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Thiébaud Picart, Timothée Jacquesson, Emmanuel Jouanneau, Moncef Berhouma
BACKGROUND: Traumatic spinal subarachnoid hematoma, associated or not with a concurrent subdural hematoma, has rarely been described. The evolution of such hematomas is heterogeneous. This study aims at defining the most accurate management, which is currently not standardized. CASE DESCRIPTION: A 20-year-old man, victim of a high-kinetic road accident 5 days before and with several nonneurologic nonsurgical vertebral fractures, experienced a sudden dorsolumbar pain radiating to his lower limbs...
May 2018: World Neurosurgery
Caroline Lang, Sandrine Quenan
Sweet's syndrome is a rare neutrophilic dermatosis. Typically, patients present with a sudden onset of tender erythematous skin lesions (papules, nodules, and plaques), of asymetrical distribution, located preferentially on the superior limbs, face and neck, associated whith high fever and neutrophilia. Histologicaly, there is a diffuse infiltrate of neutrophils located in the dermis. Most of the time idiopathic, it may be associated with a respiratory or gastro-intestinal infection, with inflammatory bowel disease, pregnancy and vaccination...
March 29, 2017: Revue Médicale Suisse
Muhammet Hulusi Satılmışoğlu, Vesile Örnek Diker, Ömer Taşbulak, Mustafa Diker, Ali Birand, Mehmet Kaya, Taner İyigün, Abdurrahman Eksik
BACKGROUND: Asymmetric dimethylarginine (ADMA) is an endogenous inhibitor of nitric oxide synthase. AIM: We aimed to determine plasma ADMA levels in patients with ascending aorta dilatation in comparison to those without aorta dilatation, and to evaluate the diagnostic, predictive, and prognostic value of serum ADMA level for aorta dilatation. METHODS: This was a cross-sectional case-control study. A total of 104 consecutive patients (female/male, 35/69; mean age, 62...
2017: Kardiologia Polska
Juan Rull, Eduardo Tadeo, Rodrigo Lasa, Christian L Rodríguez, Alma Altuzar-Molina, Martín Aluja
Among tephritid fruit flies, hybridzation has been found to produce local adaptation and speciation, and in the case of pest species, induce behavioral and ecological alterations that can adversely impact efficient pest management. The fraterculus species group within Anastrepha (Diptera: Tephritidae), is a rapidly radiating aggregate, which includes cryptic species complexes, numerous sister species, and several pest species. Molecular studies have highlighted the possibility of introgression between A. fraterculus and A...
June 6, 2017: Insect Science
Emilien Nicolas, Cédric A Oger, Nathan Nguyen, Michaël Lambin, Amandine Draime, Sébastien C Leterme, Michael Chandler, Bernard F J Hallet
The Tn3 family is a widespread group of replicative transposons that are notorious for their contribution to the dissemination of antibiotic resistance and the emergence of multiresistant pathogens worldwide. The TnpA transposase of these elements catalyzes DNA breakage and rejoining reactions required for transposition. It also is responsible for target immunity, a phenomenon that prevents multiple insertions of the transposon into the same genomic region. However, the molecular mechanisms whereby TnpA acts in both processes remain unknown...
January 31, 2017: Proceedings of the National Academy of Sciences of the United States of America
G Rigaux, C V Gheran, M Callewaert, C Cadiou, S N Voicu, A Dinischiotu, M C Andry, L Vander Elst, S Laurent, R N Muller, A Berquand, M Molinari, S Huclier-Markai, F Chuburu
Chitosan CS-tripolyphosphate TPP/hyaluronic acid HA nanohydrogels loaded with gadolinium chelates (GdDOTA ⊂ CS-TPP/HA NGs) synthesized by ionic gelation were designed for lymph node (LN) MRI. In order to be efficiently drained to LNs, nanogels (NGs) needed to exhibit a diameter ϕ < 100 nm. For that, formulation parameters were tuned, using (i) CS of two different molecular weights (51 and 37 kDa) and (ii) variable CS/TPP ratio (2 < CS/TPP < 8). Characterization of NG size distribution by dynamic light scattering (DLS) and asymetrical flow-field-flow-fractionation (AF4) showed discrepancies since DLS diameters were consistently above 200 nm while AF4 showed individual nano-objects with ϕ < 100 nm...
February 3, 2017: Nanotechnology
Takayuki Nakayama, Qiu-Mei Zhang-Akiyama
The membranes of single-cell organisms are crucial as the first line of defense. The outer membrane of Gram-negative bacteria is an asymmetric bilayer in which lipopolysaccharides (LPSs) and phospholipids are localized in the outer and inner leaflet, respectively. This asymmetry is important for membrane integrity. In Escherichia coli, the Mla transport pathway maintains this asymmetry by removing phospholipids from the outer leaflet. The MlaD component of this system is a mammalian cell entry (MCE) domain protein, and E...
