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https://www.readbyqxmd.com/read/28927232/association-between-intradialytic-central-venous-oxygen-saturation-and-ultrafiltration-volume-in-chronic-hemodialysis-patients
#1
Hanjie Zhang, Lili Chan, Anna Meyring-Wösten, Israel Campos, Priscila Preciado, Jeroen P Kooman, Frank M van der Sande, Doris Fuertinger, Stephan Thijssen, Peter Kotanko
Background: Cardiac disease is highly prevalent in hemodialysis (HD) patients. Decreased tissue perfusion, including cardiac, due to high ultrafiltration volumes (UFVs) is considered to be one of the drivers of cardiac dysfunction. While central venous oxygen saturation (ScvO 2 ) is frequently used as an indicator of cardiac output in non-uremic populations, the relationship of ScvO 2 and UFV in HD patients remains unclear. Our aim was to determine how intradialytic ScvO 2 changes associate with UFV...
September 12, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28927215/effect-of-fibrin-glue-injection-into-the-cavernous-sinus-for-hemostasis-during-transcavernous-surgery-on-the-cerebral-venous-draining-system
#2
Terushige Toyooka, Naoki Otani, Kojiro Wada, Arata Tomiyama, Hideaki Ueno, Kazuya Fujii, Takuji Yamamoto, Yasuaki Nakao, Kentaro Mori
BACKGROUND: The extradural temporopolar transcavernous approach can be used to treat central skull base pathologies, but control of bleeding from the opened cavernous sinus is essential. Oxidized cellulose cotton packing and fibrin glue injection can be used, but the effect on the postoperative venous draining pattern remains unclear. OBJECTIVE: To investigate changes in the venous drainage pattern immediately after transcavernous surgery with and without fibrin glue injection into the bleeding cavernous sinus...
April 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28927210/navigation-and-image-injection-for-control-of-bone-removal-and-osteotomy-planes-in-spine-surgery
#3
Michael Kosterhon, Angelika Gutenberg, Sven Rainer Kantelhardt, Elefterios Archavlis, Alf Giese
BACKGROUND AND IMPORTANCE: In contrast to cranial interventions, neuronavigation in spinal surgery is used in few applications, not tapping into its full technological potential. We have developed a method to preoperatively create virtual resection planes and volumes for spinal osteotomies and export 3-D operation plans to a navigation system controlling intraoperative visualization using a surgical microscope's head-up display. The method was developed using a Sawbone ® model of the lumbar spine, demonstrating feasibility with high precision...
April 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28927206/preoperative-magnetic-resonance-and-intraoperative-computed-tomography-fusion-for-real-time-neuronavigation-in-intramedullary-lesion-surgery
#4
Francesco Costa, Alessandro Ortolina, Andrea Cardia, Marco Riva, Martina Revay, Guido Pecchioli, Carla Daniela Anania, Francesco Asteggiano, Maurizio Fornari
BACKGROUND: Image-guided surgery techniques in spinal surgery are usually based upon fluoroscopy or computed tomography (CT) scan, which allow for a real-time navigation of bony structures, though not of neural structures and soft tissue remains. OBJECTIVE: To verify the effectiveness and efficacy of a novel technique of imaging merging between preoperative magnetic resonance imaging (MRI) and intraoperative CT scan during removal of intramedullary lesions. METHODS: Ten consecutive patients were treated for intramedullary lesions using a navigation system aid...
