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https://www.readbyqxmd.com/read/28551363/salamanders-on-the-bench-a-biocompatibility-study-of-salamander-skin-secretions-in-cell-cultures
#1
Janek von Byern, Dietrich Mebs, Egon Heiss, Ursula Dicke, Oliver Wetjen, Kristin Bakkegard, Ingo Grunwald, Susanne Wolbank, Severin Mühleder, Alfred Gugerell, Heidemarie Fuchs, Sylvia Nuernberger
Salamanders have evolved a wide variety of antipredator mechanisms and behavior patterns, including toxins and noxious or adhesive skin secretions. The high bonding strength of the natural bioadhesives makes these substances interesting for biomimetic research and applications in industrial and medical sectors. Secretions of toxic species may help to understand the direct effect of harmful substances on the cellular level. In the present study, the biocompatibility of adhesive secretions from four salamander species (Plethodon shermani, Plethodon glutinosus, Ambystoma maculatum, Ambystoma opacum) were analyzed using the MTT assay in cell culture and evaluated against toxic secretions of Pleurodeles waltl, Triturus carnifex, Pseudotriton ruber, Tylototriton verrucosus, and Salamandra salamandra...
May 24, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28546764/optimal-management-of-primary-focal-segmental-glomerulosclerosis-in-adults
#2
REVIEW
Séverine Beaudreuil, Hans Kristian Lorenzo, Michele Elias, Erika Nnang Obada, Bernard Charpentier, Antoine Durrbach
Focal segmental glomerulosclerosis (FSGS) is a frequent glomerular kidney disease that is revealed by proteinuria or even nephrotic syndrome. A diagnosis can be established from a kidney biopsy that shows focal and segmental glomerulosclerosis. This histopathological lesion may be caused by a primary podocyte injury (idiopathic FSGS) but is also associated with other pathologies (secondary FSGS). The first-line treatment for idiopathic FSGS with nephrotic syndrome is a prolonged course of corticosteroids. However, steroid resistance or steroid dependence is frequent, and despite intensified immunosuppressive treatment, FSGS can lead to end-stage renal failure...
2017: International Journal of Nephrology and Renovascular Disease
https://www.readbyqxmd.com/read/28539892/the-cross-education-phenomenon-brain-and-beyond
#3
Ashlee M Hendy, Séverine Lamon
Objectives: Unilateral resistance training produces strength gains in the untrained homologous muscle group, an effect termed "cross-education." The observed strength transfer has traditionally been considered a phenomenon of the nervous system, with few studies examining the contribution of factors beyond the brain and spinal cord. In this hypothesis and theory article, we aim to discuss further evidence for structural and functional adaptations occurring within the nervous, muscle, and endocrine systems in response to unilateral resistance training...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28538419/magnetic-resonance-imaging-evaluation-of-the-labrum-to-predict-acetabular-development-in-developmental-dysplasia-of-the-hip-a-strobe-compliant-study
#4
Yasuhiro Shirai, Kenjiro Wakabayashi, Ikuo Wada, Yoshiaki Tsuboi, Myongsu Ha, Takanobu Otsuka
Recently, more attention has been paid to the role of the acetabular labrum. Therefore, we designed a retrospective cohort study of patients with residual hip dysplasia (RHD) who underwent magnetic resonance imaging (MRI). The objective of this study was to investigate an association between the MRI appearance of the labrum before school age and the natural history of RHD.We retrospectively investigated 45 hips of 40 patients who underwent MRI at about 3 and 4 years of age for RHD and were conservatively followed up with until 6 years of age or older...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28529488/endothelial-extracellular-vesicles-promises-and-challenges
#5
REVIEW
Carina Hromada, Severin Mühleder, Johannes Grillari, Heinz Redl, Wolfgang Holnthoner
Extracellular vesicles, including exosomes, microparticles, and apoptotic bodies, are phospholipid bilayer-enclosed vesicles that have once been considered as cell debris lacking biological functions. However, they have recently gained immense interest in the scientific community due to their role in intercellular communication, immunity, tissue regeneration as well as in the onset, and progression of various pathologic conditions. Extracellular vesicles of endothelial origin have been found to play a versatile role in the human body, since they are on the one hand known to contribute to cardiovascular diseases, but on the other hand have also been reported to promote endothelial cell survival...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28529015/targeted-next-generation-sequencing-approach-in-patients-referred-for-silver-russell-syndrome-testing-increases-the-mutation-detection-rate-and-provides-decisive-information-for-clinical-management
#6
Robert Meyer, Lukas Soellner, Matthias Begemann, Severin Dicks, György Fekete, Nils Rahner, Klaus Zerres, Miriam Elbracht, Thomas Eggermann
OBJECTIVE: To investigate the contribution of differential diagnoses to the mutation spectrum of patients referred for Silver-Russell syndrome (SRS) testing. STUDY DESIGN: Forty-seven patients referred for molecular testing for SRS were examined after exclusion of one of the SRS-associated alterations. After clinical classification, a targeted next generation sequencing approach comprising 25 genes associated with other diagnoses or postulated as SRS candidate genes was performed...