January 1, 2017: Journal of Bacteriology
Cyril Burin-des-Roziers, Pierre-Raphael Rothschild, Valérie Layet, Jian-Min Chen, Tiffany Ghiotti, Céline Leroux, Frans P M Cremers, Antoine P Brézin, Sophie Valleix
Wagner disease is a rare nonsyndromic autosomal-dominant vitreoretinopathy, associated with splice mutations specifically targeting VCAN exon 8. We report the extensive genetic analysis of two Wagner probands, previously found negative for disease-associated splice mutations. Next-generation sequencing (NGS), quantitative real-time PCR, and long-range PCR identified two deletions (3.4 and 10.5 kb) removing at least one exon-intron boundary of exon 8, and both correlating with an imbalance of VCAN mRNA isoforms...
January 2017: Human Mutation
Ahmad Manasrah, Nathan Crane, Rasim Guldiken, Kyle B Reed
Temperature perception is a highly nonlinear phenomenon with faster rates of change being perceived at much lower thresholds than slower rates. This paper presents a method that takes advantage of this nonlinear characteristic to generate a perception of continuous cooling even though the average temperature is not changing. The method uses multiple thermal actuators so that a few are cooling quickly while the rest of the actuators are heating slowly. The slowly-heating actuators are below the perceptual threshold temperature change and hence are not perceived, while the quickly-cooling actuators are above the perceptual temperature change, hence are perceived...
January 2017: IEEE Transactions on Haptics
Chung Whan Lee, Seo-Jung Han, Scott C Virgil, Brian M Stoltz
An improved method for the asymetric alkylation of 3-bromooxindoles with α-arylated malonate esters is described. The asymmetric alkylation demonstrated was achieved up to 70% ee utilizing a copper(II) bis(phosphine) complex.
June 3, 2015: Tetrahedron
Rania Djemal, Habib Khoudi
Over the last decade, APETALA2/Ethylene Responsive Factor (AP2/ERF) proteins have become the subject of intensive research activity due to their involvement in a variety of biological processes. This research led to the identification of AP2/ERF genes in many species; however, little is known about these genes in durum wheat, one of the most important cereal crops in the world. In this study, a new member of the AP2/ERF transcription factor family, designated TdSHN1, was isolated from durum wheat using thermal asymetric interlaced PCR (TAIL-PCR) method...
November 2015: Protoplasma
Michael R Rowland, Neli P Ragina, Joy Sarkar, Catherine F T Uyehara, Anthony J Senagore
BACKGROUND: Hemorrhagic shock leads to a complex cascade of metabolic and hormonal processes that may result in hypoperfusion, end organ damage, and death even when blood pressure is restored. Studies have shown that morbidity and mortality could be attributable to a diminished availability of endothelial-derived nitric oxide (eNO). It is unclear whether adequate levels of citrulline (CIT) and arginine (ARG)--the precursors of eNO synthesis--are available to sustain the eNO needed to maintain adequate perfusion in severe shock...
October 2014: Surgery
Ivana Basta, Ana Nikolić, Slobodan Apostolski, Slobodan Lavrnić, Tatjana Stosić-Opinćal, Sandra Banjalić, Sladana Knezević-Apostolski, Tihomir V Ilić, Ivan Marjanović, Milena Milićev, Dragana Lavrnić
BACKGROUND/AIM: Multifocal motor neuropathy (MMN) is an immune-mediated disorder characterised by slowly progressive asymetrical weakness of limbs without sensory loss. The objective of this study was to investigate the involvement of brachial plexus using combined cervical magnetic stimulation and magnetic resonance imaging (MRI) of plexus brachialis in patients with MMN. We payed special attention to the nerve roots forming nerves inervating weak muscles, but without detectable conduction block (CB) using conventional nerve conduction studies...
August 2014: Vojnosanitetski Pregled. Military-medical and Pharmaceutical Review
Grégory Genta-Jouve, Olivier P Thomas
The marine sponge Haliclona fulva (previously described as Reniera fulva) is widespread in the Mediterranean Sea. The chemical study of the sponge led to the isolation and identification of a new compound: 3-epi-cladocroic acid (1) alongside the previously reported cladocroic acid (2) and some other known compounds previously isolated. The structure was fully determined on the basis of extensive analysis by 1D and 2D NMR, as well as GC-MS/MS. The absolute configuration was determined by comparison of the experimental electronic circular dichroism (ECD) spectra with theoretically calculated spectra; these results may be extended to other asymetric cyclopropane carboxylic acids...
