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https://www.readbyqxmd.com/read/27921069/reaching-200-ps-timing-resolution-in-a-time-of-flight-and-depth-of-interaction-positron-emission-tomography-detector-using-phosphor-coated-crystals-and-high-density-silicon-photomultipliers
#1
Sun Il Kwon, Alessandro Ferri, Alberto Gola, Eric Berg, Claudio Piemonte, Simon R Cherry, Emilie Roncali
Current research in the field of positron emission tomography (PET) focuses on improving the sensitivity of the scanner with thicker detectors, extended axial field-of-view, and time-of-flight (TOF) capability. These create the need for depth-of-interaction (DOI) encoding to correct parallax errors. We have proposed a method to encode DOI using phosphor-coated crystals. Our initial work using photomultiplier tubes (PMTs) demonstrated the possibilities of the proposed method, however, a major limitation of PMTs for this application is poor quantum efficiency in yellow light, corresponding to the wavelengths of the converted light by the phosphor coating...
October 2016: Journal of Medical Imaging
https://www.readbyqxmd.com/read/27920665/multiple-single-unit-long-term-tracking-on-organotypic-hippocampal-slices-using-high-density-microelectrode-arrays
#2
Wei Gong, Jure Senčar, Douglas J Bakkum, David Jäckel, Marie Engelene J Obien, Milos Radivojevic, Andreas R Hierlemann
A novel system to cultivate and record from organotypic brain slices directly on high-density microelectrode arrays (HD-MEA) was developed. This system allows for continuous recording of electrical activity of specific individual neurons at high spatial resolution while monitoring at the same time, neuronal network activity. For the first time, the electrical activity patterns of single neurons and the corresponding neuronal network in an organotypic hippocampal slice culture were studied during several consecutive weeks at daily intervals...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27920145/three-small-receptive-field-ganglion-cells-in-the-mouse-retina-are-distinctly-tuned-to-size-speed-and-object-motion
#3
Jason Jacoby, Gregory W Schwartz
: Retinal ganglion cells (RGCs) are frequently divided into functional types by their ability to extract and relay specific features from a visual scene, such as the capacity to discern local or global motion, direction of motion, stimulus orientation, contrast or uniformity, or the presence of large or small objects. Here we introduce three previously uncharacterized, non-direction selective ON-OFF RGC types that represent a distinct set of feature detectors in the mouse retina. The three high definition (HD) RGCs possess small receptive field (RF) centers and strong surround suppression...
December 5, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27919633/greater-activation-of-peripheral-t-follicular-helper-cells-following-high-dose-influenza-vaccine-in-older-adults-forecasts-seroconversion
#4
Mark A Pilkinton, Katherine J Nicholas, Christian M Warren, Rita M Smith, Sandra M Yoder, H Keipp Talbot, Spyros A Kalams
BACKGROUND: Influenza related morbidity and mortality disproportionately impacts older adults. The serologic response to vaccine is diminished in older adults; however, high dose inactivated influenza vaccine (HD IIV) has shown improved rates of seroconversion compared to standard dose (SD IIV). We hypothesize this may be due to the superior ability of high dose vaccine to activate T follicular helper (Tfh) cells and provide B cell dependent T cell help. METHODS: We measured peripheral Tfh (pTfh) activation in 50 community dwelling adults 65years or older who were randomly assigned to receive either the HD IIV or SD IIV...
December 2, 2016: Vaccine
https://www.readbyqxmd.com/read/27918939/the-shady-side-of-leaf-development-the-role-of-the-revoluta-kanadi1-module-in-leaf-patterning-and-auxin-mediated-growth-promotion
#5
REVIEW
Paz Merelo, Esther Botterweg Paredes, Marcus G Heisler, Stephan Wenkel
Leaves are present in all land plants and are specialized organs for light harvesting. They arise at the flanks of the shoot apical meristem (SAM), and develop into lamina structures that exhibit adaxial/abaxial (upper/lower side of the leaf) polarity. At the molecular level, an intricate regulatory network determines ad-/abaxial polarity in Arabidopsis thaliana leaves, where the Class III Homeodomain Leucine Zipper (HD-ZIPIII) and KANADI (KAN) proteins are key mediators. The HD-ZIPIII REVOLUTA (REV) is expressed in the adaxial domain of lateral organs, whereas KAN1 is involved in abaxial differentiation...
