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https://www.readbyqxmd.com/read/28340172/repositioning-disulfiram-as-a-radiosensitizer-against-atypical-teratoid-rhabdoid-tumor
#1
Young Eun Lee, Seung Ah Choi, Pil Ae Kwack, Hak Jae Kim, Il Han Kim, Kyu-Chang Wang, Ji Hoon Phi, Ji Yeoun Lee, Sangjoon Chong, Sung-Hye Park, Kyung Duk Park, Do Won Hwang, Kyeung Min Joo, Seung-Ki Kim
Background.: Atypical teratoid/rhabdoid tumor (AT/RT) is one of the most common malignant brain tumors in infants. Although cancer stem cells of AT/RT express aldehyde dehydrogenase (ALDH), effective chemotherapies against AT/RT have not been established. Here, we examined radiosensitizing effects of disulfiram (DSF), an irreversible inhibitor of ALDH against AT/RT for a novel therapeutic method. Methods.: Patient-derived primary cultured AT/RT cells (SNU.AT/RT-5 and SNU...
March 17, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28338427/long-term-endocrine-outcome-of-suprasellar-arachnoid-cysts
#2
Ji Yeoun Lee, Young Ah Lee, Hae Woon Jung, Sangjoon Chong, Ji Hoon Phi, Seung-Ki Kim, Choong-Ho Shin, Kyu-Chang Wang
OBJECTIVE Due to their distinct location, suprasellar arachnoid cysts are known to cause a wide variety of problems, such as hydrocephalus, endocrine symptoms, and visual abnormalities. The long-term outcome of these cysts has not been elucidated. To find out the long-term outcome of suprasellar arachnoid cysts, a retrospective review of the patients was performed. The neurological and endocrine symptoms were thoroughly reviewed. METHODS Forty-five patients with suprasellar arachnoid cysts, with an average follow-up duration of 9...
March 24, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28338358/a-mismatch-between-athlete-practice-and-current-sports-nutrition-guidelines-among-elite-female-and-male-middle-and-long-distance-athletes
#3
Ida Aliisa Heikura, Trent Stellingwerff, Antti A Mero, Arja Leena Tuulia Uusitalo, Louise Mary Burke
Contemporary nutrition guidelines promote a variety of periodized and time-sensitive recommendations, but current information regarding the knowledge and practice of these strategies among world-class athletes is limited. The aim of this study was to investigate this theme by implementing a questionnaire on dietary periodization practices in national/international level female (n=27) and male (n=21) middle- and long-distance runners/race-walkers. The questionnaire aimed to gain information on between and within-day dietary choices, as well as timing of pre- and post-training meals and practices of training with low or high carbohydrate (CHO) availability...
March 24, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28331872/induction-of-erythropoiesis-by-hypoxia-inducible-factor-prolyl-hydroxylase-inhibitors-without-promotion-of-tumor-initiation-progression-or-metastasis-in-a-vegf-sensitive-model-of-spontaneous-breast-cancer
#4
Todd W Seeley, Mark D Sternlicht, Stephen J Klaus, Thomas B Neff, David Y Liu
The effects of pharmacological hypoxia-inducible factor (HIF) stabilization were investigated in the MMTV-Neu(ndl)-YD5 (NeuYD) mouse model of breast cancer. This study first confirmed the sensitivity of this model to increased vascular endothelial growth factor (VEGF), using bigenic NeuYD;MMTV-VEGF-25 mice. Tumor initiation was dramatically accelerated in bigenic animals. Bigenic tumors were also more aggressive, with shortened doubling times and increased lung metastasis as compared to NeuYD controls. In separate studies, NeuYD mice were treated three times weekly from 7 weeks of age until study end with two different HIF prolyl hydroxylase inhibitors (HIF-PHIs), FG-4497 or roxadustat (FG-4592)...
2017: Hypoxia
https://www.readbyqxmd.com/read/28328573/activity-rhythms-and-clinical-correlates-in-fibromyalgia
#5
Ariel B Neikrug, Gary Donaldson, Eli Iacob, Sam L Williams, Christopher A Hamilton, Akiko Okifuji
The primary aim of this study was to evaluate activity rhythms in fibromyalgia syndrome (FMS) and their association with FMS-related symptoms. We hypothesized that stronger and more consistent activity rhythms would be associated with reduced symptom severity and presentation in FMS. 292 patients with FMS (Mean age = 45.1±11.1; 272 females) provided a 7-day actigraphy recording and responses to questionnaires addressing degree of pain, fatigue, mood, and physical impairment. Using a simple cosine model, we extracted Amplitude (activity range), Phi (time at maximum), Mesor (mean activity), and their variabilities (across days) from each participant's actigraphy...
