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https://www.readbyqxmd.com/read/27922241/an-unusual-case-of-neuroblastoma-a-17-year-old-adolescent-presented-with-bilateral-diffuse-lung-metastasis-at-initial-diagnosis
#1
Çağlar Ödek, Tanıl Kendirli, Esra Pekpak, Ayhan Yaman, Başak Adaklı-Aksoy, Handan Dinçaslan, Nurdan Taçyıldız, Emel Ünal, Erdal İnce, Gülsan Yavuz
Neuroblastoma (NB) is the most frequently diagnosed neoplasm during infancy and its incidence declines within the first 3-5 years of life. It can be rarely diagnosed in adolescents and young adults. Adolescents have advanced stage of disease, higher frequency of uncommon metastatic sites such as lungs, and worse outcomes. Herein, we describe an unusual case of NB in a 17-year-old adolescent presented with lung metastasis at diagnosis. The patient was diagnosed with stage IV NB. Thorax high-resolution computed tomography (HRCT) scan revealed irregular septal thickening with ground glass opacity consistent with pulmonary parenchymal metastases...
2016: Turkish Journal of Pediatrics
https://www.readbyqxmd.com/read/27922206/towards-understanding-the-solvent-dynamic-control-of-the-transport-and-heterogeneous-electron-transfer-processes-in-ionic-liquids
#2
Mohsin Ahmad Bhat, Pravin P Ingole, Hyacinthe Randriamahazaka
Impact of temperature induced solvent dynamic changes on the diffusion coefficient and standard rate constant (k0) for heterogeneous electron transfer (ET) of ethylferrocene (EFc) in 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]), was investigated. The results were analyzed to understand the impact of the solvent dynamic control, solute-solvent interactions, and solvent friction on the transport of redox probes and k0. Concentration dependency of diffusion coefficient for EFc in [BMIM][PF6] was observed...
December 6, 2016: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/27922151/-68-ga-psma-hbed-cc-pet-ct-to-differentiate-between-diffuse-bone-metastases-of-prostate-cancer-and-osteopoikilosis
#3
Florian Behrendt, Thomas Krohn, Felix Mottaghy, Frederik A Verburg
No abstract text is available yet for this article.
December 6, 2016: Nuklearmedizin. Nuclear Medicine
https://www.readbyqxmd.com/read/27922072/molecular-structure-and-dynamics-of-water-on-pristine-and-strained-phosphorene-wetting-and-diffusion-at-nanoscale
#4
Wei Zhang, Chao Ye, Linbi Hong, Zaixing Yang, Ruhong Zhou
Phosphorene, a newly fabricated two-dimensional (2D) nanomaterial, has emerged as a promising material for biomedical applications with great potential. Nonetheless, understanding the wetting and diffusive properties of bio-fluids on phosphorene which are of fundamental importance to these applications remains elusive. In this work, using molecular dynamics (MD) simulations, we investigated the structural and dynamic properties of water on both pristine and strained phosphorene. Our simulations indicate that the diffusion of water molecules on the phosphorene surface is anisotropic, with strain-enhanced diffusion clearly present, which arises from strain-induced smoothing of the energy landscape...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922060/magnetic-properties-improvement-of-die-upset-nd-fe-b-magnets-by-dy-cu-press-injection-and-subsequent-heat-treatment
#5
Zexuan Wang, Jinyun Ju, Jinzhi Wang, Wenzong Yin, Renjie Chen, Ming Li, Chaoxiang Jin, Xu Tang, Don Lee, Aru Yan
Ultrafine-grained die-upset Nd-Fe-B magnets are of importance because they provide a wide researching space to redesign the textured structures. Here is presented a route to obtain a new die-upset magnet with substantially improved magnetic properties. After experiencing the optimized heat treatment, both the coercivity and remanent magnetization of the Dy-Cu press injected magnets increased substantially in comparison with those of the annealed reference magnets, which is distinct from the reported experimental results on heavy rare-earth diffusion...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27921393/the-role-of-the-microvascular-network-structure-on-diffusion-and-consumption-of-anti-cancer-drugs
#6
P Mascheroni, R Penta
We investigate the impact of microvascular geometry on the transport of drugs in solid tumors, focusing on the diffusion and consumption phenomena. We embrace recent advances in the asymptotic homogenization literature starting from a double Darcy, double advection-diffusion-reaction system of partial differential equations that is obtained exploiting the sharp length separation between the intercapillary distance and the average tumor size. The geometric information on the microvascular network is encoded into effective hydraulic conductivities and diffusivities, which are numerically computed by solving periodic cell problems on appropriate microscale representative cells...
December 6, 2016: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/27921355/catalysis-driven-self-thermophoresis-of-janus-plasmonic-nanomotors
#7
Weiwei Qin, Tianhuan Peng, Yanjing Gao, Fei Wang, Xiaocai Hu, Kun Wang, Jiye Shi, Di Li, Jicun Ren, Chunhai Fan
It is highly demanding to design active nanomotors that can move in response to specific signals with controllable rate and direction. A catalysis-driven nanomotor was constructed by designing catalytically and plasmonically active Janus gold nanoparticles (Au NPs), which generate an asymmetric temperature gradient of local solvent surrounding NPs in catalytic reactions. The self-thermophoresis behavior of the Janus nanomotor is monitored from its inherent plasmonic response. The diffusion coefficient of the self-thermophoresis motion is linearly dependent on chemical reaction rate, as described by a stochastic model...