2013: Metabolites
Fa-Chun Hu, Sheng-Wei Wang, Yun Chi, Neil Robertson, Tracy Hewat, Yue Hu, Shih-Hung Liu, Pi-Tai Chou, Po-Fan Yang, Hao-Wu Lin
To supplement our study on thiocyanate-free ruthenium sensitizers (TFRS) for dye-sensitized solar cells (DSSCs), which belong to a class of Ru(II)-based complexes coordinated by a single 4,4'-dicarboxylic acid-2,2'-bipyridine and two symmetrically arranged functionalized trans-azolate chelates, we carefully isolated and characterized the second and less-abundant stereoisomer, in which the two pyridyl azolate ancillaries are asymetrically cis-arranged to each other. Two distinctive ancillaries, namely: 5-[4-(5-hexyl-2-thienyl)-2-pyridinyl]-3-trifluoromethyl pyrazole and 5-(6-tert-butyl-1-isoquinolinyl)-3-trifluoromethyl pyrazole, were employed in this study, giving a total of four sensitizers, that is, thienyl substituted TFRS-2 a and 2 b, and isoquinolinyl substituted TFRS-52 a and 52 b, in which the suffix b indicates the cis-stereoisomers...
April 14, 2014: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
Thomas Forst, Ernestos Anastassiadis, Stephan Diessel, Andrea Löffler, Andreas Pfützner
BACKGROUND: The goal of this study was to investigate the effects of linagliptin compared with glimepiride on alpha and beta cell function and several vascular biomarkers after a standardized test meal. METHODS: Thirty-nine patients on metformin alone (age, 64 ± 7 years; duration of type 2 diabetes mellitus, 7.8 ± 4.5years, 27 male, 12 female; HbA1c , 57.2 ± 6.9 mmol/mol; mean ± SD) were randomized to receive linagliptin 5 mg (n = 19) or glimepiride (n = 20) for a study duration of 12 weeks...
October 2014: Diabetes/metabolism Research and Reviews
Z Lest'anová, Z Bacová, T Havránek, J Bakos
Brain development is determined by neuronal differentiation including changes of cell polarity and asymetric growth of neuronal processes. Although, there are many unkown factors contributing to changes of lenght of neuronal cones, mounting experimental and review papers focus on changes of growth conus and role of axonal transport. In particular, mechanisms of actin/microtubule polymerisation and depolymerisation are important. Role of intracellular calcium is also significant. Normal and properly timed changes of lenght of axons and dendrites are dependent on interaction of neurons and glia...
2013: Ceskoslovenská Fysiologie
Birgit Nikolay, Anne Dupressoir, Cadhla Firth, Ousmane Faye, Cheikh S Boye, Mawlouth Diallo, Amadou A Sall
BACKGROUND: Usutu virus (USUV), a flavivirus belonging to the Japanese encephalitis serocomplex, was identified in South Africa in 1959 and reported for the first time in Europe in 2001. To date, full length genome sequences have been available only for the reference strain from South Africa and a single isolate from each of Austria, Hungary, and Italy. METHODS: We sequenced four USUV isolates from Senegal and the Central African Republic (CAR) between 1974 and 2007 and compared the sequence data to USUV strains from Austria, Hungary, Italy, and South Africa using a Bayesian Markov chain Monte Carlo method...
2013: Virology Journal
Konstantin Dorst, Wolfgang Frey, Dongren Wang, Michael Buchmeiser
The title compound, [Ru(C7F5O2)2(C10H14)(C21H24N2)]·2CH2Cl2, is formed as an orange crystalline powder by the reaction of RuCl2(p-cymene)(IMes) and AgOCOC6F5 in anhydrous tetra-hydro-furan (IMes = 1,3-dimesityl-2,3-di-hydro-1H-imidazol-2-yl-idene). The asymetric unit consists of two independent [Ru(C6F5COO)2(η(6)-p-cymene)(IMes)] com-plexes and four dichloro-methane solvent mol-ecules. In each complex molecule, the Ru atom presents a pseudo-octa-hedral environment with the p-cymene ligand occupying three facial coordination sites, while the remaining coordination positions are occupied by the O atoms of the penta-fluoro-benzoate ligands and by the imidazolyl-idene ligand...
January 1, 2013: Acta Crystallographica. Section E, Structure Reports Online
Vincent O Nyamori, Godfrey Keru, Bernard Omondi
The asymetric unit of the title compound, [Fe(C5H5)(C17H13N2)], contains two independent mol-ecules whose conformations differ, especially in the 4-{(pyridin-4-yl)methyl-idene]amino}-phenyl unit where one is flipped by almost 180°. The cyclo-penta-dienyl rings of the ferrocene unit also exhibit different staggered conformations: in one mol-ecule the conformation is staggered by 9.43 (2)° and in the other by 24.46 (1)° from an ideal eclipsed geometry. The plane of the benzene ring is tilted away from the ferrocene group in both mol-ecules, with dihedral angles of 6...
December 1, 2012: Acta Crystallographica. Section E, Structure Reports Online
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