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https://www.readbyqxmd.com/read/28081584/-mini-open-approach-shows-good-results-in-treatment-of-femoroacetabular-impingement
#1
Stephanie Maria Kirschbaum, Frank Sitterlee, Carsten Perka, Michael Müller
Background Femoroacetabular impingement (FAI) describes a painful, abnormal (bony) contact between the femoral neck and acetabulum, which, if left untreated, contributes to early osteoarthritis (OA) of the hip. Despite its flat learning curve and long operation times, hip arthroscopy has been used increasingly often in recent years in the surgery of femoroacetabular impingement. The mini-open technique (MOT) offers a possible alternative that addresses the abnormal morphological prominence and allows minimally invasive clearance of hip motion...
January 12, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28081481/fatigue-limits-of-different-peek-materials-for-dental-implants
#2
Andreas Dominik Schwitalla, Tycho Zimmermann, Tobias Spintig, Ilona Kallage, Wolf-Dieter Müller
The increasing use of PEEK (poly-ether-ether-ketone) as a substitute for metal implant components has led to the suggestion that it could also be used as an alternative to titanium in the field of dental implants. A major requirement for dental implant materials is their resistance to cyclic loading due to mastication. A special fatigue test was designed to evaluate the elastic behavior and long-term form stability of cylindrically shaped PEEK specimens of 4, 5 and 6mm in diameter, using 11 different PEEK materials of various grades: unfilled, filled with titanium dioxide or barium sulfate powder, reinforced with short carbon fibers or short glass fibers, and reinforced with continuous carbon fibers...
December 23, 2016: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28081458/multistage-bioassociation-of-uranium-onto-an-extremely-halophilic-archaeon-revealed-by-a-unique-combination-of-spectroscopic-and-microscopic-techniques
#3
Miriam Bader, Katharina Müller, Harald Foerstendorf, Björn Drobot, Matthias Schmidt, Niculina Musat, Juliet S Swanson, Donald T Reed, Thorsten Stumpf, Andrea Cherkouk
The interactions of two extremely halophilic archaea with uranium were investigated at high ionic strength as a function of time, pH and uranium concentration. Halobacterium noricense DSM-15987 and Halobacterium sp. putatively noricense, isolated from the Waste Isolation Pilot Plant repository, were used for these investigations. The kinetics of U(VI) bioassociation with both strains showed an atypical multistage behavior, meaning that after an initial phase of U(VI) sorption, an unexpected interim period of U(VI) release was observed, followed by a slow reassociation of uranium with the cells...
December 27, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28081260/comparative-genome-sequencing-reveals-within-host-genetic-changes-in-neisseria-meningitidis-during-invasive-disease
#4
Johanna Klughammer, Marcus Dittrich, Jochen Blom, Vera Mitesser, Ulrich Vogel, Matthias Frosch, Alexander Goesmann, Tobias Müller, Christoph Schoen
Some members of the physiological human microbiome occasionally cause life-threatening disease even in immunocompetent individuals. A prime example of such a commensal pathogen is Neisseria meningitidis, which normally resides in the human nasopharynx but is also a leading cause of sepsis and epidemic meningitis. Using N. meningitidis as model organism, we tested the hypothesis that virulence of commensal pathogens is a consequence of within host evolution and selection of invasive variants due to mutations at contingency genes, a mechanism called phase variation...
2017: PloS One
https://www.readbyqxmd.com/read/28081228/resistance-for-genotoxic-damage-in-mesenchymal-stromal-cells-is-increased-by-hypoxia-but-not-generally-dependent-on-p53-regulated-cell-cycle-arrest
#5
Jana Lützkendorf, Elisabeth Wieduwild, Katrin Nerger, Nina Lambrecht, Hans-Joachim Schmoll, Carsten Müller-Tidow, Lutz Peter Müller
Adult stem cells including multipotent mesenchymal stromal cells (MSC) acquire a high amount of DNA-damage due to their prolonged lifespan. MSC may exert specific mechanisms of resistance to avoid loss of functional activity. We have previously shown that resistance of MSC is associated with an induction of p53 and proliferation arrest upon genotoxic damage. Hypoxia may also contribute to resistance in MSC due to the low oxygen tension in the niche. In this study we characterized the role of p53 and contribution of hypoxia in resistance of MSC to genotoxic damage...
