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https://www.readbyqxmd.com/read/28440997/-neisseria-meningitidis-a-clinical-case-with-multi-organ-affection
#1
Alejandro Medina-Reyes, Beatriz Díaz-Polanco, Diego Sandoval-Chávez, Manuel Nodal-Hernández, Juan R Ayala-Franco
Neisseria meningitidis (Nm) is an agent feared for decades in the medical field due to its important morbidity and mortality. Ironically between 10 and 15% of the population will be asymptomatic carriers of this germ, which will also be ready to activate and manifest itself as a sickness at the right moment. We present the case of a nine-year-old girl who arrived at the Pediatric Emergency Service (to the Hospital General Region number 35, in Ciudad Juárez, Chihuahua) with the disease in multiple organs, where the Nm was isolated in the cerebrospinal fluid and in skin injuries, displaying three serotypes of Nm...
May 2017: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/28440762/consensus-statement-for-use-and-technical-requirements-of-thyroid-ultrasound-in-endocrinology-units
#2
Tomás Martín-Hernández, Juan José Díez Gómez, Gonzalo Díaz-Soto, Alberto Torres Cuadro, Elena Navarro González, Amelia Oleaga Alday, Marcel Sambo Salas, Jordi L Reverter Calatayud, Iñaki Argüelles Jiménez, Isabel Mancha Doblas, Diego Fernández García, Juan Carlos Galofré
Thyroid nodule detection has increased with widespread use of ultrasound, which is currently the main tool for detection, monitoring, diagnosis and, in some instances, treatment of thyroid nodules. Knowledge of ultrasound and adequate instruction on its use require a position statement by the scientific societies concerned. The working groups on thyroid cancer and ultrasound techniques of the Spanish Society of Endocrinology and Nutrition have promoted this document, based on a thorough analysis of the current literature, the results of multicenter studies and expert consensus, in order to set the requirements for the best use of ultrasound in clinical practice...
March 2017: Endocrinol Diabetes Nutr
https://www.readbyqxmd.com/read/28440094/small-group-activities-within-academic-communities-improve-the-connectedness-of-students-and-faculty
#3
Katharina Brandl, Stephen D Schneid, Sunny Smith, Babbi Winegarden, Jess Mandel, Carolyn J Kelly
BACKGROUND: The University of California, San Diego, School of Medicine implemented a curriculum change that included reduction of lectures, incorporation of problem-based learning and other small group activities. Six academic communities were introduced for teaching longitudinal curricular content and organizing extracurricular activities. METHODS: Surveys were collected from 904 first- and second-year medical students over 6 years. Student satisfaction data with their sense of connectedness and community support were collected before and after the implementation of the new curriculum...
April 25, 2017: Medical Teacher
https://www.readbyqxmd.com/read/28439458/the-genomic-sequence-of-exiguobacterium-chiriqhucha-str-n139-reveals-a-species-that-thrives-in-cold-waters-and-extreme-environmental-conditions
#4
Ana Gutiérrez-Preciado, Carlos Vargas-Chávez, Mariana Reyes-Prieto, Omar F Ordoñez, Diego Santos-García, Tania Rosas-Pérez, Jorge Valdivia-Anistro, Eria A Rebollar, Andrés Saralegui, Andrés Moya, Enrique Merino, María Eugenia Farías, Amparo Latorre, Valeria Souza
We report the genome sequence of Exiguobacterium chiriqhucha str. N139, isolated from a high-altitude Andean lake. Comparative genomic analyses of the Exiguobacterium genomes available suggest that our strain belongs to the same species as the previously reported E. pavilionensis str. RW-2 and Exiguobacterium str. GIC 31. We describe this species and propose the chiriqhucha name to group them. 'Chiri qhucha' in Quechua means 'cold lake', which is a common origin of these three cosmopolitan Exiguobacteria. The 2,952,588-bp E...