December 2, 2016: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/27918851/influence-of-a-100-m-simulated-in-water-rescue-on-cardiopulmonary-parameters
#6
Ana Sousa, Ricardo J Fernandes, Núria Rodríguez, J Arturo Abraldes
OBJECTIVE: Cardiopulmonary resuscitation (CPR) after a drowning episode is performed under fatigue conditions. However, the characterization of CPR in this context is still unknown. Our purpose was to investigate the effect of a 100-m simulated in-water rescue on CPR and physiological parameters in trained certified lifeguards. METHODS: Thirty trained certified lifeguards (age 24.6 ± 3.8 yrs; height 178.2 ± 7.4 cm and weight 76.9 ± 10.6 kg) completed two protocols using an adult manikin: (i) 4-min CPR after 4-min baseline conditions (CPR), and (ii) 4-min CPR after a 100-m simulated in-water rescue in the sea (CPR Rescue), both with a compression-ventilation ratio of 30:2...
December 5, 2016: Prehospital Emergency Care
https://www.readbyqxmd.com/read/27917451/reversal-learning-reveals-cognitive-deficits-and-altered-prediction-error-encoding-in-the-ventral-striatum-in-huntington-s-disease
#7
Katharina Nickchen, Rebecca Boehme, Maria Del Mar Amador, Thomas D Hälbig, Katharina Dehnicke, Patricia Panneck, Joachim Behr, Konstantin Prass, Andreas Heinz, Lorenz Deserno, Florian Schlagenhauf, Josef Priller
Huntington's disease (HD) is an autosomal dominant neurodegenerative condition characterized by a triad of movement disorder, neuropsychiatric symptoms and cognitive deficits. The striatum is particularly vulnerable to the effects of mutant huntingtin, and cell loss can already be found in presymptomatic stages. Since the striatum is well known for its role in reinforcement learning, we hypothesized to find altered behavioral and neural responses in HD patients in a probabilistic reinforcement learning task performed during functional magnetic resonance imaging...
December 5, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27917304/quality-of-life-of-cypriot-patients-suffering-with-huntington-s-disease
#8
Eleni Varda, Christiana A Demetriou, Alexandros Heraclides, Yiolanda P Christou, Eleni Zamba-Papanicolaou
INTRODUCTION: Huntington's disease (HD) has profound motor, behavioural and cognitive symptoms. Despite the enormous burden of this disease on the quality of life (QoL) of patients and their families, there is very limited evidence on this topic. Considering the severity of HD patients, and the high prevalence in Cyprus more studies are needed to assess QoL among Cypriot patients, in order to improve our knowledge about their living conditions and to assist the management of this condition...
October 25, 2016: PLoS Currents
https://www.readbyqxmd.com/read/27916909/dysregulated-homeostasis-of-acetylcholine-levels-in-immune-cells-of-rr-multiple-sclerosis-patients
#9
Maria Di Bari, Marcella Reale, Marta Di Nicola, Viviana Orlando, Sabrina Galizia, Italo Porfilio, Erica Costantini, Chiara D'Angelo, Serena Ruggieri, Stefano Biagioni, Claudio Gasperini, Ada Maria Tata
Multiple sclerosis (MS) is characterized by pro-inflammatory cytokine production. Acetylcholine (ACh) contributes to the modulation of central and peripheral inflammation. We studied the homeostasis of the cholinergic system in relation to cytokine levels in immune cells and sera of relapsing remitting-MS (RR-MS) patients. We demonstrated that lower ACh levels in serum of RR-MS patients were inversely correlated with the increased activity of the hydrolyzing enzymes acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE)...
