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https://www.readbyqxmd.com/read/29353399/mri-findings-in-glutamic-acid-decarboxylase-associated-autoimmune-epilepsy
#1
Jason R Fredriksen, Carrie M Carr, Kelly K Koeller, Jared T Verdoorn, Avi Gadoth, Sean J Pittock, Amy L Kotsenas
PURPOSE: Glutamic acid decarboxylase (GAD65) has been implicated in a number of autoimmune-associated neurologic syndromes, including autoimmune epilepsy. This study categorizes the spectrum of MRI findings in patients with a clinical diagnosis of autoimmune epilepsy and elevated serum GAD65 autoantibodies. METHODS: An institutional database search identified patients with elevated serum GAD65 antibodies and a clinical diagnosis of autoimmune epilepsy who had undergone brain MRI...
January 20, 2018: Neuroradiology
https://www.readbyqxmd.com/read/29353280/microstructure-of-strategic-white-matter-tracts-and-cognition-in-memory-clinic-patients-with-vascular-brain-injury
#2
J Matthijs Biesbroek, Alexander Leemans, Hanna den Bakker, Marco Duering, Benno Gesierich, Huiberdina L Koek, Esther van den Berg, Albert Postma, Geert Jan Biessels
BACKGROUND: White matter injury is an important factor for cognitive impairment in memory clinic patients. We determined the added value of diffusion tensor imaging (DTI) of strategic white matter tracts in explaining variance in cognition in memory clinic patients with vascular brain injury. METHODS: We included 159 patients. Conventional MRI markers (white matter hyperintensity volume, lacunes, nonlacunar infarcts, brain atrophy, and microbleeds), and fractional anisotropy and mean diffusivity (MD) of the whole brain white matter and of 18 white matter tracts were related to cognition using linear regression and Bayesian network analysis...
January 19, 2018: Dementia and Geriatric Cognitive Disorders
https://www.readbyqxmd.com/read/29353276/what-can-google-inform-us-about-people-s-interests-regarding-dental-caries-in-different-populations
#3
Patricia Estefania Aguirre, Melina Coelho, Thaís Oliveira, Daniela Rios, Agnes Fátima Cruvinel, Thiago Cruvinel
The diagnosis or suspicion of dental caries can lead people to seek additional information on the Internet through the use of structured queries in search engine tools. This action generates a considerable volume of data, which can be analyzed to provide a better understanding of the public's behavior linked to the consumption of oral health information. This study aimed to assess the volume and profile of web searches on dental caries-related queries performed by Google users from different countries. The monthly variation of the Search Volume Index (SVI) for dental caries was obtained in Google Trends for the period between January 2004 and September 2016...
January 20, 2018: Caries Research
https://www.readbyqxmd.com/read/29353261/impact-of-delivered-tidal-volume-on-the-occurrence-of-intraventricular-haemorrhage-in-preterm-infants-during-positive-pressure-ventilation-in-the-delivery-room
#4
Qaasim Mian, Po-Yin Cheung, Megan O'Reilly, Samantha K Barton, Graeme R Polglase, Georg M Schmölzer
BACKGROUND AND OBJECTIVES: Delivery of inadvertent high tidal volume (VT) during positive pressure ventilation (PPV) in the delivery room is common. High VT delivery during PPV has been associated with haemodynamic brain injury in animal models. We examined if VT delivery during PPV at birth is associated with brain injury in preterm infants <29 weeks' gestation. METHODS: A flow-sensor was placed between the mask and the ventilation device. VT values were compared with recently described reference ranges for VT in spontaneously breathing preterm infants at birth...
January 20, 2018: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/29353190/characterization-of-acrylamide-induced-oxidative-stress-and-cardiovascular-toxicity-in-zebrafish-embryos
#5
Mengmeng Huang, Jingjing Jiao, Jun Wang, Zhidan Xia, Yu Zhang
Acrylamide (AA) is a high production volume chemical in industrial applications and widely found in baked or fried carbohydrate-rich foods. In this study, we unravelled that AA induced developmental toxicity associated with oxidative stress status and disordered lipid distribution in heart region of developing zebrafish. Treatment with AA caused a deficient cardiovascular system with significant heart malformation and dysfunction. We also found that AA could reduce the number of cardiomyocytes through the reduced capacity of cardiomyocyte proliferation rather than cell apoptosis...