December 6, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27921285/spatiotemporal-distribution-modeling-of-pet-tracer-uptake-in-solid-tumors
#8
Madjid Soltani, Mostafa Sefidgar, Hossein Bazmara, Michael E Casey, Rathan M Subramaniam, Richard L Wahl, Arman Rahmim
OBJECTIVE: Distribution of PET tracer uptake is elaborately modeled via a general equation used for solute transport modeling. This model can be used to incorporate various transport parameters of a solid tumor such as hydraulic conductivity of the microvessel wall, transvascular permeability as well as interstitial space parameters. This is especially significant because tracer delivery and drug delivery to solid tumors are determined by similar underlying tumor transport phenomena, and quantifying the former can enable enhanced prediction of the latter...
December 5, 2016: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/27921204/a-case-of-double-depressor-palsy-followed-by-pursuit-deficit-due-to-sequential-infarction-in-bilateral-thalamus-and-right-medial-superior-temporal-area
#9
Su Jin Kim, Myeong In Yeom, Seung Uk Lee
BACKGROUND: We present a unique case of a patient who suffered two rare events affecting the supranuclear control, first of the vertical and second of the horizontal eye movements. The first event involved bilateral thalamic infarcts that resulted in double depressor palsy. The second event occurred 1 year later and it involved supranuclear control of horizontal eye movements creating pursuit deficit. CASE PRESENTATION: A 47-year-old male presented with complaints of diplopia upon awakening...
December 5, 2016: International Ophthalmology
https://www.readbyqxmd.com/read/27921171/computed-tomography-and-magnetic-resonance-fusion-imaging-in-cholesteatoma-preoperative-assessment
#10
Agustín Campos, Federico Mata, Rosa Reboll, María Luisa Peris, Jorge Basterra
The purpose of this study is to describe a method for developing fusion imaging for the preoperative evaluation of cholesteatoma. In 33 patients diagnosed with cholesteatoma, a high-resolution temporal bone computed tomography (CT) scan without intravenous contrast and propeller diffusion-weighted magnetic resonance imaging (MRI) were performed. Both studies were then sent to the BrainLAB work station, where the images were fused to obtain a morphological and color map. Intraoperative findings coincided with fusion CT-MRI imaging in all but two patients...
December 5, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27921168/the-2016-diagnostic-criteria-for-primary-sclerosing-cholangitis
#11
Takahiro Nakazawa, Kenji Notohara, Susumu Tazuma, Atsushi Tanaka, Hiroyuki Isayama, Toshio Tsuyuguchi, Toshiyuki Mori, Hajime Takikawa
BACKGROUND: Primary sclerosing cholangitis (PSC) is a chronic cholestatic liver disease of unknown cause that is characterized pathologically by an inflammatory and fibrotic process centered on the epithelium, leading to diffuse biliary stenosis and increased wall thickness throughout the intra- and extra-hepatic biliary trees. A nationwide survey in Japan revealed several differences in the clinical aspects of PSC between Japan and Western countries. PSC was recently designated an intractable hepatobiliary disease in Japan...
December 5, 2016: Journal of Gastroenterology
https://www.readbyqxmd.com/read/27921105/ultrasmall-silver-nanoclusters-highly-efficient-antibacterial-activity-and-their-mechanisms
#12
Jian-Cheng Jin, Xiao-Juan Wu, Juan Xu, Bei-Bei Wang, Feng-Lei Jiang, Yi Liu
Silver materials have been widely used as antimicrobial agents. Notably, silver nanoparticles have emerged as a new generation of nanoproducts for biomedical and environmental applications in recent years. However, ultrasmall silver nanoclusters (NCs) (∼2 nm) have rarely been used to kill bacteria and their antibacterial mechanisms have not yet been fully elucidated. Herein, we studied the antibacterial activities of bifunctional fluorescent DHLA-AgNCs against three types of bacteria. The results showed that DHLA-AgNCs exhibited excellent antibacterial activities against Gram-negative E...
December 6, 2016: Biomaterials Science
https://www.readbyqxmd.com/read/27921060/klippel-trenaunay-syndrome-of-the-rectosigmoid-colon-presenting-as-severe-anemia
#13
Eula Plana Tetangco, Hafiz Muhammad Sharjeel Arshad, Rogelio Silva
A 23-year-old female with Klippel-Trenaunay syndrome presented with abdominal pain and severe anemia. Colonoscopy revealed diffuse venous congestion extending circumferentially from the midsigmoid to the rectum, with multiple large varicosities. This case emphasizes that Klippel-Trenaunay syndrome may have visceral manifestations beyond the classic presentation, which can be a significant source of morbidity and mortality.