November 30, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27916626/impact-of-sequencing-targeted-therapies-with-high-dose-interleukin-2-immunotherapy-an-analysis-of-outcome-and-survival-of-patients-with-metastatic-renal-cell-carcinoma-from-an-on-going-observational-il-2-clinical-trial-proclaim-sm
#10
Joseph I Clark, Michael K K Wong, Howard L Kaufman, Gregory A Daniels, Michael A Morse, David F McDermott, Sanjiv S Agarwala, Lionel D Lewis, John H Stewart, Ulka Vaishampayan, Brendan Curti, René Gonzalez, Jose Lutzky, Venkatesh Rudraptna, Lee D Cranmer, Joanne M Jeter, Ralph J Hauke, Gerald Miletello, Mohammed M Milhem, Asim Amin, John M Richart, Mayer Fishman, Sigrun Hallmeyer, Sapna P Patel, Peter Van Veldhuizen, Neeraj Agarwal, Bret Taback, Jonathan S Treisman, Marc S Ernstoff, Jessica C Perritt, Hong Hua, Tharak B Rao, Janice P Dutcher, Sandra Aung
BACKGROUND: This analysis describes the outcome for patients who received targeted therapy (TT) prior to or following high-dose interleukin-2 (HD IL-2). PATIENTS AND METHODS: Patients with renal cell carcinoma (n = 352) receiving HD IL-2 were enrolled in Proleukin(R) Observational Study to Evaluate the Treatment Patterns and Clinical Response in Malignancy (PROCLAIM(SM)) beginning in 2011. Statistical analyses were performed using datasets as of September 24, 2015...
October 29, 2016: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/27916455/phosphodiesterase-10a-inhibition-improves-cortico-basal-ganglia-function-in-huntington-s-disease-models
#11
Vahri Beaumont, Sheng Zhong, Hai Lin, WenJin Xu, Amyaouch Bradaia, Esther Steidl, Melanie Gleyzes, Kristian Wadel, Bruno Buisson, Fernando E Padovan-Neto, Shreaya Chakroborty, Karen M Ward, John F Harms, Jose Beltran, Mei Kwan, Afshin Ghavami, Jenny Häggkvist, Miklós Tóth, Christer Halldin, Andrea Varrone, Christoph Schaab, J Nikolaj Dybowski, Sarah Elschenbroich, Kimmo Lehtimäki, Taneli Heikkinen, Larry Park, James Rosinski, Ladislav Mrzljak, Daniel Lavery, Anthony R West, Christopher J Schmidt, Margaret M Zaleska, Ignacio Munoz-Sanjuan
Huntington's disease (HD) symptoms are driven to a large extent by dysfunction of the basal ganglia circuitry. HD patients exhibit reduced striatal phoshodiesterase 10 (PDE10) levels. Using HD mouse models that exhibit reduced PDE10, we demonstrate the benefit of pharmacologic PDE10 inhibition to acutely correct basal ganglia circuitry deficits. PDE10 inhibition restored corticostriatal input and boosted cortically driven indirect pathway activity. Cyclic nucleotide signaling is impaired in HD models, and PDE10 loss may represent a homeostatic adaptation to maintain signaling...
November 25, 2016: Neuron
https://www.readbyqxmd.com/read/27916192/long-term-outcome-of-bowel-function-for-110-consecutive-cases-of-hirschsprung-s-disease-comparison-of-the-abdominal-approach-with-transanal-approach-more-than-30years-in-a-single-institution-is-the-transanal-approach-truly-beneficial-for-bowel-function
#12
Shun Onishi, Kazuhiko Nakame, Kouji Yamada, Waka Yamada, Takafumi Kawano, Motoi Mukai, Tatsuru Kaji, Satoshi Ieiri
BACKGROUND: We compared the long-term outcomes of the bowel function (BF) in Hirschsprung's disease (HD) patients who underwent transanal endorectal pull-through (TA) with those who underwent the Soave-Denda (SD) procedure. METHODS: Patient data were collected from 1984 to 2015 from 110 HD patients who underwent definitive diagnosis and operation. The follow-up data were analyzed retrospectively. BF was evaluated according to the evacuation score (ES) of the Japan Society of Anorectal Malformation Study Group at 3, 5, 7, 9, and 11years of age...