May 19, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28527704/anti-madcam-antibody-pf-00547659-for-ulcerative-colitis-turandot-a-phase-2-randomised-double-blind-placebo-controlled-trial
#7
Séverine Vermeire, William J Sandborn, Silvio Danese, Xavier Hébuterne, Bruce A Salzberg, Maria Klopocka, Dino Tarabar, Tomas Vanasek, Miloš Greguš, Paul A Hellstern, Joo Sung Kim, Miles P Sparrow, Kenneth J Gorelick, Michelle Hinz, Alaa Ahmad, Vivek Pradhan, Mina Hassan-Zahraee, Robert Clare, Fabio Cataldi, Walter Reinisch
BACKGROUND: PF-00547659 is a fully human monoclonal antibody that binds to human mucosal addressin cell adhesion molecule-1 (MAdCAM-1) to selectively reduce lymphocyte homing to the intestinal tract. We aimed to assess the efficacy and safety of PF-00547659 in patients with moderate to severe ulcerative colitis. METHODS: This phase 2, randomised, double-blind, placebo-controlled clinical trial recruited patients aged 18-65 years from 105 centres in 21 countries, with a history (≥3 months) of active ulcerative colitis extending more than 15 cm beyond the anal verge (with a total Mayo score ≥6 and a Mayo endoscopic subscore ≥2) who had failed or were intolerant to at least one conventional therapy...
May 17, 2017: Lancet
https://www.readbyqxmd.com/read/28524733/cartilage-engineering-in-reconstructive-surgery-auricular-nasal-and-tracheal-engineering-from-a-surgical-perspective
#8
Paul Severin Wiggenhauser, Jan Thorsten Schantz, Nicole Rotter
This review provides an update on cartilage tissue engineering with particular focus on the head and neck. It is aimed at scientists and clinicians who are interested in tissue engineering and its clinical applicability. Principal tissue engineering strategies are summarized in the first part of this review. In the second part, current clinical approaches to auricular, nasal and tracheal reconstruction are discussed from a surgical perspective. By this approach, the requirements for clinical applicability are outlined and new insight into relevant aims of research is given to accelerate the transfer from bench to bedside...
May 19, 2017: Regenerative Medicine
https://www.readbyqxmd.com/read/28522767/individual-hemoglobin-mass-response-to-normobaric-and-hypobaric-live-high-train-low-a-one-year-crossover-study
#9
Anna Hauser, Severin Troesch, Jonas J Saugy, Laurent Schmitt, Roberto Cejuela-Anta, Raphael Faiss, Thomas Steiner, Neil Robinson, Grégoire P Millet, Jon Peter Wehrlin
PURPOSE: To compare individual hemoglobin mass (Hbmass) changes following a live high-train low (LHTL) altitude training camp under either normobaric hypoxia (NH) or hypobaric hypoxia (HH) conditions in endurance athletes. METHODS: In a crossover design with a one-year washout, 15 male triathletes randomly performed two 18-d LHTL training camps in either HH or NH. All athletes slept at 2250 m and trained at altitudes < 1200 m. Hbmass was measured in duplicate with the optimized carbon monoxide rebreathing method before (pre-) and immediately after (post-) each 18 d training camp...
May 18, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28521238/transcriptomic-approach-for-assessment-of-the-impact-on-microalga-and-macrophyte-of-in-situ-exposure-in-river-sites-contaminated-by-chlor-alkali-plant-effluents
#10
Perrine Dranguet, Claudia Cosio, Séverine Le Faucheur, Rebecca Beauvais-Flück, Aline Freiburghaus, Isabelle A M Worms, Brice Petit, Natacha Civic, Mylène Docquier, Vera I Slaveykova
Water quality degradation is a worldwide problem, but risk evaluation of chronic pollution in-situ is still a challenge. The present study aimed to evaluate the potential of transcriptomic analyses in representative aquatic primary producers to assess the impact of environmental pollution in-situ: the microalga Chlamydomonas reinhardtii and the macrophyte Elodea nuttallii were exposed 2 h in the Babeni Reservoir of the Olt River impacted by chlor-alkali plant effluent release resulting in increased concentrations of Hg and NaCl in receiving water...
