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https://www.readbyqxmd.com/read/29656628/cerebral-thromboembolic-events-during-anterior-cervical-spine-surgery-retrospective-case-series-study-with-diffusion-weighted-magnetic-resonance-imaging-follow-up-in-the-immediate-postoperative-period
#1
Seok-Won Chung, Min-Soo Kang, Sang-Ho Lee, Shin-Young Lee, Yong-Hwan Shin, Chan-Hong Park
OBJECTIVE: We evaluated the efficacy of diffusion-weighted magnetic resonance imaging (DW-MRI) in detecting perioperative cerebral thromboembolic events after anterior cervical discectomy and fusion (ACDF). METHODS: This retrospective case series included 51 consecutive patients that underwent ACDF. To assess baseline presence of plaque or stenosis, all patients were assessed for risk factors of cerebrovascular events and underwent carotid ultrasound preoperatively and cerebral DW-MRI was performed in all patients postoperatively, with areas of high signal intensity interpreted as a cerebral thromboembolic event...
March 2018: Neurospine
https://www.readbyqxmd.com/read/29656607/expert-agreement-in-the-interpretation-of-lung-ultrasound-studies-performed-on-mechanically-ventilated-patients
#2
Scott J Millington, Robert T Arntfield, Robert Jie Guo, Seth Koenig, Pierre Kory, Vicki Noble, Haney Mallemat, Jordan R Schoenherr
OBJECTIVES: Although lung ultrasound (US) has been shown to have high diagnostic accuracy in patients presenting with acute dyspnea, its precision in critically ill patients is unknown. We investigated common areas of agreement and disagreement by studying 6 experts as they interpreted lung US studies in a cohort of intensive care unit (ICU) patients. METHODS: A previous study by our group asked experts to rate the quality of 150 lung US studies performed by 10 novices in a population of mechanically ventilated patients...
April 15, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29656582/hyperactive-cyclic-motor-activity-in-the-distal-colon-after-colonic-surgery-as-defined-by-high-resolution-colonic-manometry
#3
R Vather, G O'Grady, A Y Lin, P Du, C I Wells, D Rowbotham, J Arkwright, L K Cheng, P G Dinning, I P Bissett
BACKGROUND: Recovery after colonic surgery is invariably delayed by disturbed gut motility. It is commonly assumed that colonic motility becomes quiescent after surgery, but this hypothesis has not been evaluated rigorously. This study quantified colonic motility through the early postoperative period using high-resolution colonic manometry. METHODS: Fibre-optic colonic manometry was performed continuously before, during and after surgery in the left colon and rectum of patients undergoing right hemicolectomy, and in healthy controls...
April 14, 2018: British Journal of Surgery
https://www.readbyqxmd.com/read/29656574/nmredata-a-standard-to-report-the-nmr-assignment-and-parameters-of-organic-compounds
#4
Marion Pupier, Jean-Marc Nuzillard, Julien Wist, Nils E Schlörer, Stefan Kuhn, Mate Erdelyi, Christoph Steinbeck, Antony J Williams, Craig Butts, Tim D W Claridge, Bozhana Mikhova, Wolfgang Robien, Hesam Dashti, Hamid R Eghbalnia, Christophe Farès, Christian Adam, Kessler Pavel, Fabrice Moriaud, Mikhail Elyashberg, Dimitris Argyropoulos, Manuel Pérez, Patrick Giraudeau, Roberto R Gil, Paul Trevorrow, Damien Jeannerat
Even though NMR has found countless applications in the field of small molecule characterization, there is no standard file format available for the NMR data relevant to structure characterization of small molecules. A new format is therefore introduced to associate the NMR parameters extracted from 1D and 2D spectra of organic compounds to the proposed chemical structure. These NMR parameters, which we shall call NMReDATA (for nuclear magnetic resonance extracted data), include chemical shift values, signal integrals, intensities, multiplicities, scalar coupling constants, lists of 2D correlations, relaxation times and diffusion rates...
April 14, 2018: Magnetic Resonance in Chemistry: MRC
https://www.readbyqxmd.com/read/29656568/nanofiber-based-hydrogels-controllable-synthesis-and-multifunctional-applications
#5
REVIEW
Qiuxia Fu, Cheng Duan, Zishuo Yan, Yan Li, Yang Si, Lifang Liu, Jianyong Yu, Bin Ding
Nanofiber-based hydrogels (NFHGs) prepared by the combination of traditional hydrogels and novel nanofibers have demonstrated great potential in various application fields, owing to their integrated advantages of superhydrophilicity, high water-holding capacity, good biocompatibility, enhanced mechanical strength, and excellent structural tenability. In this review, a comprehensive overview of the structure design and synthetic strategy of NFHGs derived from electrospinning technique, weaving, freeze-drying, 3D printing, and molecular self-assembling method is provided...