December 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/27915246/neutrophil-dependent-pentraxin-3-and-reactive-oxygen-species-production-modulate-endothelial-dysfunction-in-haemodialysis-patients
#13
Maria Pia dell'Oglio, Simona Simone, Marco Ciccone, Roberto Corciulo, Michele Gesualdo, Annapaola Zito, Francesca Cortese, Giuseppe Castellano, Margherita Gigante, Loreto Gesualdo, Giuseppe Grandaliano, Giovanni Battista Pertosa
BACKGROUND: The aim of this study was to investigate neutrophil activation and its role in long pentraxin-3 (PTX3) release and oxidative stress generation during haemodialysis (HD) and to correlate neutrophil PTX3 and oxidant expression with endothelial dysfunction. METHODS: Forty-seven uraemic patients on stable HD, 12 healthy subjects and 15 patients with congestive heart failure (New York Heart Association classes III and IV) were enrolled. Neutrophil PTX3 protein expression was evaluated by confocal microscopy...
December 3, 2016: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/27914476/lidocaine-relaxation-in-isolated-rat-aortic-rings-is-enhanced-by-endothelial-removal-possible-role-of-kv-katp-channels-and-a2a-receptor-crosstalk
#14
Aryadi Arsyad, Geoffrey P Dobson
BACKGROUND: Lidocaine is an approved local anesthetic and Class 1B antiarrhythmic with a number of ancillary properties. Our aim was to investigate lidocaine's vasoreactivity properties in intact versus denuded rat thoracic aortic rings, and the effect of inhibitors of nitric oxide (NO), prostenoids, voltage-dependent Kv and KATP channels, membrane Na(+)/K(+) pump, and A2a and A2b receptors. METHODS: Aortic rings were harvested from adult male Sprague Dawley rats and equilibrated in an organ bath containing oxygenated, modified Krebs-Henseleit solution, pH 7...
December 3, 2016: BMC Anesthesiology
https://www.readbyqxmd.com/read/27914132/associations-between-soluble-receptor-for-advanced-glycation-end-products-srage-and-s100a12-en-rage-with-mortality-in-long-term-hemodialysis-patients
#15
Eul Sik Jung, Wookyung Chung, Ae Jin Kim, Han Ro, Jae Hyun Chang, Hyun Hee Lee, Ji Yong Jung
Hemodialysis (HD) patients experience vascular calcification, ultimately leading to high mortality rates. Previously, we reported associations between soluble receptor for advanced glycation end products (sRAGEs) and extracellular newly identified RAGE-binding protein S100A12 (EN-RAGE) and vascular calcification. Here, we extended our observations, investigating whether these biomarkers may be useful for predicting cardiovascular morbidity and mortality in these subjects. Thus, we evaluated the relationship between sRAGE and S100A12 and mortality in long-term HD patients...
January 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/27913887/transcriptomics-analysis-of-hulless-barley-during-grain-development-with-a-focus-on-starch-biosynthesis
#16
Yawei Tang, Xingquan Zeng, Yulin Wang, Lijun Bai, Qijun Xu, Zexiu Wei, Hongjun Yuan, Tashi Nyima
Hulless barley, with its unique nutritional value and potential health benefits, has increasingly attracted attentions in recent years. However, the transcription dynamics during hulless barley grain development is not well understood. In the present study, we investigated the transcriptome changes during barley grain development using Illumina paired-end RNA-sequencing. Two datasets of the developing grain transcriptomes from two barley landraces with the differential seed starch synthesis traits were generated, and comparative transcriptome approach in both genotypes was performed...
December 2, 2016: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27913695/a-randomized-double-blind-placebo-controlled-trial-of-coenzyme-q10-in-huntington-disease
#17
Andrew McGarry, Michael McDermott, Karl Kieburtz, Elisabeth A de Blieck, Flint Beal, Karen Marder, Christopher Ross, Ira Shoulson, Peter Gilbert, William M Mallonee, Mark Guttman, Joanne Wojcieszek, Rajeev Kumar, Mark S LeDoux, Mary Jenkins, H Diana Rosas, Martha Nance, Kevin Biglan, Peter Como, Richard M Dubinsky, Kathleen M Shannon, Padraig O'Suilleabhain, Kelvin Chou, Francis Walker, Wayne Martin, Vicki L Wheelock, Elizabeth McCusker, Joseph Jankovic, Carlos Singer, Juan Sanchez-Ramos, Burton Scott, Oksana Suchowersky, Stewart A Factor, Donald S Higgins, Eric Molho, Fredy Revilla, John N Caviness, Joseph H Friedman, Joel S Perlmutter, Andrew Feigin, Karen Anderson, Ramon Rodriguez, Nikolaus R McFarland, Russell L Margolis, Eric S Farbman, Lynn A Raymond, Valerie Suski, Sandra Kostyk, Amy Colcher, Lauren Seeberger, Eric Epping, Sherali Esmail, Nancy Diaz, Wai Lun Alan Fung, Alan Diamond, Samuel Frank, Philip Hanna, Neal Hermanowicz, Leon S Dure, Merit Cudkowicz
OBJECTIVE: To test the hypothesis that chronic treatment of early-stage Huntington disease (HD) with high-dose coenzyme Q10 (CoQ) will slow the progressive functional decline of HD. METHODS: We performed a multicenter randomized, double-blind, placebo-controlled trial. Patients with early-stage HD (n = 609) were enrolled at 48 sites in the United States, Canada, and Australia from 2008 to 2012. Patients were randomized to receive either CoQ 2,400 mg/d or matching placebo, then followed for 60 months...
