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https://www.readbyqxmd.com/read/28728184/multi-spectral-imaging-of-circumscribed-choroidal-hemangioma-introduction
#1
Nicola Y Gan, Cheryl Zimmer, Wai-Ching Lam
BACKGROUND AND OBJECTIVE: To illustrate the features of a circumscribed choroidal hemangioma (CCH) using Annidis RHA multi-spectral imaging (MSI) technology (Annidis Corporation, Ottawa, Canada). This novel imaging technique uses non-overlapping, narrow-band LED light sources ranging from 520 nm to 940 nm to create a monochromatic series of en face fundus images and oxy/deoxyhemoglobin contrasted maps of the retina and choroid. PATIENTS AND METHODS: Annidis RHA MSI images were taken of a 67-year-old Chinese male with CCH...
July 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28727990/new-heterocyclic-compounds-from-ranunculus-ternatus-thunb
#2
Zi-Ming Feng, Zhi-Lai Zhan, Ya-Nan Yang, Jian-Shuang Jiang, Pei-Cheng Zhang
Five new heterocyclic compounds, 5-α-d-fructofuranosylmethyl-furfural (1), 5-β-d-fructofuranosylmethyl-furfural (2), 5-β-d-fructopyranosylmethyl-furfural (3), 4-(2-((2S-2,3-dihydroxypropoxy)methyl)-5-formyl-1H-pyrrol-1-yl)butanoic acid (4), and 3S,4S-4,5,8-trihydroxy-3-(prop-1-en-2-yl)isochroman-1-one (5), were obtained from the root of Ranunculus ternatus Thunb., which is a traditional Chinese anti-tuberculosis medicine. Their structures were elucidated by UV, IR, HRESIMS, NMR data, and the comparison of experimental and calculated electronic circular dichroism (ECD) spectra...
July 12, 2017: Bioorganic Chemistry
https://www.readbyqxmd.com/read/28727476/options-for-addressing-exocrine-pancreatic-insufficiency-in-patients-receiving-enteral-nutrition-supplementation
#3
Steven D Freedman
Patients with exocrine pancreatic insufficiency (EPI) have suboptimal secretion of pancreatic digestive enzymes and experience a range of clinical symptoms related to the malabsorption of fat. In patients with EPI unable to meet their nutritional requirements, enteral nutrition (EN) support is used to augment nutritional status. In addition to protein and carbohydrate, EN formulas contain fats as a calorie source, as well as vitamins and minerals to help prevent nutritional deficiencies related to malabsorption...
July 2017: American Journal of Managed Care
https://www.readbyqxmd.com/read/28727458/unraveling-the-high-voc-and-high-performance-of-integrated-perovskite-organic-bulk-heterojunction-solar-cells
#4
Shiqi Dong, Yongsheng Liu, Ziruo Hong, En-Ping Yao, Pengyu Sun, Lei Meng, Yuze Lin, Jinsong Huang, Gang Li, Yang Yang
We have demonstrated high performance integrated perovskite/bulk-heterojunction (BHJ) solar cells due to the low carrier recombination velocity, high open circuit voltage (Voc) and increased light absorption ability in near-infrared (NIR) region of integrated devices. In particular, we find that the Voc of the integrated devices is dominated by (or pinned to) the perovskite cells, not the OPV cells. A Quasi-Fermi Level Pinning Model was proposed to understand the working mechanism and the origin of the Voc of the integrated perovskite/BHJ solar cell, which following that of the perovskite solar cell and is much higher than that of the low bandgap polymer based organic BHJ solar cell...
July 20, 2017: Nano Letters
https://www.readbyqxmd.com/read/28727434/ellipsometry-of-colloidal-solutions-new-experimental-setup-and-application-to-metallic-colloids
#5
Yann Battie, Michel Stchakovsky, Aotmane En Naciri, Suzanna Akil, Nouari Chaoui, Laurent Broch
An ellipsometric cell is developed to simultaneously determine the shape distribution, the volume fraction, and the complex refractive index of gold and silver colloids. Simulation reveals that this cell drastically improves the detection limit of ellipsometry. Indeed, Ag and Au nanoparticles (NPs) are detected at the ppmv level. We demonstrate that the NPs shape distribution can be estimated from ellipsometric measurements by analyzing them with a shape distributed effective medium theory (SDEMT). The obtained distributions from ellipsometry are in agreement with those deduced from transmission electron microcopy (TEM)...