May 11, 2017: Water Research
https://www.readbyqxmd.com/read/28520851/infectivity-of-post-kala-azar-dermal-leishmaniasis-patients-to-sand-flies-revisiting-a-proof-of-concept-in-the-context-of-the-kala-azar-elimination-program-in-the-indian-subcontinent
#11
Ricardo Molina, Debashis Ghosh, Eugenia Carrillo, Séverine Monnerat, Caryn Bern, Dinesh Mondal, Jorge Alvar
We compared xenodiagnosis with quantitative polymerase chain reaction in skin biopsies from 3 patients with maculopapular or nodular post-kala-azar dermal leishmaniasis (PKDL). All patients infected sand flies. Parasite loads in skin varied from 1428 to 63 058 parasites per microgram. PKDL detection and treatment are important missing components of the kala-azar elimination program.
May 18, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28518033/distribution-and-quantitative-estimates-of-variant-creutzfeldt-jakob-disease-prions-in-tissues-of-clinical-and-asymptomatic-patients
#12
Jean Y Douet, Caroline Lacroux, Naima Aron, Mark W Head, Séverine Lugan, Cécile Tillier, Alvina Huor, Hervé Cassard, Mark Arnold, Vincent Beringue, James W Ironside, Olivier Andréoletti
In the United-Kingdom, ≈1 of 2,000 persons could be infected with variant Creutzfeldt-Jakob disease (vCJD). Therefore, risk of transmission of vCJD by medical procedures remains a major concern for public health authorities. In this study, we used in vitro amplification of prions by protein misfolding cyclic amplification (PMCA) to estimate distribution and level of the vCJD agent in 21 tissues from 4 patients who died of clinical vCJD and from 1 asymptomatic person with vCJD. PMCA identified major levels of vCJD prions in a range of tissues, including liver, salivary gland, kidney, lung, and bone marrow...
June 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28515126/radiomanganese-pet-detects-changes-in-functional-%C3%AE-cell-mass-in-mouse-models-of-diabetes
#13
Reinier Hernandez, Stephen A Graves, Trillian Gregg, Halena R VanDeusen, Rachel J Fenske, Haley N Wienkes, Christopher G England, Hector F Valdovinos, Justin J Jeffery, Todd E Barnhart, Gregory W Severin, Robert J Nickles, Michelle E Kimple, Matthew J Merrins, Weibo Cai
The noninvasive measurement of functional β-cell mass would be clinically valuable for monitoring the progression of type 1 and type 2 diabetes, as well as the viability of transplanted insulin-producing cells. Although previous work employing magnetic resonance imaging has shown promise for functional β-cell mass determination through voltage-dependent Ca(2+) channel (VDCC)-mediated internalization of Mn(2+), the clinical utility of this technique is limited by the cytotoxic levels of Mn(2+) contrast agent...
May 17, 2017: Diabetes
https://www.readbyqxmd.com/read/28514478/trajectories-of-depressive-symptoms-before-diagnosis-of-dementia-a-28-year-follow-up-study
#14
Archana Singh-Manoux, Aline Dugravot, Agnes Fournier, Jessica Abell, Klaus Ebmeier, Mika Kivimäki, Séverine Sabia
Importance: Neuropsychiatric symptoms, depressive symptoms in particular, are common in patients with dementia but whether depressive symptoms in adulthood increases the risk for dementia remains the subject of debate. Objective: To characterize the trajectory of depressive symptoms over 28 years prior to dementia diagnosis to determine whether depressive symptoms carry risk for dementia. Design, Setting, and Participants: Up to 10 308 persons, aged 35 to 55 years, were recruited to the Whitehall II cohort study in 1985, with the end of follow-up in 2015...