January 8, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29353118/magnesium-supplementation-pharmacokinetics-in-cardiac-surgery-patients-with-normal-renal-function
#6
Peter Biesenbach, Johan Mårtensson, Eduardo Osawa, Glenn Eastwood, Salvatore Cutuli, Jessica Fairley, George Matalanis, Rinaldo Bellomo
BACKGROUND: Intravenous magnesium is routinely administered in intensive care units (ICU) to treat arrhythmias after cardiothoracic surgery. There are no data on the pharmacokinetics of continuous magnesium infusion therapy. OBJECTIVE: To investigate the pharmacokinetics of continuous magnesium infusion, focusing on serum and urinary magnesium concentration, volume of distribution and half-life. METHODS: We administered a 10 mmol bolus of magnesium-sulfate followed by a continuous infusion of 3 mmol/h for 12 h in twenty cardiac surgery patients...
January 11, 2018: Journal of Critical Care
https://www.readbyqxmd.com/read/29353110/orchestration-of-chemomobilization-and-g-csf-administration-for-successful-hematopoietic-stem-cell-collection
#7
Katharina Kriegsmann, Anita Schmitt, Mark Kriegsmann, Thomas Bruckner, Adamma Anyanwu, Mathias Witzens-Harig, Carsten Müller-Tidow, Stefan Klein, Patrick Wuchter
Successful collection of peripheral blood stem cells (PBSCs) depends on the optimal orchestration of mobilization chemotherapy, granulocyte-colony-stimulating factor (G-CSF) application, and CD34+ cell number assessment in the peripheral blood (PB). However, determining the optimal timing in accordance to the applied chemomobilization regimen can be challenging. While most centers apply their own local timing schedules, a reliable timetable including the currently most often used mobilization regimens is lacking...
January 15, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29353072/development-of-subcortical-volumes-across-adolescence-in-males-and-females-a-multisample-study-of-longitudinal-changes
#8
Megan M Herting, Cory Johnson, Kathryn L Mills, Nandita Vijayakumar, Meg Dennison, Chang Liu, Anne-Lise Goddings, Ronald E Dahl, Elizabeth R Sowell, Sarah Whittle, Nicholas B Allen, Christian K Tamnes
The developmental patterns of subcortical brain volumes in males and females observed in previous studies have been inconsistent. To help resolve these discrepancies, we examined developmental trajectories using three independent longitudinal samples of participants in the age-span of 8-22 years (total 216 participants and 467 scans). These datasets, including Pittsburgh (PIT; University of Pittsburgh, USA), NeuroCognitive Development (NCD; University of Oslo, Norway), and Orygen Adolescent Development Study (OADS; The University of Melbourne, Australia), span three countries and were analyzed together and in parallel using mixed-effects modeling with both generalized additive models and general linear models...
January 15, 2018: NeuroImage
https://www.readbyqxmd.com/read/29353032/clinical-assessment-and-brain-findings-in-a-cohort-of-mothers-fetuses-and-infants-infected-with-zika-virus
#9
Magdalena Sanz Cortes, Ana Maria Rivera, Mayel Yepez, Carolina V Guimaraes, Israel Diaz Yunes, Alexander Zarutskie, Ivan Davila, Anil Shetty, Arun Mahadev, Saray Maria Serrano, Nicolas Castillo, Wesley Lee, Gregory Valentine, Michael Belfort, Guido Parra, Carrie Mohila, Kjersti Aagaard, Miguel Parra
BACKGROUND: Congenital Zika virus (ZIKV) infection can be detected in both the presence and absence of microcephaly, and manifests as a number of signs and symptoms detected clinically and by neuroimaging. However, to date, qualitative and quantitative measures for the purpose of diagnosis and prognosis are limited. OBJECTIVES: Main objectives of this study conducted on fetuses and infants with confirmed congenital ZIKV infection and detected brain abnormalities are: 1) To assess the prevalence of microcephaly and the frequency of the anomalies including a detailed description based on ultrasound and magnetic resonance imaging (MRI) in fetuses and ultrasound, MRI and computed tomography imaging postnatally; 2) To provide quantitative measures of fetal and infant brain findings by MRI using volumetric analyses and diffusion weighted imaging (DWI); 3) To obtain additional information from placental and fetal histopathological assessments and postnatal clinical evaluations...