March 21, 2017: Pain
https://www.readbyqxmd.com/read/28328516/anrad-a-neuromorphic-anomaly-detection-framework-for-massive-concurrent-data-streams
#6
Qiuwen Chen, Ryan Luley, Qing Wu, Morgan Bishop, Richard W Linderman, Qinru Qiu
The evolution of high performance computing technologies has enabled the large-scale implementation of neuromorphic models and pushed the research in computational intelligence into a new era. Among the machine learning applications, unsupervised detection of anomalous streams is especially challenging due to the requirements of detection accuracy and real-time performance. Designing a computing framework that harnesses the growing computing power of the multicore systems while maintaining high sensitivity and specificity to the anomalies is an urgent research topic...
March 17, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28327707/direct-visualization-of-carbon-nanotube-degradation-in-primary-cells-by-photothermal-imaging
#7
Julie Russier, Laura Oudjedi, Martin Piponnier, Cyrill Bussy, Maurizio Prato, Kostas Kostarelos, Brahim Lounis, Alberto Bianco, Laurent Cognet
Assessment of biodegradability of carbon nanotubes (CNTs) is a critically important aspect that needs to be solved before their translation into new biomedical tools. CNT biodegradation has been shown both in vitro and in vivo, but we are limited by the number of analytical techniques that can be used to follow the entire process. Photothermal imaging (PhI) is an innovative technique that enables the quantitative detection of nanometer-sized absorptive objects. In this study, we demonstrate that PhI allows the observation of the degradation process of functionalized multi-walled carbon nanotubes (MWCNTs) following their internalization by primary glial cells...
March 22, 2017: Nanoscale
https://www.readbyqxmd.com/read/28325527/collaborative-pharmacist-prescribing-within-the-opioid-substitution-treatment-program-in-south-australia-patient-and-pharmacist-views
#8
Phuong-Phi Le, Annette Braunack-Mayer, Caroline Laurence
There is a shortage of medical practitioners able and/or willing to prescribe OST. This qualitative study investigated an alternative model of care where by pharmacists co-prescribed with an accredited doctor for OST patients. Semi-structured face-to-face interviews with 14 OST patients were conducted at a state government drug and alcohol clinic about their views on pharmacist prescribing OST for them. In the second phase of the study, three focus group interviews with 18 pharmacists were conducted to explore their views on a policy proposal which would allow them to co-prescribe for OST patients...
February 27, 2017: Research in Social & Administrative Pharmacy: RSAP
https://www.readbyqxmd.com/read/28323205/modelling-mixing-within-the-dead-space-of-the-lung-improves-predictions-of-functional-residual-capacity
#9
Chris D Harrison, Phi Anh Phan, Cathy Zhang, Daniel Geer, Andrew D Farmery, Stephen J Payne
Routine estimation of functional residual capacity (FRC) in ventilated patients has been a long held goal, with many methods previously proposed, but none have been used in routine clinical practice. This paper proposes three models for determining FRC using the nitrous oxide concentration from the entire expired breath in order to improve the precision of the estimate. Of the three models proposed, a dead space with two mixing compartments provided the best results, reducing the mean limits of agreement with the FRC measured by whole body plethysmography by up to 41%...
March 18, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28322234/propsa-and-the-prostate-health-index-as-predictive-markers-for-aggressiveness-in-low-risk-prostate-cancer-results-from-an-international-multicenter-study
#10
I Heidegger, H Klocker, R Pichler, A Pircher, W Prokop, E Steiner, C Ladurner, E Comploj, A Lunacek, D Djordjevic, A Pycha, E Plas, W Horninger, J Bektic
BACKGROUND: One of the major challenges in prostate cancer (PCa) treatment is distinguishing insignificant PCa from those forms that need active treatment. We evaluated the impact of PSA isoforms on risk stratification in patients with low-risk PCa as well as in active surveillance (AS) candidates who underwent radical prostatectomy. METHODS: A total of 112 patients with biopsy confirmed Gleason score (GS) 6 PCa of four different international institutions were prospectively enrolled in the study...
