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https://www.readbyqxmd.com/read/29786957/statistical-approaches-to-adjusting-weights-for-dependent-arms-in-network-meta-analysis
#1
Yu-Xuan Su, Yu-Kang Tu
Network meta-analysis compares multiple treatments in terms of their efficacy and harm by including evidence from randomized controlled trials. Most clinical trials use parallel design, where patients are randomly allocated to different treatments and receive only one treatment. However, some trials use within person designs such as split-body, split-mouth and cross-over designs, where each patient may receive more than one treatment. Data from treatment arms within these trials are no longer independent, so the correlations between dependent arms need to be accounted for within the statistical analyses...
May 22, 2018: Research Synthesis Methods
https://www.readbyqxmd.com/read/29786932/bandgap-tunable-preparation-of-smooth-and-large-two-dimensional-antimonene
#2
Xin Wang, Junjie He, Benqing Zhou, Youming Zhang, Jiatao Wu, Rui Hu, Liwei Liu, Jun Song, Junle Qu
As a highly stable bandgap semiconductor, antimonene is an intriguing two-dimensional (2D) material in optoelectronics. However, its short layer distance and strong binding energy make it challenging to prepare high-quality large 2D antimonene; therefore, its predicted tunable bandgap has not been experimentally confirmed. In this work, we used a novel and simple approach to prepare smooth and large 2D antimonene with uniform layers through a pregrinding and subsequent sonication-assisted liquid-phase exfoliation process...
May 22, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29786900/avian-demographic-responses-to-drought-and-fire-a-community-level-perspective
#3
James F Saracco, Stephen M Fettig, George L San Miguel, David W Mehlman, Steven K Albert
Drought stress is an important consideration for wildlife in arid and semi-arid regions under climate change. Drought can impact plant and animal populations directly, through effects on their physiology, as well as indirectly through effects on vegetation productivity and resource availability, and by creating conditions conducive to secondary disturbance, such as wildfire. We implemented a novel approach to understanding community-level demographic responses of birds and their habitats to these stressors in the context of climate change at 14 study sites in the Four Corners region of the southwestern United States...
May 22, 2018: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/29786887/perovskite-solar-cells-with-inorganic-electron-and-hole-transport-layers-exhibiting-long-term-%C3%A2-500-h-stability-at-85-%C3%A2-c-under-continuous-1-sun-illumination-in-ambient-air
#4
Seongrok Seo, Seonghwa Jeong, Changdeuck Bae, Nam-Gyu Park, Hyunjung Shin
Despite the high power conversion efficiency (PCE) of perovskite solar cells (PSCs), poor long-term stability is one of the main obstacles preventing their commercialization. Several approaches to enhance the stability of PSCs have been proposed. However, an accelerating stability test of PSCs at high temperature under the operating conditions in ambient air remains still to be demonstrated. Herein, interface-engineered stable PSCs with inorganic charge-transport layers are shown. The highly conductive Al-doped ZnO films act as efficient electron-transporting layers as well as dense passivation layers...
May 22, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29786796/techniques-for-evaluation-of-ar-transcriptional-output-and-recruitment-to-dna
#5
Manqi Zhang, William C Krause, Irina U Agoulnik
Steroid receptors are ligand activated transcription factors whose promoter specificity is regulated by a broad set of coregulators and pioneer factors. Corepressors and coactivators determine receptors' recruitment to specific regulatory elements and ultimately their transcriptional output. Using androgen receptor (AR) and NCOR1 corepressor as examples, this chapter describes experimental approaches to evaluate recruitment of steroid receptors and their coregulators to DNA and to determine coregulator contribution to the transcriptional output of the receptor...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29786795/protocols-for-studies-on-stromal-cells-in-prostate-cancer
#6
Damien A Leach, Grant Buchanan
Interactions between tumor cells and fibroblasts play a pivotal role in cancer development and progression. Indeed, the paracrine communication between these two cell types is known to have physiological effects that alter carcinogenic and metastatic potential. An often overlooked player in these interactions is the involvement of the extracellular matrix (ECM). The network of ECM proteins secreted from fibroblasts is reportedly altered with cancer initiation and progression, and in several cases has been associated with patient outcome...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29786776/a-framework-for-image-based-modeling-of-acute-myocardial-ischemia-using-intramurally-recorded-extracellular-potentials
#7
Brett M Burton, Kedar K Aras, Wilson W Good, Jess D Tate, Brian Zenger, Rob S MacLeod
The biophysical basis for electrocardiographic evaluation of myocardial ischemia stems from the notion that ischemic tissues develop, with relative uniformity, along the endocardial aspects of the heart. These injured regions of subendocardial tissue give rise to intramural currents that lead to ST segment deflections within electrocardiogram (ECG) recordings. The concept of subendocardial ischemic regions is often used in clinical practice, providing a simple and intuitive description of ischemic injury; however, such a model grossly oversimplifies the presentation of ischemic disease-inadvertently leading to errors in ECG-based diagnoses...
