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https://www.readbyqxmd.com/read/29223458/determination-of-zinc-oxide-content-of-mineral-medicine-calamine-using-near-infrared-spectroscopy-based-on-miv-and-bp-ann-algorithm
#1
Xiaodong Zhang, Long Chen, Yangbo Sun, Yu Bai, Bisheng Huang, Keli Chen
Near-infrared (NIR) spectroscopy has been widely used in the analysis fields of traditional Chinese medicine. It has the advantages of fast analysis, no damage to samples and no pollution. In this research, a fast quantitative model for zinc oxide (ZnO) content in mineral medicine calamine was explored based on NIR spectroscopy. NIR spectra of 57 batches of calamine samples were collected and the first derivative (FD) method was adopted for conducting spectral pretreatment. The content of ZnO in calamine sample was determined using ethylenediaminetetraacetic acid (EDTA) titration and taken as reference value of NIR spectroscopy...
December 5, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29223114/regional-conduction-velocity-calculation-from-clinical-multichannel-electrograms-in-human-atria
#2
Bhawna Verma, Tobias Oesterlein, Axel Loewe, Armin Luik, Claus Schmitt, Olaf Dössel
BACKGROUND: During atrial fibrillation, heterogeneities and anisotropies result in a chaotic propagation of the depolarization wavefront. The electrophysiological parameter called conduction velocity (CV) influences the propagation pattern over the atrium. We present a method that determines the regional CV for deformed catheter shapes, which result due to the catheter movement and changing wall contact. METHODS: The algorithm selects stable catheter positions, finds the local activation times (LAT), considers the wall contact and calculates all CV estimates within the area covered by the catheter...
November 26, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29221464/molecular-and-functional-characterization-of-ferredoxin-nadp-h-oxidoreductase-from-gracilaria-chilensis-and-its-complex-with-ferredoxin
#3
María Alejandra Vorphal, Carola Bruna, Traudy Wandersleben, Jorge Dagnino-Leone, Francisco Lobos-González, Elena Uribe, José Martínez-Oyanedel, Marta Bunster
BACKGROUD: Ferredoxin NADP(H) oxidoreductases (EC 1.18.1.2) (FNR) are flavoenzymes present in photosynthetic organisms; they are relevant for the production of reduced donors to redox reactions, i.e. in photosynthesis, the reduction of NADP+ to NADPH using the electrons provided by Ferredoxin (Fd), a small FeS soluble protein acceptor of electrons from PSI in chloroplasts. In rhodophyta no information about this system has been reported, this work is a contribution to the molecular and functional characterization of FNR from Gracilaria chilensis, also providing a structural analysis of the complex FNR/Fd...
December 8, 2017: Biological Research
https://www.readbyqxmd.com/read/29217473/impact-of-digestion-on-the-transport-of-dextran-loaded-self-emulsified-nanoemulsion-through-mdck-epithelial-cell-monolayer-and-rat-intestines
#4
Pulkit Khatri, Jun Shao
Many of the lipids and surfactants used to prepare the self-emulsified nanoemulsion (SEN) are subjected to the gastro-intestinal enzymatic digestion, which may affect the absorption of the loaded drug. The present study was to investigate the impact of such digestion on the transport of hydrophilic macromolecules (10-kDa dextran as the model compound) loaded in SEN through the MDCK cell monolayer and ex-vivo rat intestines. FITC-labeled dextran (FD) was loaded inside the inner oil phase of SEN by the formation of FD-phospholipid solid dispersion (FDPS)...
December 4, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29211957/binding-mechanisms-of-electron-transport-proteins-with-cyanobacterial-photosystem-i-an-integrated-computational-and-experimental-model
#5
Karan Kapoor, Derek J Cashman, Luke Nientimp, Barry D Bruce, Jerome Yves Baudry
The stromal domain (PsaC, D, and E) of photosystem I (PSI) in Cyanobacteria accepts electrons from PsaA and PsaB of photosystem I (PSI). These electrons then reduce transiently bound ferredoxin (Fd) or flavodoxin. Experimental structures exist for all of these protein partners individually, yet to date, no experimental structure of the PSI/Fd complexes is presently available. Molecular models of Fd docked into the stromal domain of the cyanobacterial PSI site are constructed here starting from X-ray and NMR structures of PSI and Fd...
