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https://www.readbyqxmd.com/read/28732382/novel-strategies-to-prevent-the-development-of-multidrug-resistance-mdr-in-cancer
#1
REVIEW
Jinglu Wang, Nicole Seebacher, Huirong Shi, Quancheng Kan, Zhenfeng Duan
The development of multidrug resistance (MDR) is one of the major challenges to the success of traditional chemotherapy treatment in cancer patients. Most studies to date have focused on strategies to reverse MDR following its development. However, agents utilizing this approach have proven to be of limited clinical use, failing to demonstrate an improvement in therapeutic efficacy with almost no significant survival benefits observed in cancer clinical trials. An alternative approach that has been applied is to prevent or delay MDR prior or early in its development...
July 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28732275/plot-farm-and-watershed-scale-effects-of-coffee-cultivation-in-runoff-and-sediment-production-in-western-puerto-rico
#2
Carlos E Ramos-Scharrón, Yasiel Figueroa-Sánchez
The combination of a topographically abrupt wet-tropical setting with the high level of soil exposure that typifies many sun-grown coffee farms represents optimal conditions for high erosion rates. Although traditionally considered as a main cause for water resource degradation, limited empirical evidence has existed to document its true contribution. This study relies on plot-scale experimental results conducted in western Puerto Rico to assess the impact of cultivated surfaces and farm access roads on runoff and sediment production from the plot to the farm and watershed scales...
July 18, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28732126/chinese-isms-dimensions-in-mainland-china-and-taiwan-convergence-and-extension-of-american-isms-dimensions
#3
Zhuo Job Chen, Kung-Yu Hsu, Xinyue Zhou, Gerard Saucier
OBJECTIVE: Previous studies of American-English isms terms have uncovered as many as five broad factors: Tradition-oriented Religiousness (TR), Subjective Spirituality (SS), Communal Rationalism (CR), Unmitigated Self-Interest (USI), and Inequality Aversion (IA). The present studies took a similar lexical approach to investigate the Chinese-language isms structures in both mainland China and Taiwan. METHOD AND RESULTS: In Study 1, exploratory factor analyses with 915 mainland Chinese subjects uncovered four interpretable factors dimensionalizing 165 mainland Chinese dictionary isms terms...
July 21, 2017: Journal of Personality
https://www.readbyqxmd.com/read/28732033/spatial-and-simultaneous-representative-seroprevalence-of-anti-toxoplasma-gondii-antibodies-in-owners-and-their-domiciled-dogs-in-a-major-city-of-southern-brazil
#4
Aline do Nascimento Benitez, Felippe Danyel Cardoso Martins, Marcelle Mareze, Nelson Jessé Rodrigues Santos, Fernanda Pinto Ferreira, Camila Marinelli Martins, João Luis Garcia, Regina Mitsuka-Breganó, Roberta Lemos Freire, Alexander Welker Biondo, Italmar Teodorico Navarro
Toxoplasmosis, caused by Toxoplasma gondii, has traditionally been considered an important water and foodborne protozoonosis with important public health considerations. Although felids play a well-established role as definitive hosts, canine epidemiological involvement in the parasite's life cycle remains questionable and controversial. The increasing closeness of the human-dog bond, particularly seen in urban settings, has been recognized as a historically unprecedented worldwide movement. Sharing daily lives in the same households, dogs may be exposed to similar associated risks of T...
2017: PloS One
https://www.readbyqxmd.com/read/28731396/contralateral-posterior-interhemispheric-approach-to-deep-medial-parietooccipital-vascular-malformations-surgical-technique-and-results
#5
Jan-Karl Burkhardt, Ethan A Winkler, Michael T Lawton
OBJECTIVE Deep medial parietooccipital arteriovenous malformations (AVMs) and cerebral cavernous malformations (CCMs) are traditionally resected through an ipsilateral posterior interhemispheric approach (IPIA), which creates a deep, perpendicular perspective with limited access to the lateral margins of the lesion. The contralateral posterior interhemispheric approach (CPIA) flips the positioning, with the midline positioned horizontally for retraction due to gravity, but with the AVM on the upper side and the approach from the contralateral, lower side...