April 14, 2018: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/29656413/influence-of-thermal-treatment-on-the-characteristics-of-major-oyster-allergen-cra-g-1-tropomyosin
#6
Lei Fang, Guoming Li, Ruizeng Gu, Muyi Cai, Jun Lu
BACKGROUND: Shellfish, including oysters, often cause allergic reactions in adults. Thermal treatment is one of the most common technologies to deal with seafood, which may affect biological properties. The aim of this work was to evaluate the impact of heating on conformation and potential allergenicity of oyster-derived tropomyosin (Cra g 1). RESULTS: SDS-PAGE showed that there was an apparent band at 35KD of raw tropomyosin after purification and more significant polymers appeared in heated protein...
April 15, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29656337/preparation-and-characterization-of-sulfonated-chitosan-modified-gold-nanoparticles-and-their-surface-electronic-payload-of-charged-drugs
#7
Huaisong Wang, Jia He, Ya Ding, Xinghua Xia
Chitosan (CS), a kind of naturally produced polysaccharide with extraordinary biocompatibility and biodegradation, shows much potential to act as reducing and stabilizing agent in the synthesis of gold nanoparticles (AuNPs) for drug delivery. To solve the poor solubility and expand the pharmaceutical applications of CS, various CS derivatives through rational design have been developed and further used to prepare, stabilize, and mediate self-assembling of gold materials. Herein, we chose sulfonic chitosan as a stabilizing reagent for the synthesis of highly stable AuNPs (AuNP/SCSs) with diameters of about 3 nm...
April 1, 2018: Science China. Life Sciences
https://www.readbyqxmd.com/read/29656257/nutrient-derived-environmental-impacts-in-chinese-agriculture-during-1978-2015
#8
Huijun Wu, Shun Wang, Liangmin Gao, Ling Zhang, Zengwei Yuan, Tingyu Fan, Kaiping Wei, Li Huang
Nitrogen (N) and phosphorus (P) play a critical role in agricultural production and cause many environmental disturbances. By combing life cycle assessment (LCA) method with the mass balance principle of substance flow analysis (SFA), this study establishes a nutrient-derived environmental impact assessment (NEIA) model to analyze the environmental impacts caused by nutrient-containing substances of agricultural production in China during 1978-2015. The agricultural production system is composed of crop farming and livestock breeding, and the environmental impacts include energy consumption, global warming, acidification, and eutrophication...
April 12, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29656156/ammonia-sensing-by-closely-packed-wo-3-microspheres-with-oxygen-vacancies
#9
Chu-Ya Wang, Xing Zhang, Qing Rong, Nan-Nan Hou, Han-Qing Yu
Ammonia (NH3 ), is a precursor for the formation of atmospheric fine particulate matter (PM2.5 ), and thus establishing efficient and cost-effective methods to detect ammonia emission is highly desired. Transition metal oxide semiconductors-based sensors for electrochemical gas sensing have been extensively explored. Among various types of semiconductors, tungsten oxide (WO3 ) possesses an anisotropic layered crystalline structure and is recognized as a promising material for gas sensing. However, the performance of commercial WO3 is unsatisfactory because of its high impedance and low charge transportation efficiency...
April 10, 2018: Chemosphere
https://www.readbyqxmd.com/read/29656064/a-prospective-study-of-patient-reported-pain-after-bulbar-urethroplasty
#10
Patrick Evans, Sorena Keihani, Benjamin N Breyer, Bradley A Erickson, James M Hotaling, Sara M Lenherr, Jeremy B Myers
PURPOSE: To understand the prevalence of chronic perineal pain, activity limitations, and patient satisfaction after urethroplasty. METHODS: From 2014-2016, we prospectively enrolled men undergoing urethroplasty for bulbar urethral strictures. Patients, before and after surgery, completed questions from the Core Lower Urinary Tract Symptom Score (CLSS) assessing pain frequency in the bladder and penis/urethra, as well as non-validated questions assessing perineal pain...
