Read by QxMD icon Read


Donato Belmonte, Carlo Gatti, Giulio Armando Ottonello, Pascal Richet, Marino Vetuschi Zuccolini
Thermodynamic and thermophysical properties of Na2SiO3 in the Cmc21 structural state are computed ab-initio using the hybrid B3LYP density functional method. The static properties at the athermal limit are first evaluated through a symmetry-preserving relaxation procedure. The thermodynamic properties that depend on vibrational frequencies viz, heat capacities, thermal expansion, thermal derivative of the bulk modulus, thermal correction to internal energy, enthalpy, Gibbs free energy, are then computed in the framework of quasi-harmonic approximation...
October 19, 2016: Journal of Physical Chemistry. A
Sulaf Alwassouf, Carla Maia, Nazli Ayhan, Monica Coimbra, Jose Manuel Cristovao, Herve Richet, Laurence Bichaud, Lenea Campino, Remi N Charrel
Sandfly-borne phleboviruses are endemic in the Mediterranean basin. However, levels of exposure of human and animal populations are poorly known. Recent data from Portugal indicate that Toscana virus (Sandfly fever Naples species) is present and causes human infection and diseases; in contrast there is scarce data for Sandfly fever Sicilian virus (SFSV) which has neither been isolated nor detected by molecular tests and for which there is only limited serological data. A total of 1,160 dogs and 189 cats of southern Portugal were tested for neutralising antibodies against Toscana virus (TOSV) and Sandfly fever Sicilian virus (SFSV),two viruses belonging to distinct serocomplexes in the Mediterranean area...
September 2, 2016: Journal of General Virology
F Fenollar, P Minodier, A Boutin, R Laporte, V Brémond, G Noël, S Miramont, H Richet, S Benkouiten, J-C Lagier, J Gaudart, J-L Jouve, D Raoult
Tropheryma whipplei was detected in preliminary studies in faeces of young children with diarrhoea and also in faeces of asymptomatic persons, not only in Europe but also in Africa. In this study, the link between this bacterium and the presence of acute diarrhoea was evaluated in a large group of children. From December 2009 to January 2013, rectal swabs collected from 3796 children in the emergency departments of university hospitals in Marseille, France, were analysed: 555 children (245 female and 310 male, from 6 days to 6 years old) with acute diarrhoea defined as at least three loose stools per day for <1 week and 3241 children (1444 female and 1797 male, from 22 days to 6 years old) without diarrhoea...
July 9, 2016: Clinical Microbiology and Infection
María Rodríguez-Castillo, Gustavo Lugo-Preciado, Danielle Laurencin, Frederik Tielens, Arie van der Lee, Sébastien Clément, Yannick Guari, José M López-de-Luzuriaga, Miguel Monge, Françoise Remacle, Sébastien Richeter
The reactivity of benzimidazol-2-ylidenes with respect to gold nanoparticles (AuNPs) has been investigated using a combined experimental and computational approach. First, the grafting of benzimidazol-2-ylidenes bearing benzyl groups on the nitrogen atoms is described, and comparisons are made with structurally similar N-heterocyclic carbenes (NHCs) bearing other N-groups. Similar reactivity was observed for all NHCs, with 1) the erosion of the AuNPs under the effect of the NHC and 2) the formation of bis(NHC) gold complexes...
July 18, 2016: Chemistry: a European Journal
Andrea Graus
In 1888, the spiritist Ercole Chiaia challenged Cesare Lombroso to go to Naples and study a brilliant though still unknown medium: Eusapia Palladino. At that time Lombroso turned down the challenge. However, in 1891 he became fascinated by the medium's phenomena. Despite the abundant literature on Palladino, there is still an episode that needs to be explored: in 1888, the Spanish doctor Manuel Otero Acevedo accepted the challenge rejected by Lombroso, spent three months in Naples studying the medium and invited the Italian psychiatrist to join his investigations...
July 2016: Journal of the History of the Behavioral Sciences
Emmanouil Angelakis, Herve Richet, Didier Raoult
To further characterize human infections caused by Rickettsia sibirica mongolitimonae, we tested skin biopsy and swab samples and analyzed clinical, epidemiologic, and diagnostic characteristics of patients with a rickettsiosis. The most common (38%) indigenous species was R. sibirica mongolitimonae. Significantly more cases of R. sibirica mongolitimonae infection occurred during spring and summer.
May 2016: Emerging Infectious Diseases
Mathieu Nivon, Loïc Fort, Pascale Muller, Emma Richet, Stéphanie Simon, Baptiste Guey, Maëlenn Fournier, André-Patrick Arrigo, Claudio Hetz, Julie D Atkin, Carole Kretz-Remy
During cell life, proteins often misfold, depending on particular mutations or environmental changes, which may lead to protein aggregates that are toxic for the cell. Such protein aggregates are the root cause of numerous diseases called "protein conformational diseases," such as myofibrillar myopathy and familial amyotrophic lateral sclerosis. To fight against aggregates, cells are equipped with protein quality control mechanisms. Here we report that NFκB transcription factor is activated by misincorporation of amino acid analogues into proteins, inhibition of proteasomal activity, expression of the R120G mutated form of HspB5 (associated with myofibrillar myopathy), or expression of the G985R and G93A mutated forms of superoxide dismutase 1 (linked to familial amyotrophic lateral sclerosis)...
