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https://www.readbyqxmd.com/read/28182422/unraveling-the-structure-affinity-relationship-between-cucurbit-n-urils-n-7-8-and-cationic-diamondoids
#1
David Sigwalt, Marina Šekutor, Liping Cao, Peter Y Zavalij, Jiří Hostaš, Haresh Ajani, Pavel Hobza, Kata Mlinarić-Majerski, Robert Glaser, Lyle Isaacs
We report measurement of the binding constants (Ka) for cucurbit[n]uril (n = 7, 8) toward four series of guests based on 2,6-disubstituted adamantanes, 4,9-disubstituted diamantanes, 1,6-disubstituted diamantanes, and 1-substituted adamantane ammonium ions by direct and competitive 1H NMR spectroscopy. Compared to CB[7]•Diam(NMe3)2, the adamantane diammonium ion complexes (e.g. CB[7]•2,6-Ad(NH3)2 and CB[7]•2,6-Ad(NMe3)2 are less effective at realizing the potential 1000-fold enhancement in affinity due to ion dipole interactions at the second ureidyl C=O portal...
February 9, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28164163/change-of-sagittal-spinal-alignment-and-its-association-with-pain-and-function-after-lumbar-surgery-augmented-with-an-interspinous-implant
#2
Rebecca J Crawford, Quentin J Malone, Roger I Price
BACKGROUND: Interspinous spacer/implants like the Device for Intervertebral Assisted Motion (DIAM™) are controversially yet commonly used in the surgical treatment of lumbar degenerative pathologies. Criticism is based on ill-defined indications, lack of superiority over decompression, and a poorly understood mechanical effect. Yet, continued use by surgeons implies their perceived clinical merit. We examined radiographic spinal alignment for 12 months, and pain and function for 24 months, after DIAM-augmented surgery to improve the understanding of the mechanical effect relating to clinical outcomes in patients...
2017: Scoliosis and Spinal Disorders
https://www.readbyqxmd.com/read/28154432/are-entomopathogenic-nematodes-effective-biological-control-agents-against-the-carob-moth-ectomyelois-ceratoniae
#3
Zahra Memari, Javad Karimi, Shokoofeh Kamali, Seyed Hossein Goldansaz, Mojtaba Hosseini
The carob moth (Ectomyelois ceratoniae) is the key pest of pomegranate, which causes a significant percentage of losses in pomegranate orchards and warehouses of Iran annually. The pest larvae are characterized by displaying a cryptic behavior within the fruit, which avoids most routine control techniques, especially chemical method. The low efficiency of traditional measurements and also the rich species diversity of natural enemies within the infested fruits highlight the necessity of exploring effective control methods, especially environmental friendly approaches...
December 2016: Journal of Nematology
https://www.readbyqxmd.com/read/28046765/su-f-t-49-dosimetry-parameters-and-tps-commissioning-for-the-civasheet-directional-pd-103-brachytherapy-source
#4
M J Rivard
PURPOSE: The CivaSheet is a new LDR Pd-103 brachytherapy device offering directional-radiation for preferentially irradiating malignancies with healthy-tissue sparing. Observations are presented on dosimetric characterization, TPS commissioning, and evaluation of the dosesuperposition- principle for summing individual elements comprising a planar CivaSheet METHODS: The CivaSheet comprises individual sources (CivaDots, 0.05cm thick and 0.25cm diam.) inside a flexible bioabsorbable substrate with a 0...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28026727/radiological-changes-after-interspinous-dynamic-stabilisation-for-lateral-stenosis-of-lumbar-spinal-canal-a-parallel-group-randomised-trial
#5
RANDOMIZED CONTROLLED TRIAL
J Mohar, M Cimerman
PURPOSE OF THE STUDY Interspinous dynamic stabilisation devices (IDSDs) are used for stabilisation and indirect decompression of the spinal motion segment in minimally invasive treatment of degenerative conditions of lumbar spine. Good methodological quality studies on biomechanical effects of IDSDs are lacking in scientific literature. The purpose of this study was to evaluate the biomechanical effect of dynamic IDSD implantation on a spinal motion segment. MATERIAL AND METHODS We conducted a parallel group randomised trial (RT) on twelve patients, comparing radiological stabilisation and indirect decompression outcome measures between groups of patients with an isolated degenerative condition of L4-L5 motion segment and unilateral L5 nerve root radiculopathy...