March 21, 2017: Prostate Cancer and Prostatic Diseases
https://www.readbyqxmd.com/read/28320301/characterization-of-two-recombinant-3-hexulose-6-phosphate-synthases-from-the-halotolerant-obligate-methanotroph-methylomicrobium-alcaliphilum-20z
#11
O N Rozova, S Y But, V N Khmelenina, A S Reshetnikov, I I Mustakhimov, Y A Trotsenko
Two key enzymes of the ribulose monophosphate (RuMP) cycle for formaldehyde fixation, 3-hexulose-6-phosphate synthase (HPS) and 6-phospho-3-hexulose isomerase (PHI), in the aerobic halotolerant methanotroph Methylomicrobium alcaliphilum 20Z are encoded by the genes hps and phi and the fused gene hps-phi. The recombinant enzymes HPS-His6, PHI-His6, and the two-domain protein HPS-PHI were obtained by heterologous expression in Escherichia coli and purified by affinity chromatography. PHI-His6, HPS-His6 (2 × 20 kDa), and the fused protein HPS-PHI (2 × 40 kDa) catalyzed formation of fructose 6-phosphate from formaldehyde and ribulose-5-phosphate with activities of 172 and 22 U/mg, respectively...
February 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28319329/extracellular-acidosis-and-very-low-na-inhibit-nbcn1-and-nhe1-mediated-net-acid-extrusion-from-mouse-vascular-smooth-muscle-cells
#12
Lisbeth Bonde, Ebbe Boedtkjer
AIM: The electroneutral Na(+) ,HCO3(-) -cotransporter NBCn1 and Na(+) /H(+) -exchanger NHE1 regulate acid-base balance in vascular smooth muscle cells (VSMCs) and modify artery function and structure. Pathological conditions-notably ischemia-can dramatically perturb intracellular (i) and extracellular (o) pH and [Na(+) ]. We examined effects of low [Na(+) ]o and pHo on NBCn1 and NHE1 activity in VSMCs of small arteries. METHODS: We measured pHi by 2',7'-bis-(2-carboxyethyl)-5-(and-6)-carboxyfluorescein-based fluorescence microscopy of mouse mesenteric arteries and induced intracellular acidification by NH4(+) -prepulse technique...
March 20, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28318255/excited-state-decay-paths-in-tetraphenylethene-derivatives
#13
Yuan-Jun Gao, Xue-Ping Chang, Xiang-Yang Liu, Quan-Song Li, Ganglong Cui, Walter Thiel
The photophysical properties of tetraphenylethene (TPE) compounds may differ widely depending on the substitution pattern, for example with regard to the fluorescence quantum yield phi_f and the propensity to exhibit aggregation-induced emission (AIE). We report combined electronic structure calculations and nonadiabatic dynamics simulations to study the excited-state decay mechanisms of two TPE derivatives with four methyl substituents, either in meta-position (TPE-4mM, phi_f = 0.1%) or in ortho-position (TPE-4oM, phi_f = 64...
March 20, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28314487/the-phi-ghfp-ii-employers-study-the-hidden-barriers-between-domestic-and-global-health-careers-and-crucial-competencies-for-success
#14
Sharon Rudy, Natasha Wanchek, David Godsted, Morgan Blackburn, Elise Mann
BACKGROUND: An ongoing discussion in global health in the United States centers on the future of the US-trained global health workforce and how best to prepare professionals for this career path. The Public Health Institute, through its Global Health Fellows Program (I and II), has been in a unique position to identify the shifting employment dynamic in global health. OBJECTIVES: The purpose of the survey was to gather information on global health employers' hiring practices and insights into the importance of nonclinical skills in contributing to successful professional work; preparedness of graduates with needed nonclinical skills; and the value of domestic work experience for global health careers...
November 2016: Annals of Global Health
https://www.readbyqxmd.com/read/28306653/new-scoring-system-for-evaluating-patulous-eustachian-tube-patients
#15
Ryoukichi Ikeda, Toshiaki Kikuchi, Hidetoshi Oshima, Hiromitsu Miyazaki, Hiroshi Hidaka, Tetsuaki Kawase, Yukio Katori, Toshimitsu Kobayashi
OBJECTIVE: To assess the efficacy of patulous Eustachian tube handicap inventory (PHI) for patulous Eustachian tube (PET) patients. STUDY DESIGN: Prospective. SETTING: Tertiary referral center. SUBJECTS: A prospective survey of medical records in Sen-En Hospital identified 31 ears of 31 patients with definite PET who received insertion of the silicone plug as surgical treatment group, 29 ears of 29 patients treated with self-instillation of physiological saline solution as conservative treatment group, and 29 ears of 29 patients of sensorineural hearing loss without findings of PET treated between June 2015 and December 2015...
