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https://www.readbyqxmd.com/read/29334624/adequate-vitamin-d3-skin-synthesis-versus-erythema-risk-in-the-northern-hemisphere-midlatitudes
#1
Jakub Guzikowski, Janusz Krzyścin, Agnieszka Czerwińska, Weronika Raszewska
Health-optimum-exposure index (HOEI) is proposed to assess if the prescribed amount of vitamin D3 (target value) could be synthesized in the human skin without erythema appearance. It is defined as the ratio between the vitamin D3 quantity received during the maximum allowed outdoor exposure without erythema risk and the target value. Sunbathing is safe for HOEI>1 and 1/HOEI represents a part of minimal erythema dose (MED) necessary to obtain the target value. We examine the following targets: a vitamin D3 quantity equivalent to 1000 IU vitamin D3 taken orally, and an optimal vitamin D3 quantity defined by Krzyścin et al...
January 11, 2018: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29334558/comment-on-a-propensity-score-matched-analysis-of-open-versus-minimally-invasive-transthoracic-esophagectomy-in-the-netherlands
#2
Miguel A Cuesta, Jennifer Straatman, Donald L van der Peet
No abstract text is available yet for this article.
January 12, 2018: Annals of Surgery
https://www.readbyqxmd.com/read/29334527/transanal-minimally-invasive-anal-canal-polyp-resection
#3
Giovanni Dapri, Anny Cadenas Fabres, Olivier Nicod, Garces Duran Rodrigo, Vinciane Muls, Marc Van Gossum
Endoscopic mucosal resection and endoscopic submucosal dissection (ESD) are operative endoscopies that have been performed since a long time. Recently, an evolution of laparoscopy called transanal minimally invasive surgery began to be popularized, and it can be adopted in the face of difficult cases for endoscopic mucosal resection/ESD. In this video, a 36-year-old woman was submitted to transanal minimally invasive surgery resection, after unsuccessful ESD, for a 2-cm polyp located anteriorly in the anal canal, just beyond the pectineal line...
January 12, 2018: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/29334495/the-ethics-of-interventional-procedures-for-patients-too-ill-for-surgery
#4
Caroline G Kan, Michael Nurok
PURPOSE OF REVIEW: Minimally invasive interventional procedures are increasingly popular options for patients who are high-risk candidates for open surgical procedures. It is unclear how to proceed in the rare circumstance of a complication during an interventional procedure, where addressing the complication would require exposing the patient to the full risk that was being avoided with the minimally invasive technique. This review provides recommendations on how to approach this paradoxical scenario...
January 12, 2018: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/29334446/pediatric-community-acquired-pneumonia
#5
Stephanie Posten, Jennifer Reed
Pediatric community acquired pneumonia (CAP) is frequently encountered by medical providers and is one of the most common reasons for hospital admission. CAP is known to cause significant morbidity and mortality, causing greater than 2 million deaths annually worldwide in children younger than five years old. The Infectious Disease Society of America (IDSA) released guidelines in 2011 with recommendations regarding appropriate diagnosis and management of community acquired pneumonia for children greater than 3 months age, with the goal of assisting providers in clinical decision making...
December 2017: South Dakota Medicine: the Journal of the South Dakota State Medical Association
https://www.readbyqxmd.com/read/29334421/a-survey-of-tooth-morphology-teaching-methods-employed-in-the-united-kingdom-and-ireland
#6
M Lone, J P McKenna, J F Cryan, E J Downer, A Toulouse
BACKGROUND: Tooth morphology is a central component of the dental curriculum and is applicable to all dental specialities. Traditional teaching methods are being supplemented with innovative strategies to tailor teaching and accommodate the learning styles of the recent generation of students. METHODS: An online survey was compiled and distributed to the staff involved in teaching tooth morphology in the United Kingdom and Ireland to assess the importance of tooth morphology in the dentistry curriculum and the methodologies employed in teaching...
January 15, 2018: European Journal of Dental Education: Official Journal of the Association for Dental Education in Europe
https://www.readbyqxmd.com/read/29334396/towards-the-continuous-production-of-pt-based-heterogeneous-catalysts-using-microfluidic-systems
#7
Uson Laura, Manuel Arruebo, Victor Sebastian
The continuous production of Pt-based heterogeneous catalysts based on ultra-small (<2 nm) noble metal nanoparticles deposited on mesoporous ordered silica and their catalytic activity in VOC abatement are here reported. Microfluidic reactors can be used not only to enable the fast and controlled production of ultra-small Pt nanoparticles (NPs), but also alloyed NPs including PtPd, PtRu and PtRh can be formed in short residence times (between 60 s and 5 min). A novel continuous and homogeneous loading of these catalytic NPs on SBA-15 used as a mesoporous support is also here reported...