December 2, 2016: Neurology
https://www.readbyqxmd.com/read/27913634/comparative-analysis-highlights-variable-genome-content-of-wheat-rusts-and-divergence-of-the-mating-loci
#18
Christina A Cuomo, Guus Bakkeren, Hala Badr Khalil, Vinay Panwar, David Joly, Rob Linning, Sharadha Sakthikumar, Xiao Song, Xian Adiconis, Lin Fan, Jonathan M Goldberg, Joshua Z Levin, Sarah Young, Qiandong Zeng, Yehoshua Anikster, Myron Bruce, Meinan Wang, Chuntao Yin, Brent McCallum, Les J Szabo, Scot Hulbert, Xiaming Chen, John P Fellers
Three members of the Puccinia genus, P. triticina (Pt), P. striiformis f.sp. tritici (Pst), and P. graminis f.sp. tritici (Pgt), cause the most common and often most significant foliar diseases of wheat. While similar in biology and life cycle, each species is uniquely adapted and specialized. The genomes of Pt and Pst were sequenced and compared to that of Pgt to identify common and distinguishing gene content, to determine gene variation among wheat rust pathogens, other rust fungi and basidiomycetes, and to identify genes of significance for infection...
December 2, 2016: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/27913290/early-and-brain-region-specific-decrease-of-de-novo-cholesterol-biosynthesis-in-huntington-s-disease-a-cross-validation-study-in-q175-knock-in-mice
#19
Mahalakshmi Shankaran, Eleonora Di Paolo, Valerio Leoni, Claudio Caccia, Costanza Ferrari Bardile, Hussein Mohammed, Stefano Di Donato, Seung Kwak, Deanna Marchionini, Scott Turner, Elena Cattaneo, Marta Valenza
Cholesterol precursors and cholesterol levels are reduced in brain regions of Huntington's disease (HD) mice. Here we quantified the rate of in vivo de novo cholesterol biosynthesis in the HD brain. Samples from different brain regions and blood of the heterozygous knock-in mouse model carrying 175 CAG repeats (Q175) at different phenotypic stages were processed independently by two research units to quantify cholesterol synthesis rate by (2)H2O labeling and measure the concentrations of lathosterol, cholesterol and its brain-specific cholesterol catabolite 24-hydroxy-cholesterol (24OHC) by isotope dilution mass spectrometry...
November 30, 2016: Neurobiology of Disease
https://www.readbyqxmd.com/read/27913281/beyond-emotion-recognition-deficits-a-theory-guided-analysis-of-emotion-processing-in-huntington-s-disease
#20
REVIEW
Catarina C Kordsachia, Izelle Labuschagne, Julie C Stout
Deficits in facial emotion recognition in Huntington's disease (HD) have been extensively researched, however, a theory-based integration of these deficits into the broader picture of emotion processing is lacking. To describe the full extent of emotion processing deficits we reviewed the clinical research literature in HD, including a consideration of research in Parkinson's disease, guided by a theoretical model on emotion processing, the Component Process Model. Further, to contribute to understanding the mechanisms underlying deficient emotion recognition, we discussed the literature in light of specific emotion recognition theories...
November 29, 2016: Neuroscience and Biobehavioral Reviews
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