2017: PloS One
https://www.readbyqxmd.com/read/28080202/chemical-probes-targeting-epigenetic-proteins-applications-beyond-oncology
#6
Suzanne Ackloo, Peter J Brown, Susanne Müller
Epigenetic chemical probes are potent, cell-active, small molecule inhibitors and antagonists of specific domains in a protein; they have been indispensable for studying bromodomains and protein methyltransferases. The Structural Genomics Consortium (SGC), comprising scientists from academic and pharmaceutical laboratories, has generated most of the current epigenetic chemical probes. Moreover, the SGC has shared about four thousand aliquots of these probes, which have been used primarily for phenotypic profiling or to validate targets in cell lines or primary patient samples cultured in vitro...
January 12, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/28079944/an-isolable-silicon-dicarbonate-complex-from-carbon-dioxide-activation-with-a-silylone
#7
Alexander Burchert, Shenglai Yao, Robert Müller, Caspar Schattenberg, Yun Xiong, Martin Kaupp, Matthias Driess
The first isolable molecular silicon dicarbonate complex (bis-NHC)Si(CO3 )2 2 (bis-NHC=H2 C[{NC(H)=C(H)N(Dipp)}C:]2 , Dipp=2,6-iPr2 C6 H3 ) was synthesized by facile reaction of the bis-N-heterocyclic carbene stabilized silylone (bis-NHC)Si 1, bearing a zero-valent silicon atom, with carbon dioxide. The monomeric silicon dioxide complex (bis-NHC)SiO2 3 supported by the bis-NHC ligand was proposed as a key intermediate resulting from double oxygenation of the zero-valent silicon atom in 1 by two molar equivalents of CO2 under liberation of CO; its subsequent Lewis acid-base reaction with CO2 leads to 2 which has been fully characterized including an single-crystal X-ray diffraction analysis...
January 12, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28079663/general-anesthesia-and-fabry-disease-a-case-report
#8
Stefan Krüger, Albina Nowak, Torben Christoph Müller
Fabry disease is an inherited X-linked disorder characterized by the absence (in men) or deficiency (in women) in α-galactosidase A activity that causes a progressive accumulation of glycosphingolipids within lysosomes of cells of all the major organ systems. The subsequent organ damage that manifests in childhood and early adulthood presents a widely variable clinical picture of pain, hypertension, and cardiac, renal, nervous system, and lung dysfunction. We present 2 female patients with Fabry disease who required general anesthesia twice for gynecological and trauma surgery, respectively, and discuss their perioperative management based on new information in the medical literature...
January 11, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28079506/response-of-human-rheumatoid-arthritis-osteoblasts-and-osteoclasts-to-adiponectin
#9
Grit Krumbholz, Susann Junker, Florian M P Meier, Markus Rickert, Jürgen Steinmeyer, Stefan Rehart, Uwe Lange, Klaus W Frommer, Georg Schett, Ulf Müller-Ladner, Elena Neumann
OBJECTIVES: Adiponectin is an effector molecule in the pathophysiology of rheumatoid arthritis, e.g. by inducing cytokines and matrix degrading enzymes in synovial fibroblasts. There is growing evidence that adiponectin affects osteoblasts and osteoclasts although the contribution to the aberrant bone metabolism in rheumatoid arthritis is unclear. Therefore, the adiponectin effects on rheumatoid arthritis-derived osteoblasts and osteoclasts were evaluated. METHODS: Adiponectin and its receptors were examined in bone tissue...
January 5, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28079208/controlled-assembly-of-single-colloidal-crystals-using-electro-osmotic-micro-pumps
#10
Ran Niu, Erdal C Oğuz, Hannah Müller, Alexander Reinmüller, Denis Botin, Hartmut Löwen, Thomas Palberg
We assemble charged colloidal spheres at deliberately chosen locations on a charged unstructured glass substrate utilizing ion exchange based electro-osmotic micro-pumps. Using microscopy, a simple scaling theory and Brownian dynamics computer simulations, we systematically explore the control parameters of crystal assembly and the mechanisms through which they depend on the experimental boundary conditions. We demonstrate that crystal quality depends crucially on the assembly distance of the colloids. This is understood as resulting from the competition between inward transport by the electro-osmotic pump flow and the electro-phoretic outward motion of the colloids...