April 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28927125/benign-metastasizing-leiomyoma-and-18-fdg-pet-ct-a-case-report-and-literature-review
#5
Yusuke Sawai, Toshiki Shimizu, Yuta Yamanaka, Maiko Niki, Shosaku Nomura
Pulmonary benign metastasizing leiomyoma (PBML) is a rare disease entity that usually occurs in females of reproductive age with a previous history of uterine myoma. It is typically characterized by multiple pulmonary tumors consisting of benign leiomyoma cells. In the present study, two cases of PBML are discussed. The patient in each case underwent 2-deoxy-2-(fluorine-18)-fluoro-D-glucose positron emission tomography/computed tomography (18-FDG-PET/CT) scans. One patient demonstrated a lack of 18-FDG uptake and a quiescent clinical course...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927093/detailed-analysis-of-a-superficial-cd34-positive-fibroblastic-tumor-a-case-report-and-review-of-the-literature
#6
Kensaku Yamaga, Akihiro Fujita, Mari Osaki, Satoshi Kuwamoto, Naoko Ishiguro, Tadahito Yamamoto, Hideki Nagashima
Superficial cluster of differentiation (CD)34-positive fibroblastic tumor (SCPFT) is a rare mesenchymal neoplasm of borderline malignancy. It is characterized by a superficial location, marked cellular pleomorphism, an extremely low incidence of mitotic figures, and strong CD34 immunohistochemical positivity. As SCPFT is a recently described neoplasm, its characteristics are yet to be fully elucidated. To the best of our knowledge, no detailed studies regarding the imaging findings and cytogenetic analyses of SCPFTs exist...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927073/surgical-treatment-of-parapharyngeal-space-tumors-a-report-of-29-cases
#7
Kei Ijichi, Shingo Murakami
The present study aimed to establish a strategy for parapharyngeal space (PPS) tumor surgery based on preoperative symptoms, clinical signs, imaging and histological examination. A retrospective cohort study was conducted with 29 adult patients who underwent surgery for primary PPS tumors from 2008-2015. The following data was obtained: Preoperative symptoms of the patient, histological type of the tumor, surgical approach and complications. Of the 29 patients who underwent surgery to remove a PPS tumor, 16 presented with neurogenic tumors and 13 with salivary gland tumors...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927048/mucoepidermoid-carcinoma-of-the-sublingual-gland-harboring-a-translocation-of-the-maml2-gene-a-case-report
#8
Kiminobu Sato, Jun Akiba, Ken Nakamura, Hideyuki Abe, Akihiko Kawahara, Takeichiro Aso, Hirohito Umeno, Hiroshi Harada, Hirohisa Yano
Among tumors of the major salivary glands, tumors in the sublingual gland are rare. Although mucoepidermoid carcinoma (MEC) represents a histological type of salivary gland tumor, it is occasionally difficult to diagnose due to its histological variation. The present study reports a case of MEC harboring a mastermind-like transcriptional coactivator 2 (MAML2) gene translocation in the sublingual gland. A 76-year-old Japanese woman with a mass in the left submandibular region was referred to Kurume University Hospital (Kurume, Japan)...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927030/implementation-of-diffusion-weighted-magnetic-resonance-imaging-in-target-delineation-of-central-lung-cancer-accompanied-with-atelectasis-in-precision-radiotherapy
#9
Xinli Zhang, Zheng Fu, Guanzhong Gong, Hong Wei, Jinghao Duan, Zhaoqiu Chen, Xiangming Chen, Ruozheng Wang, Yong Yin
Radiotherapy, particularly the target delineation of cancer based on scanned images, plays a key role in the planning of cancer treatment. Recently, diffusion-weighted magnetic resonance imaging (DW-MRI) has emerged as a prospective superior procedure compared with intensified computed tomography (CT) and positron emission tomography (PET) in the target delineation of cancer. However, the implication of DW-MRI in lung cancer, the leading cause of cancer-associated mortality worldwide, has not been extensively evaluated...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28926957/combining-a-multi-agent-system-and-communication-middleware-for-smart-home-control-a-universal-control-platform-architecture
#10
Song Zheng, Qi Zhang, Rong Zheng, Bi-Qin Huang, Yi-Lin Song, Xin-Chu Chen
In recent years, the smart home field has gained wide attention for its broad application prospects. However, families using smart home systems must usually adopt various heterogeneous smart devices, including sensors and devices, which makes it more difficult to manage and control their home system. How to design a unified control platform to deal with the collaborative control problem of heterogeneous smart devices is one of the greatest challenges in the current smart home field. The main contribution of this paper is to propose a universal smart home control platform architecture (IAPhome) based on a multi-agent system and communication middleware, which shows significant adaptability and advantages in many aspects, including heterogeneous devices connectivity, collaborative control, human-computer interaction and user self-management...