May 21, 2018: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29786719/energy-transfer-chemiluminescence-for-ratiometric-ph-imaging
#8
Weiwei An, Ralph P Mason, Alexander R Lippert
Chemiluminescence imaging offers a low background and high sensitivity approach to imaging analytes in living cells and animals. Intensity-based measurements have been developed, but require careful consideration of kinetics, probe localization, and fluctuations in quantum yield, all of which complicate quantification. Here, we report a ratiometric strategy for quantitative chemiluminescence imaging of pH. The strategy relies on an energy transfer cascade of chemiluminescence emission from a spiroadamantane 1,2-dioxetane to a ratiometric pH indicator via fluorescent dyes in Enhancer solutions...
May 22, 2018: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/29786685/regulation-of-chromatin-states-and-gene-expression-during-hsn-neuronal-maturation-is-mediated-by-eor-1-plzf-mau-2-cohesin-loader-and-swi-snf-complex
#9
Yoichi Shinkai, Masahiro Kuramochi, Motomichi Doi
Newborn neurons mature by distinct and sequential steps through the timely induction of specific gene expression programs in concert with epigenetic changes. However, it has been difficult to investigate the relationship between gene expression and epigenetic changes at a single-cell resolution during neuronal maturation. In this study, we investigated the maturation of hermaphrodite-specific neurons (HSNs) in C. elegans, which provided the link between chromatin dynamics, gene expression, and the degree of neuronal maturation at a single-cell resolution...
May 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29786677/-combined-rehabilitation-in-the-patients-presenting-with-dorsopathies-of-the-lumbar-spine-and-concomitant-irritable-bowel-syndrome-based-at-a-therapeutic-clinic
#10
E V Sevostyanova, Y A Nikolaev, N V Bogdankevich, V G Lusheva, N A Dolgova, V Y Polyakov
BACKGROUND: Comorbidity constitutes a serious challenge for rehabilitative medicine. The comorbidity of the dorsopathy of the lumbar spine and irritable bowel syndrome mutually complicates the clinical course of both conditions, significantly reduces the patients' quality of life. and increases the costs of diagnostic procedures and restoration of the working capacity. The approaches to the non-pharmacological management of the patients presenting with these diseases remain to be developed...
May 21, 2018: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/29786676/-the-modern-approaches-to-the-restoration-of-postural-balance-in-the-patients-suffering-from-the-consequences-of-an-acute-cerebrovascular-accident-cva
#11
S A Volovets, E Y Sergeenko, L Y Darinskaya, B A Polyaev, Y A Yashinina, M A Isaeva, I V Zhitareva, A N Lobov, T I Panova
BACKGROUND: the most frequent and severe consequences of an acute cerebrovascular accident (CVA) are locomotor and coordination disorders which significantly increase the risk of falling in a static position and when walking. The methods used for the rehabilitation of the affected patients are designed in the first place to enable the patients to acquire the skills necessary for maintaining the static balance. The modern equipment allows to carry out coordination training in the static position and also during walking...
May 21, 2018: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/29786643/controlled-deactivation-cb1-receptor-ligands-as-a-novel-strategy-to-lower-intraocular-pressure
#12
Sally Miller, Shashank Kulkarni, Alex Ciesielski, Spyros P Nikas, Ken Mackie, Alexandros Makriyannis, Alex Straiker
Nearly half a century has passed since the demonstration that cannabis and its chief psychoactive component Δ⁸-THC lowers intraocular pressure (IOP). Elevated IOP remains the chief hallmark and therapeutic target for glaucoma, a condition that places millions at risk of blindness. It is likely that Δ⁸-THC exerts much of its IOP-lowering effects via the activation of CB1 cannabinoid receptors. However, the initial promise of CB1 as a target for treating glaucoma has not thus far translated into a credible therapeutic strategy...
May 22, 2018: Pharmaceuticals
https://www.readbyqxmd.com/read/29786579/operative-treatment-of-corrosive-esophageal-strictures
#13
Volodymyr O Shaprynskyi, Yevhen V Shaprynskyi, Yaroslav V Karyi, Serhii A Lysenko, Oleg O Vorovskyi, Andrii I Semenenko
OBJECTIVE: Introduction: Nowadays operative treatment of corrosive esophageal strictures remains one of the difficult and unsolved problems in surgery. The level of postoperative complications such as anastomotic leak (develops in 7-30% of cases), infections, pneumonia, pleural empyema, mediastinitis, peritonitis, postoperative corrosive strictures is still rather high. The aim of our work was to improve the results of surgical treatment of patients with corrosive esophageal strictures by analyzing and refining on conservative therapy options as well as differentiated approach to each operative treatment method...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29786567/how-to-incorporate-academic-writing-pedagogy-in-undergraduate-and-postgraduate-medical-education
#14
Viktoriia G Kostenko, Iryna M Solohor
OBJECTIVE: Introduction: Medical researchers, who are non-native English speakers, are facing now the growing need to publish their research results in international journals switching to an English-only policy, to apply for grants and scholarship, but at the same time this puts many authors whose native language is not English at a disadvantage compared to their English-speaking counterparts. The aim: This paper aims at analysing the existing parameters of academic writing proficiency of medical undergraduate and postgraduate students; elucidating current approaches to develop academic writing competency and to promote academic multi-literacy of junior researchers, and outlining the general recommendations to improve the quality and sophistication of their writing by incorporating the principles and achievements of academic writing pedagogy into the system of medical training...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29786561/impedance-based-cellular-assays-for-regenerative-medicine
#15
REVIEW
W Gamal, H Wu, I Underwood, J Jia, S Smith, P O Bagnaninchi
Therapies based on regenerative techniques have the potential to radically improve healthcare in the coming years. As a result, there is an emerging need for non-destructive and label-free technologies to assess the quality of engineered tissues and cell-based products prior to their use in the clinic. In parallel, the emerging regenerative medicine industry that aims to produce stem cells and their progeny on a large scale will benefit from moving away from existing destructive biochemical assays towards data-driven automation and control at the industrial scale...
