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https://www.readbyqxmd.com/read/28936678/biomarker-based-strategy-for-early-discontinuation-of-empirical-antifungal-treatment-in-critically-ill-patients-a-randomized-controlled-trial
#1
Anahita Rouzé, Séverine Loridant, Julien Poissy, Benoit Dervaux, Boualem Sendid, Marjorie Cornu, Saad Nseir
PURPOSE: The aim of this study was to determine the impact of a biomarker-based strategy on early discontinuation of empirical antifungal treatment. METHODS: Prospective randomized controlled single-center unblinded study, performed in a mixed ICU. A total of 110 patients were randomly assigned to a strategy in which empirical antifungal treatment duration was determined by (1,3)-β-D-glucan, mannan, and anti-mannan serum assays, performed on day 0 and day 4; or to a routine care strategy, based on international guidelines, which recommend 14 days of treatment...
September 22, 2017: Intensive Care Medicine
https://www.readbyqxmd.com/read/28932756/non-clinical-safety-and-efficacy-of-an-aav2-8-vector-administered-intravenously-for-treatment-of-mucopolysaccharidosis-type-vi
#2
Rita Ferla, Marialuisa Alliegro, Jean-Brice Marteau, Margherita Dell'Anno, Edoardo Nusco, Severine Pouillot, Stefania Galimberti, Maria Grazia Valsecchi, Vincent Zuliani, Alberto Auricchio
In vivo gene therapy with adeno-associated viral (AAV) vectors is safe and effective in humans. We recently demonstrated that AAV8-mediated liver gene transfer is effective in animal models of mucopolysaccharidosis type VI (MPS VI), a rare lysosomal storage disease that is caused by arylsulfatase B (ARSB) deficiency. In preparing for a first-in-human trial, we performed non-clinical studies to assess the safety of intravenous administrations of AAV2/8.TBG.hARSB produced under good manufacturing practice-like conditions...
September 15, 2017: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/28931839/multiwell-capillarity-based-microfluidic-device-for-the-study-of-3d-tumour-tissue-2d-endothelium-interactions-and-drug-screening-in-co-culture-models
#3
María Virumbrales-Muñoz, José María Ayuso, Marta Olave, Rosa Monge, Diego de Miguel, Luis Martínez-Lostao, Séverine Le Gac, Manuel Doblare, Ignacio Ochoa, Luis J Fernandez
The tumour microenvironment is very complex, and essential in tumour development and drug resistance. The endothelium is critical in the tumour microenvironment: it provides nutrients and oxygen to the tumour and is essential for systemic drug delivery. Therefore, we report a simple, user-friendly microfluidic device for co-culture of a 3D breast tumour model and a 2D endothelium model for cross-talk and drug delivery studies. First, we demonstrated the endothelium was functional, whereas the tumour model exhibited in vivo features, e...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28931416/social-disparities-in-food-preparation-behaviours-a-dedipac-study
#4
Caroline Méjean, Wendy Si Hassen, Séverine Gojard, Pauline Ducrot, Aurélie Lampuré, Hans Brug, Nanna Lien, Mary Nicolaou, Michelle Holdsworth, Laura Terragni, Serge Hercberg, Katia Castetbon
BACKGROUND: The specific role of major socio-economic indicators in influencing food preparation behaviours could reveal distinct socio-economic patterns, thus enabling mechanisms to be understood that contribute to social inequalities in health. This study investigated whether there was an independent association of each socio-economic indicator (education, occupation, income) with food preparation behaviours. METHODS: A total of 62,373 adults participating in the web-based NutriNet-Santé cohort study were included in our cross-sectional analyses...
September 20, 2017: Nutrition Journal
https://www.readbyqxmd.com/read/28930019/hantavirus-pulmonary-syndrome-caused-by-maripa-virus-in-french-guiana-2008-2016
#5
Séverine Matheus, Hatem Kallel, Claire Mayence, Laetitia Bremand, Stéphanie Houcke, Dominique Rousset, Vincent Lacoste, Benoit de Thoisy, Didier Hommel, Anne Lavergne
We report 5 human cases of hantavirus pulmonary syndrome found during surveillance in French Guiana in 2008-2016; of the 5 patients, 4 died. This pathogen should continue to be monitored in humans and rodents in effort to reduce the occurrence of these lethal infections in humans stemming from ecosystem disturbances.
