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https://www.readbyqxmd.com/read/28538857/-hand-foot-and-mouth-disease-in-a-hospital-in-callao-in-2016
#1
Milton José Max Rodríguez-Zúñiga, Katherine Vértiz-Gárate, Florencio Cortéz-Franco, Eberth Qujiano-Gomero
Hand, foot, and mouth disease (HFMD) is an exanthematous viral disease caused mainly by Coxsackie A16 with a typical symptomatology of fever, papulovesicular rash on the hands, feet, and genitals, and an ulcerous enanthem in the mouth. In the summer of 2016, a variety of cases presented at a hospital in Callao in children and adults with a symptomatology consistent with HFMD. A clinical diagnosis was made, and support therapy was applied, resulting in the resolution of symptoms. In the last decade, reports have emerged in some countries of an atypical involvement caused by Coxsackie A6, producing lesions that are more widely distributed in adults...
January 2017: Revista Peruana de Medicina Experimental y Salud Pública
https://www.readbyqxmd.com/read/28538789/use-access-and-equity-in-health-care-services-in-s%C3%A3-o-paulo-brazil
#2
Camila Nascimento Monteiro, Mariëlle A Beenackers, Moisés Goldbaum, Marilisa Berti de Azevedo Barros, Reinaldo José Gianini, Chester Luiz Galvão Cesar, Johan P Mackenbach
The study analyzed how socioeconomic factors are associated with seeking, access, use, and quality of health care services in São Paulo, Brazil. Data were obtained from two household health surveys in São Paulo. We used logistic regression to analyze associations between socioeconomic factors and seeking, access, use, and quality of health care services. Access to health care services was high among those who sought it (94.91% in 2003 and 94.98% in 2008). The proportion of access to and use of health care services did not change significantly from 2003 to 2008...
May 18, 2017: Cadernos de Saúde Pública
https://www.readbyqxmd.com/read/28538735/ensemble-cryo-em-elucidates-the-mechanism-of-translation-fidelity
#3
Anna B Loveland, Gabriel Demo, Nikolaus Grigorieff, Andrei A Korostelev
Gene translation depends on accurate decoding of mRNA, the structural mechanism of which remains poorly understood. Ribosomes decode mRNA codons by selecting cognate aminoacyl-tRNAs delivered by elongation factor Tu (EF-Tu). Here we present high-resolution structural ensembles of ribosomes with cognate or near-cognate aminoacyl-tRNAs delivered by EF-Tu. Both cognate and near-cognate tRNA anticodons explore the aminoacyl-tRNA-binding site (A site) of an open 30S subunit, while inactive EF-Tu is separated from the 50S subunit...
May 24, 2017: Nature
https://www.readbyqxmd.com/read/28538729/cryo-em-structure-of-the-activated-glp-1-receptor-in-complex-with-a-g-protein
#4
Yan Zhang, Bingfa Sun, Dan Feng, Hongli Hu, Matthew Chu, Qianhui Qu, Jeffrey T Tarrasch, Shane Li, Tong Sun Kobilka, Brian K Kobilka, Georgios Skiniotis
Glucagon-like peptide 1 (GLP-1) is a hormone with essential roles in regulating insulin secretion, carbohydrate metabolism and appetite. GLP-1 effects are mediated through binding to the GLP-1 receptor (GLP-1R), a class B G-protein-coupled receptor (GPCR) that signals primarily through the stimulatory G protein Gs. Class B GPCRs are important therapeutic targets; however, our understanding of their mechanism of action is limited by the lack of structural information on activated and full-length receptors. Here we report the cryo-electron microscopy structure of the peptide-activated GLP-1R-Gs complex at near atomic resolution...
May 24, 2017: Nature
https://www.readbyqxmd.com/read/28538673/breast-cancer-exploring-the-facts-and-holistic-needs-during-and-beyond-treatment
#5
REVIEW
Zhi Xuan Ng, Mei Shan Ong, Tamilarasi Jegadeesan, Shuo Deng, Celestial T Yap
Breast cancer patients face challenges throughout the journey of diagnosis, treatment, post-treatment, and recovery. The breast cancer patient is exposed to a multidisciplinary team including doctors, nurses, therapists, counselors, and psychologists. While the team assembled together aims to address multiple facets in breast cancer care, the sub-specialized nature of individual professional practices may constrain the overview of patients' holistic needs and a comprehensive approach to cancer management. This paper aims to provide an overview of the holistic needs of breast cancer patients at each stage of their cancer journey, addressing their complex physical, psychological, and social needs...