July 5, 2018: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/29786534/-the-gynecological-pessary-is-it-really-a-device-of-another-age-a-fig-leaf
#16
E Nohuz, E Jouve, G Clement, B Jacquetin
OBJECTIVES: The use of pessary to put back up prolapsed organs to their normal position dates back prior to several millennia. This work aims to discuss its place in our clinical practice through an updated bibliographic review and emphasizes a hands-on approach to pessary fitting and management in terms of indication, pessary type selection, device' size, insertion, removal, follow-up visits and care. METHODS: A review of the literature, in the light of the latest publications and recommendations of French and international learned societies, as well as our own experience, were analyzed...
May 18, 2018: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/29786514/psychotherapy-for-ptsd-an-evidence-based-guide-to-a-theranostic-approach-to-treatment
#17
REVIEW
Jessica R M Goodnight, Katie A Ragsdale, Sheila A M Rauch, Barbara O Rothbaum
Posttraumatic stress disorder (PTSD) is often a clinically complex disorder, frequently presenting with comorbid clinical conditions. Individuals with PTSD may also present with high-risk symptoms such as substance misuse and suicidal ideation. The clinical complexity of PTSD has precluded some clinicians from providing gold-standard trauma-focused treatment due to concern of iatrogenic effects. However, evidence to date suggests that trauma-focused treatments are safe and effective for PTSD even when higher-risk comorbidity presents...
May 18, 2018: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/29786503/relationships-between-theoretically-derived-short-term-outcomes-and-support-for-policy-among-the-public-and-decision-makers
#18
Carol L Schmitt, Laurel Curry, Vanessa Boudewyns, Pamela A Williams, LaShawn Glasgow, Deanna Van Hersh, Jeffrey Willett, Todd Rogers
PURPOSE AND OBJECTIVES: Policy change is a lengthy and complex process. Thus, it is important to articulate hypothesized causal pathways between advocacy activities and policy change outcomes and to identify and monitor early indicators of progress toward policy change. INTERVENTION APPROACH: The Kansas Health Foundation supports grantee efforts to address the public health effects of obesity through evidence-based policy, systems, and environmental change interventions...
May 17, 2018: Preventing Chronic Disease
https://www.readbyqxmd.com/read/29786440/surface-ligand-promotion-of-carbon-dioxide-reduction-through-stabilizing-chemisorbed-reactive-intermediates
#19
Zhijiang Wang, Lina Wu, Kun Sun, Ting Chen, Zhaohua Jiang, Tao Cheng, William A Goddard
We have explored functionalizing metal catalysts with surface ligands as an approach to facilitate electrochemical carbon dioxide reduction reaction (CO2 RR). To provide a molecular level understanding of the mechanism by which this enhancement occurs, we combine in situ spectroscopy analysis with an interpretation based on quantum mechanics (QM) calculations. We find that a surface ligand can play a critical role in stabilizing the chemisorbed CO2 , which facilitates CO2 activation and leads to a 0.3 V decrease in the overpotential for carbon monoxide (CO) formation...
May 23, 2018: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29786438/an-accessible-method-for-dft-calculation-of-11b-nmr-shifts-of-organoboron-compounds
#20
Henry S Rzepa, Sergey Arkhipenko, Emily Wan, Marco T Sabatini, Valerija Karaluka, Andrew Whiting, Tom David Sheppard
The study of boron-mediated reactions in organic synthesis and reactions of organoboron compounds is greatly facilitated by the use of 11B NMR. However, the identification and characterisation of reaction intermediates in often complex systems is far from trivial, as 11B NMR does not provide any detailed structural information. Greater insight into the structures present in such systems can be obtained by using DFT chemical shift calculations to support or exclude proposed reaction intermediates. In this article, we report a rapid and accessible approach to the calculation of 11B NMR shifts that is applicable to a wide range of organoboron compounds...
May 22, 2018: Journal of Organic Chemistry
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