2017: PeerJ
https://www.readbyqxmd.com/read/28438969/intracellular-in-vivo-dynamics-of-thalamocortical-synapses-in-visual-cortex
#5
Madineh Sedigh-Sarvestani, Leif Vigeland, Ivan Fernandez-Lamo, Morgan Taylor, Larry A Palmer, Diego Contreras
Seminal studies of the thalamocortical (TC) circuit in the visual system of the cat have been central to our understanding of sensory encoding. However, TC synaptic properties remain poorly understood. We used paired recordings, in the lateral geniculate nucleus (LGN) and primary visual cortex (V1), to provide the first in vivo characterization of sensory-driven TC potentials in V1. The amplitudes of EPSPs we characterized were smaller than those previously reported in vitro. Consistent with prior findings, connected LGN-V1 pairs were only found when their receptive fields (RFs) overlapped, and the probability of connection increased steeply with degree of RF overlap and response similarity...
April 24, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28438365/protein-conformational-dynamics-studied-by-15-n-and-1-h-r1%C3%AF-relaxation-dispersion-application-to-wild-type-and-g53a-ubiquitin-crystals
#6
Diego F Gauto, Audrey Hessel, Petra Rovó, Vilius Kurauskas, Rasmus Linser, Paul Schanda
Solid-state NMR spectroscopy can provide site-resolved information about protein dynamics over many time scales. Here we combine protein deuteration, fast magic-angle spinning (~45-60kHz) and proton detection to study dynamics of ubiquitin in microcrystals, and in particular a mutant in a region that undergoes microsecond motions in a β-turn region in the wild-type protein. We use (15)N R1ρ relaxation measurements as a function of the radio-frequency (RF) field strength, i.e. relaxation dispersion, to probe how the G53A mutation alters these dynamics...
April 14, 2017: Solid State Nuclear Magnetic Resonance
https://www.readbyqxmd.com/read/28438170/immunolocalization-of-steroidogenic-enzymes-in-the-vaginal-mucous-of-galea-spixii-during-the-estrous-cycle
#7
Amilton Cesar Dos Santos, Alan James Conley, Moacir Franco de Oliveira, Gleidson Benevides Oliveira, Diego Carvalho Viana, Antônio Chaves de Assis Neto
BACKGROUND: The synthesis of sex steroids is controlled by several enzymes such as17α-hydroxylase cytochrome P450 (P450c17) catalyzing androgen synthesis and aromatase cytochrome P450 (P450arom) catalyzing estrogen synthesis, both of which must complex with the redox partner NADPH-cytochrome P450 oxidoreductase (CPR) for activity. Previous studies have identified expression of steroidogenic enzymes in vaginal tissue, suggesting local sex steroid synthesis. The current studies investigate P450c17, P450aromatase and CPR expression in vaginal mucosa of Galea spixii (Spix cavy) by immuno-histochemical and western immunoblot analyses...
April 24, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28438099/a-single-centre-review-of-suspected-sudden-infant-death-cases
#8
Janos Bokor, Krisztina Danics, Eszter Bencze, Eva Keller, Zoltan Szollosi
This study aimed to establish the number of deaths in infants under 1 year of age that were being reported for medico-legal examination at a single large academic centre in Hungary, as well as the method of these investigations with special emphasis on histopathology, ancillary techniques and the adherence of our current practice to international recommendations. A single-centre, retrospective audit was conducted on all suspected sudden infant death cases. After the review there were eight infectious background sudden infant death syndrome (SIDS) cases, infectious respiratory tract disease in 14 cases, cardiac septal tumour in one case, and hepatic, possibly metabolic, disorder in one case...
April 2017: Medicine, Science, and the Law
https://www.readbyqxmd.com/read/28437501/pronator-teres-myotendinous-tear
#9
Usama Qayyum, Diego Villacis, Charles M Jobin
Pronator teres muscle strain is a rare sporting injury reported thus far only in cricket and golf players. The injury appears to occur when the sporting club or racket strikes the ground during a forceful swing and causes the elbow to experience an eccentric force during resisted elbow flexion and pronation. On initial presentation, this injury can be mistaken for injury to the medial ulnar collateral ligament, or exacerbation of medial epicondylitis. On examination, bruising and tenderness distal to the elbow over the course of the pronator teres are often present...
March 2017: American Journal of Orthopedics
https://www.readbyqxmd.com/read/28437245/long-term-outcome-of-a-spontaneous-coronary-artery-dissection-treated-with-a-bioresorbable-scaffold
#10
Nieves Gonzalo, Fernando Macaya, José J Gómez de Diego, Javier Escaned
No abstract text is available yet for this article.
