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https://www.readbyqxmd.com/read/28812981/the-experimental-study-on-the-emanation-power-of-a-flow-through-thoron-source-made-from-incandescent-gas-mantles
#1
Yunxiang Wang, Lei Zhang, Qiuju Guo
To improve the quality of the calibration of thoron concentration activity measurement, an experimental study on the emanation power of a flow-through thoron source based on incandescent gas mantles was carried out in this paper. The thoron activity concentrations of the outflowed air from the flow-through source were measured using RAD7, and the quantitative relationship between thoron concentrations and flowrates was studied through theoretical analysis, and the thoron emanation powers were obtained from the fitting of the relationship above...
August 16, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28812685/scallop-genome-provides-insights-into-evolution-of-bilaterian-karyotype-and-development
#2
Shi Wang, Jinbo Zhang, Wenqian Jiao, Ji Li, Xiaogang Xun, Yan Sun, Ximing Guo, Pin Huan, Bo Dong, Lingling Zhang, Xiaoli Hu, Xiaoqing Sun, Jing Wang, Chengtian Zhao, Yangfan Wang, Dawei Wang, Xiaoting Huang, Ruijia Wang, Jia Lv, Yuli Li, Zhifeng Zhang, Baozhong Liu, Wei Lu, Yuanyuan Hui, Jun Liang, Zunchun Zhou, Rui Hou, Xue Li, Yunchao Liu, Hengde Li, Xianhui Ning, Yu Lin, Liang Zhao, Qiang Xing, Jinzhuang Dou, Yangping Li, Junxia Mao, Haobing Guo, Huaiqian Dou, Tianqi Li, Chuang Mu, Wenkai Jiang, Qiang Fu, Xiaoteng Fu, Yan Miao, Jian Liu, Qian Yu, Ruojiao Li, Huan Liao, Xuan Li, Yifan Kong, Zhi Jiang, Daniel Chourrout, Ruiqiang Li, Zhenmin Bao
Reconstructing the genomes of bilaterian ancestors is central to our understanding of animal evolution, where knowledge from ancient and/or slow-evolving bilaterian lineages is critical. Here we report a high-quality, chromosome-anchored reference genome for the scallop Patinopecten yessoensis, a bivalve mollusc that has a slow-evolving genome with many ancestral features. Chromosome-based macrosynteny analysis reveals a striking correspondence between the 19 scallop chromosomes and the 17 presumed ancestral bilaterian linkage groups at a level of conservation previously unseen, suggesting that the scallop may have a karyotype close to that of the bilaterian ancestor...
April 3, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28811872/current-and-emerging-treatment-options-for-mantle-cell-lymphoma
#3
REVIEW
Bita Fakhri, Brad Kahl
Mantle cell lymphoma (MCL) is a B-cell non-Hodgkin lymphoma with typically aggressive behavior. The genetic signature is the chromosomal translocation t(11;14)(q13;q32) resulting in overexpression of cyclin D1. Asymptomatic newly diagnosed MCL patients with low tumor burden can be closely observed, deferring therapy to the time of disease progression. Although MCL classically responds to upfront chemotherapy, it remains incurable with standard approaches. For patients in need of frontline therapy, the initial decision is whether to proceed with an intensive treatment strategy or a non-intensive treatment strategy...
August 2017: Therapeutic Advances in Hematology
https://www.readbyqxmd.com/read/28800491/survival-for-patients-with-rare-haematologic-malignancies-changes-in-the-early-21st-century
#4
Dianne Pulte, Janick Weberpals, Lina Jansen, Sabine Luttmann, Bernd Holleczek, Alice Nennecke, Meike Ressing, Alexander Katalinic, Hermann Brenner
INTRODUCTION: Population-level survival has improved for common haematologic malignancies in the early 21st century. However, relatively few population-level data are available for rare haematologic malignancies. METHODS: Data were extracted from 12 cancer registries in Germany and the Surveillance, Epidemiology and End Results database in the United States (US). Cases of haematologic malignancies with an incidence of less than 1 per 100,000 were selected for analysis...