January 15, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29334189/a-multifunctional-micellar-nanoplatform-with-ph-triggered-cell-penetration-and-nuclear-targeting-for-effective-cancer-therapy-and-inhibition-to-lung-metastasis
#8
Yuting Jing, Xiang Xiong, Yang Ming, Jingya Zhao, Xing Guo, Guang Yang, Shaobing Zhou
The enhancement of cellular internalization and subsequent achievement of a nuclear targeting of nanocarriers play an important role in maximizing the therapeutic potency and minimizing the side effects of encapsulated drugs. Herein, a multifunctional micellar nanoplatform simultaneously with high cell penetration and nuclear targeting through pH-triggered surface charge reversal is presented. The miscellar system is constructed from poly(ethylene glycol)-poly(ε-caprolactone) with 2,3-dimethylmaleic anhydride-Tat decoration (PECL/DA-Tat)...
January 15, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29334170/representing-causal-knowledge-in-environmental-policy-interventions-advantages-and-opportunities-for-qualitative-influence-diagram-applications
#9
John F Carriger, Brian E Dyson, William H Benson
This article develops and explores a methodology for using qualitative influence diagrams in environmental policy and management to support decision making efforts that minimize risk and increase resiliency. Influence diagrams are representations of the conditional aspects of a problem domain. Their graphical properties are useful for structuring causal knowledge relevant to policy interventions and can be used to enhance inference and inclusivity of multiple viewpoints. Qualitative components of influence diagrams are beneficial tools for identifying and examining the interactions among the critical variables in complex policy development and implementation...
January 15, 2018: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/29334168/representing-causal-knowledge-in-environmental-policy-interventions-advantages-and-opportunities-for-qualitative-influence-diagram-applications
#10
John F Carriger, Brian E Dyson, William H Benson
This article develops and explores a methodology for using qualitative influence diagrams in environmental policy and management to support decision making efforts that minimize risk and increase resiliency. Influence diagrams are representations of the conditional aspects of a problem domain. Their graphical properties are useful for structuring causal knowledge relevant to policy interventions and can be used to enhance inference and inclusivity of multiple viewpoints. Qualitative components of influence diagrams are beneficial tools for identifying and examining the interactions among the critical variables in complex policy development and implementation...
January 15, 2018: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/29334139/interleaved-susceptibility-weighted-and-flair-mri-for-imaging-lesion-penetrating-veins-in-multiple-sclerosis
#11
Refaat E Gabr, Amol S Pednekar, Arash Kamali, John A Lincoln, Flavia M Nelson, Jerry S Wolinsky, Ponnada A Narayana
PURPOSE: To simultaneously image brain lesions and veins in multiple sclerosis. METHODS: An interleaved sequence was developed to simultaneously acquire 3-dimensional T2*-weighted (or susceptibility-weighted (SW)) and fluid-attenuated inversion recovery (FLAIR) images on a 3T MRI system. The pulse sequence parameters were calculated to minimize signal perturbation from steady state while maintaining acceptable image contrast and scan time. Fifteen multiple sclerosis patients were enrolled in this prospective study and underwent a standard multiple sclerosis imaging protocol...
January 15, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29334134/a-comprehensive-next-generation-sequencing-assay-for-the-diagnosis-of-epidermolysis-bullosa
#12
Anne W Lucky, Neha Dagaonkar, Karen Lammers, Ammar Husami, Diane Kissell, Kejian Zhang
BACKGROUND: Historically, diagnosis of epidermolysis bullosa has required skin biopsies for electron microscopy, direct immunofluorescence to determine which gene(s) to choose for genetic testing, or both. METHODS: To avoid these invasive tests, we developed a high-throughput next-generation sequencing (NGS)-based diagnostic assay called EBSEQ that allows simultaneous detection of mutations in 21 genes with known roles in epidermolysis bullosa pathogenicity. Mutations are confirmed with traditional Sanger sequencing...
January 15, 2018: Pediatric Dermatology
https://www.readbyqxmd.com/read/29334092/synthetic-cells-produce-a-quorum-sensing-chemical-signal-perceived-by-pseudomonas-aeruginosa
#13
Giordano Rampioni, Francesca D'Angelo, Marco Messina, Alessandro Zennaro, Yutetsu Kuruma, Daniela Tofani, Livia Leoni, Pasquale Stano
Recent developments in bottom-up synthetic biology (e.g., lipid vesicle technology integrated with cell-free protein expression systems) allow the generation of semi-synthetic minimal cells (in short, synthetic cells, SCs) endowed with some distinctive capacities of natural cells. In particular, such approaches provide technological tools and conceptual frameworks for the design and engineering of programmable SCs capable of communicating with natural cells by exchanging chemical signals. Here we describe the generation of giant vesicle-based SCs which, via gene expression, synthesize in their aqueous lumen an enzyme that in turn produces a chemical signal...