January 12, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28078872/molecular-characterization-and-antibiotic-resistance-of-salmonella-serovars-isolated-in-the-apulia-region-of-italy
#11
R Mirgaldi, A Ballini, A M Dionisi, I Luzzi, G Dipalma, F Inchingolo, D De Vito
During the period January 2013-December 2015, 175 cases of human salmonellosis were reported in the Apulia Region of Italy. The aim of this study was to characterize salmonella strains from the standpoints of serovars prevalence, antimicrobial resistance and clonal origin. The serological typing was performed by agglutination against antisera followed by a multiplex polymerase chain reaction (m-PCR). The obtained results were analyzed following the Kauffmann-White scheme. Susceptibility to antimicrobial agents was tested using the disk diffusion method on Muller-Hinton agar plates...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28078516/dense-gene-physical-maps-of-the-non-model-species-drosophila-subobscura
#12
Dorcas J Orengo, Eva Puerma, Montserrat Papaceit, Carmen Segarra, Montserrat Aguadé
The comparative analysis of genetic and physical maps as well as of whole genome sequences had revealed that in the Drosophila genus, most structural rearrangements occurred within chromosomal elements as a result of paracentric inversions. Genome sequence comparison would seem the best method to estimate rates of chromosomal evolution, but the high-quality reference genomes required for this endeavor are still scanty. Here, we have obtained dense physical maps for Muller elements A, C, and E of Drosophila subobscura, a species with an extensively studied rich and adaptive chromosomal polymorphism...
January 11, 2017: Chromosome Research
https://www.readbyqxmd.com/read/28078432/-evidence-based-recommendations-for-diagnostics-and-treatment-of-gouty-arthritis-in-the-specialist-sector-s2e-guidelines-of-the-german-society-of-rheumatology-in-cooperation-with-the-awmf
#13
REVIEW
U Kiltz, R Alten, M Fleck, K Krüger, B Manger, U Müller-Ladner, H Nüsslein, M Reuss-Borst, A Schwarting, H Schulze-Koops, A K Tausche, J Braun
Due to the increasing prevalence of gout, particularly in old age, the disease is becoming of increasing importance in Germany. Gout is one of the most common forms of recurrent inflammatory arthritis and is induced by the deposition of monosodium urate crystals in synovial fluid and other tissues. The principal goals of therapy in chronic gout are the symptomatic treatment of the acute joint inflammation and the causal treatment of the underlying metabolic cause, the hyperuricemia. Only a consistent and permanent reduction of the serum uric acid level ultimately results in an efficient avoidance of further gout attacks and therefore the prevention of structural damage...
January 11, 2017: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/28078206/infectious-atopic-and-inflammatory-diseases-childhood-adversities-and-familial-aggregation-are-independently-associated-with-the-risk-for-mental-disorders-results-from-a-large-swiss-epidemiological-study
#14
Vladeta Ajdacic-Gross, Aleksandra Aleksandrowicz, Stephanie Rodgers, Margot Mutsch, Anja Tesic, Mario Müller, Wolfram Kawohl, Wulf Rössler, Erich Seifritz, Enrique Castelao, Marie-Pierre F Strippoli, Caroline Vandeleur, Roland von Känel, Rosa Paolicelli, Markus A Landolt, Cornelia Witthauer, Roselind Lieb, Martin Preisig
AIM: To examine the associations between mental disorders and infectious, atopic, inflammatory diseases while adjusting for other risk factors. METHODS: We used data from PsyCoLaus, a large Swiss Population Cohort Study (n = 3720; age range 35-66). Lifetime diagnoses of mental disorders were grouped into the following categories: Neurodevelopmental, anxiety (early and late onset), mood and substance disorders. They were regressed on infectious, atopic and other inflammatory diseases adjusting for sex, educational level, familial aggregation, childhood adversities and traumatic experiences in childhood...