June 1, 2016: Molecular Biology of the Cell
Raymond Ardaillou, Pierre Ronco
Gabriel Richet who died in Paris in October 2014 was the fourth of a brilliant dynasty of professors of medicine including a Nobel prize, his grandfather, Charles Richet. He behaved courageously during the Second World War and participated in the Campaign of France in 1940 and in the combats in the Vosges Mountains in 1945. His family participated in the resistance during the German occupation of France and three of his parents including his father, one of his brothers and one of his cousins were deported in Germany...
February 2016: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
Pierre Legrand, Barry Collins, Stéphanie Blangy, James Murphy, Silvia Spinelli, Carlos Gutierrez, Nicolas Richet, Christine Kellenberger, Aline Desmyter, Jennifer Mahony, Douwe van Sinderen, Christian Cambillau
UNLABELLED: The Gram-positive bacterium Lactococcus lactis, used for the production of cheeses and other fermented dairy products, falls victim frequently to fortuitous infection by tailed phages. The accompanying risk of dairy fermentation failures in industrial facilities has prompted in-depth investigations of these phages. Lactococcal phage Tuc2009 possesses extensive genomic homology to phage TP901-1. However, striking differences in the baseplate-encoding genes stimulated our interest in solving the structure of this host's adhesion device...
2016: MBio
Michèle Chevrier, Sébastien Richeter, Olivier Coulembier, Mathieu Surin, Ahmad Mehdi, Roberto Lazzaroni, Rachel C Evans, Philippe Dubois, Sébastien Clément
Poly(3-hexylthiophene)s end-functionalized with π-extended porphyrins have been synthesized in a one-pot procedure. The polymers show a broad absorption profile extending to 700 nm and a fibrillar microstructure, which can be tuned through judicious selection of the porphyrin molar ratio.
January 4, 2016: Chemical Communications: Chem Comm
S Hansen, F Schwab, P Gastmeier, D Pittet, W Zingg, H Sax, P Gastmeier, S Hansen, H Grundmann, B van Benthem, T van der Kooi, M Dettenkofer, M Martin, H Richet, E Szilágyi, O E Központ, P B Heczko, A Holmes, Y Kyratsis, R Ahmad, B Allegranzi, A Magiorakos, B Cookson, A W Wu
Hand hygiene is considered to be the most effective way of preventing microbial transmission and healthcare-associated infections. The use of alcohol-based hand rubs (AHRs) is the reference standard for effective hand hygiene. AHR consumption is a valuable surrogate parameter for hand hygiene performance, and it can be easily tracked in the healthcare setting. AHR availability at the point of care ensures access to optimal agents, and makes hand hygiene easier by overcoming barriers such as lack of AHRs or inconvenient dispenser locations...
December 2015: Clinical Microbiology and Infection
Nadim Cassir, Silvestre De La Rosa, Anthony Melot, Adamou Touta, Lucas Troude, Anderson Loundou, Hervé Richet, Pierre-Hugues Roche
BACKGROUND: Surgical site infection (SSI) after neurosurgery has potentially devastating consequences. METHODS: A prospective cohort study was conducted over a period of 24 months in a university center. All adult patients undergoing neurosurgical procedures, with exception of open skull fractures, were included. Multivariate logistic regression analysis was used to identify independent risk factors. RESULTS: We included 949 patients. Among them, 43 were diagnosed with SSI (4...
December 1, 2015: American Journal of Infection Control
Xavier Fritel, Renaud de Tayrac, Georges Bader, Denis Savary, Ameth Gueye, Xavier Deffieux, Hervé Fernandez, Claude Richet, Joëlle Guilhot, Arnaud Fauconnier
OBJECTIVE: To compare, in an unselected population of nulliparous pregnant women, the postnatal effect of prenatal supervised pelvic floor muscle training with written instructions on postpartum urinary incontinence (UI). METHODS: In a randomized controlled trial in two parallel groups, 282 women were recruited from five university teaching hospitals in France and randomized during the second trimester of pregnancy. The physiotherapy group received prenatal individually supervised exercises...