May 24, 2017: Healthcare (Basel, Switzerland)
https://www.readbyqxmd.com/read/28538659/the-effects-of-dithiothreitol-on-dna
#6
Søren Fjelstrup, Marie Bech Andersen, Jonas Thomsen, Jing Wang, Magnus Stougaard, Finn Skou Pedersen, Yi-Ping Ho, Marianne Smedegaard Hede, Birgitta Ruth Knudsen
With the novel possibilities for detecting molecules of interest with extreme sensitivity also comes the risk of encountering hitherto negligible sources of error. In life science, such sources of error might be the broad variety of additives such as dithiothreitol (DTT) used to preserve enzyme stability during in vitro reactions. Using two different assays that can sense strand interruptions in double stranded DNA, we here show that DTT is able to introduce nicks in the DNA backbone. DTT was furthermore shown to facilitate the immobilization of fluorescent DNA on an NHS-ester functionalized glass surface...
May 24, 2017: Sensors
https://www.readbyqxmd.com/read/28538608/assessing-dehydration-employing-end-tidal-carbon-dioxide-in-children-with-vomiting-and-diarrhea
#7
Stephen B Freedman, David W Johnson, Alberto Nettel-Aguirre, Angelo Mikrogianakis, Sarah Williamson-Urquhart, Nicholas Monfries, Adam Cheng
OBJECTIVE: Serum bicarbonate reflects dehydration severity in children with gastroenteritis. Previous work in children receiving intravenous rehydration has correlated end-tidal carbon dioxide (EtCO2) with serum bicarbonate. We evaluated whether EtCO2 predicts weight change in children with vomiting and/or diarrhea. METHODS: A prospective cohort study was conducted. Eligible children were 3 months to 10 years old and presented for emergency department (ED) care because of vomiting and/or diarrhea...
May 23, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28538577/in-depth-review-of-symptoms-triggers-and-treatment-of-occipital-migraine-headaches-site-iv
#8
Mona Ascha, David E Kurlander, Abdus Sattar, James Gatherwright, Bahman Guyuron
BACKGROUND: This study reports the surgical technique and efficacy of deactivation of occipital-triggered migraine headaches. In addition, it reports the effect of surgical deactivation of occipital-triggered migraine headaches on migraine triggers and associated symptoms other than pain. METHODS: One hundred ninety-five patients undergoing surgery for occipital-triggered migraine headaches performed by a single surgeon, and followed for at least 1 year, were analyzed...
June 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28538402/dissection-extending-from-extra-to-intracranial-arteries-a-case-report-of-progressive-ischemic-stroke
#9
Fu-Liang Zhang, Zhen-Ni Guo, Yang Liu, Yun Luo, Yi Yang
RATIONALE: Cervicocephalic artery dissections, once considered a rare disease, have become increasingly recognized as a cause of stroke in young and middle-aged individuals. Early diagnosis is mandatory because anticoagulation or antithrombotic therapy can help prevent primary or secondary ischemic events. However, the diagnosis is still a crucial challenge for radiologists and neurologists. PATIENT CONCERNS: We reported a rare case of 33-year-old patient with progressive ischemic stroke due to dissection from an intimal tear in the right proximal internal carotid artery to distal middle cerebral artery...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28538339/seven-tesla-mri-of-hippocampal-sclerosis-an-in-vivo-feasibility-study-with-histological-correlations
#10
Harald Stefanits, Elisabeth Springer, Ekaterina Pataraia, Christoph Baumgartner, Johannes A Hainfellner, Daniela Prayer, Christian Weisstanner, Thomas Czech, Siegfried Trattnig
INTRODUCTION: Temporal lobe epilepsy (TLE) is the most frequent form of focal epilepsy in adults. Because approximately half of these patients develop drug resistance, epilepsy surgery designed to remove the epileptogenic zone is an excellent option in selected patients. Histopathological analyses of hippocampal specimens in TLE patients revealed 4 types of Ammon's horn sclerosis, which are correlated with long-term epileptological outcome. The aim of this study was the correlation of noninvasive, high-resolution, morphological magnetic resonance imaging (MRI) at an ultra-high-field (7 T) of the hippocampus in TLE patients with histopathological findings...