September 16, 2017: Sensors
https://www.readbyqxmd.com/read/28926940/stress-exposure-and-physical-mental-and-behavioral-health-among-american-indian-adults-with-type-2-diabetes
#11
Melissa L Walls, Kelley J Sittner, Benjamin D Aronson, Angie K Forsberg, Les B Whitbeck, Mustafa al'Absi
American Indian (AI) communities experience disproportionate exposure to stressors and health inequities including type 2 diabetes. Yet, we know little about the role of psychosocial stressors for AI diabetes-related health outcomes. We investigated associations between a range of stressors and psychological, behavioral, and physical health for AIs with diabetes. This community-based participatory research with 5 AI tribes includes 192 AI adult type 2 diabetes patients recruited from clinical records at tribal clinics...
September 16, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28926765/texture-and-art-with-deep-neural-networks
#12
REVIEW
Leon A Gatys, Alexander S Ecker, Matthias Bethge
Although the study of biological vision and computer vision attempt to understand powerful visual information processing from different angles, they have a long history of informing each other. Recent advances in texture synthesis that were motivated by visual neuroscience have led to a substantial advance in image synthesis and manipulation in computer vision using convolutional neural networks (CNNs). Here, we review these recent advances and discuss how they can in turn inspire new research in visual perception and computational neuroscience...
September 16, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/28926715/optical-forging-of-graphene-into-three-dimensional-shapes
#13
Andreas Johansson, Pasi Myllyperkiö, Pekka Koskinen, Jukka Aumanen, Juha Tapio Koivistoinen, Hung-Chieh Tsai, Chia-Hao Chen, Lo-Yueh Chang, Vesa-Matti Hiltunen, Jyrki Manninen, Wei-Yen Woon, Mika Pettersson
Atomically thin materials, such as graphene, are the ultimate building blocks for nanoscale devices. But although their synthesis and handling today are routine, all efforts thus far have been restricted to flat natural geometries, since the means to control their three-dimensional (3D) morphology has remained elusive. Here we show that, just as a blacksmith uses a hammer to forge a metal sheet into 3D shapes, a pulsed laser beam can forge graphene sheet into controlled 3D shapes in the nanoscale. The forging mechanism is based on laser-induced local expansion of graphene, as confirmed by computer simulations using thin sheet elasticity theory...
September 19, 2017: Nano Letters
https://www.readbyqxmd.com/read/28926712/pyrophosphate-release-in-the-protein-hiv-reverse-transcriptase
#14
Murat Atiş, Kenneth A Johnson, Ron Elber
Enzymatic reactions usually occur in several steps: A step of substrate binding to the surface of the protein, a step of protein re-organization around the substrate and conduction of a chemical reaction, and a step of product release. The release of inorganic phosphate - PPi - from the matrix of the protein HIV reverse transcriptase is investigated computationally. Atomically detailed simulations with explicit solvent are analyzed to obtain the free energy profile, mean first passage time, and detailed molecular mechanisms of PPi escape...
September 19, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28926710/structure-vibrational-frequencies-and-bond-energies-of-the-brhgox-and-brhgxo-species-formed-in-atmospheric-mercury-depletion-events
#15
Yuge Jiao, Theodore Simon Dibble
Photochemistry during the polar Spring leads to atmospheric mercury depletion events (AMDEs): Hg(0), which typically lives for months in the atmosphere, can experience losses of more than 90% in less than a day. These dramatic losses are known to be initiated largely by Br + Hg + M → BrHg• + M, but the fate of BrHg• is a matter of guesswork. It is believed that BrHg• largely reacts with halogen oxides, XO (X = Cl, Br, and I) to form BrHgOX compounds, but these species have never been studied experimentally...