August 2015: Obstetrics and Gynecology
Jenifer Rubio-Magnieto, Elias Gebremedhn Azene, Jérémie Knoops, Stefan Knippenberg, Cécile Delcourt, Amandine Thomas, Sébastien Richeter, Ahmad Mehdi, Philippe Dubois, Roberto Lazzaroni, David Beljonne, Sébastien Clément, Mathieu Surin
The combination of DNA and π-conjugated polyelectrolytes (CPEs) represents a promising approach to develop DNA hybridization biosensors, with potential applications for instance in the detection of DNA lesions and single-nucleotide polymorphisms. Here we exploit the remarkable optical properties of a cationic poly[3-(6'-(trimethylphosphonium)hexyl)thiophene-2,5-diyl] (CPT) to decipher the self-assembly of DNA and CPT. The ssDNA/CPT complexes have chiroptical signatures in the CPT absorption region that are strongly dependent on the DNA sequence, which we relate to differences in supramolecular interactions between the thiophene monomers and the various nucleobases...
August 28, 2015: Soft Matter
Mélanie Mauriat, Jean-Charles Leplé, Stéphane Claverol, Jérôme Bartholomé, Luc Negroni, Nicolas Richet, Céline Lalanne, Marc Bonneu, Catherine Coutand, Christophe Plomion
Trees adjust their growth following forced changes in orientation to re-establish a vertical position. In angiosperms, this adjustment involves the differential regulation of vascular cambial activity between the lower (opposite wood) and upper (tension wood) sides of the leaning stem. We investigated the molecular mechanisms leading to the formation of differential wood types through a quantitative proteomic and phosphoproteomic analysis on poplar subjected to a gravitropic stimulus. We identified and quantified 675 phosphopeptides, corresponding to 468 phosphoproteins, and 3 763 nonphosphorylated peptides, corresponding to 1 155 proteins, in the differentiating xylem of straight-growing trees (control) and trees subjected to a gravitational stimulus during 8 weeks...
August 7, 2015: Journal of Proteome Research
Nanikaly Moyen, Laurence Thirion, Petra Emmerich, Amelia Dzia-Lepfoundzou, Hervé Richet, Yannik Boehmann, Yannick Dimi, Pierre Gallian, Ernest A Gould, Stephan Günther, Xavier de Lamballerie
BACKGROUND: Ebola and Marburg viruses (family Filoviridae, genera Ebolavirus and Marburgvirus) cause haemorrhagic fevers in humans, often associated with high mortality rates. The presence of antibodies to Ebola virus (EBOV) and Marburg virus (MARV) has been reported in some African countries in individuals without a history of haemorrhagic fever. In this study, we present a MARV and EBOV seroprevalence study conducted amongst blood donors in the Republic of Congo and the analysis of risk factors for contact with EBOV...
2015: PLoS Neglected Tropical Diseases
Carolina Baron, Mireille Henry, Catherine Tamalet, Julia Villeret, Herve Richet, Xavier Carcopino
Better understanding of the correlation between high-risk HPV DNA testing, viral load quantitation, and E6/E7 mRNA detection is required. The aim of this study was to assess the relationship between these markers and the severity of cervical lesions. One-hundred and fifty one directed cervical specimens were analysed (normal, cervical intraepithelial neoplasia, and cancer). HPV types 16, 18, 31, 33, and 45 DNA detection and quantititation and E6/E7 mRNA detection were performed. DNA was detected in 87 (57.6%) samples and increased from 0% (normal) to 93...
August 2015: Journal of Medical Virology
Catherine Tamalet, Isabelle Ravaux, Jacques Moreau, Sylvie Brégigeon, Christian Tourres, Hervé Richet, Cedric Abat, Philippe Colson
The number of new HIV diagnoses is increasing in the western world and transmission clusters have been recently identified among men having sex with men despite Highly Active Antiretroviral Therapy efficacy. The objective of this study was to assess temporal trends, epidemiological, clinical and virological characteristics of primary HIV infections. A retrospective analysis of 79 patients presenting primary HIV infections from 2005 to 2012 was performed in Marseille University Hospitals, southeastern France...
August 2015: Journal of Medical Virology
Krzysztof Szpila, René Richet, Thomas Pape
Necrophagous Sarcophagidae are among the insects most frequently reported from human corpses. The broad forensic application of flesh flies is restricted by the lack of reliable tools for species identification of larval stages and mass breeding of collected flesh fly larvae to the adult stage, and more recently DNA-based methods are usually recommended for precise species identification. To overcome this situation, the following study was implemented: (1) original larval material was obtained of the European flesh flies of confirmed or potential forensic importance; (2) larval morphology was studied and documented using a combination of standard light microscopy, image-stacking stereomicroscopy and SEM; and (3) larval characters used in previously published keys were critically revised...
June 2015: Parasitology Research
Giulio Ottonello, Pascal Richet
The existing solubility data on noble gases in high-temperature silicate melts have been analyzed in terms of Scaling Particle Theory coupled with an ab initio assessment of the electronic, dispersive, and repulsive energy terms based on the Polarized Continuum Model (PCM). After a preliminary analysis of the role of the contracted Gaussian basis sets and theory level in reproducing appropriate static dipole polarizabilities in a vacuum, we have shown that the procedure returns Henry's law constants consistent with the values experimentally observed in water and benzene at T = 25 °C and P = 1 bar for the first four elements of the series...
January 28, 2014: Journal of Chemical Physics
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"