December 6, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29211806/screening-and-identification-of-key-genes-regulating-fall-dormancy-in-alfalfa-leaves
#6
Hongqi Du, Yinghua Shi, Defeng Li, Wenna Fan, Guoqiang Wang, Chengzhang Wang
Fall dormancy (FD) determines the adaptation of an alfalfa variety and affects alfalfa production and quality. However, the molecular mechanism underlying FD remains poorly understood. Here, 44 genes regulating FD were identified by comparison of the transcriptomes from leaves of Maverick (fall-dormant alfalfa) and CUF101(non-fall-dormant), during FD and non-FD and were classified them depending on their function. The transcription of IAA-amino acid hydrolase ILR1-like 1, abscisic acid receptor PYL8, and monogalactosyldiacylglycerol synthase-3 in Maverick leaves was regulated by daylength and temperature, and the transcription of the abscisic acid receptor PYL8 was mainly affected by daylength...
2017: PloS One
https://www.readbyqxmd.com/read/29204059/potential-rat-model-of-anxiety-like-gastric-hypersensitivity-induced-by-sequential-stress
#7
Fu-Chun Jing, Jun Zhang, Chen Feng, Yuan-Yuan Nian, Jin-Hai Wang, Hao Hu, Bao-De Yang, Xiao-Ming Sun, Jian-Yun Zheng, Xiao-Ran Yin
AIM: To establish a rat model of anxiety-like gastric hypersensitivity (GHS) of functional dyspepsia (FD) induced by novel sequential stress. METHODS: Animal pups were divided into two groups from postnatal day 2: controls and the sequential-stress-treated. The sequential-stress-treated group received maternal separation and acute gastric irritation early in life and restraint stress in adulthood; controls were reared undisturbed with their mothers. Rats in both groups were followed to adulthood (8 wk) at which point the anxiety-like behaviors and visceromotor responses to gastric distention (20-100 mmHg) and gastric emptying were tested...
November 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29201581/contrast-enhancement-of-aneurysm-sac-post-pipeline-treatment-interpreted-as-recanalization
#8
Annie J Tsay, Sara Langan, Scott Simon
Multiple imaging modalities are available to evaluate aneurysms post-flow diverter (FD) placement. Though digital subtraction angiography (DSA) is the gold standard imaging modality post-FD placement, it is not perfect, and neither are other techniques, including contrast-enhanced magnetic resonance angiography (CE-MRA) and magnetic resonance imaging (MRI). We present a case of a 73-year-old woman with a right internal carotid artery (ICA) aneurysm treated with a pipeline embolization device (PED). Initial follow-up post-PED placement by three-dimensional time-of-flight (3D-TOF) MRA demonstrated aneurysm occlusion, which was confirmed by computed tomography angiography (CTA) and CE-MRA in subsequent follow-up appointments...
September 29, 2017: Curēus
https://www.readbyqxmd.com/read/29199141/effects-of-amitriptyline-and-escitalopram-on-sleep-and-mood-in-patients-with-functional-dyspepsia
#9
Linda M Herrick, Michael Camilleri, Cathy D Schleck, Alan R Zinsmeister, Yuri A Saito, Nicholas J Talley
BACKGROUND & AIMS: Tricyclic antidepressants are effective in reducing symptoms of functional dyspepsia (FD). We performed a post hoc analysis of data from a previous randomized clinical trial to determine whether the benefits of an antidepressant on gastrointestinal symptoms in patients with FD were mediated by improving sleep or reducing anxiety. We explored the relationships between psychological measures, quality of sleep, and relief of symptoms. METHODS: We analyzed data from a multicenter, double-blind trial that evaluated the efficacy of antidepressants on symptoms of FD, from October 2006 through October 2012...
December 1, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29195674/the-role-of-smoking-and-alcohol-behaviour-in-management-of-functional-gastrointestinal-disorders
#10
REVIEW
Bodil Ohlsson
Functional gastrointestinal disorders (FGIDs) are common disorders in the population. Lifestyle habits have been suspected to influence the presence and degree of symptoms, and many studies have examined the role of food components and physical activity on the disease development. The role of smoking and alcohol intake on FGID has been less thoroughly examined. This systematic literature review, of a large amount of studies from different countries around the world with different design and application of FGID criteria, shows that smoking seems to be associated with a significant 50% increased risk of FD for current compared with never smokers...