July 20, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28727321/micelle-directing-synthesis-of-the-ag-doped-wo3-and-moo3-composite-for-the-photocatalytic-water-oxidation-and-organic-dyes-adsorption
#6
Nasen Bate, Hongfei Shi, Li Chen, Jiabo Wang, Shasha Xu, Weilin Chen, Jianping Li, En-Bo Wang
In this paper, Ag-doped WO3 (MoO3) composite has been prepared by a simple micelle directed method and high temperature sintering route. The as-prepared samples were characterized by XRD, ICP, TEM, XPS, DRS, BET, PL and EIS techniques. The photocatalytic experiments reveal that their oxygen production rates are up to 95.43 μmol (75.45 μmol) for Ag-doped WO3 (MoO3), which is 9.5 (7.3) times higher than that of pure WO3: 9.012 μmol (MoO3: 9.00 μmol) under visible light illumination (λ ≥ 420 nm), respectively...
July 20, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28726776/autophagosome-maturation-mediated-by-rab7-contributes-to-neuroprotection-of-hypoxic-preconditioning-against-global-cerebral-ischemia-in-rats
#7
Lixuan Zhan, Siyuan Chen, Kongping Li, Donghai Liang, Xinyong Zhu, Liu Liu, Zhiwei Lu, Weiwen Sun, En Xu
Autophagy disruption leads to neuronal damage in hypoxic-ischemic brain injury. Rab7, a member of the Rab GTPase superfamily, has a unique role in the regulation of autophagy. Hypoxic preconditioning (HPC) provides neuroprotection against transient global cerebral ischemia (tGCI). However, the underlying mechanisms remain poorly understood. Thus, the current study explored the potential molecular mechanism of the neuroprotective effect of HPC by investigating how Rab7 mediates autophagosome (AP) maturation after tGCI in adult rats...
July 20, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28726146/an-odyssey-of-complications-from-band-to-sleeve-to-bypass-definitive-laparoscopic-completion-gastrectomy-with-distal-esophagectomy-and-esophagojejunostomy-for-persistent-leak
#8
Hideo Takahashi, Andrew T Strong, Alfredo D Guerron, John H Rodriguez, Matthew Kroh
INTRODUCTION: Anastomotic leaks are uncommon yet potentially devastating complications after bariatric surgery. While the initial management includes resuscitation and sepsis control, the definitive management often requires endoscopic or surgical interventions. Surgical revision of the initial surgery may be necessary for chronic non-healing fistula. PATIENTS AND METHODS: The patient is a 45-year-old female with history of laparoscopic adjustable gastric banding who underwent band removal and conversion to a sleeve gastrectomy (SG) due to her failed weight loss, which resulted in a leak at gastroesophageal junction...
July 19, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28726145/robotic-gastric-bypass-may-lead-to-fewer-complications-compared-with-laparoscopy
#9
Dimitrios Stefanidis, Savannah B Bailey, Timothy Kuwada, Connie Simms, Keith Gersin
BACKGROUND: Robotic technology leads to improved visualization and precision over laparoscopy but also higher cost of care. The benefits of this technology to patient outcomes are controversial. Our objective was to assess whether the application of robotic surgery to Roux-en-Y gastric bypass (RYGB) would lead to improved patient outcomes. METHODS: A prospectively collected database at a bariatric center of excellence was reviewed for all RYGB procedures performed by one surgeon between 2007 and 2015...
July 19, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28726143/endoscopic-management-of-post-laparoscopic-sleeve-gastrectomy-stenosis
#10
Valérie Deslauriers, Amélie Beauchamp, Fabio Garofalo, Henri Atlas, Ronald Denis, Pierre Garneau, Radu Pescarus
BACKGROUND: Laparoscopic sleeve gastrectomy (LSG) is the most popular bariatric surgery worldwide. Gastric sleeve stenosis is the most common postoperative complication, occurring in up to 3.9% of the cases. Current treatment options include endoscopic treatments, such as dilatations and stent placement as well as surgical revisions such as laparoscopic Roux-en-Y gastric bypass (LRYGB), wedge gastrectomy or seromyotomy. METHODS: A retrospective analysis of our prospectively collected therapeutical endoscopy database was performed between January 2014 and February 2017...