October 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28930015/zika-virus-persistence-and-higher-viral-loads-in-cutaneous-capillaries-than-in-venous-blood
#6
Séverine Matheus, Franck de Laval, David Moua, Christophe N'Guyen, Enguerrane Martinez, Dominique Rousset, Sébastien Briolant
We collected venous and capillary serum samples from 21 Zika virus‒infected patients on multiple days after symptom onset and found RNA load was higher and median duration of virus detection significantly longer in capillary than in venous blood. These findings raise questions about the role of the capillary compartment in virus transmission dynamics.
November 15, 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28927638/quantitative-risk-assessment-via-uncertainty-analysis-in-combination-with-error-propagation-for-the-determination-of-the-dynamic-design-space-of-the-primary-drying-step-during-freeze-drying
#7
Pieter-Jan Van Bockstal, Séverine Thérèse F C Mortier, Jos Corver, Ingmar Nopens, Krist V Gernaey, Thomas De Beer
Traditional pharmaceutical freeze-drying is an inefficient batch process often applied to improve the stability of biopharmaceutical drug products. The freeze-drying process is regulated by the (dynamic) settings of the adaptable process parameters shelf temperature Ts and chamber pressure Pc. Mechanistic modelling of the primary drying step allows the computation of the optimal combination of Ts and Pc in function of the primary drying time. In this study, an uncertainty analysis was performed on the mechanistic primary drying model to construct the dynamic Design Space for the primary drying step of a freeze-drying process, allowing to quantitatively estimate and control the risk of cake collapse (i...
September 16, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28926739/electrophysiological-correlates-of-performance-monitoring-in-binge-drinking-impaired-error-related-but-preserved-feedback-processing
#8
Séverine Lannoy, Fabien D'Hondt, Valérie Dormal, Joël Billieux, Pierre Maurage
OBJECTIVE: Performance monitoring, which allows efficient behavioral regulation using either internal (error processing) or external (feedback processing) cues, has not yet been explored in binge drinking despite its adaptive importance in everyday life, particularly in the regulation of alcohol consumption. Capitalizing on a theoretical model of risky behaviors, the present study aimed at determining the behavioral and electrophysiological correlates of the cognitive (inhibition) and motivational (reward sensitivity) systems during performance monitoring...
September 2, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28924015/no-mediates-nitrite-sensing-and-adaptation-and-triggers-a-remodeling-of-lipids
#9
Lina J Dolch, Josselin Lupette, Guillaume Tourcier, Mariette Bedhomme, Séverine Collin, Leonardo Magneschi, Melissa Conte, Khawla Seddiki, Christelle Richard, Erwan Corre, Laurent Fourage, Frédéric Laeuffer, Robert Richards, Michael Reith, Fabrice Rébeillé, Juliette Jouhet, Patrick McGinn, Eric Marechal
Nitric oxide (NO) is an intermediate of the nitrogen cycle, an industrial pollutant and a marker of climate change. NO also acts as a gaseous transmitter in a variety of biological processes. The impact of environmental NO needs to be addressed. In diatoms, a dominant phylum in phytoplankton, NO was reported to mediate programmed cell death (PCD) in response to diatom derived polyunsaturated aldehydes. Here, using the Phaeodactylum Pt1 strain, 2E,4E-decadienal supplied in the micromolar concentration range led to a non-specific cell toxicity...
September 18, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28922856/building-up-absence-seizures-in-the-somatosensory-cortex-from-network-to-cellular-epileptogenic-processes
#10
Guillaume Jarre, Tristan Altwegg-Boussac, Mark S Williams, Florian Studer, Mathilde Chipaux, Olivier David, Stéphane Charpier, Antoine Depaulis, Séverine Mahon, Isabelle Guillemain
The epileptogenic processes leading to recurrent seizures in Genetic Epilepsies are largely unknown. Using the Genetic Absence Epilepsy Rat from Strasbourg, we investigated in vivo the network and single neuron mechanisms responsible for the early emergence of epileptic activity. Local field potential recordings in the primary somatosensory cortex (SoCx), from the second post-natal week to adulthood, showed that immature cortical discharges progressively evolved into typical spike-and-wave discharges following a 3-step maturation process...