January 15, 2018: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29353030/adherence-to-practice-guidelines-is-associated-with-reduced-referral-times-for-patients-with-ovarian-cancer
#10
Bernadette M Boac, Yin Xiong, Sachin M Apte, Robert M Wenham, Mian M Shahzad, Donald G Munroe, Johnathan M Lancaster, Hye Sook Chon
BACKGROUND: Patients with ovarian cancer tend to receive the highest quality of care at high-volume cancer centers with gynecologic oncologists. However, the care that they receive prior to gynecologic oncology consult has not been examined. We investigated the quantity and quality of care given to patients with ovarian cancer before being seen by a gynecologic oncologist. OBJECTIVES: We evaluated the variability, quantity, and quality of diagnostic testing and physician-referral patterns prior to consultation with a gynecologic oncologist, in women with suspicious pelvic masses seen on imaging...
January 15, 2018: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29352946/redox-enzyme-sensitive-chondroitin-sulfate-based-self-assembled-nanoparticles-loading-docetaxel-for-the-inhibition-of-metastasis-and-growth-of-melanoma
#11
Mengrui Liu, Hongliang Du, Abdur Rauf Khan, Jianbo Ji, Aihua Yu, Guangxi Zhai
In this report, redox/enzyme responsive chondroitin sulfate-ss-deoxycholic acid (CSCD) conjugates were synthesized using cystamine as the linkage which could self-assemble to form self-assembled nanoparticles (175.6 + 5.2 nm) in the aqueous environment. Docetaxel (DTX) was loaded in nanoparticles with desired loading efficiency for the inhibition of tumor growth and metastasis of melanoma. Interestingly, nanoparticles were demonstrated to respond to hyaluronidase-1 (Hyal-1) which could degrade chondroitin sulfate (CS) backbones...
March 15, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29352945/silylation-and-characterization-of-microcrystalline-cellulose-isolated-from-indonesian-native-oil-palm-empty-fruit-bunch
#12
Septi Pujiasih, Kurnia, Abu Masykur, Triana Kusumaningsih, Ozi Adi Saputra
Silylation of microcrystalline cellulose (MCC), isolated from Indonesian native oil palm empty fruit bunch (OPEFB), using aminosilane compound synthesized through aminolysis of 3-glycidoxypropyltrimethoxysilane (GPTMS) with ethylenediamine (EDA) has been conducted in this study. Generally, there are three steps performed to isolate MCC before silylation process, i.e. bleaching, alkaline treatment and acid hydrolysis. All products resulted from bleaching, alkaline and acid hydrolysis treatments were characterized using Fourier Transform Infrared (FTIR) spectroscopy...
March 15, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29352800/efficient-reactive-brownian-dynamics
#13
Aleksandar Donev, Chiao-Yu Yang, Changho Kim
We develop a Split Reactive Brownian Dynamics (SRBD) algorithm for particle simulations of reaction-diffusion systems based on the Doi or volume reactivity model, in which pairs of particles react with a specified Poisson rate if they are closer than a chosen reactive distance. In our Doi model, we ensure that the microscopic reaction rules for various association and dissociation reactions are consistent with detailed balance (time reversibility) at thermodynamic equilibrium. The SRBD algorithm uses Strang splitting in time to separate reaction and diffusion and solves both the diffusion-only and reaction-only subproblems exactly, even at high packing densities...
January 21, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29352799/an-atomistic-fingerprint-algorithm-for-learning-ab-initio-molecular-force-fields
#14
Yu-Hang Tang, Dongkun Zhang, George Em Karniadakis
Molecular fingerprints, i.e., feature vectors describing atomistic neighborhood configurations, is an important abstraction and a key ingredient for data-driven modeling of potential energy surface and interatomic force. In this paper, we present the density-encoded canonically aligned fingerprint algorithm, which is robust and efficient, for fitting per-atom scalar and vector quantities. The fingerprint is essentially a continuous density field formed through the superimposition of smoothing kernels centered on the atoms...
January 21, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29352794/a-reversible-transition-in-liquid-bi-under-pressure
#15
M Emuna, S Matityahu, E Yahel, G Makov, Y Greenberg
The electrical resistance of solid and liquid Bi has been measured at high pressures and temperatures using a novel experimental design for high sensitivity measurements utilizing a "Paris-Edinburgh" toroid large volume press. An anomalous sharp decrease in resistivity with increasing temperature at constant pressures was observed in the region beyond melting which implies a possible novel transition in the melt. The proposed transition was observed across a range of pressures both in heating and cooling cycles of the sample demonstrating its reversibility...