August 7, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28800408/effects-of-phenanthrene-on-early-development-of-the-pacific-oyster-crassostrea-gigas-thunberg-1789
#5
Diego J Nogueira, Jacó J Mattos, Patrick R Dybas, Fabrıcio Flores-Nunes, Silvio Tarou Sasaki, Satie Taniguchi, Éder C Schmidt, Zenilda L Bouzon, Márcia C Bícego, Claudio M R Melo, Guilherme Toledo-Silva, Afonso C D Bainy
Phenanthnere (PHE) is a polycyclic aromatic hydrocarbon continuously discarded in the marine environment and bioavailable to many aquatic species. Although studies about PHE toxicity have been documented for adult oysters, the effects on early developmental stages are poorly characterized in bivalves. In this study, the effects of PHE (0.02 and 2.0μg.L(-1)) were evaluated on the embryogenesis and larval development of Crassostrea gigas. Toxicity bioassays, growth and deformities assessment, analysis of shell calcium abundance and transcript levels of genes related to xenobiotic biotransformation (CYP2AU2, CYP30C1), immune system (Cg-Tal) and tissue growth and shell formation (Ferritin, Insulin-like, Cg-Try, Calmodulin and Nacrein) were assayed in D-shape larvae after 24h of PHE exposure...
August 1, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28798127/a-unified-continental-thickness-from-seismology-and-diamonds-suggests-a-melt-defined-plate
#6
Saikiran Tharimena, Catherine Rychert, Nicholas Harmon
Thick, rigid continents move over the weaker underlying mantle, although geophysical and geochemical constraints on the exact thickness and defining mechanism of the continental plates are widely discrepant. Xenoliths suggest a chemical continental lithosphere ~175 kilometers thick, whereas seismic tomography supports a much thicker root (>250 kilometers) and a gradual lithosphere-asthenosphere transition, consistent with a thermal definition. We modeled SS precursor waveforms from continental interiors and found a 7 to 9% velocity drop at depths of 130 to 190 kilometers...
August 11, 2017: Science
https://www.readbyqxmd.com/read/28797244/a-lowered-26s-proteasome-activity-correlates-with-mantle-lymphoma-cell-lines-resistance-to-genotoxic-stress
#7
Khaoula Ben Younes, Simon Body, Élodie Costé, Pierre-Julien Viailly, Hadjer Miloudi, Clémence Coudre, Fabrice Jardin, Fatma Ben Aissa-Fennira, Brigitte Sola
BACKGROUND: Mantle cell lymphoma (MCL) is a B-cell hemopathy characterized by the t(11;14) translocation and the aberrant overexpression of cyclin D1. This results in an unrestrained cell proliferation. Other genetic alterations are common in MCL cells such as SOX11 expression, mutations of ATM and/or TP53 genes, activation of the NF-κB signaling pathway and NOTCH receptors. These alterations lead to the deregulation of the apoptotic machinery and resistance to drugs. We observed that among a panel of MCL cell lines, REC1 cells were resistant towards genotoxic stress...
August 10, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28797213/surveillance-imaging-in-mantle-cell-lymphoma-in-first-remission-lacks-clinical-utility
#8
Daniel M Guidot, Jeffrey M Switchenko, Loretta J Nastoupil, Jean L Koff, Kristie A Blum, Joseph Maly, Christopher R Flowers, Jonathon B Cohen
Mantle cell lymphoma (MCL) is a heterogeneous disease with high relapse rates. Limited data guide the use of surveillance imaging following treatment. We constructed a retrospective cohort from two academic institutions of patients with MCL who completed first-line therapy and underwent follow-up for relapse, analyzing the effect of surveillance imaging on survival. Of 217 patients, 102 had documented relapse, with 38 (37%) diagnosed by surveillance imaging and 64 (63%) by other methods. Relapse diagnosis by surveillance imaging had no significant advantage in overall survival from diagnosis date (hazard ratio [HR] = 0...
August 10, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28797193/exposure-response-evaluations-of-venetoclax-efficacy-and-safety-in-patients-with-non-hodgkin-lymphoma
#9
Apurvasena Parikh, Sathej Gopalakrishnan, Kevin J Freise, Maria E Verdugo, Rajeev M Menon, Sven Mensing, Ahmed Hamed Salem
Exposure-response analyses were performed for a venetoclax monotherapy study in 106 patients with varying subtypes of non-Hodgkin lymphoma (NHL) (NCT01328626). Logistic regression, time-to-event, and progression-free survival (PFS) analyses were used to evaluate the relationship between venetoclax exposure, NHL subtype and response, PFS, or occurrence of serious adverse events. Trends for small increases in the probability of response with increasing venetoclax exposures were identified, and became more evident when assessed by NHL subtype...