2016: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/27895641/pneumococcal-polysaccharide-vaccination-elicits-igg-anti-a-b-blood-group-antibodies-in-healthy-individuals-and-patients-with-type-i-diabetes-mellitus
#6
Wendelin Wolfram, Kai M T Sauerwein, Christoph J Binder, Nicole Eibl-Musil, Hermann M Wolf, Michael B Fischer
HYPOTHESIS: Blood group antibodies are natural antibodies that develop early in life in response to cross-reactive environmental antigens in the absence of antigen encounter. Even later in life structural similarities in saccharide composition between environmental antigens such as bacterial polysaccharides and blood group A/B antigens could lead to changes in serum levels, IgM/IgG isotype, and affinity maturation of blood group anti-A/B antibodies. We addressed the question whether immunization with pneumococcal polysaccharide (PnP) vaccine Pneumo 23 Vaccine "Pasteur Merieux" (Pn23) could have such an effect in patients with type I diabetes mellitus (DM I), an autoimmune disease where an aberrant immune response to microbial antigens likely plays a role...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27847581/foreign-body-reaction-after-implantation-of-a-device-for-intervertebral-assisted-motion
#7
Jun-Yeong Seo, Kee-Yong Ha, Young-Hoon Kim, Joo-Hyun Ahn
The device for intervertebral assisted motion (DIAM) is a dynamic implant that consists of a silicone bumper enveloped by a polyethylene terephthalate (PET) fiber sack. Silicone and PET were used because of their biological inertness, but repetitive motion of the spine can cause wear on the implant nonetheless. The purpose of this study is to report a case of foreign body reaction (FBR) against a DIAM. A 72-year-old female patient presented with lower back pain and both legs radiating pain. She had undergone DIAM implantation at L4-5 for spinal stenosis 5 years previously...
November 2016: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/27832605/bdnf-effects-on-functional-recovery-across-motor-behaviors-after-cervical-spinal-cord-injury
#8
Vivian Hernandez-Torres, Heather M Gransee, Carlos B Mantilla, Yao Wang, Wen-Zhi Zhan, Gary C Sieck
Unilateral C2 cervical spinal cord hemisection (SH) disrupts descending excitatory drive to phrenic motor neurons, thereby paralyzing the ipsilateral diaphragm muscle (DIAm) during ventilatory behaviors. Recovery of rhythmic DIAm activity ipsilateral to injury occurs over time, consistent with neuroplasticity and strengthening of spared synaptic inputs to phrenic motor neurons. Localized intrathecal delivery of brain-derived neurotrophic factor (BDNF) to phrenic motor neurons after SH enhances recovery of eupneic DIAm activity...
November 9, 2016: Journal of Neurophysiology
https://www.readbyqxmd.com/read/27826214/clinical-outcome-following-diam-implantation-for-symptomatic-lumbar-internal-disk-disruption-a-3-year-retrospective-analysis
#9
Kang Lu, Po-Chou Liliang, Hao-Kuang Wang, Jui-Sheng Chen, Te-Yuan Chen, Ruyi Huang, Han-Jung Chen
BACKGROUND/OBJECTIVE: Internal disk disruption (IDD), an early event of lumbar disk degeneration, is the most common cause of low back pain. Since increased intradiskal pressure (IDP) is associated with symptoms and progression of disk degeneration, unloading a painful disk with an interspinous process device (IPD) is a rational treatment option. The goal of this study was to evaluate the effectiveness of dynamic stabilization with an IPD in the treatment of symptomatic IDD of the lumbar spine...
2016: Journal of Pain Research
https://www.readbyqxmd.com/read/27704286/herniectomy-versus-herniectomy-with-the-diam-spinal-stabilization-system-in-patients-with-sciatica-and-concomitant-low-back-pain-results-of-a-prospective-randomized-controlled-multicenter-trial
#10
Ferdinand Krappel, Marco Brayda-Bruno, Giovanni Alessi, Jean-Michel Remacle, Luis Alberto Lopez, Jesus Javier Fernández, Gianluca Maestretti, Christian W A Pfirrmann
PURPOSE: To investigate the short and medium term efficacy and patient outcomes of DIAM spinal stabilization system on back pain, disability, leg pain and quality of life. METHODS: 165 patients were enrolled; 146 patients with a single level disc herniation (L2 to L5) were randomized: 75 investigational (herniectomy and DIAM) and 71 control (herniectomy alone) treated and followed up for 24 months. RESULTS: Significant improvements overtime (P < 0...