September 1, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28920000/oncolytic-peptide-ltx-315-induces-an-immune-mediated-abscopal-effect-in-a-rat-sarcoma-model
#11
Janne Nestvold, Meng-Yu Wang, Ketil A Camilio, Severin Zinöcker, Torunn Elisabeth Tjelle, Alf Lindberg, Bengt Erik Haug, Gunnar Kvalheim, Baldur Sveinbjørnsson, Øystein Rekdal
LTX 315 is an oncolytic peptide with potent immunological properties. In the present study, we demonstrate that intratumoral treatment with LTX-315 resulted in a complete regression and systemic immune response in a rat fibrosarcoma model. The treatment was T-cell dependent, and also resulted in an abscopal effect as demonstrated by the regression of distal non-treated lesions. Significant infiltration of CD8(+) T cells was observed in both treated and non-treated lesions, as shown by immunohistochemical and flow cytometric analysis...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28917304/prevalence-of-ticks-and-tick-borne-pathogens-babesia-and-borrelia-species-in-ticks-infesting-cats-of-great-britain
#12
Saran Davies, Swaid Abdullah, Chris Helps, Séverine Tasker, Hannah Newbury, Richard Wall
In a study of tick and tick-borne pathogen prevalence, between May and October 2016, 278 veterinary practices in Great Britain examined 1855 cats. Six-hundred and one cats were found to have attached ticks. The most frequently recorded tick species was Ixodes ricinus (57.1%), followed by Ixodes hexagonus (41.4%) and Ixodes trianguliceps (1.5%). Male cats, 4-6 years of age living in rural areas were most likely to be carrying a tick; hair length and tick treatment history had no significant association with attachment...
September 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28915995/detection-and-molecular-characterization-of-feline-hemoplasmas-in-wild-felid-species-in-iran-in-the-middle-east
#13
Fereshteh Ghazisaeedi, Nahid Atyabi, Taghi Zahraei Salehi, Saeid Tabatabaei, Iraj Ashrafi Tamai, Iman Memarian, Séverine Tasker
Three feline hemoplasma species exist in felids: Mycoplasma haemofelis, 'Candidatus Mycoplasma haemominutum', and 'Candidatus Mycoplasma turicensis'. The aims of the study were to determine the presence of, and molecularly characterize, any hemoplasmas in wild felids, including the endangered Persian leopard in Iran, the Middle East. Blood samples were collected from 19 wild felids, including three Persian leopards. Using species-specific hemoplasma PCRs and ELISA serological testing for feline leukaemia virus and feline immunodeficiency virus (FIV), two Persian leopards were found to be infected with 'Ca...
October 2017: Comparative Immunology, Microbiology and Infectious Diseases
https://www.readbyqxmd.com/read/28912830/in-vitro-oxidative-decarboxylation-of-free-fatty-acids-to-terminal-alkenes-by-two-new-p450-peroxygenases
#14
Huifang Xu, Linlin Ning, Wenxia Yang, Bo Fang, Cong Wang, Yun Wang, Jian Xu, Severine Collin, Frederic Laeuffer, Laurent Fourage, Shengying Li
BACKGROUND: P450 fatty acid decarboxylases represented by the unusual CYP152 peroxygenase family member OleTJE have been receiving great attention recently since these P450 enzymes are able to catalyze the simple and direct production of 1-alkenes for potential applications in biofuels and biomaterials. To gain more mechanistic insights, broader substrate spectra, and improved decarboxylative activities, it is demanded to discover and investigate more P450 fatty acid decarboxylases. RESULTS: Here, we describe for the first time the expression, purification, and in vitro biochemical characterization of two new CYP152 peroxygenases, CYP-Aa162 and CYP-Sm46Δ29, that are capable of decarboxylating straight-chain saturated fatty acids...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28903944/a-dual-role-for-the-class-iii-pi3k-vps34-in-platelet-production-and-thrombus-growth
#15
Colin Valet, Marie Levade, Gaëtan Chicanne, Benoit Bilanges, Cendrine Cabou, Julien Viaud, Marie-Pierre Gratacap, Frédérique Gaits-Iacovoni, Bart Vanhaesebroeck, Bernard Payrastre, Sonia Severin
To uncover the role of Vps34, the sole class III phosphoinositide 3-kinase, in megakaryocytes (MKs) and platelets, we created a mouse model with Vps34 deletion in the MK/platelet lineage (Pf4-Cre/Vps34(lox/lox)). Deletion of Vps34 in MKs led to the loss of its regulator protein Vps15, and was associated with microthrombocytopenia and platelet granule abnormalities. While Vps34 deficiency did not impact on MK polyploidisation or proplatelet formation, it dampened MK granule biogenesis and directional migration towards an SDF1α gradient, leading to ectopic platelet release within the bone marrow...