October 2017: Best Practice & Research. Clinical Gastroenterology
https://www.readbyqxmd.com/read/29194205/a-protective-eye-shield-reduces-limbal-strain-and-its-variability-during-simulated-sleep-in-adults-with-glaucoma
#11
Alison Flatau, Francisco Solano, Joan L Jefferys, Christopher Damion, Harry A Quigley
PURPOSE: To determine the effect of wearing a protective eye shield (mask) on limbal strain magnitude and variability in glaucoma eyes when sleeping with 1 side of the face down (FD) against a pillow. METHODS: A prospective, randomized, interventional trial was conducted at the Wilmer Eye Institute with 36 glaucoma patients. A contact lens sensor measured limbal strain (output in equivalent millivolts) during intervals of up to 60 minutes in lateral decubitus, FD, and supine positions...
November 30, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/29193620/morphometric-study-of-adipocytes-on-breast-cancer-by-means-of-photonic-microscopy-and-image-analysis
#12
Luis Eduardo Suárez-Nájera, José Jorge Chanona-Pérez, Alejandra Valdivia-Flores, Daniel Marrero-Rodríguez, Mauricio Salcedo-Vargas, David Israel García-Ruiz, Marco Antonio Castro-Reyes
Worldwide, breast cancer (BrCa) is currently the leading cause of deaths associated to malignant lesions in adult women. Given that some studies have mentioned that peritumoral adipocytes may contribute to breast carcinogenesis, present work sought to quantitative evaluate the morphometry of these cells in a group of adult women. Three thousand six hundred sixty four breast adipocytes, that came from biopsies of a group of adult females with different types of breast carcinomas (ductal, lobular, and mixed) and one with normal tissues, were evaluated through an image analysis (IA) process regarding six morphometric descriptors: area (A), perimeter (P), Feret diameter (FD ), aspect ratio (AR), roundness factor (RF), and fractal dimension of cellular contour (FDC )...
November 27, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/29192375/efficacy-of-rebamipide-in-organic-and-functional-dyspepsia-a-systematic-review-and-meta-analysis
#13
Mohamed Hasif Jaafar, Sher Zaman Safi, Maw-Pin Tan, Sanjay Rampal, Sanjiv Mahadeva
OBJECTIVE: The role of gastritis in dyspepsia remains controversial. We aimed to examine the efficacy of rebamipide, a gastric mucosal protective agent, in both organic and functional dyspepsia. DESIGN: A systematic review and meta-analysis was performed. The following databases were searched using the keywords ("rebamipide" OR "gastroprotective agent*" OR "mucosta") AND ("dyspepsia" OR "indigestion" OR "gastrointestinal symptoms"): PubMed, Wed of Science, Embase, CINAHL, Cochrane Clinical Trials Register...
December 1, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29192304/association-of-hearing-loss-and-otologic-outcomes-with-fibrous-dysplasia
#14
Alison M Boyce, Carmen Brewer, Timothy R DeKlotz, Christopher K Zalewski, Kelly A King, Michael T Collins, H Jeffrey Kim
Importance: Fibrous dysplasia (FD) and McCune-Albright syndrome (MAS) are rare bone and endocrine disorders in which expansile fibro-osseous lesions result in deformity, pain, and functional impairment. The effect of FD on hearing and otologic function has not been established. Objectives: To characterize audiologic and otologic manifestations in a large cohort of individuals with FD/MAS and to investigate potential mechanisms of hearing loss. Design, Setting, and Participants: In this natural history study, individuals with craniofacial FD seen at a clinical research center underwent clinical, biochemical, computed tomographic, audiologic, and otolaryngologic evaluations...
November 30, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/29188119/multi-shaping-technique-reduces-sidelobe-magnitude-in-optical-coherence-tomography
#15
Yu Chen, Jeff Fingler, Scott E Fraser
Shaping methods that are commonly used in Fourier-domain optical coherence tomography (FD-OCT) can suppress sidelobe artifacts in the axial direction, but they typically broaden the mainlobe of the point spread function (PSF) and reduce the axial resolution. To improve OCT image quality without this tradeoff, we have developed a multi-shaping technique that reduces the axial sidelobe magnitude dramatically and achieves better axial resolution than conventional shaping methods. This technique is robust and compatible in various FD-OCT imaging systems...