July 21, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28731101/selective-molecular-annealing-in-situ-small-angle-x-ray-scattering-study-of-microwave-assisted-annealing-of-block-copolymers
#6
Daniel T W Toolan, Kevin Adlington, Anna Isakova, Alexis Kalamiotis, Parvaneh Mokarian-Tabari, Georgios Dimitrakis, Christopher Dodds, Thomas Arnold, Nick J Terrill, Wim Bras, Daniel Hermida Merino, Paul D Topham, Derek J Irvine, Jonathan R Howse
Microwave annealing has emerged as an alternative to traditional thermal annealing approaches for optimising block copolymer self-assembly. A novel sample environment enabling small angle X-ray scattering to be performed in situ during microwave annealing is demonstrated, which has enabled, for the first time, the direct study of the effects of microwave annealing upon the self-assembly behavior of a model, commercial triblock copolymer system [polystyrene-block-poly(ethylene-co-butylene)-block-polystyrene]...
July 21, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28730944/integrating-bioassays-and-analytical-chemistry-as-an-improved-approach-to-support-safety-assessment-of-food-contact-materials
#7
Julien Veyrand, Maricel Marin-Kuan, Claudine Bezencon, Nancy Frank, Violaine Guérin, Sander Koster, Hélia Latado, Julie Mollergues, Amaury Patin, Dominique Piguet, Patrick Serrant, Jesus Varela, Benoît Schilter
Food contact materials (FCM) contain chemicals which can migrate into food and result in human exposure. Although it is mandatory to ensure that migration does not endanger human health, there is still no consensus on how to pragmatically assess the safety of FCM since traditional approaches would require extensive toxicological and analytical testing which are expensive and time consuming. Recently, the combination of bioassays, analytical chemistry and risk assessment has been promoted as a new paradigm to identify toxicologically relevant molecules and address safety issues...
July 21, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28730472/quantification-of-cell-signaling-networks-using-kinase-activity-chemosensors
#8
Jon R Beck, Edward N Harris, Cliff I Stains
The ability to directly determine endogenous kinase activity in tissue homogenates provides valuable insights into signaling aberrations that underlie disease phenotypes. When activity data is collected across a panel of kinases, a unique "signaling fingerprint" is generated that allows for discrimination between diseased and normal tissue. Here we describe the use of peptide-based kinase activity sensors to fingerprint the signaling changes associated with disease states. This approach leverages the phosphorylation-sensitive sulfonamido-oxine (Sox) fluorophore to provide a direct readout of kinase enzymatic activity in unfractionated tissue homogenates from animal models or clinical samples...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28730303/exhaled-breath-online-measurement-for-cervical-cancer-patients-and-healthy-subjects-by-proton-transfer-reaction-mass-spectrometry
#9
Wenzhao Zhou, Chaoqun Huang, Xue Zou, Yan Lu, Chengyin Shen, Xiping Ding, Hongzhi Wang, Haihe Jiang, Yannan Chu
Cervical cancer is a common cancer among women and has a high morbidity and mortality. The traditional clinical methods for cervical cancer screening are invasive and limited in terms of cost and time. There is an unmet clinical need for new methods to aid clinicians in the rapid screening and auxiliary diagnosis of cervical precancer. Recently, breath analysis has become an attractive approach for investigation of cancer biomarkers and shows great potential in cancer screening owing to its high sensitivity, quickness, and non-invasive nature...
July 20, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28729901/aptamer-functionalized-neural-recording-electrodes-for-the-direct-measurement-of-cocaine-in-vivo
#10
I Mitch Taylor, Zhanhong Du, Emma T Bigelow, James R Eles, Anthony R Horner, Kasey A Catt, Stephen G Weber, Brian G Jamieson, X Tracy Cui
Cocaine is a highly addictive psychostimulant that acts through competitive inhibition of the dopamine transporter. In order to fully understand the region specific neuropathology of cocaine abuse and addiction, it is unequivocally necessary to develop cocaine sensing technology capable of directly measuring real-time cocaine transient events local to different brain regions throughout the pharmacokinetic time course of exposure. We have developed an electrochemical aptamer-based in vivo cocaine sensor on a silicon based neural recording probe platform capable of directly measuring cocaine from discrete brain locations using square wave voltammetry (SWV)...