May 23, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28538263/better-prognosis-for-eyes-with-preserved-foveal-depression-after-intravitreal-ranibizumab-injection-for-macular-edema-secondary-to-central-retinal-vein-occlusion
#11
Shuta Kitagawa, Shunsuke Yasuda, Yasuki Ito, Shinji Ueno, Takeshi Iwase, Hiroko Terasaki
PURPOSE: To determine the prognosis of eyes with central retinal vein occlusion that had a preserved foveal depression at the baseline and were treated by intravitreal ranibizumab injections (IRIs). METHODS: The authors reviewed the medical records of 23 eyes of 23 consecutive treatment-naive patients who received IRIs to treat the macular edema due to central retinal vein occlusion. Eyes were classified by the pre-IRI presence or absence of a foveal depression...
May 18, 2017: Retina
https://www.readbyqxmd.com/read/28538202/development-of-nanobiocatalysts-through-the-immobilization-of-pseudomonas-fluorescens-lipase-for-applications-in-efficient-kinetic-resolution-of-racemic-compounds
#12
Bharat P Dwivedee, Jayeeta Bhaumik, Shushil K Rai, Joydev K Laha, Uttam C Banerjee
The present work reports covalent immobilization of Pseudomonas fluorescens lipase (PFL) on functionalized multiwalled carbon nanotubes (MWCNTs) as a nanobiocatalyst (NBC). This nanobiocatalyst facilitates efficient kinetic resolution of (RS)-1-phenylethanol into (S)-1-phenylethanol [C=49.7%, eep=99.5%, ees=98.1% and E value=191.4]. The immobilized preparation (MWCNTs-PFL) showed ten-fold increase in activity, thermal stability upto 80 °C and recyclability (8 cycles). MWCNTs-PFL nanobioconjugate demonstrated better stability and enhanced activity compared to covalently immobilized PFL on other matrices (silver nanoparticles, gold nanoparticles and chitosan beads) used for the study...
May 11, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28538177/chemokine-signaling-and-the-regulation-of-bidirectional-leukocyte-migration-in-interstitial-tissues
#13
Davalyn Powell, Sebastien Tauzin, Laurel E Hind, Qing Deng, David J Beebe, Anna Huttenlocher
Motile cells navigate through complex tissue environments that include both attractive and repulsive cues. In response to tissue wounding, neutrophils, primary cells of the innate immune response, exhibit bidirectional migration that is orchestrated by chemokines and their receptors. Although progress has been made in identifying signals that mediate the recruitment phase, the mechanisms that regulate neutrophil reverse migration remain largely unknown. Here, we visualize bidirectional neutrophil migration to sterile wounds in zebrafish larvae and identify specific roles for the chemokine receptors Cxcr1 and Cxcr2 in neutrophil recruitment to sterile injury and infection...
May 23, 2017: Cell Reports
https://www.readbyqxmd.com/read/28538157/cell-and-tissue-scale-forces-coregulate-fgfr2-dependent-tetrads-and-rosettes-in-the-mouse-embryo
#14
Jun Wen, Hirotaka Tao, Kimberly Lau, Haijiao Liu, Craig A Simmons, Yu Sun, Sevan Hopyan
What motivates animal cells to intercalate is a longstanding question that is fundamental to morphogenesis. A basic mode of cell rearrangement involves dynamic multicellular structures called tetrads and rosettes. The contribution of cell-intrinsic and tissue-scale forces to the formation and resolution of these structures remains unclear, especially in vertebrates. Here, we show that Fgfr2 regulates both the formation and resolution of tetrads and rosettes in the mouse embryo, possibly in part by spatially restricting atypical protein kinase C, a negative regulator of non-muscle myosin IIB...
May 23, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28538154/effect-of-ca-2-to-sphingomyelin-investigated-by-sum-frequency-generation-vibrational-spectroscopy
#15
Rong-Juan Feng, Lu Lin, Yi-Yi Li, Ming-Hua Liu, Yuan Guo, Zhen Zhang
The interactions between Ca(2+) ions and sphingomyelin play crucial roles in a wide range of cellular activities. However, little is known about the molecular details of the interactions at interfaces. In this work, we investigated the interactions between Ca(2+) ions and egg sphingomyelin (ESM) Langmuir monolayers at the air/water interface by subwavenumber high-resolution broadband sum frequency generation vibrational spectroscopy (HR-BB-SFG-VS). We show that Ca(2+) ions can induce ordering of the acyl chains in the ESM monolayer...
