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https://www.readbyqxmd.com/read/28528467/changes-in-deviation-of-absorbed-dose-to-water-among-users-by-chamber-calibration-shift
#1
Tetsurou Katayose, Hidetoshi Saitoh, Mitsunobu Igari, Weishan Chang, Shimpei Hashimoto, Mie Morioka
PURPOSE: The JSMP01 dosimetry protocol had adopted the provisional (60)Co calibration coefficient [Formula: see text], namely, the product of exposure calibration coefficient N C and conversion coefficient k D,X. After that, the absorbed dose to water D w standard was established, and the JSMP12 protocol adopted the [Formula: see text] calibration. In this study, the influence of the calibration shift on the measurement of D w among users was analyzed. MATERIALS AND METHODS: The intercomparison of the D w using an ionization chamber was annually performed by visiting related hospitals...
May 20, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28525648/the-role-of-omics-in-the-application-of-adverse-outcome-pathways-for-chemical-risk-assessment
#2
Erica K Brockmeier, Geoff Hodges, Thomas H Hutchinson, Emma Butler, Markus Hecker, Knut Erik Tollefsen, Natalia Garcia-Reyero, Peter Kille, Dörthe Becker, Kevin Chipman, John Colbourne, Timothy W Collette, Andrew Cossins, Mark Cronin, Peter Graystock, Steve Gutsell, Dries Knapen, Ioanna Katsiadaki, Anke Lange, Stuart Marshall, Stewart F Owen, Edward J Perkins, Stewart Plaistow, Anthony Schroeder, Daisy Taylor, Mark Viant, Gerald Ankley, Francesco Falciani
In conjunction with the second International Environmental Omics Symposium (iEOS) conference, held at the University of Liverpool (UK) in September 2014, a workshop was held to bring together experts in toxicology and regulatory science from academia, government and industry. The purpose of the workshop was to review the specific roles that high-content omics datasets (e.g., transcriptomics, metabolomics, lipidomics, and proteomics) can hold within the adverse outcome pathway (AOP) framework for supporting ecological and human health risk assessments...
May 19, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28525374/the-effect-of-rapamycin-nvp-bez235-aspirin-and-metformin-on-pi3k-akt-mtor-signaling-pathway-of-pik3ca-related-overgrowth-spectrum-pros
#3
Yasuyo Suzuki, Yasushi Enokido, Kenichiro Yamada, Mie Inaba, Kumiko Kuwata, Naoki Hanada, Tsuyoshi Morishita, Seiji Mizuno, Nobuaki Wakamatsu
The phosphatidylinositol 3-kinase (PI3K)/AKT/mTOR signaling pathway is critical for cellular growth and metabolism. Recently, mosaic or segmental overgrowth, a clinical condition caused by heterozygous somatic activating mutations in PIK3CA, was established as PIK3CA-related overgrowth spectrum (PROS). In this study, we report a Japanese female diagnosed with PROS, who presented with hyperplasia of the lower extremities, macrodactyly, multiple lipomatosis, and sparse hair. Sequencing and mutant allele frequency analysis of PIK3CA from affected tissues revealed that the patient had a heterozygous mosaic mutation (c...
May 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28511579/does-an-attention-bias-to-appetitive-and-aversive-words-modulate-interference-control-in-youth-with-adhd
#4
Ili Ma, Gabry W Mies, Nanda N J Lambregts-Rommelse, Jan K Buitelaar, Antonius H N Cillessen, Anouk Scheres
Interference control refers to the ability to selectively attend to certain information while ignoring distracting information. This ability can vary as a function of distractor relevance. Distractors that are particularly relevant to an individual may attract more attention than less relevant distractors. This is referred to as attention bias. Weak interference control and altered reward sensitivity are both important features of attention deficit hyperactivity disorder (ADHD). However, interference control is typically studied in isolation...