January 21, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29352793/theoretical-study-of-tetrahedral-site-occupation-by-hydrogen-in-pd-nanoparticles
#16
Takayoshi Ishimoto, Michihisa Koyama
To understand the enhanced effects and new hydrogen absorption properties of metal nanoparticles, we theoretically investigated the hydrogen absorption in Pd nanoparticles, adopting the Pd405 model of ca. 2.5 nm by using density functional theory. Pd405 showed inhomogeneous geometric features, especially near the surface region. The hydrogen absorptions in octahedral (O) and tetrahedral (T) sites near the core region were stable and unstable, respectively, similar to the Pd bulk. We clearly demonstrated the possibility of hydrogen absorption in T sites near the surface of Pd405...
January 21, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29352753/factors-predicting-length-of-stay-following-bariatric-surgery-retrospective-review-of-a-single-uk-tertiary-centre-experience
#17
Fahad Mahmood, Alistair J Sharples, Adriana Rotundo, Nagammapudur Balaji, Vittal S R Rao
BACKGROUND: Laparoscopic Roux Y gastric bypass (RYGB) and laparoscopic sleeve gastrectomy (LSG) are the most commonly performed bariatric procedures. Improvement in techniques and perioperative management of patients have resulted in shorter hospital stay and reduced overall costs. Many post-operative protocols aspire to post-operative day 1 discharge with studies showing reduction in length of stay without increasing complications. In this study, we investigate the factors predictive of early discharge at our high-volume bariatric centre...
January 19, 2018: Obesity Surgery
https://www.readbyqxmd.com/read/29352674/the-effect-of-vertical-split-flow-patient-management-on-emergency-department-throughput-and-efficiency
#18
John S Garrett, Colyn Berry, Hao Wong, Huanying Qin, Jeffery A Kline
BACKGROUND: To address emergency department overcrowding operational research seeks to identify efficient processes to optimize flow of patients through the emergency department. Vertical flow refers to the concept of utilizing and assigning patients virtual beds rather than to an actual physical space within the emergency department to care of low acuity patients. The aim of this study is to evaluate the impact of vertical flow upon emergency department efficiency and patient satisfaction...
January 11, 2018: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29352662/distinct-progression-patterns-of-brain-disease-in-infantile-and-juvenile-gangliosidoses-volumetric-quantitative-mri-study
#19
Igor Nestrasil, Alia Ahmed, Josephine M Utz, Kyle Rudser, Chester B Whitley, Jeanine R Jarnes-Utz
BACKGROUND: GM1-gangliosidosis and GM2-gangliosidosis (Tay-Sachs disease and Sandhoff disease) are unrelenting heritable neurodegenerative conditions of lysosomal ganglioside accumulation. Although progressive brain atrophy is characteristic, longitudinal quantification of specific brain structures has not been systematically studied. OBJECTIVES: The goal of this longitudinal study has been to quantify and track brain MRI volume changes, including specific structure volume changes, at different times in disease progression of childhood gangliosidoses, and to explore quantitative brain MRI volumetry (qMRI) as a non-invasive marker of disease progression for future treatment trials...
December 20, 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/29352651/catheter-injected-bone-marrow-mesenchymal-stem-cells-induce-efficacious-occlusion-of-arteriovenous-nidus-in-a-swine-model
#20
Joseph Touma, Jianping Dai, Andre Gaston, Marianne Gervais, Eric Allaire
OBJECTIVES: Arteriovenous malformations (AVMs) are complex vascular lesions. Surgical excision is the treatment of choice, but is often not achievable. Embolo-sclerotherapy alone is associated with high recurrence rates. This study tested the hypothesis that seeding hydrogel conditioned bone marrow derived mesenchymatous stem cells (BM-MSCs) in an AVM nidus model induces solid microvascular occlusion through endoluminal tissue growth. METHODS: AVMs were modelled as arteriovenous microvascular nidus, using swine rete mirabile, a plexiform intracranial structure composed of arterial microvessels that extensively anastomose...
January 15, 2018: European Journal of Vascular and Endovascular Surgery
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