April 25, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28436608/a-fukui-function-guided-genetic-algorithm-assessment-on-structural-prediction-of-sin-n%C3%A2-%C3%A2-12-20-clusters
#11
Osvaldo Yañez, Alejandro Vásquez-Espinal, Diego Inostroza, Lina Ruiz, Ricardo Pino-Rios, William Tiznado
Theoretical studies are essential for the structural characterization of clusters, when it comes to rationalize their unique size-dependent properties and composition. However, the rapid growth of local minima on the potential energy surface (PES), with respect to cluster size, makes the candidate identification a challenging undertaking. In this article, we introduce a hybrid strategy to explore the PES of clusters. This proposal involves the use of a biased initial population of a genetic algorithm procedure...
April 24, 2017: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/28436202/a-common-genetic-variant-in-foxp2-is-associated-with-language-based-learning-dis-abilities-evidence-from-two-italian-independent-samples
#12
Alessandra Mozzi, Valentina Riva, Diego Forni, Manuela Sironi, Cecilia Marino, Massimo Molteni, Stefania Riva, Franca R Guerini, Mario Clerici, Rachele Cagliani, Sara Mascheretti
Language-based Learning Disabilities (LLDs) encompass a group of complex, comorbid, and developmentally associated deficits in communication. Language impairment and developmental dyslexia (DD) represent the most recognized forms of LLDs. Substantial genetic correlations exist between language and reading (dis)abilities. Common variants in the FOXP2 gene were consistently associated with language- and reading-related neuropsychological and neuroanatomical phenotypes. We tested the effect of a FOXP2 common variant, that is, rs6980093 (A/G), on quantitative measures of language and reading in two independent Italian samples: a population-based cohort of 699 subjects (3-11 years old) and a sample of 572 children with DD (6-18 years old)...
April 24, 2017: American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics
https://www.readbyqxmd.com/read/28436079/-l-2-c2-p2-dicarbondiphosphide-stabilized-by-n-heterocyclic-carbenes-or-cyclic-diamido-carbenes
#13
Zhongshu Li, Xiaodan Chen, Diego M Andrada, Gernot Frenking, Zoltán Benkö, Yaqi Li, Jeffrey R Harmer, Cheng-Yong Su, Hansjörg Grützmacher
Carbon phosphides, Cn Pm , may have highly promising electronic, optical, and mechanical properties, but they are experimentally almost unexplored materials. Phosphaheteroallenes stabilized by N-heterocyclic carbenes undergo a one-electron reduction to yield compounds of the type (L)2 C2 P2 with diverse structures. The use of imidazolylidenes as ligands L give complexes with a central four-membered ring C2 P2 , while more electrophilic cyclic diamidocarbenes (DAC) give a compound with an acyclic π-conjugated CP-PC unit...
April 24, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28435003/the-hemodynamic-effects-of-aortic-insufficiency-in-patients-supported-with-continuous-flow-left-ventricular-assist-devices
#14
Gabriel Sayer, Nitasha Sarswat, Gene H Kim, Sirtaz Adatya, Diego Medvedofsky, Daniel Rodgers, Eric Kruse, Takeyoshi Ota, Valluvan Jeevanandam, Roberto Lang, Nir Uriel
BACKGROUND: The impact of aortic insufficiency (AI) on the morbidity and mortality of left ventricular assist device (LVAD) patients remains controversial. This study's aim is to assess the hemodynamics of LVAD patients with at least mild AI, at baseline and in response to device speed changes. METHODS: Asymptomatic LVAD patients were prospectively enrolled and underwent a hemodynamic and echocardiographic ramp study. Hemodynamics at rest and in response to device speed changes were compared between patients with at least mild AI at their baseline speed and patients without AI...
April 20, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28434745/hot-topic-16s-rrna-gene-sequencing-reveals-the-microbiome-of-the-virgin-and-pregnant-bovine-uterus
#15
S G Moore, A C Ericsson, S E Poock, P Melendez, M C Lucy
We tested the hypothesis that the uterus of virgin heifers and pregnant cows possessed a resident microbiome by 16S rRNA gene sequencing of the virgin and pregnant bovine uterus. The endometrium of 10 virgin heifers in estrus and the amniotic fluid, placentome, intercotyledonary placenta, cervical lumen, and external cervix surface (control) of 5 pregnant cows were sampled using aseptic techniques. The DNA was extracted, the V4 hypervariable region of the 16S rRNA gene was amplified, and amplicons were sequenced using Illumina MiSeq technology (Illumina Inc...