May 16, 2017: Child Neuropsychology: a Journal on Normal and Abnormal Development in Childhood and Adolescence
https://www.readbyqxmd.com/read/28511012/nonlinear-optical-magnetism-revealed-by-second-harmonic-generation-in-nanoantennas
#5
Sergey Kruk, Rocio Camacho-Morales, Lei Xu, Mohsen Rahmani, Daria A Smirnova, Lei Wang, Hark Hoe Tan, Chennupati Jagadish, Dragomir N Neshev, Yuri S Kivshar
Nonlinear effects at the nanoscale are usually associated with the enhancement of electric fields in plasmonic structures. Recently emerged new platform for nanophotonics based on high-index dielectric nanoparticles utilizes optically-induced magnetic response via multipolar Mie resonances and provides novel opportunities for nanoscale nonlinear optics. Here, we observe strong second-harmonic generation from AlGaAs nanoantennas driven by both electric and magnetic resonances. We distinguish experimentally the contribution of electric and magnetic nonlinear response by analysing the structure of polarisation states of vector beams in the second-harmonic radiation...
May 16, 2017: Nano Letters
https://www.readbyqxmd.com/read/28509571/numerical-study-of-novel-ratiometric-sensors-based-on-plasmon-exciton-coupling
#6
Yuankai Tang, Xiantong Yu, Haifeng Pan, Jinquan Chen, Benjamin Audit, Françoise Argoul, Sanjun Zhang, Jianhua Xu
We numerically studied the optical properties of spherical nanostructures made of an emitter core coated by a silver shell through the generalized Mie theory. When there is a strong coupling between the localized surface plasmon in the metallic shell and the emitter exciton in the core, the extinction spectra exhibit two peaks. Upon adsorption of analytes on these core-shell nanostructures, the intensities of the two peaks change with opposite trends. This property makes them potential sensitive ratiometric sensors...
January 1, 2017: Applied Spectroscopy
https://www.readbyqxmd.com/read/28504587/a-single-intercostal-space-thoracoscopic-approach-for-minimally-invasive-ivor-lewis-esophagectomy
#7
Saibo Pan, Lian Wang, Ming Wu, Qi Wang, Gang Shen, Gang Chen
OBJECTIVE: We present a laparoscopic and single intercostal space thoracoscopic approach (SICS group) for Ivor Lewis minimally invasive esophagectomy (MIE) and provide postoperative analgesia with a continuous multiple intercostal nerve blocking technique. The characters of this technique are evaluated. MATERIALS AND METHODS: From October 2015 to April 2016, 18 consecutive patients with esophageal cancer were treated with Ivor Lewis MIE by a SICS group. Moreover, from July 2014 to September 2015, 48 patients with esophageal cancer received Ivor Lewis MIE by four-port video-assisted thoracic surgery (VATS) approach...
May 15, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/28501469/routes-for-drug-translocation-across-the-blood-brain-barrier-exploiting-peptides-as-delivery-vectors
#8
REVIEW
Mie Kristensen, Birger Brodin
A number of potent drugs for the treatment of brain diseases are available. However, in order for them to reach their target site of action, they must pass the blood-brain barrier (BBB). The capillary endothelium comprises the major barrier of the BBB and allows only passive permeation of some small lipophilic molecules. Brain delivery of the larger biopharmaceuticals, which today includes an increasing number of novel drug entities, is therefore restricted; both due to their molecular size and their hydrophilic nature...
May 10, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28500308/ultrafast-all-optical-tuning-of-direct-gap-semiconductor-metasurfaces
#9
Maxim R Shcherbakov, Sheng Liu, Varvara V Zubyuk, Aleksandr Vaskin, Polina P Vabishchevich, Gordon Keeler, Thomas Pertsch, Tatyana V Dolgova, Isabelle Staude, Igal Brener, Andrey A Fedyanin
Optical metasurfaces are regular quasi-planar nanopatterns that can apply diverse spatial and spectral transformations to light waves. However, metasurfaces are no longer adjustable after fabrication, and a critical challenge is to realise a technique of tuning their optical properties that is both fast and efficient. We experimentally realise an ultrafast tunable metasurface consisting of subwavelength gallium arsenide nanoparticles supporting Mie-type resonances in the near infrared. Using transient reflectance spectroscopy, we demonstrate a picosecond-scale absolute reflectance modulation of up to 0...
May 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/28495420/the-vacuum-bell-device-as-a-sternal-lifter-an-immediate-effect-even-with-a-short-time-use
#10
Silvia Yukari Togoro, Miguel Lia Tedde, Robert S Eisinger, Erica Mie Okumura, Jose Ribas Milanez de Campos, Paulo Manuel Pêgo-Fernandes
BACKGROUND: To minimize cardiac perforation during the minimally invasive repair of pectus excavatum (MIRPE), several surgeons have suggested using a suction device to intraoperatively lift the sternum. Whether or not this technique is effective for all PE patients is not yet known. As such, our aim was to quantify the extent to which a suction device is capable of lifting the sternum with a short duration of use. METHODS: 30 PE patients received a low-dose CT scan as part of standard PE evaluation...