April 7, 2017: Journal of Materials Chemistry. B, Materials for Biology and Medicine
https://www.readbyqxmd.com/read/28729584/using-virtual-microscopy-to-deliver-an-integrated-oral-pathology-course-for-undergraduate-dental-students
#11
D J Brierley, P M Speight, K D Hunter, P Farthing
Dental students in the United Kingdom usually study histopathology as part of their undergraduate curriculum and this has traditionally been delivered using light microscopes in laboratory classes. Beginning in 2005, the oral pathology course in Sheffield was gradually modified by the introduction of virtual microscopy with a focus on creating a more integrated, clinically orientated and dynamic approach to student teaching and learning in histopathology. The purpose of this paper is to describe how virtual microscopy has been used to enhance dental students' learning of oral pathology, and its role in facilitating an integrated oral disease curriculum in Sheffield...
July 21, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28729162/effect-of-3basic-life-support-training-programs-in-future-primary-school-teachers-a-quasi-experimental-design
#12
R Navarro-Patón, M Freire-Tellado, S Basanta-Camiño, R Barcala-Furelos, V Arufe-Giraldez, J E Rodriguez-Fernández
AIM: To evaluate the learning of basic life support (BLS) measures on the part of laypersons after 3different teaching programs. DESIGN: A quasi-experimental before-after study involving a non-probabilistic sample without a control group was carried out. SCOPE: Primary school teacher students from the University of Santiago (Spain). PARTICIPANTS: A total of 124 students (68.8% women and 31.2% men) aged 20-39 years (M=22...
July 17, 2017: Medicina Intensiva
https://www.readbyqxmd.com/read/28729003/the-effects-of-an-activity-promotion-system-on-active-living-in-overweight-subjects-with-metabolic-abnormalities
#13
Ya-Ping Yang, Chi-Jane Wang, Jing-Jy Wang, Che-Wei Lin, Ya-Ting Carolyn Yang, Jeen-Shing Wang, Yen Kuang Yang, Yi-Ching Yang
OBJECTIVES: The aim of this study is to examine the effects of Activity Promotion System (APs) on promoting physical activity (PA) for overweight subjects with metabolic abnormalities. METHODS: We designed a six-month randomised controlled trial with a cross-over design, and recruited 53 subjects. Subjects in group A used APs with a wearable device measuring whole-day PA, including sleep time, sedentary, light, moderate and vigorous PA and a web-based feedback system in the first three months and followed by usual care with traditional health education in the next three months...
July 17, 2017: Obesity Research & Clinical Practice
https://www.readbyqxmd.com/read/28728997/sepsis-reconsidered-identifying-novel-metrics-for-behavioral-landscape-characterization-with-a-high-performance-computing-implementation-of-an-agent-based-model
#14
Chase Cockrell, Gary An
OBJECTIVES: Sepsis affects nearly 1 million people in the United States per year, has a mortality rate of 28-50% and requires more than $20 billion a year in hospital costs. Over a quarter century of research has not yielded a single reliable diagnostic test or a directed therapeutic agent for sepsis. Central to this insufficiency is the fact that sepsis remains a clinical/physiological diagnosis representing a multitude of molecularly heterogeneous pathological trajectories. Advances in computational capabilities offered by High Performance Computing (HPC) platforms call for an evolution in the investigation of sepsis to attempt to define the boundaries of traditional research (bench, clinical and computational) through the use of computational proxy models...
July 17, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28728971/a-multi-objective-optimization-approach-for-the-selection-of-working-fluids-of-geothermal-facilities-economic-environmental-and-social-aspects
#15
Juan Martínez-Gomez, Javier Peña-Lamas, Mariano Martín, José María Ponce-Ortega
The selection of the working fluid for Organic Rankine Cycles has traditionally been addressed from systematic heuristic methods, which perform a characterization and prior selection considering mainly one objective, thus avoiding a selection considering simultaneously the objectives related to sustainability and safety. The objective of this work is to propose a methodology for the optimal selection of the working fluid for Organic Rankine Cycles. The model is presented as a multi-objective approach, which simultaneously considers the economic, environmental and safety aspects...