April 20, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28434677/the-microbiome-of-the-prostate-tumor-microenvironment
#16
Ilaria Cavarretta, Roberto Ferrarese, Walter Cazzaniga, Diego Saita, Roberta Lucianò, Elisa R Ceresola, Irene Locatelli, Laura Visconti, Giovanni Lavorgna, Alberto Briganti, Manuela Nebuloni, Claudio Doglioni, Massimo Clementi, Francesco Montorsi, Filippo Canducci, Andrea Salonia
BACKGROUND: The advent of molecular-based methods of identification and characterization of complex microbial populations has led to a new era of microbial discovery. A detailed and comprehensive analysis of the microbial ecosystem of the pathologic and healthy prostate tissues has not been yet reported. OBJECTIVES: To characterize the microbiome possibly associated to the pathologic prostate microenvironment. DESIGN, SETTING, AND PARTICIPANTS: The microbiome profile of tumor, peri-tumor, and nontumor tissues was assessed on 16 radical prostatectomy-specimens...
April 20, 2017: European Urology
https://www.readbyqxmd.com/read/28434328/transthyretin-related-hereditary-amyloidosis-in-an-argentinian-family-with-ttr-tyr114cys-mutation
#17
María Adela Aguirre, Elsa Mercedes Nucifora, Marcelo Rugiero, Patricia Sorroche, María Soledad Saez, Diego Hernán Giunta, María Lourdes Posadas-Martinez, Bruno Rafael Boietti
No abstract text is available yet for this article.
March 2017: Amyloid: the International Journal of Experimental and Clinical Investigation
https://www.readbyqxmd.com/read/28433148/mechanics-and-transport-phenomena-in-agarose-based-hydrogels-studied-by-compression-relaxation-tests
#18
Diego Caccavo, Sara Cascone, Serena Poto, Gaetano Lamberti, Anna Angela Barba
Hydrogels are widespread materials, used in several frontier fields, due to their peculiar behavior: they couple solvent mass transport to system mechanics, exhibiting viscoelastic and poroelastic characteristics. The full understanding of this behavior is crucial to correctly design such complex systems. In this study agarose gels has been investigated through experimental stress-relaxation tests and with the aid of a 3D poroviscoelastic model. At the investigated experimental conditions, the agarose gels samples show a prevalent viscoelastic behavior, revealing limited water transport and an increase of the stiffness as well as of the relaxation time along with the polymer concentration...
July 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28432836/autoimmune-hepatitis-from-current-knowledge-and-clinical-practice-to-future-research-agenda
#19
REVIEW
Marcial Sebode, Johannes Hartl, Diego Vergani, Ansgar W Lohse
Autoimmune hepatitis (AIH) is a chronic inflammatory liver disease. Unknown triggers lead to a mainly T cell-mediated immune response targeting the liver, the main auto-antigen of which has not been identified yet. The diagnosis of AIH is based on the elevation of immunoglobulin G / hypergammaglobulinemia, detection of characteristic autoantibodies as well as a typical pattern on liver histology. Exclusion of other causes of hepatitis and response to immunosuppressive treatment support the diagnosis of AIH...
April 22, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28432796/an-acetone-based-phantom-for-quantitative-diffusion-mri
#20
Xiaoke Wang, Scott B Reeder, Diego Hernando
PURPOSE: To propose and evaluate an acetone-D2 O phantom that has an extended range of apparent diffusion coefficient (ADC) for quantitative diffusion magnetic resonance imaging (MRI), as well as to compare its properties to previously described water-based phantoms. MATERIALS AND METHODS: The proposed acetone-D2 O, and previously described sucrose water solution and polyvinylpyrrolidone (PVP) water solution phantoms, were constructed in a number of concentrations between 0% and 50%...
April 22, 2017: Journal of Magnetic Resonance Imaging: JMRI
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