July 19, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28726136/robotic-versus-laparoscopic-stapling-during-robotic-roux-en-y-gastric-bypass-surgery-a-case-matched-analysis-of-costs-and-clinical-outcomes
#11
Monika E Hagen, Minoa K Jung, Jassim Fakhro, Nicolas C Buchs, Leo Buehler, Jona M Mendoza, Philippe Morel
BACKGROUND: The purpose of this analysis is to compare the robotic EndoWrist Stapling System (EWSS) 45 mm (Intuitive Surgical Inc. Sunnyvale, CA, USA) and the ECHELON FLEX(™) ENDOPATH(®) Staplers (EFES) 60 mm (Ethicon, Cincinnati, OH, USA) for gastric pouch formation during robotic gastric bypass surgery. METHODS: Patients who underwent robotic gastric bypass surgery with stapling using EWSS were matched with patients who underwent the same procedure with the EFES...
July 19, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28726070/-flow-density-measurements-using-optical-coherence-tomography-angiography-impact-of-age-and-gender
#12
M Alnawaiseh, C Brand, J L Lauermann, N Eter
BACKGROUND: This article presents the normative data for flow density measured using optical coherence tomography (OCT) angiography and the impact of age and gender is evaluated. METHODS: In this study 58 eyes from 58 healthy volunteers with no history of any ocular disease or ocular surgery were included. The OCT angiography imaging was performed using the RTVue XR Avanti with the AngioVue (Optovue, Fremont, CA). The macula was imaged using a 3 × 3 mm scan, and the flow density data in the superficial retinal OCT angiogram and deep retinal OCT angiogram were extracted and analyzed...
July 19, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28725999/surgical-anti-reflux-options-beyond-fundoplication
#13
REVIEW
Dan Azagury, John Morton
PURPOSE OF REVIEW: This paper provides an overview of current and future surgical interventions available for the management of gastroesophageal reflux disease (GERD) beyond the well established and recognized fundoplication. Review the current indications and outcomes of these surgical procedures. RECENT FINDINGS: Fundoplication has been a cornerstone of the surgical management of GERD. However, other effective surgical options exist and can be considered based on prior interventions as well as patient, anatomical or other factors...
July 2017: Current Gastroenterology Reports
https://www.readbyqxmd.com/read/28725983/dabigatran-and-vitamin-k-antagonists-use-in-na%C3%A3-ve-patients-with-non-valvular-atrial-fibrillation-a-cross-sectional-study-of-primary-care-based-electronic-health-records
#14
Bogdan Vlacho, Maria Giner-Soriano, Edurne Zabaleta-Del-Olmo, Albert Roso-Llorach, Ana García-Sangenís, Rosa Morros-Pedrós
PURPOSE: The purpose of this study was to characterize the profile of patients with non-valvular atrial fibrillation who start an anticoagulant treatment after diagnosis with dabigatran and compare it with those who start with vitamin K antagonists (VKAs). METHODS: We analysed primary health care-based electronic health records data from 15,075 people with new diagnosis of atrial fibrillation who initiated treatment with dabigatran or VKA spanning 2011-2013. Logistic regression analysis for determination of factors associated with initiation of dabigatran was performed...
July 19, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28725979/effect-of-weight-loss-after-bariatric-surgery-on-thyroid-stimulating-hormone-levels-in-patients-with-morbid-obesity-and-normal-thyroid-function
#15
João Sérgio Neves, Sofia Castro Oliveira, Pedro Souteiro, Jorge Pedro, Daniela Magalhães, Vanessa Guerreiro, Rita Bettencourt-Silva, Maria Manuel Costa, Ana Cristina Santos, Joana Queirós, Ana Varela, Paula Freitas, Davide Carvalho
BACKGROUND: Several studies have reported that morbid obesity is associated with increased thyroid-stimulating hormone (TSH) levels. However, it is not clear what is the impact of bariatric surgery on postoperative thyroid function. The aim of this study was to evaluate the effect of weight loss after bariatric surgery on TSH levels in euthyroid patients with morbid obesity. METHODS: We performed a retrospective observational study of 949 euthyroid patients (86...