March 16, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28301179/a-meta-analysis-of-self-monitoring-on-reading-performance-of-k-12-students
#16
Guadalupe Guzman, Taryn S Goldberg, H Lee Swanson
The published single-case design (SCD) research (N = 19 articles) on self-monitoring and reading performance was synthesized. The following inclusion criteria were used: (a) the study must have been peer-reviewed, (b) implemented an intervention targeting student self-monitoring of reading skills, (c) included data on at least 1 reading outcome, (d) included visual representation of the data, and (f) the study must have used an SCD to assess the topic of interest. A total of 67 participants, 45 males and 22 females, ranging in age from 7:8 -18:7 were included in the current meta-analysis...
March 16, 2017: School Psychology Quarterly
https://www.readbyqxmd.com/read/28296420/conformational-populations-of-%C3%AE-1%C3%A2-4-o-glycosidic-linkages-using-redundant-nmr-j-couplings-and-circular-statistics
#17
Wenhui Zhang, Toby Turney, Reagan Meredith, Qingfeng Pan, Luke Sernau, Xiaocong Wang, Xiaosong Hu, Robert J Woods, Ian Carmichael, Anthony Stephen Serianni
Twelve disaccharides containing β-(1→4) linkages and displaying systematic structural variations in the vicinity of these linkages were selectively labeled with 13C to facilitate measurements of multiple NMR spin-spin (scalar; J) coupling constants (JCH and JCC values) across their O-glycosidic linkages. Ensembles of spin-couplings (2JCOC, 3JCOCH, 3JCOCC) sensitive to the two linkage torsion angles, phi (φ) and psi (ψ), were analyzed using parameterized equations obtained from density functional theory (DFT) calculations, Fredholm theory, and circular statistics to calculate experiment-based rotamer populations for φ and ψ in each disaccharide...
March 15, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28292464/intracellular-acidification-increases-adenosine-transport-in-human-umbilical-vein-endothelial-cells
#18
Natalia Celis, Joaquín Araos, Carlos Sanhueza, Fernando Toledo, Ana R Beltrán, Fabián Pardo, Andrea Leiva, Marco A Ramírez, Luis Sobrevia
INTRODUCTION: Adenosine is taken up via human equilibrative nucleoside transporters 1 (hENT1) and 2 (hENT2) at a physiological extracellular pH (pHo ∼7.4) in human umbilical vein endothelial cells (HUVECs). Acidic pHo increases the uptake of adenosine and 5-hydroxytryptamine (5HT) via hENT4 in this cell type. However, modulation of hENT1 and hENT2 transport activity by the pHi is unknown. We investigated whether hENT1 and hENT2-adenosine transport was regulated by acidic pHi. METHODS: HUVECs loaded with a pH sensitive probe were subjected to 0...
March 2017: Placenta
https://www.readbyqxmd.com/read/28291421/modification-of-surgical-procedure-for-probable-limited-dorsal-myeloschisis
#19
Ji Yeoun Lee, Sangjoon Chong, Young Hun Choi, Ji Hoon Phi, Jung-Eun Cheon, Seung-Ki Kim, Sung Hye Park, In-One Kim, Kyu-Chang Wang
OBJECTIVE Since the entity limited dorsal myeloschisis (LDM) was proposed, numerous confusing clinical cases have been renamed according to the embryopathogenesis. However, clinical application of this label appears to require some clarification with regard to pathology. There have been cases in which all criteria for the diagnosis of LDM were met except for the presence of a neural component in the stalk, an entity the authors call "probable" LDM. The present study was performed to meticulously review these cases and suggest that a modified surgical strategy using limited laminectomy is sufficient to achieve the surgical goal of untethering...
February 17, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28284060/phosphite-shifts-physiological-and-hormonal-profile-of-monterey-pine-and-delays-fusarium-circinatum-progression
#20
Andreia Cerqueira, Artur Alves, Helder Berenguer, Barbara Correia, Aurelio Gómez-Cadenas, Julio Javier Diez, Pedro Monteiro, Glória Pinto
Fusarium circinatum is the causal agent of pitch canker disease affecting Pinus spp. and Pseudotsuga menziesii worldwide. Under strict quarantine measures, alternative approaches for disease control are necessary. Phosphite (Phi) salts are known for their fungicidal activity and as plant resistance elicitors; however, its potential is yet to be acknowledged in the Pinus-F. circinatum model. The main aim of this study was to assess whether the application of a Phi-based commercial formulation would delay the progression of the pitch canker on Pinus radiata plants, and on the in vitro fungal growth...
February 27, 2017: Plant Physiology and Biochemistry: PPB
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