April 12, 2018: Urology
https://www.readbyqxmd.com/read/29656049/reinforcing-value-and-hypothetical-behavioral-economic-demand-for-food-and-their-relation-to-bmi
#11
Leonard H Epstein, Rocco A Paluch, Katelyn A Carr, Jennifer L Temple, Warren K Bickel, James MacKillop
Food is a primary reinforcer, and food reinforcement is related to obesity. The reinforcing value of food can be measured by establishing how hard someone will work to get food on progressive-ratio schedules. An alternative way to measure food reinforcement is a hypothetical purchase task which creates behavioral economic demand curves. This paper studies whether reinforcing value and hypothetical behavioral demand approaches are assessing the same or unique aspects of food reinforcement for low (LED) and high (HED) energy density foods using a combination of analytic approaches in females of varying BMI...
April 3, 2018: Eating Behaviors
https://www.readbyqxmd.com/read/29655987/overcoming-safety-challenges-in-co-therapy-extracorporeal-co-delivery-under-precise-feedback-control-of-systemic-carboxyhemoglobin-levels
#12
Jakob Wollborn, Cornelius Hermann, Ulrich Goebel, Benjamin Merget, Christian Wunder, Sven Maier, Thomas Schäfer, Dominik Heuler, Klaus Müller-Buschbaum, Hartmut Buerkle, Lorenz Meinel, Martin A Schick, Christoph Steiger
Carbon monoxide (CO) has demonstrated therapeutic potential in multiple inflammatory conditions including intensive care applications such as organ transplantation or sepsis. Approaches to translate these findings into future therapies, however, have been challenged by multiple hurdles including handling and toxicity issues associated with systemic CO delivery. Here, we describe a membrane-controlled Extracorporeal Carbon Monoxide Release System (ECCORS) for easy implementation into Extracorporeal Membrane Oxygenation (ECMO) setups, which are being used to treat cardiac and respiratory diseases in various intensive care applications...
April 12, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29655928/effects-of-3-months-sitting-callisthenic-balance-and-resistance-exercise-on-aerobic-capacity-aortic-stiffness-and-body-composition-in-healthy-older-participants-randomized-controlled-trial
#13
Sławomir Kujawski, Agnieszka Kujawska, Małgorzata Gajos, Jacek J Klawe, Małgorzata Tafil-Klawe, Katarzyna Mądra-Gackowska, Błażej Stankiewicz, Julia L Newton, Kornelia Kędziora-Kornatowska, Paweł Zalewski
BACKGROUND: Arterial stiffness (AS) is a reduction in the ability of large arteries to readily accommodate the increase in blood ejected from the heart during systole related with aging. Physical exercise is associated with AS reduction. However, it remains controversial as to which modality and intensity (resistance vs aerobic, high vs low) would be the most effective. The aim of these studies is to examine the effects of 3-months sitting callisthenic balance (SCB) and resistance exercise (RET) on aerobic capacity, aortic stiffness and body composition in older participants...
April 12, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29655854/the-expression-and-distribution-of-a-leptin-receptor-in-the-central-nervous-system-digestive-organs-and-gonads-of-the-giant-freshwater-prawn-macrobrachium-rosenbergii
#14
Jaruwan Poljaroen, Ruchanok Tinikul, Panat Anuracpreeda, Prasert Sobhon, Yotsawan Tinikul
In the present study, the presence and distribution of leptin receptor (LEP-R) in central nervous system, digestive organs, gonads of giant freshwater prawn, Macrobrachium rosenbergii, were investigated with Western blot and immunohistochemistry. By Western blot a LEP-R with a molecular weight (MW) of 100 kDa was detected in the brain, thoracic ganglia, abdominal ganglia, hepatopancreas, all parts of the gastrointestinal tract, ovaries, and testes. In hepatopancreas and foregut, another intense positive band was detected at molecular weight of 30 kDa, which could be an isotype of LEP-R...
April 11, 2018: Acta Histochemica
https://www.readbyqxmd.com/read/29655762/amateur-endurance-triathletes-performance-is-improved-independently-of-volume-or-intensity-based-training
#15
Vicente Javier Clemente-Suárez, Rosa Delgado-Moreno, Beatriz González, Javier Ortega, Domingo Jesús Ramos-Campo
The aim of the present research was to compare the effects in swimming and running performance, horizontal jump test, autonomic modulation, and body composition of four training weeks with emphasis on volume versus intensity in moderate trained triathletes. Thirty-two amateur triathletes (20 males and 12 females) were randomly divided in three different groups that performed 6 training session per week: Intensity (INT): training focused on performs intensity training Volume (VOL): training focused on performs volume training; and Control (CON): physical active group with no periodized training...