May 17, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28512633/an-ambulatory-electroencephalography-system-for-freely-moving-horses-an-innovating-approach
#15
Hugo Cousillas, Martial Oger, Céline Rochais, Claire Pettoello, Mathilde Ménoret, Séverine Henry, Martine Hausberger
Electroencephalography (EEG) that has been extensively studied in humans presents also a large interest for studies on animal brain processes. However, since the quality of the recordings is altered by muscular activity, most EEG recordings on animals are obtained using invasive methods with deeply implanted electrodes. This requires anesthesia and can thus only be used in laboratory or clinical settings. As EEG is a very useful tool both for detecting brain alterations due to diseases or accidents and to evaluate the arousal and attentional state of the animal, it seemed crucial to develop a tool that would make such recordings possible in the horse's home environment, with a freely moving horse...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28510353/crystal-packing-driven-enrichment-of-atropoisomers
#16
Mona Sharafi, Joseph P Campbell, Sinu C Rajappan, Natavan Dudkina, Danielle L Gray, Toby J Woods, Jianing Li, Severin T Schneebeli
Crystal-packing forces can have a significant impact on the relative stabilities of different molecules and their conformations. The magnitude of such effects is, however, not yet well understood. Herein we show, that crystal packing can completely overrule the relative stabilities of different stereoisomers in solution. Heating of atropoisomers (i.e. "frozen-out" conformational isomers) in solution leads to complex mixtures. In contrast, solid-state heating selectively amplifies minor (<25 mole %) components of these solution-phase mixtures...
May 16, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28510139/development-of-target-delivery-system-based-on-actinomycin-class-drugs-and-recombinant-alpha-fetoprotein
#17
E D Nikolskaya, O A Zhunina, N G Yabbarov, V I Shvets, B I Krugliy, E S Severin
A recombinant alpha-fetoprotein (rAFP) was obtained in the yeast P. pastoris system, and its functional activity was confirmed. A method for producing polymer particles loaded with dactinomycin was developed, and a conjugate of these nanoparticles with rAFP was synthesized. The efficiency of the obtained conjugate on the HeLa, SKOV3, and MG-63 tumor cells and the absence of toxicity on the normal cells was shown. Experiments in vivo demonstrated a significant increase in the antitumor efficacy of the conjugate at a lower general toxicity as compared to the commercially available dactinomycin...
March 2017: Doklady. Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28508954/-perceived-risks-of-food-contaminants
#18
REVIEW
Severine Koch, Mark Lohmann, Astrid Epp, Gaby-Fleur Böl
BACKGROUND: Food contaminants can pose a serious health threat. In order to carry out adequate risk communication measures, the subjective risk perception of the public must be taken into account. In this context, the breadth of the topic and insufficient terminological delimitations from residues and food additives make an elaborate explanation of the topic to consumers indispensable. A representative population survey used language adequate for lay people and a clear definition of contaminants to measure risk perceptions with regard to food contaminants among the general public...
May 16, 2017: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
https://www.readbyqxmd.com/read/28507920/passenger-lymphocyte-syndrome-pls-a-single-center-retrospective-analysis-of-minor-abo-incompatible-liver-transplants
#19
Sévérine de Bruijn, Ester Philipse, Marie Madeleine Couttenye, Bart Bracke, Dirk Ysebaert, Peter Michielsen, Sven Francque, Thomas Vanwolleghem, Anke Verlinden
Background and Aims: Due to the shortage of donor livers, minor ABO-incompatible liver transplantations are commonly performed. Together with the allograft, immunocompetent B-lymphocytes, called passenger lymphocytes, are transplanted. In case of minor ABO-incompatibility, these passenger lymphocytes produce antibodies directed towards the recipient's red blood cells, which causes immune-mediated hemolysis, also known as the passenger lymphocyte syndrome (PLS). Although this is a self-limiting disorder, serious complications can occur, including graft failure...
March 28, 2017: Journal of Clinical and Translational Hepatology
https://www.readbyqxmd.com/read/28507553/virus-bacteria-rice-co-infection-in-africa-field-estimation-reciprocal-effects-molecular-mechanisms-and-evolutionary-implications
#20
Charlotte Tollenaere, Severine Lacombe, Issa Wonni, Mariam Barro, Cyrielle Ndougonna, Fatoumata Gnacko, Drissa Sérémé, Jonathan M Jacobs, Eugénie Hebrard, Sebastien Cunnac, Christophe Brugidou
Simultaneous infection of a single plant by various pathogen species is increasingly recognized as an important modulator of host resistance and a driver of pathogen evolution. Because plants in agro-ecosystems are the target of a multitude of pathogenic microbes, co-infection could be frequent, and consequently important to consider. This is particularly true for rapidly intensifying crops, such as rice in Africa. This study investigated potential interactions between pathogens causing two of the major rice diseases in Africa: the Rice yellow mottle virus (RYMV) and the bacterium Xanthomonas oryzae pathovar oryzicola (Xoc) in order to: 1/ document virus-bacteria co-infection in rice in the field, 2/ explore experimentally their consequences in terms of symptom development and pathogen multiplication, 3/ test the hypothesis of underlying molecular mechanisms of interactions and 4/ explore potential evolutionary consequences...
2017: Frontiers in Plant Science
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