August 10, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28796292/exposure-to-low-environmental-concentrations-of-manganese-lead-and-cadmium-alters-the-serotonin-system-of-blue-mussels
#10
Marc Fraser, Marlène Fortier, Delphine Foucher, Pierre-Hervé Roumier, Pauline Brousseau, Michel Fournier, Céline Surette, Cathy Vaillancourt
Serotonin plays a crucial role in mussel survival and reproduction. Although serotonin system can be affected by metals, the effects of environmental concentration of metals, such as manganese (Mn), lead (Pd), and cadmium (Cd), have never been studied in blue mussels. This study aims to determine the effects of exposure to Mn, Pb or Cd on serotonin levels, monoamine oxidase (MAO) activity, and serotonin transporter (SERT) in the blue mussel, Mytilus edulis. Mussels were exposed in vivo to increasing and environmentally relevant doses of Mn (10-1000 nM; 0...
August 10, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28793917/molluscicidal-activity-and-mechanism-of-toxicity-of-a-novel-salicylanilide-ester-derivative-against-biomphalaria-species
#11
Ping He, Weisi Wang, Benjamin Sanogo, Xin Zeng, Xi Sun, Zhiyue Lv, Dongjuan Yuan, Liping Duan, Zhongdao Wu
BACKGROUND: Schistosomiasis mansoni is one of the most important, but often neglected, tropical diseases transmitted by snails of the genus Biomphalaria. Control of the intermediate host snail plays a crucial role in preventing the spread of schistosomiasis. However, there is only one molluscicide, niclosamide, recommended by the World Health Organization. Niclosamide has been used for several decades but is toxic to non-target organisms. Therefore, it is necessary to optimize the scaffold of niclosamide and develop novel molluscicides with enhanced potency and decreased toxicity to non-target organisms...
August 10, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28792421/mass-mortalities-of-unknown-aetiology-in-pacific-oysters-crassostrea-gigas-in-port-stephens-new-south-wales-australia
#12
Jeffrey Go, Ania T Deutscher, Zoe B Spiers, Kirk Dahle, Peter D Kirkland, Cheryl Jenkins
From January to June 2013 and November to January 2014, mass mortalities were reported in Pacific oysters Crassostrea gigas cultivated in Port Stephens estuary, New South Wales, Australia. In some cases, 100% mortality was reported in both triploid and diploid C. gigas, although native species of oyster cultivated in the same areas remained unaffected. Histological examination of oysters sampled from the time of mortality events revealed consistent but non-specific pathology, involving a diffuse haemocytic infiltrate in the connective tissue surrounding the digestive gland, extending into the mantle in some instances, but no other signs of any infectious aetiological agent...
August 9, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28791403/complex-analysis-of-the-tp53-tumor-suppressor-in-mantle-cell-and-diffuse-large-b-cell-lymphomas
#13
Lenka Zlamalikova, Mojmir Moulis, Barbora Ravcukova, Kvetoslava Liskova, Jitka Malcikova, David Salek, Jiri Jarkovsky, Miluse Svitakova, Renata Hrabalkova, Jan Smarda, Jana Smardova
Mutations and deletions of the tumor suppressor TP53 gene are the most frequent genetic alterations detected in human tumors, though they are rather less frequent in lymphomas. However, acquisition of the TP53 mutation was demonstrated to be one of the characteristic markers in mantle cell lymphoma (MCL) and diffuse large B-cell lymphoma (DLBCL) and prognostic value of the TP53 status has been recognized for these diseases. We present the complex analysis of the TP53 aberrations in 57 cases of MCL and 131 cases of DLBCL...
August 8, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28791187/ibrutinib-treatment-of-mantle-cell-lymphoma-relapsing-at-central-nervous-system-a-case-report-and-literature-review
#14
Donato Mannina, Barbara Loteta
Mantle cell lymphoma (MCL) accounts for about 5% of all lymphomas. Its clinical and histological features are heterogeneous. After a frequently good initial response, the disease generally and repeatedly relapses and finally the outcome is poor. Particularly severe is the prognosis of the rare occurrence of CNSi (Central Nervous System involvement). Ibrutinib, an oral inhibitor of Bruton tyrosine kinase (BTK), has shown strong activity in relapsing patients with Chronic Lymphocytic Leukemia (CLL) and MCL. Few reports are available about treatment with ibrutinib of patients presenting CNSi by lymphoproliferative diseases (LPD)...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28791156/mismatch-between-the-eye-and-the-optic-lobe-in-the-giant-squid
#15
Yung-Chieh Liu, Tsung-Han Liu, Chun-Chieh Yu, Chia-Hao Su, Chuan-Chin Chiao
Giant squids (Architeuthis) are a legendary species among the cephalopods. They live in the deep sea and are well known for their enormous body and giant eyes. It has been suggested that their giant eyes are not adapted for the detection of either mates or prey at distance, but rather are best suited for monitoring very large predators, such as sperm whales, at distances exceeding 120 m and at a depth below 600 m (Nilsson et al. 2012 Curr. Biol.22, 683-688. (doi:10.1016/j.cub.2012.02.031)). However, it is not clear how the brain of giant squids processes visual information...