May 23, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28538143/openrbc-a-fast-simulator-of-red-blood-cells-at%C3%A2-protein-resolution
#16
Yu-Hang Tang, Lu Lu, He Li, Constantinos Evangelinos, Leopold Grinberg, Vipin Sachdeva, George Em Karniadakis
We present OpenRBC, a coarse-grained molecular dynamics code, which is capable of performing an unprecedented in silico experiment-simulating an entire mammal red blood cell lipid bilayer and cytoskeleton as modeled by multiple millions of mesoscopic particles-using a single shared memory commodity workstation. To achieve this, we invented an adaptive spatial-searching algorithm to accelerate the computation of short-range pairwise interactions in an extremely sparse three-dimensional space. The algorithm is based on a Voronoi partitioning of the point cloud of coarse-grained particles, and is continuously updated over the course of the simulation...
May 23, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28538095/high-resolution-structures-of-the-amyloid-%C3%AE-1-42-dimers-from-the-comparison-of-four-atomistic-force-fields
#17
Viet Hoang Man, Phuong Hoang Nguyen, Philippe Derreumaux
The dimer of the amyloid-beta peptide Aβ of 42 residues is the smallest toxic species in Alzheimer's disease, but its equilibrium structures are unknown. Here we determined the equilibrium ensembles generated by the four atomistic OPLS-AA, CHARMM22*, AMBER99sb-ildn and AMBERsb14 force fields with the TIP3P water model. Based on 144 microsecond replica exchange molecular dynamics simulations (with 750 ns per replica), we find that the four force fields lead to random coil ensembles with calculated cross-collision sections, hydrodynamics properties and small-angle X-ray scattering profiles independent on the force field...
May 24, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28537862/erythrasma-a-report-of-nine-men-successfully-managed-with-mupirocin-2-ointment-monotherapy
#18
Tanya Greywal, Philip R Cohen
BACKGROUND: Erythrasma is a benign dermatosis that typically occurs on intertriginous skin. PURPOSE: We describe a series of nine men with erythrasma that were successfully treated with mupirocin 2% ointment monotherapy. METHODS AND MATERIALS: We reviewed PubMed for the following terms: erythrasma, mupirocin, ointment, treatment. We also reviewed papers containing these terms and their references. RESULTS: Complete resolution of erythrasma occurred following monotherapy with twice daily application of mupirocin 2% ointment...
May 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28537751/using-neutron-reflectometry-to-characterize-antimicrobial-protein-surface-coatings
#19
Peter W Akers, Andrew J Dingley, Simon Swift, Andrew R J Nelson, Julie Martin, Duncan James McGillivray
Understanding the interaction of adsorbed or covalently immobilized proteins with solid substrates at the molecular level guides the successful design of functionalized surfaces used in biomedical applications. In this report, neutron reflectometry (NR) was used to characterize the structure of surface-attached antimicrobial protein films, with antimicrobial activity assessed using an adaption of the Japanese Industrial Standard Test JIS Z 2801. NR allowed parameters influencing bioactivity to be measured at nanometer resolution and for conclusions about structural characteristics relating to bioactivity to be drawn...
May 24, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28537735/improved-superresolution-imaging-using-telegraph-noise-in-organic-semiconductor-nanoparticles
#20
Yifei Jiang, Muskendol Novoa, Teeranan Nongnual, Rhonda Powell, Terri F Bruce, Jason D McNeill
Small semiconductor structures often exhibit "telegraph noise". If the number of charge carriers is small, then spontaneous changes in the number of carriers can lead to abrupt switching between two or more discrete levels, leading to burst noise or popcorn noise in transistors. We have observed similar behavior in the fluorescence of organic semiconductor nanoparticles, where typical carrier populations are often less than ~10 carriers per nanoparticle. Spontaneous changes in the number of charges results in abrupt switching between 2 or more fluorescence intensity levels, since the charges act as highly efficient fluorescence quenchers...
May 24, 2017: Nano Letters
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