January 15, 2018: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29334090/supramolecular-photosensitizers-rejuvenate-photodynamic-therapy
#14
Xingshu Li, Songyi Lee, Juyoung Yoon
Owing to its spatiotemporal selectivity and noninvasive nature, photodynamic therapy (PDT) has become a clinically promising approach for the treatment of a wide range of cancers and other diseases. However, the full potential of PDT has not been achieved thus far as a consequence of the lack of optimal photosensitizers (PSs) and/or smart transport/activation strategies. These problems, which unfortunately lie at the core of the PDT paradigm, include the oxygen reliance limits, the effect of PDT on hypoxic tumors, limitations of light penetration, and undesired skin photosensitization induced by "always on" PSs...
January 15, 2018: Chemical Society Reviews
https://www.readbyqxmd.com/read/29334038/robotic-assisted-and-image-guided-mri-compatible-stereoelectroencephalography
#15
Jeffery A Hall, Hui Ming Khoo
BACKGROUND: Stereoelectroencephalography has been in regular use at the Montreal Neurological Institute since 1972. The technique has been in constant evolution to incorporate advances in materials, imaging, and robotics technology. MRI-compatible electrodes were introduced in 2007 and robotics in 2011. Here we report on the technique, safety, and advantages of our current method of stereoelectroencephalography implantation. METHODS: We retrospectively reviewed all patients who underwent stereoelectroencephalography by the senior author...
January 2018: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/29334013/understanding-teacher-change-a-national-survey-of-u-s-physical-educators
#16
Ben D Kern, Kim C Graber
Physical education is critical to addressing childhood obesity, yet many school-based programs do not meet established quality standards and teachers are called upon to change. Little is known about how change is initiated and its associated internal and external factors. PURPOSE: The purpose of this study was to investigate physical education teacher change that was self-initiated and externally initiated and to examine dispositions toward the change process relative to initiation. METHOD: A random national sample of physical educators representing each SHAPE America - Society of Health and Physical Educators regional district participated in a survey measuring past programming changes, primary initiators of change, and teachers' dispositions toward change...
January 15, 2018: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/29333959/a-noninvasive-body-setup-method-for-radiotherapy-by-using-a-multimodal-image-fusion-technique
#17
Jie Zhang, Ying Chen, Yunxia Chen, Chenchen Wang, Jing Cai, Kaiyue Chu, Jianhua Jin, Yun Ge, Xiaolin Huang, Yue Guan, Weifeng Li
PURPOSE: To minimize the mismatch error between patient surface and immobilization system for tumor location by a noninvasive patient setup method. MATERIALS AND METHODS: The method, based on a point set registration, proposes a shift for patient positioning by integrating information of the computed tomography scans and that of optical surface landmarks. An evaluation of the method included 3 areas: (1) a validation on a phantom by estimating 100 known mismatch errors between patient surface and immobilization system...
December 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/29333914/hybrid-pet-mri-imaging-in-healthy-unsedated-newborn-infants-with-quantitative-rcbf-measurements-using-15o-water-pet
#18
Julie B Andersen, Ulrich Lindberg, Oline V Olesen, Didier Benoit, Claes N Ladefoged, Henrik Bw Larsson, Liselotte Højgaard, Gorm Greisen, Ian Law
In this study, a new hybrid PET/MRI method for quantitative regional cerebral blood flow (rCBF) measurements in healthy newborn infants was assessed and the low values of rCBF in white matter previously obtained by arterial spin labeling (ASL) were tested. Four healthy full-term newborn subjects were scanned in a PET/MRI scanner during natural sleep after median intravenous injection of 14 MBq 15O-water. Regional CBF was quantified using a one-tissue-compartment model employing an image-derived input function (IDIF) from the left ventricle...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29333871/drug-monitoring-by-volumetric-absorptive-microsampling-method-development-considerations-to-mitigate-hematocrit-effects
#19
Kasie Fang, Chester L Bowen, John Kellie, Molly Karlinsey, Christopher Evans
AIM: GSKA is a compound that was in development in clinical trials. A bioanalysis method to quantify GSKA using volumetric absorptive microsampling (VAMS) was developed and hematocrit (HCT) related assay bias was investigated. METHODOLOGY: After accurate sampling of 10 μl blood, VAMS tips were air dried approximately 18 h and desorbed by an aqueous solution containing internal standard. The recovered blood underwent liquid-liquid extraction in ethyl acetate to minimize matrix suppression...
January 15, 2018: Bioanalysis
https://www.readbyqxmd.com/read/29333859/chromatographic-separation-and-visual-detection-on-wicking-microfluidic-devices-quantitation-of-cu2-in-surface-ground-and-drinking-water
#20
Gayan C Bandara, Christopher Heist, Vincent T Remcho
Copper is widely applied in industrial and technological applications, and is an essential micro nutrient for humans and animals. However, exposure to high environmental levels of copper, especially through drinking water, can lead to copper toxicity, resulting in severe acute and chronic health effects. Therefore, regular monitoring of aqueous copper ions has become necessary as recent anthropogenic activities have led to elevated environmental concentrations of copper. On-site monitoring processes require an inexpensive, simple, and portable analytical approach capable of generating reliable qualitative and quantitative data efficiently...
January 15, 2018: Analytical Chemistry
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