July 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28790325/horizontal-mantle-flow-controls-subduction-dynamics
#16
E Ficini, L Dal Zilio, C Doglioni, T V Gerya
It is generally accepted that subduction is driven by downgoing-plate negative buoyancy. Yet plate age -the main control on buoyancy- exhibits little correlation with most of the present-day subduction velocities and slab dips. "West"-directed subduction zones are on average steeper (~65°) than "East"-directed (~27°). Also, a "westerly"-directed net rotation of the lithosphere relative to the mantle has been detected in the hotspot reference frame. Thus, the existence of an "easterly"-directed horizontal mantle wind could explain this subduction asymmetry, favouring steepening or lifting of slab dip angles...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28789640/the-purplish-bifurcate-mussel-mytilisepta-virgata-gene-expression-atlas-reveals-a-remarkable-tissue-functional-specialization
#17
Marco Gerdol, Yuki Fujii, Imtiaj Hasan, Toru Koike, Shunsuke Shimojo, Francesca Spazzali, Kaname Yamamoto, Yasuhiro Ozeki, Alberto Pallavicini, Hideaki Fujita
BACKGROUND: Mytilisepta virgata is a marine mussel commonly found along the coasts of Japan. Although this species has been the subject of occasional studies concerning its ecological role, growth and reproduction, it has been so far almost completely neglected from a genetic and molecular point of view. In the present study we present a high quality de novo assembled transcriptome of the Japanese purplish mussel, which represents the first publicly available collection of expressed sequences for this species...
August 8, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28782765/infrared-study-on-the-thermal-evolution-of-solid-state-formamide
#18
Riccardo Giovanni Urso, Carlotta Scirè, Giuseppe Antonio Baratta, John Robert Brucato, Giuseppe Compagnini, Zuzana Kaňuchová, Maria Elisabetta Palumbo, Giovanni Strazzulla
Laboratory experiments have shown that the energetic processing, i.e. ion bombardment and UV photolysis, of interstellar grain mantles and cometary surfaces is efficient in the production of formamide. To explain its presence in the gas-phase in these astrophysical environments, a desorption mechanism has to be taken into account. In this work we show experimental results on the thermal evolution of formamide when deposited at 17 K as pure and in mixture with water or carbon monoxide. In these samples, we observed formamide desorption at 220 K...
August 16, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28776024/a-laboratory-nanoseismological-study-on-deep-focus-earthquake-micromechanics
#19
Yanbin Wang, Lupei Zhu, Feng Shi, Alexandre Schubnel, Nadege Hilairet, Tony Yu, Mark Rivers, Julien Gasc, Ahmed Addad, Damien Deldicque, Ziyu Li, Fabrice Brunet
Global earthquake occurring rate displays an exponential decay down to ~300 km and then peaks around 550 to 600 km before terminating abruptly near 700 km. How fractures initiate, nucleate, and propagate at these depths remains one of the greatest puzzles in earth science, as increasing pressure inhibits fracture propagation. We report nanoseismological analysis on high-resolution acoustic emission (AE) records obtained during ruptures triggered by partial transformation from olivine to spinel in Mg2GeO4, an analog to the dominant mineral (Mg,Fe)2SiO4 olivine in the upper mantle, using state-of-the-art seismological techniques, in the laboratory...
July 2017: Science Advances
https://www.readbyqxmd.com/read/28775119/incidence-and-management-of-toxicity-associated-with-ibrutinib-and-idelalisib-a-practical-approach
#20
Iris de Weerdt, Suzanne M Koopmans, Arnon P Kater, Michel van Gelder
The use of novel B cell receptor signaling inhibitors results in high response rates and long progression-free survival in patients with indolent B cell malignancies, such as chronic lymphocytic leukemia, follicular lymphoma, mantle cell lymphoma and Waldenstroms macroglobulinemia. Ibrutinib, the first-in-class inhibitor or Bruton's tyrosine kinase, and idelalisib, the first-in-class inhibitor of phosphatidylinositol 3-kinase δ have recently been approved for several indolent B cell malignancies. These drugs especially foresee in previously unmet needs for patients with relapsed or refractory disease, high-risk cytogenetic or molecular abnormalities or with comorbidities...
August 3, 2017: Haematologica
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