July 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28728425/qatari-intersections-with-global-genetics-research-and-discourse
#16
Susie Kilshaw
Genetic discourses have taken a predominant role in approaches to combating a number of conditions that affect Qataris. This paper is derived from an exploration of Qatari encounters with globalizing discourses of genetics, particularly as they relate to notions of risk. It explores Qataris negotiations of global interactions and influences, including the discourses around genetic risk and cousin marriage. It suggests that family marriage can be seen as one of the main platforms of resistance and a means for modern, cosmopolitan and tradition to be negotiated...
July 21, 2017: Anthropology & Medicine
https://www.readbyqxmd.com/read/28727773/the-tradition-algorithm-approach-underestimates-the-prevalence-of-serodiagnosis-of-syphilis-in-hiv-infected-individuals
#17
Bin Chen, Xiuming Peng, Tiansheng Xie, Changzhong Jin, Fumin Liu, Nanping Wu
Currently, there are three algorithms for screening of syphilis: traditional algorithm, reverse algorithm and European Centre for Disease Prevention and Control (ECDC) algorithm. To date, there is not a generally recognized diagnostic algorithm. When syphilis meets HIV, the situation is even more complex. To evaluate their screening performance and impact on the seroprevalence of syphilis in HIV-infected individuals, we conducted a cross-sectional study included 865 serum samples from HIV-infected patients in a tertiary hospital...
July 20, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28727709/transforaminal-percutaneous-endoscopic-discectomy-and-foraminoplasty-after-lumbar-spinal-fusion-surgery
#18
Jian-Jun Wu, Hui-Zhen Chen, Changkun Zheng
BACKGROUND: The most common causes of pain following lumbar spinal fusions are residual herniation, or foraminal fibrosis and foraminal stenosis that is ignored, untreated, or undertreated. The original surgeon may advise his patient that nothing more can be done in his opinion that the nerve was visually decompressed by the original surgery. Post-operative imaging or electrophysiological assessment may be inadequate to explain all the reasons for residual or recurrent symptoms. Treatment of failed lumbar spinal fusions by repeat traditional open revision surgery usually incorporates more extensive decompression causing increased instability and back pain...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28727637/evaluation-and-student-perceptions-of-an-ob-boot-camp-simulation-for-undergraduate-nursing-students-a-mixed-method-approach
#19
Cynthia S Crews, Lisa C Minor
Obstetrical nursing offers unique challenges as a specialty clinical area as the process of birth and the nature of the setting are unpredictable. Traditional undergraduate baccalaureate nursing students may not have experience with maternal/newborn care. An eight-hour OB Boot Camp was developed to prepare students for their first obstetrical clinical rotation. An explanatory sequential mixed-method research study was used to explore student perceptions and evaluate the experience. On the basis of the results of this research study, the OB Boot Camp was a valuable instructional method to prepare students for obstetrical clinical rotations and coursework...
July 19, 2017: Nursing Education Perspectives
https://www.readbyqxmd.com/read/28727565/danoc-an-efficient-algorithm-and-hardware-codesign-of-deep-neural-networks-on-chip
#20
Xichuan Zhou, Shengli Li, Fang Tang, Shengdong Hu, Zhi Lin, Lei Zhang
Deep neural networks (NNs) are the state-of-the-art models for understanding the content of images and videos. However, implementing deep NNs in embedded systems is a challenging task, e.g., a typical deep belief network could exhaust gigabytes of memory and result in bandwidth and computational bottlenecks. To address this challenge, this paper presents an algorithm and hardware codesign for efficient deep neural computation. A hardware-oriented deep learning algorithm, named the deep adaptive network, is proposed to explore the sparsity of neural connections...
July 18, 2017: IEEE Transactions on Neural Networks and Learning Systems
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