September 19, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28926706/structural-and-kinetic-characterization-of-the-intrinsically-disordered-protein-sev-ntail-through-enhanced-sampling-simulations
#16
Mattia Bernetti, Matteo Masetti, Fabio Pietrucci, Martin Blackledge, Malene Ringkjøbing Jensen, Maurizio Recanatini, Luca Mollica, Andrea Cavalli
Intrinsically disordered proteins (IDPs) are emerging as an important class of the proteome. Being able to interact with different molecular targets, they participate in many physiological and pathological activities. However, due to their intrinsically heterogeneous nature, determining the equilibrium properties of IDPs is still a challenge for biophysics. Herein, we applied state-of-the-art enhanced sampling methods to Sev NTAIL, a test case of IDPs, and constructed a bin-based kinetic model to unveil the underlying kinetics...
September 19, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28926610/image-similarity-evaluation-of-the-bulk-density-assigned-synthetic-ct-derived-from-mri-of-intracranial-regions-for-radiation-treatment
#17
Shin-Wook Kim, Hun-Joo Shin, Jin-Ho Hwang, Jin-Sol Shin, Sung-Kwang Park, Jin-Young Kim, Ki-Jun Kim, Chul-Seung Kay, Young-Nam Kang
OBJECTIVE: Various methods for radiation-dose calculation have been investigated over previous decades, focusing on the use of magnetic resonance imaging (MRI) only. The bulk-density-assignment method based on manual segmentation has exhibited promising results compared to dose-calculation with computed tomography (CT). However, this method cannot be easily implemented in clinical practice due to its time-consuming nature. Therefore, we investigated an automatic anatomy segmentation method with the intention of providing the proper methodology to evaluate synthetic CT images for a radiation-dose calculation based on MR images...
2017: PloS One
https://www.readbyqxmd.com/read/28926593/target-directed-motor-imagery-of-the-lower-limb-enhances-event-related-desynchronization
#18
Kosuke Kitahara, Yoshikatsu Hayashi, Shiro Yano, Toshiyuki Kondo
Event-related desynchronization/synchronization (ERD/S) is an electroencephalogram (EEG) feature widely used as control signals for Brain-Computer Interfaces (BCIs). Nevertheless, the underlying neural mechanisms and functions of ERD/S are largely unknown, thus investigating them is crucial to improve the reliability of ERD/S-based BCIs. This study aimed to identify Motor Imagery (MI) conditions that enhance ERD/S. We investigated following three questions: 1) whether target-directed MI affects ERD/S, 2) whether MI with sound imagery affects ERD/S, and 3) whether ERD/S has a body part dependency of MI...
2017: PloS One
https://www.readbyqxmd.com/read/28926580/simple-yet-effective-historical-proximity-variables-improve-the-species-distribution-models-for-invasive-giant-hogweed-heracleum-mantegazzianum-s-l-in-poland
#19
Piotr Mędrzycki, Ingeborga Jarzyna, Artur Obidziński, Barbara Tokarska-Guzik, Zofia Sotek, Piotr Pabjanek, Adam Pytlarczyk, Izabela Sachajdakiewicz
Species distribution models are scarcely applicable to invasive species because of their breaking of the models' assumptions. So far, few mechanistic, semi-mechanistic or statistical solutions like dispersal constraints or propagule limitation have been applied. We evaluated a novel quasi-semi-mechanistic approach for regional scale models, using historical proximity variables (HPV) representing a state of the population in a given moment in the past. Our aim was to test the effects of addition of HPV sets of different minimal recentness, information capacity and the total number of variables on the quality of the species distribution model for Heracleum mantegazzianum on 116000 km2 in Poland...
2017: PloS One
https://www.readbyqxmd.com/read/28926574/correction-lumpgem-systematic-generation-of-subnetworks-and-elementally-balanced-lumped-reactions-for-the-biosynthesis-of-target-metabolites
#20
(no author information available yet)
[This corrects the article DOI: 10.1371/journal.pcbi.1005513.].
September 2017: PLoS Computational Biology
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