April 12, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29655406/aggregatibacter-actinobacillus-actimycetemcomitans-leukotoxin-and-human-periodontitis-a-historic-review-with-emphasis-on-jp2
#16
REVIEW
Chi-Cheng Tsai, Ya-Ping Ho, Yu-Shian Chou, Kun-Yen Ho, Yi-Min Wu, Ying-Chu Lin
Aggregatibacter (Actinobacillus) actimycetemcomitans (Aa) is a gram-negative bacterium that colonizes the human oral cavity and is causative agent for localized aggressive (juvenile) periodontitis (AgP). In the middle of 1990s, a specific JP2 clone of belonging to the cluster of serotype b strains of Aa with highly leukotoxicity (leukotoxin, LtxA) able to kill human immune cells was isolated. JP2 clone of Aa was strongly associated with in particularly in rapidly progressing forms of aggressive periodontitis...
April 2018: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/29655317/the-control-of-electron-quantum-trajectories-on-the-high-order-harmonic-generation-of-co-and-n-2-molecules-in-the-presence-of-a-low-frequency-field
#17
A M Koushki, R Sadighi-Bonabi, M Mohsen-Nia, E Irani
In the present work, an efficient method is theoretically investigated for extending high-order harmonics and ultrashort attosecond pulse generation in N2 and CO molecules by using the time-dependent density functional theory approach. Our results show that by utilizing chirped laser field in the presence of a low frequency field, not only is the harmonic cutoff extended remarkably but also the single short quantum trajectory is selected to contribute to the harmonic spectra. When a low frequency field is added to the two-color chirped laser field, the long quantum trajectories are suppressed and only the short quantum trajectories contribute to the higher harmonic emission mechanism...
April 14, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29653311/as-v-removal-capacity-of-fecu-bimetallic-nanoparticles-in-aqueous-solutions-the-influence-of-cu-content-and-morphologic-changes-in-bimetallic-nanoparticles
#18
Pamela Sepúlveda, María A Rubio, Samuel E Baltazar, J Rojas-Nunez, J L Sánchez Llamazares, Alejandra García Garcia, Nicolás Arancibia-Miranda
In this study, bimetallic nanoparticles (BMNPs) with different mass ratios of Cu and Fe were evaluated. The influence of the morphology on the removal of pollutants was explored through theoretical and experimental studies, which revealed the best structure for removing arsenate (As(V)) in aqueous systems. To evidence the surface characteristics and differences among BMNPs with different mass proportions of Fe and Cu, several characterization techniques were used. Microscopy techniques and molecular dynamics simulations were applied to determine the differences in morphology and structure...
March 31, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29653299/confocal-total-reflection-x-ray-fluorescence-technology-based-on-an-elliptical-monocapillary-and-a-parallel-polycapillary-x-ray-optics
#19
Yu Zhu, Yabing Wang, Tianxi Sun, Xuepeng Sun, Xiaoyun Zhang, Zhiguo Liu, Yufei Li, Fengshou Zhang
A total reflection X-ray fluorescence (TXRF) spectrometer based on an elliptical monocapillary X-ray lens (MXRL) and a parallel polycapillary X-ray lens (PPXRL) was designed. This TXRF instrument has micro focal spot, low divergence and high intensity of incident X-ray beam. The diameter of the focal spot of MXRL was 16.5 µm, and the divergence of the incident X-ray beam was 3.4 mrad. We applied this TXRF instrument to the micro analysis of a single-layer film containing Ni deposited on a Si substrate by metal vapor vacuum arc ion source...
April 4, 2018: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/29653257/%C3%AE-adrenergic-receptors-reduce-the-threshold-for-induction-and-stabilization-of-ltp-and-enhance-its-magnitude-via-multiple-mechanisms-in-the-ventral-but-not-the-dorsal-hippocampus
#20
Vassilios Papaleonidopoulos, Costas Papatheodoropoulos
The hippocampus is a functionally heterogeneous structure with the cognitive and emotional signal processing ascribed to the dorsal (DH) and the ventral hippocampus (VH) respectively. However, the underlying mechanisms are poorly understood. Noradrenaline is released in hippocampus during emotional arousal modulating synaptic plasticity and memory consolidation through activation of β adrenergic receptors (β-ARs). Using recordings of field excitatory postsynaptic potentials from the CA1 field of adult rat hippocampal slices we demonstrate that long-term potentiation (LTP) induced either by theta-burst stimulation (TBS) that mimics a physiological firing pattern of hippocampal neurons or by high-frequency stimulation is remarkably more sensitive to β-AR activation in VH than in DH...
April 10, 2018: Neurobiology of Learning and Memory
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