October 4, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27605858/direct-antiglobulin-test-positivity-in-multi-transfused-thalassemics
#11
Ashish Jain, Ajju Agnihotri, Neelam Marwaha, Ratti Ram Sharma
INTRODUCTION: Red cell allo- and auto-immunization is a well recognized problem in multi-transfused thalassemic patients. We conducted this study on 301 multi-transfused thalassemic patients under the Thalassemia Transfusion Programme of Advanced Pediatric Centre of PGIMER. AIMS AND OBJECTIVES: The study was designed to determine the frequency of alloimmunization and autoimmunization in multi-transfused thalassemic patients and to establish the specificity of alloantibody to red cell antigens, if alloimmunization is detected...
July 2016: Asian Journal of Transfusion Science
https://www.readbyqxmd.com/read/27499550/effect-of-using-2mm-voxels-on-observer-performance-for-pet-lesion-detection
#12
A Michael Morey, Frédéric Noo, Dan J Kadrmas
Positron emission tomography (PET) images are typically reconstructed with an in-plane pixel size of approximately 4mm for cancer imaging. The objective of this work was to evaluate the effect of using smaller pixels on general oncologic lesion-detection. A series of observer studies was performed using experimental phantom data from the Utah PET Lesion Detection Database, which modeled whole-body FDG PET cancer imaging of a 92kg patient. The data comprised 24 scans over 4 days on a Biograph mCT time-of-flight (TOF) PET/CT scanner, with up to 23 lesions (diam...
June 2016: IEEE Transactions on Nuclear Science
https://www.readbyqxmd.com/read/27477395/distribution-partitioning-and-bioaccumulation-of-substituted-diphenylamine-antioxidants-and-benzotriazole-uv-stabilizers-in-an-urban-creek-in-canada
#13
Zhe Lu, Amila O De Silva, Thomas E Peart, Cyril J Cook, Gerald R Tetreault, Mark R Servos, Derek C G Muir
Substituted diphenylamine antioxidants (SDPAs) and benzotriazole UV stabilizers (BZT-UVs), previously under reported classes of organic contaminants, were determined in sediment, water, and freshwater biota in an urban creek in Canada. SDPAs and BZT-UVs were frequently detected in all matrices including upstream of the urban area in a rural agricultural/woodlot region, suggesting a ubiquitous presence and bioaccumulation of these emerging contaminants. Spatial comparisons were characterized by higher levels of SDPAs downstream compared with the upstream, implying a possible influence of the urban activities on the antioxidant contamination in the sampling area...
September 6, 2016: Environmental Science & Technology
https://www.readbyqxmd.com/read/27470789/description-of-cryptaphelenchus-iranicus-n-sp-nematoda-ektaphelenchinae-recovered-from-bark-samples-of-pinus-nigra-from-iran
#14
Mehrab Esmaeili, Ramin Heydari, Zahra Majd Taheri, Yiwu Fang, Hongmei Li
Cryptaphelenchus iranicus n. sp., recovered from bark and wood samples of a weakened Pinus nigra in Kermanshah Province, western Iran, is described. The new species has females with body length of 250-330 µm and males 230-275 µm long, lip region set-off from body contour, 7-8 μm long stylet with small basal swellings, excretory pore located at 1.5-2.0 body diam. posterior to median bulb, post-vulval uterine sac short, 7-10 µm long and conical female posterior body end (tail) ending to a pointed tip. Males of the new species have seven (1+2+2+2) caudal papillae and a short mucro at tail tip...
July 19, 2016: Zootaxa
https://www.readbyqxmd.com/read/27451970/investigation-of-rotavirus-with-various-methods-in-children-with-acute-gastroenteritis-and-determination-of-its-molecular-epidemiology-in-kayseri-province-turkey
#15
Sukran Artiran, Altay Atalay, Selma Gökahmetoglu, Mehmet Adnan Ozturk, Nurgul Balci, Nuri Cakir, Huseyin Kilic, Riza Durmaz
BACKGROUND: In this study, the fresh stool samples from 254 children under 5 years of age with acute gastroenteritis which were delivered between October 2012 and December 2013 were collected. METHODS: In the stool samples, rotavirus antigens were investigated using two different immunochromatographic methods which are routinely used at different times, namely the RIDA(®) QUICK Rotavirus/Adenovirus Combi Test (R-Biopharm AG, Germany) and the Genx(®) Rotavirus Test (Diamed-Lab, Turkey), in addition to the Rotavirus Ag (Stool) ELISA (DRG, Germany) kit...
