R Schmitt, Norio Shigematsu, Sam Taylor-Offord, Damon Teagle, Harold Tobin, Robert Valdez, Konrad Weaver, Thomas Wiersberg, Jack Williams, Nick Woodman, Martin Zimmer
Temperature and fluid pressure conditions control rock deformation and mineralization on geological faults, and hence the distribution of earthquakes. Typical intraplate continental crust has hydrostatic fluid pressure and a near-surface thermal gradient of 31 ± 15 degrees Celsius per kilometre. At temperatures above 300-450 degrees Celsius, usually found at depths greater than 10-15 kilometres, the intra-crystalline plasticity of quartz and feldspar relieves stress by aseismic creep and earthquakes are infrequent...
May 17, 2017: Nature
https://www.readbyqxmd.com/read/28514229/an-open-source-wireless-capable-miniature-microscope-system
#16
William A Liberti, L Nathan Perkins, Daniel P Leman, Timothy J Gardner
OBJECTIVE: Fluorescence imaging through head-mounted microscopes in freely behaving animals is becoming a standard method to study neural circuit function. Flexible, open-source designs are needed to spur evolution of the method. APPROACH: We describe a miniature microscope for single-photon fluorescence imaging in freely behaving animals. The device is made from 3D printed parts and off-the-shelf components. These microscopes weigh less than 1.8 g, can be configured to image a variety of fluorophores, and can be used wirelessly or in conjunction with active commutators...
May 17, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28510679/effect-of-intra-articular-triamcinolone-vs-saline-on-knee-cartilage-volume-and-pain-in-patients-with-knee-osteoarthritis-a-randomized-clinical-trial
#17
Timothy E McAlindon, Michael P LaValley, William F Harvey, Lori Lyn Price, Jeffrey B Driban, Ming Zhang, Robert J Ward
Importance: Synovitis is common and is associated with progression of structural characteristics of knee osteoarthritis. Intra-articular corticosteroids could reduce cartilage damage associated with synovitis but might have adverse effects on cartilage and periarticular bone. Objective: To determine the effects of intra-articular injection of 40 mg of triamcinolone acetonide every 3 months on progression of cartilage loss and knee pain. Design, Setting, and Participants: Two-year, randomized, placebo-controlled, double-blind trial of intra-articular triamcinolone vs saline for symptomatic knee osteoarthritis with ultrasonic features of synovitis in 140 patients...
May 16, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28509730/american-college-of-critical-care-medicine-clinical-practice-parameters-for-hemodynamic-support-of-pediatric-and-neonatal-septic-shock
#18
Alan L Davis, Joseph A Carcillo, Rajesh K Aneja, Andreas J Deymann, John C Lin, Trung C Nguyen, Regina S Okhuysen-Cawley, Monica S Relvas, Ranna A Rozenfeld, Peter W Skippen, Bonnie J Stojadinovic, Eric A Williams, Tim S Yeh, Fran Balamuth, Joe Brierley, Allan R de Caen, Ira M Cheifetz, Karen Choong, Edward Conway, Timothy Cornell, Allan Doctor, Marc-Andre Dugas, Jonathan D Feldman, Julie C Fitzgerald, Heidi R Flori, James D Fortenberry, Ana Lia Graciano, Bruce M Greenwald, Mark W Hall, Yong Yun Han, Lynn J Hernan, Jose E Irazuzta, Elizabeth Iselin, Elise W van der Jagt, Howard E Jeffries, Saraswati Kache, Chhavi Katyal, Niranjan Tex Kissoon, Alexander A Kon, Martha C Kutko, Graeme MacLaren, Timothy Maul, Renuka Mehta, Fola Odetola, Kristine Parbuoni, Raina Paul, Mark J Peters, Suchitra Ranjit, Karin E Reuter-Rice, Eduardo J Schnitzler, Halden F Scott, Adalberto Torres, Jacki Weingarten-Abrams, Scott L Weiss, Jerry J Zimmerman, Aaron L Zuckerberg
OBJECTIVES: The American College of Critical Care Medicine provided 2002 and 2007 guidelines for hemodynamic support of newborn and pediatric septic shock. Provide the 2014 update of the 2007 American College of Critical Care Medicine "Clinical Guidelines for Hemodynamic Support of Neonates and Children with Septic Shock." DESIGN: Society of Critical Care Medicine members were identified from general solicitation at Society of Critical Care Medicine Educational and Scientific Symposia (2006-2014)...
June 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28506776/mindfulness-is-associated-with-treatment-response-from-non-pharmacological-exercise-interventions-in-knee-osteoarthritis
#19
Augustine C Lee, William F Harvey, Lori Lyn Price, Xingyi Han, Jeffrey B Driban, John B Wong, Mei Chung, Timothy E McAlindon, Chenchen Wang
OBJECTIVE: To examine the association between baseline mindfulness and response from exercise interventions in knee osteoarthritis (OA). DESIGN: Cohort Study; Responder analysis of a clinical trial subset SETTING: Urban tertiary care academic hospital PARTICIPANTS: 86 participants with symptomatic, radiographic knee OA (mean age, 60 years; 74% female; 48% white) INTERVENTIONS: 12 weeks (twice per week) of Tai Chi or Physical Therapy exercise MAIN OUTCOME MEASURE(S): Treatment response was defined using Osteoarthritis Research Society International criteria indicating meaningful improvements in the Western Ontario and McMaster Osteoarthritis Index (WOMAC) pain, function, or Patient Global Assessment scores...
May 12, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28506538/epitope-specific-immunotherapy-targeting-cd4-positive-t-cells-in-coeliac-disease-two-randomised-double-blind-placebo-controlled-phase-1-studies
#20
Gautam Goel, Tim King, A James Daveson, Jane M Andrews, Janakan Krishnarajah, Richard Krause, Gregor J E Brown, Ronald Fogel, Charles F Barish, Roger Epstein, Timothy P Kinney, Philip B Miner, Jason A Tye-Din, Adam Girardin, Juha Taavela, Alina Popp, John Sidney, Markku Mäki, Kaela E Goldstein, Patrick H Griffin, Suyue Wang, John L Dzuris, Leslie J Williams, Alessandro Sette, Ramnik J Xavier, Ludvig M Sollid, Bana Jabri, Robert P Anderson
BACKGROUND: A gluten-free diet is the only means to manage coeliac disease, a permanent immune intolerance to gluten. We developed a therapeutic vaccine, Nexvax2, designed to treat coeliac disease. Nexvax2 is an adjuvant-free mix of three peptides that include immunodominant epitopes for gluten-specific CD4-positive T cells. The vaccine is intended to engage and render gluten-specific CD4-positive T cells unresponsive to further antigenic stimulation. We assessed the safety and pharmacodynamics of the vaccine in patients with coeliac disease on a gluten-free diet...
May 11, 2017: Lancet. Gastroenterology & Hepatology
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