September 13, 2017: Blood
https://www.readbyqxmd.com/read/28903769/specific-barriers-to-the-conduct-of-randomised-clinical-trials-on-medical-devices
#16
REVIEW
Edmund A M Neugebauer, Ana Rath, Sunya-Lee Antoine, Michaela Eikermann, Doerthe Seidel, Carsten Koenen, Esther Jacobs, Dawid Pieper, Martine Laville, Séverine Pitel, Cecilia Martinho, Snezana Djurisic, Jacques Demotes-Mainard, Christine Kubiak, Vittorio Bertele, Janus C Jakobsen, Silvio Garattini, Christian Gluud
BACKGROUND: Medical devices play an important role in the diagnosis, prevention, treatment and care of diseases. However, compared to pharmaceuticals, there is no rigorous formal regulation for demonstration of benefits and exclusion of harms to patients. The medical device industry argues that the classical evidence hierarchy cannot be applied for medical devices, as randomised clinical trials are impossible to perform. This article aims to identify the barriers for randomised clinical trials on medical devices...
September 13, 2017: Trials
https://www.readbyqxmd.com/read/28902133/effects-of-wildflower-strips-and-an-adjacent-forest-on-aphids-and-their-natural-enemies-in-a-pea-field
#17
Séverin Hatt, Pierre Mouchon, Thomas Lopes, Frédéric Francis
Landscape diversification is a key element for the development of sustainable agriculture. This study explores whether the implementation of habitats for pest natural enemies enhances conservation biological control in an adjacent field. In the present study conducted in Gembloux (Belgium) in 2016, the effect of two different habitats (wildflower strips and a forest) and aphid abundance on the density of aphid natural enemies, mummified aphids and parasitism on pea plants was assessed through visual observations...
September 13, 2017: Insects
https://www.readbyqxmd.com/read/28901687/treatment-of-multiple-maxillary-adjacent-class-i-and-ii-gingival-recessions-with-modified-coronally-advanced-tunnel-and-a-new-xenogeneic-acellular-dermal-matrix
#18
Séverine Vincent-Bugnas, Gwenaël Borie, Yves Charbit
OBJECTIVE: To evaluate the treatment of maxillary Miller Class I and II multiple adjacent gingival recessions using the modified coronally advanced tunnel technique (MCAT) combined with a new porcine acellular dermal matrix (PADM). MATERIALS AND METHODS: Twelve patients exhibiting at least six adjacent maxillary Miller Class I and II gingival recessions were consecutively treated by means of MCAT and a PADM. Recession depth (RD), recession width (RW), probing pocket depth (PD), keratinized tissue height (KT), clinical attachment level (CAL), mean root coverage (RC), and complete root coverage (CRC) were recorded...
September 13, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28895885/anaplastic-lymphoma-kinase-in-cutaneous-malignancies
#19
REVIEW
Severine Cao, Vinod E Nambudiri
Anaplastic lymphoma kinase (ALK) is a receptor tyrosine kinase that has been implicated in the pathogenesis of a variety of neoplasms. As suggested by its name, ALK was first described as part of a translocation product in cases of anaplastic large-cell lymphoma, with other genetic and cytogenetic ALK mutations subsequently coming to attention in the development of many other hematologic and solid organ malignancies. ALK has now been shown to play a role in the pathogenesis of several cutaneous malignancies, including secondary cutaneous systemic anaplastic large-cell lymphoma (ALCL) and primary cutaneous ALCL, melanoma, spitzoid tumors, epithelioid fibrous histiocytoma, Merkel cell carcinoma, and basal cell carcinoma...
September 12, 2017: Cancers
https://www.readbyqxmd.com/read/28893410/an-artificial-neural-network-to-predict-resting-energy-expenditure-in-obesity
#20
Emmanuel Disse, Séverine Ledoux, Cécile Bétry, Cyrielle Caussy, Christine Maitrepierre, Muriel Coupaye, Martine Laville, Chantal Simon
BACKGROUND & AIMS: The resting energy expenditure (REE) determination is important in nutrition for adequate dietary prescription. The gold standard i.e. indirect calorimetry is not available in clinical settings. Thus, several predictive equations have been developed, but they lack of accuracy in subjects with extreme weight including obese populations. Artificial neural networks (ANN) are useful predictive tools in the area of artificial intelligence, used in numerous clinical fields...
September 1, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
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