July 25, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27438402/lumbar-spinous-process-fixation-and-fusion-a-systematic-review-and-critical-analysis-of-an-emerging-spinal-technology
#16
Alejandro J Lopez, Justin K Scheer, Nader S Dahdaleh, Alpesh A Patel, Zachary A Smith
STUDY DESIGN: A systematic review. OBJECTIVE: The available literature on interspinous rigid fixation/fusion devices (IFD) was systematically reviewed to explore the devices' efficacy and complication profile. SUMMARY OF BACKGROUND DATA: The clinical application of new spinal technologies may proceed without well-established evidence, as is the case with IFDs. IFDs are plate-like devices that are attached to the lateral aspects of 2 adjacent spinous processes to promote rigidity at that segment...
July 19, 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27425756/simultaneous-determination-of-substituted-diphenylamine-antioxidants-and-benzotriazole-ultra-violet-stabilizers-in-blood-plasma-and-fish-homogenates-by-ultra-high-performance-liquid-chromatography-electrospray-tandem-mass-spectrometry
#17
Zhe Lu, Thomas E Peart, Cyril J Cook, Amila O De Silva
Analytical methods were developed for the determination of eight substituted diphenylamines (SDPAs) and six benzotriazole UV stabilizers (BZT-UVs) in blood plasma and fish homogenate matrices. Liquid-liquid extraction by methyl tert-butyl ether and denaturation by KOH following silica gel packed column clean-up was employed for blood plasma preparation. For the fish homogenate samples, ultrasonic assisted solvent extraction combined with automated gel permeation chromatography and silica gel packed column clean-up was used...
August 26, 2016: Journal of Chromatography. A
https://www.readbyqxmd.com/read/27415240/dynamics-of-an-optically-confined-nanoparticle-diffusing-normal-to-a-surface
#18
Perry Schein, Dakota O'Dell, David Erickson
Here we measure the hindered diffusion of an optically confined nanoparticle in the direction normal to a surface, and we use this to determine the particle-surface interaction profile in terms of the absolute height. These studies are performed using the evanescent field of an optically excited single-mode silicon nitride waveguide, where the particle is confined in a height-dependent potential energy well generated from the balance of optical gradient and surface forces. Using a high-speed cmos camera, we demonstrate the ability to capture the short time-scale diffusion dominated motion for 800-nm-diam polystyrene particles, with measurement times of only a few seconds per particle...
June 2016: Physical Review. E
https://www.readbyqxmd.com/read/27351342/study-of-red-blood-cell-alloimmunization-risk-factors-in-multiply-transfused-thalassemia-patients-role-in-improving-thalassemia-transfusion-practice-in-fayoum-egypt
#19
Abeer Mohamed Abdelrazik, Shahira Morsy Elshafie, Manal Niazi El Said, Ghada M Ezzat Ahmed, Al-Kassem Ahmed Al-Gamil, Mona Gamal Mostafa El Nahhas, Ahmed Ali Badie Sady
BACKGROUND: β-Thalassemia is considered the most common chronic hemolytic anemia in Egypt. Alloimmunization can lead to serious clinical complications in transfusion-dependent patients. The objective of this study was to determine the frequency and types of alloantibodies, and, in addition, to study the risk factors that might influence alloimmunization in multiply transfused thalassemia patients in Fayoum, Egypt, with the goal that this study could help minimize some of the transfusion-associated risks in those patients...
September 2016: Transfusion
https://www.readbyqxmd.com/read/27168651/molecular-and-morphological-characterization-of-aphelenchoides-fuchsi-sp-n-nematoda-aphelenchoididae-isolated-from-pinus-eldarica-in-western-iran
#20
Mehrab Esmaeili, Ramin Heydari, Mozhgan Ziaie, Jianfeng Gu
Aphelenchoides fuchsi sp. n. is described and illustrated from bark and wood samples of a weakened Mondell pine in Kermanshah Province, western Iran. The new species has body length of 332 to 400 µm (females) and 365 to 395 µm (males). Lip region set off from body contour. The cuticle is weakly annulated, and there are four lines in the lateral field. The stylet is 8 to 10 μm long and has small basal swellings. The excretory pore is located ca one body diam. posterior to metacorpus valve or 51 to 62 μm from the head...
March 2016: Journal of Nematology
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