November 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/29186057/development-of-spectral-disease-indices-for-flavescence-dor%C3%A3-e-grapevine-disease-identification
#16
Hania Al-Saddik, Jean-Claude Simon, Frederic Cointault
Spectral measurements are employed in many precision agriculture applications, due to their ability to monitor the vegetation's health state. Spectral vegetation indices are one of the main techniques currently used in remote sensing activities, since they are related to biophysical and biochemical crop variables. Moreover, they have been evaluated in some studies as potentially beneficial for detecting or differentiating crop diseases. Flavescence Dorée (FD) is an infectious, incurable disease of the grapevine that can produce severe yield losses and, hence, compromise the stability of the vineyards...
November 29, 2017: Sensors
https://www.readbyqxmd.com/read/29184807/zoledronic-acid-in-pediatric-metabolic-bone-disorders
#17
REVIEW
Sasigarn A Bowden, John D Mahan
Zoledronic acid (ZA), a highly potent intravenous bisphosphonate (BP), has been increasingly used in children with primary and secondary osteoporosis due to its convenience of shorter infusion time and less frequent dosing compared to pamidronate. Many studies have also demonstrated beneficial effects of ZA in other conditions such as hypercalcemia of malignancy, fibrous dysplasia (FD), chemotherapy-related osteonecrosis (ON) and metastatic bone disease. This review summarizes pharmacologic properties, mechanism of action, dosing regimen, and therapeutic outcomes of ZA in a variety of metabolic bone disorders in children...
October 2017: Translational pediatrics
https://www.readbyqxmd.com/read/29184531/stent-assisted-coiling-of-ruptured-and-incidental-aneurysms-of-the-intracranial-circulation-using-moderately-flow-redirecting-braided-leo-stents-initial-experience-in-39-patients
#18
Peter Voigt, Stefan Schob, Robert Jantschke, Ulf Nestler, Matthias Krause, David Weise, Donald Lobsien, Karl-Titus Hoffmann, Ulf Quäschling
Background: Flow diversion (FD)-a young technique using stents with highly increased surface coverage-was introduced to treat complex aneurysms without intra-aneurysmal material placement and has amended the spectrum of endovascular techniques such as stent-assisted coil occlusion considerably. However, ischemic complications, a common side effect in FD, occur more frequently compared with the conventional endovascular approaches and certainly limit the indication of this technique. Our study aimed to investigate the feasibility and efficacy of stent-assisted coiling using low profile self-expandable stents, which exhibit only moderate flow-redirecting properties and therefore represent a combination of hemodynamic endovascular and occlusive endosaccular therapy...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29184247/effect-of-packaging-types-and-storage-conditions-on-quality-aspects-of-dried-thunbergia-laurifolia-leaves-and-degradation-kinetics-of-bioactive-compounds
#19
Traiphop Phahom, William L Kerr, Ronald B Pegg, Singhanat Phoungchandang
Thunbergia laurifolia leaves were dried by freeze drying (FD) and microwave heat pump dehumidified air drying (MHPD). The dried leaves were stored in polypropylene (PP) or aluminum laminated pouches (ALP) at 15, 25 or 35 °C and 60% RH. The samples were held for 180 days to observe changes in moisture content, color, total phenolics, antioxidant activity, catechin and caffeic acid. In general, samples in PP had a greater increase in moisture. Total phenolics content and ferric-reducing antioxidant power values increased for 120 days, then decreased thereafter...
December 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29184078/function-of-capric-acid-in-cyclophosphamide-induced-intestinal-inflammation-oxidative-stress-and-barrier-function-in-pigs
#20
Sang In Lee, Kyung Soo Kang
The small intestine is not only critical for nutrient absorption, but also serves as an important immune organ. Medium-chain fatty acids have nutritional and metabolic effects and support the integrity of the intestinal epithelium. However, their roles in intestinal immunity in pigs are not fully understood. We investigated the effects of a medium-chain fatty acid, capric acid, on intestinal oxidative stress, inflammation, and barrier function in porcine epithelial cells and miniature pigs after treatment with the immune suppressant cyclophosphamide...
November 28, 2017: Scientific Reports
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