August 2016: ACG Case Reports Journal
https://www.readbyqxmd.com/read/27920938/comparison-of-effectiveness-between-cork-screw-and-peg-screw-electrodes-for-transcranial-motor-evoked-potential-monitoring-using-the-finite-element-method
#14
Ryosuke Tomio, Takenori Akiyama, Takayuki Ohira, Kazunari Yoshida
BACKGROUND: Intraoperative monitoring of motor evoked potentials by transcranial electric stimulation is popular in neurosurgery for monitoring motor function preservation. Some authors have reported that the peg-screw electrodes screwed into the skull can more effectively conduct current to the brain compared to subdermal cork-screw electrodes screwed into the skin. The aim of this study was to investigate the influence of electrode design on transcranial motor evoked potential monitoring...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/27920923/mer-tri-chlorido-tris-tetra-hydro-thio-phene-%C3%AE%C2%BAs-iridium-iii-preparation-and-comparison-with-other-mer-tri-chlorido-tris-tetra-hydro-thio-phene-%C3%AE%C2%BAs-metal-complexes
#15
Loren C Brown, Christine M DuChane, Joseph S Merola
The title complex, [IrCl3(C4H8S)3], was prepared according to a literature method. A suitable crystal was obtained by diffusion of pentane into a di-chloro-methane solution and analyzed by single-crystal X-ray diffraction at 100 K. The title complex is isotypic with mer-tri-chlorido-tris-(tetra-hydro-thio-phene-κS)rhodium(III). However, the orientation of the tetra-hydro-thio-phene rings is different from an earlier report of mer-tri-chlorido-tris-(tetra-hydro-thio-phene-κS)iridium(III) deposited in the Cambridge Structural Database...
September 1, 2016: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/27920897/impact-of-biopolymer-matrices-on-relaxometric-properties-of-contrast-agents
#16
Alfonso Maria Ponsiglione, Maria Russo, Paolo Antonio Netti, Enza Torino
Properties of water molecules at the interface between contrast agents (CAs) for magnetic resonance imaging and macromolecules could have a valuable impact on the effectiveness of metal chelates. Recent studies, indeed, demonstrated that polymer architectures could influence CAs' relaxivity by modifying the correlation times of the metal chelate. However, an understanding of the physico-chemical properties of polymer/CA systems is necessary to improve the efficiency of clinically used CAs, still exhibiting low relaxivity...
December 6, 2016: Interface Focus
https://www.readbyqxmd.com/read/27920875/diffuse-thyroid-metastases-and-bilateral-internal-jugular-vein-tumor-thrombus-from-renal-cell-cancer
#17
Priyanka Jha, Mallika Shekhar, Jennifer Wan, Carina Mari-Aparici
Renal cell cancer rarely metastasizes to the thyroid gland, and it has been reported to present as a solitary mass. We present a case of diffuse thyroid cancer metastases from renal cell cancer. Bilateral internal jugular vein tumor thrombi were also present. To the best of our knowledge, this is the first description of diffuse thyroid metastases from renal cell cancer in the English literature. Renal cell cancer metastases should be considered in the differential of thyroid imaging abnormalities arising in the setting of known renal cell carcinoma, particularly late in the course of disease...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27920873/migratory-stroke-like-lesions-in-a-case-of-adult-onset-mitochondrial-encephalomyopathy-lactic-acidosis-and-stroke-like-episodes-melas-syndrome-and-a-review-of-imaging-findings
#18
Stephen S Cai, Rainer von Coelln, Theresa J Kouo
Imaging findings of adult-onset mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes (MELAS) syndrome is poorly documented. The authors present a 48-year-old woman with subacute onset of word-finding difficulties and right arm stiffness. Magnetic resonance imaging performed 2 weeks prior revealed left temporal lobe diffusion and fluid-attenuated inversion recovery hyperintensity predominantly involving the cortex. The apparent diffusion coefficient map showed preserved signal in the temporal cortex...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27920853/magnetic-resonance-imaging-of-adenoma-malignum-of-the-uterine-cervix-with-pathologic-correlation-a-case-report
#19
Alba Castán Senar, Blanca Paño, Adela Saco, Carlos Nicolau
Adenoma malignum (AM) is considered a rare subtype of cervical adenocarcinoma. Although previous reports have described magnetic resonance findings, none of these reports evaluated the utility of diffusion-weighted imaging in the differential diagnosis of AM and other multicystic cervical lesions. We present a case report of an AM that did not show restriction on the apparent diffusion coefficient map, which can be explained by the low cellularity of the tumor. This is consistent with the proper correlation between the diffusion imaging and histopathology of the tumor...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27920802/the-role-of-drugs-in-bone-pain
#20
REVIEW
Francesco Marras, Paolo Tranquilli Leali
: Painful symptomatology in the skeletal system can be found in various pathological conditions and can be either localised or diffused. Bone tenderness is common in those who are of an elderly age. TREATMENT STRATEGY: Patients should be informed of the possible causes of their pain and the different therapies that could alleviate it; furthermore they should be encouraged to have an active role in their therapy. It is necessary to prevent the onset of the pain (by the clock) by considering the biological half-life, the bioavailability and the duration of action of the therapy...
May 2016: Clinical Cases in Mineral and Bone Metabolism
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