May 1, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28480612/pharmacological-and-toxicological-study-of-maytenus-ilicifolia-leaf-extract-part-i-preclinical-studies
#11
Ricardo Tabach, Joaquim M Duarte-Almeida, Elisaldo A Carlini
One of the Brazilians medicinal plants most cited in ethnopharmacological surveys for the treatment of ulcers and gastric diseases was evaluated for its efficacy and toxicity. Maytenus ilicifolia leaf extract (MIE) was acutely and chronically (180 days) administered to rats, mice, and dogs. Acute tests were antiulcer effect and toxicological trials (observational pharmacological screening, LD50, motor coordination, sleeping time and motor activity). Chronic tests were the following: weight gain/loss and behavioral parameters in rats and mice; estrus cycle, effects on fertility, and teratogenic studies in rats and mutagenic features in mice, in addition to the Ames and micronucleus test...
May 8, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28471406/fine-particle-sensor-based-on-multi-angle-light-scattering-and-data-fusion
#12
Wenjia Shao, Hongjian Zhang, Hongliang Zhou
Meteorological parameters such as relative humidity have a significant impact on the precision of PM2.5 measurement instruments based on light scattering. Instead of adding meteorological sensors or dehumidification devices used widely in commercial PM2.5 measurement instruments, a novel particle sensor based on multi-angle light scattering and data fusion is proposed to eliminate the effect of meteorological factors. Three photodiodes are employed to collect the scattered light flux at three distinct angles...
May 4, 2017: Sensors
https://www.readbyqxmd.com/read/28458452/a-high-fat-diet-increases-the-incidence-of-mammary-cancer-inc-ha-ras-proto-oncogene-transgenic-rats
#13
Mie Magaki, Hiroko Ishii, Aya Yamasaki, Yurika Kitai, Saeda Kametani, Reiko Nakai, Alexander Dabid, Hiroyuki Tsuda, Takamasa Ohnishi
Mammary cancer is the most common type of cancer and the fifth most common cause of cancer-related deaths among Japanese women. The recent sharp increase in the number of women diagnosed with mammary cancer per year is thought to be associated with increased fat intake resulting from changes in the dietary habits of contemporary Japanese citizens. In this study, human c-Ha-ras proto-oncogene transgenic (Hras128) rats, which are highly susceptible to mammary carcinogens, were fed high- or low-fat diets to examine the relationship between fat consumption and the development of mammary cancer...
April 2017: Journal of Toxicologic Pathology
https://www.readbyqxmd.com/read/28455585/the-incidence-and-risk-factors-of-febrile-neutropenia-in-chemotherapy-na%C3%A3-ve-lung-cancer-patients-receiving-etoposide-plus-platinum
#14
Takumi Fujiwara, Hirotsugu Kenmotsu, Tateaki Naito, Takahisa Kawamura, Nobuaki Mamesaya, Mie Kotake, Haruki Kobayashi, Shota Omori, Kazuhisa Nakashima, Kazushige Wakuda, Akira Ono, Tetsuhiko Taira, Haruyasu Murakami, Katsuhiro Omae, Keita Mori, Masahiro Endo, Toshiaki Takahashi
PURPOSE: This study was to determine the incidence and risk factors of febrile neutropenia in chemotherapy-naïve Japanese patients treated systemically with etoposide plus platinum for lung cancer. METHODS: The study was a retrospective analysis of 244 patients who were monitored for febrile neutropenia through multiple cycles of the combination of etoposide with platinum, and the associations between incidence of febrile neutropenia and patient characteristics were evaluated...
June 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28454179/simple-effective-medium-approximation-with-rayleigh-scattering
#15
Ashfaqul Anwar Siraji, Yang Zhao
We present a simple analytical effective medium approximation (EMA) that can account for finite-sized and interacting inclusions in the Rayleigh scattering regime. The polarizability of an individual inclusion is calculated using the Mie solution and net polarizability is formed, leading to effective parameters. The Mie coefficients are expanded into polynomials and curtailed to the sixth order, which is accurate in the Rayleigh regime. Results obtained using the developed models are compared with experimental results and existing EMAs...