July 19, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28725887/photoresponsive-ionic-liquid-crystals-assembled-via-halogen-bond-en-route-towards-light-controllable-ion-transporters
#16
Marco Saccone, Francisco Fernandez Palacio, Gabriella Cavallo, Valentina Dichiarante, Matti Virkki, Giancarlo Terraneo, Arri Priimagi, Pierangelo Metrangolo
We demonstrate that halogen bonding (XB) can offer a novel approach for the construction of photoresponsive ionic liquid crystals. In particular, we assembled two new supramolecular complexes based on 1-ethyl-3-methylimidazolium iodides and azobenzene derivatives containing an iodotetrafluoro-benzene ring as XB donor, where the iodide anion acted as an XB acceptor. DSC and X-ray diffraction analyses revealed that the preferred stoichiometry between the XB donors and acceptors is 2 : 1, and that the iodide anions act as bidentate XB-acceptors, binding two azobenzene derivatives...
July 20, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28725531/computational-insights-into-materials-and-interfaces-for-capacitive-energy-storage
#17
REVIEW
Cheng Zhan, Cheng Lian, Yu Zhang, Matthew W Thompson, Yu Xie, Jianzhong Wu, Paul R C Kent, Peter T Cummings, De-En Jiang, David J Wesolowski
Supercapacitors such as electric double-layer capacitors (EDLCs) and pseudocapacitors are becoming increasingly important in the field of electrical energy storage. Theoretical study of energy storage in EDLCs focuses on solving for the electric double-layer structure in different electrode geometries and electrolyte components, which can be achieved by molecular simulations such as classical molecular dynamics (MD), classical density functional theory (classical DFT), and Monte-Carlo (MC) methods. In recent years, combining first-principles and classical simulations to investigate the carbon-based EDLCs has shed light on the importance of quantum capacitance in graphene-like 2D systems...
July 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28725155/a-case-of-severe-erythema-nodosum-induced-by-methimazole
#18
Selma Emre, Didem Ozdemir, Sibel Orhun, Goknur Kalkan, Sertac Sener
Erythema nodosum (EN), is the most common variant of septal panniculitis and is possibly a delayed hypersensitivity reaction triggered by a wide range of antigenic stimuli. Hypersensitivity reactions due to medications have been recognized as a cause of 3-10% of EN cases. Case reports of EN associated with the anti-thyroid drugs are quite rarely reported in the literature even if there is a common use of anti-thyroid drugs. We report an EN case due to methimazole. The complaints of patients arose immediately fifteen days after the beginning of methimazole treatment...
July 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28725154/new-constituents-triterpene-ester-and-sugar-derivatives-from-panax-ginseng-meyer-and-their-evaluation-of-antioxidant-activities
#19
Ill-Min Chung, Nasir Ali Siddiqui, Seung Hyun Kim, Praveen Nagella, Azmat Ali Khan, Mohd Ali, Ateeque Ahmad
Panax ginseng C. A. Meyer (Araliaceae), is a well-known herb and used in the old established system of Oriental remedy, especially in Japan, China and Korea. Four new compounds characterized as (cis)- 7β,11α,19,21-tetra-O-decanoyl-18, 22β-dihydroxy-dammar-1-en-3-one (1), 3β,4α,12β-trihydroxystigmast-5-en-21-yl octadecan-9',12'-dienoate (2), dammar-12, 24-dien-3α, 6β, 15α-triol-3α-D-arabinopyranosyl-6β-L-arabinopyranoside (3) and dammar-24-en-3α, 6β, 16α, 20β-tetraol-3α-D-arabinopyranosyl-6β-D-arabinopyranoside (4) were isolated and established from the ethyl acetate and butanol extracts of the roots of P...
July 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28725053/cyclic-di-gmp-regulates-mycobacterium-tuberculosis-resistance-to-ethionamide
#20
Hai-Nan Zhang, Zhao-Wei Xu, He-Wei Jiang, Fan-Lin Wu, Xiang He, Yin Liu, Shu-Juan Guo, Yang Li, Li-Jun Bi, Jiao-Yu Deng, Xian-En Zhang, Sheng-Ce Tao
Tuberculosis is still on the top of infectious diseases list on both mobility and mortality, especially due to drug-resistance of Mycobacterium tuberculosis (M.tb). Ethionamide (ETH) is one of effective second line anti-TB drugs, a synthetic compound similar to isoniazid (INH) structurally, with existing severe problem of ETH resistance. ETH is a prodrug, which is activated by Etha inside M.tb, and etha is transcriptionally repressed by Ethr. We found that c-di-GMP could bind Ethr, enhanced the binding of Ethr to the promoter of etha, and then repressed the transcription of etha, thus caused resistance of M...
July 19, 2017: Scientific Reports
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