May 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28451441/performance-evaluation-of-the-compounding-robot-apotecachemo-for-injectable-anticancer-drugs-in-a-japanese-hospital
#16
Takuya Iwamoto, Takuya Morikawa, Miki Hioki, Hirofumi Sudo, Demis Paolucci, Masahiro Okuda
BACKGROUND: The accuracy, safety and feasibility of, the compounding robot APOTECAchemo were evaluated in the clinical practice of Japan. METHODS: Accuracy and precision of robotic preparations by APOTECAchemo was evaluated in 20 preparations of fluorouracil (FU) and cyclophosphamide (CPA) infusions by four pharmacists. Environmental and product contaminations with FU and CPA were evaluated by wipe testing. Robotic performance was compared with manual preparation in a biological safety cabinet...
2017: Journal of Pharmaceutical Health Care and Sciences
https://www.readbyqxmd.com/read/28447270/annual-incidences-of-visual-impairment-during-10-year-period-in-mie-prefecture-japan
#17
Kengo Ikesugi, Takako Ichio, Hideyuki Tsukitome, Mineo Kondo
PURPOSE: To determine the annual incidence of visual impairment in a Japanese population during a 10-year period. METHODS: We examined the physical disability certificates issued yearly between 2004 and 2013 in Mie prefecture, Japan. During this period 2468 visually impaired people were registered under the newly defined Act on Welfare of the Physically Disabled Persons' criteria. The age, sex distribution, and causes of visual impairment were determined from the certificates...
April 26, 2017: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28447004/principles-of-esophageal-cancer-surgery-including-surgical-approaches-and-optimal-node-dissection-2-vs-3-field
#18
Philippe Nafteux, Lieven Depypere, Hans Van Veer, Willy Coosemans, Toni Lerut
Surgery for esophageal carcinoma and carcinoma of the gastro-esophageal junction (GEJ) is considered as one of the most complex and challenging interventions on the digestive tract. This is due to the intimate relations with vital structures in the chest and the tendency of early lymphatic dissemination via a dense and complex submucosal network. This review article discusses the different aspects of surgical access routes in the light of the ever-evolving techniques, in particular the minimally invasive esophagectomy (MIE)...
March 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28444960/in-vivo-absorption-and-metabolism-of-leptosperin-and-methyl-syringate-abundantly-present-in-manuka-honey
#19
Akari Ishisaka, Shinichi Ikushiro, Mie Takeuchi, Yukako Araki, Maki Juri, Yui Yoshiki, Yoshichika Kawai, Toshio Niwa, Noritoshi Kitamoto, Toshiyuki Sakaki, Hirohito Ishikawa, Yoji Kato
SCOPE: Manuka honey, which shows strong non-peroxide-dependent antibacterial activity, contains unique components, such as methyl syringate 4-O-β-D-gentiobioside (leptosperin) and its aglycone, methyl syringate (MSYR). To determine the potential for biological activity evoked by the ingestion of leptosperin and MSYR, we investigated the absorption and metabolism of these components in manuka honey. METHODS AND RESULTS: The incubation of MSYR with liver microsomes or S9 fractions in vitro resulted in the formation of MSYR-glucuronide (MSYR-GA), MSYR-sulfate (MSYR-S), and syringic acid as metabolites...
April 26, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28443905/predicting-oligomer-polymer-compatibility-and-the-impact-on-nanoscale-segregation-in-thin-films
#20
Elise F D Sabattié, Jos Tasche, Mark R Wilson, Maximilian W A Skoda, Arwel Hughes, Torsten Lindner, Richard L Thompson
Compatibility between oligomers and polymers was systematically assessed using differential scanning calorimetry (DSC) and was correlated with similarity in saturation and solubility parameter. These measurements enabled validation of detailed volume of mixing calculations using Statistical Association Fluid Theory (SAFT-γ Mie) and molecular dynamics (MD) simulations, which can be used to predict behaviour beyond the experimentally accessible conditions. These simulations confirmed that squalane is somewhat more compatible with poly(isoprene), "PI" than poly(butadiene), "PB", and further enabled prediction of the temperature dependence of compatibility...
April 26, 2017: Soft Matter
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