December 22, 2016: World Journal of Psychiatry
https://www.readbyqxmd.com/read/28078051/complete-genome-sequence-of-pseudomonas-brassicacearum-strain-l13-6-12-a-biological-control-agent-from-the-rhizosphere-of-potato
#15
Christin Zachow, Henry Müller, Jana Monk, Gabriele Berg
Pseudomonas brassicacearum strain L13-6-12 is a rhizosphere colonizer of potato, lettuce and sugar beet. Previous studies have shown that this motile, Gram-negative, non-sporulating bacterium is an effective biocontrol agent against different phytopathogens. Here, we announce and describe the complete genome sequence of P. brassicacearum L13-6-12 consisting of a single 6.7 Mb circular chromosome that consists of 5773 protein coding genes and 85 RNA-only encoding genes. Genome analysis revealed genes encoding specialized functions for pathogen suppression, thriving in the rhizosphere and interacting with eukaryotic organisms...
2017: Standards in Genomic Sciences
https://www.readbyqxmd.com/read/28077768/corticosterone-and-timing-of-migratory-departure-in-a-songbird
#16
Cas Eikenaar, Florian Müller, Clara Leutgeb, Sven Hessler, Konstantin Lebus, Philip D Taylor, Heiko Schmaljohann
Bird migration entails replenishing fuel stores at stopover sites. There, individuals make daily decisions whether to resume migration, and must also decide their time of departure. Variation in departure timing affects the total time required to complete a migratory journey, which in turn affects fitness through arrival time at the breeding and wintering grounds. It is well established that stopover departure decisions are based on cues from innate rhythms, intrinsic factors and extrinsic factors. Yet, virtually nothing is known about the physiological mechanism(s) linking these cues to departure decisions...
January 11, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28077644/ultrasensitive-hiv-1-p24-detects-single-infected-cells-and-differences-in-reservoir-induction-by-latency-reversal-agents
#17
Caroline Pereira Bittencourt Passaes, Timothée Bruel, Jérémie Decalf, Annie David, Mathieu Angin, Valerie Monceaux, Michaela Muller-Trutwin, Nicolas Noel, Katia Bourdic, Olivier Lambotte, Matthew L Albert, Darragh Duffy, Olivier Schwartz, Asier Sáez-Cirión
: The existence of HIV reservoirs in infected individuals under cART represents a major obstacle towards cure. Viral reservoirs are assessed by quantification of HIV nucleic acids, which does not discriminate between infectious and defective viruses, or by viral outgrowth assays, which requires large number of cells and long-term cultures. Here, we used an ultrasensitive p24 digital assay, which we report to be 1000 fold more sensitive than classical ELISA in the quantification of HIV-1 Gag p24 production in HIV-infected individuals samples...
January 11, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28077467/gut-microbiota-dependent-trimethylamine-n-oxide-in-acute-coronary-syndromes-a-prognostic-marker-for-incident-cardiovascular-events-beyond-traditional-risk-factors
#18
Xinmin S Li, Slayman Obeid, Roland Klingenberg, Baris Gencer, François Mach, Lorenz Räber, Stephan Windecker, Nicolas Rodondi, David Nanchen, Olivier Muller, Melroy X Miranda, Christian M Matter, Yuping Wu, Lin Li, Zeneng Wang, Hassan S Alamri, Valentin Gogonea, Yoon-Mi Chung, W H Wilson Tang, Stanley L Hazen, Thomas F Lüscher
AIMS: Systemic levels of trimethylamine N-oxide (TMAO), a pro-atherogenic and pro-thrombotic metabolite produced from gut microbiota metabolism of dietary trimethylamine (TMA)-containing nutrients such as choline or carnitine, predict incident cardiovascular event risks in stable primary and secondary prevention subjects. However, the prognostic value of TMAO in the setting of acute coronary syndromes (ACS) remains unknown. METHODS AND RESULTS: We investigated the relationship of TMAO levels with incident cardiovascular risks among sequential patients presenting with ACS in two independent cohorts...
January 11, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28077249/altered-mucosal-expression-of-micrornas-in-pediatric-patients-with-inflammatory-bowel-disease
#19
Nóra Judit Béres, Zoltán Kiss, Zsófia Sztupinszki, Gábor Lendvai, András Arató, Erna Sziksz, Ádám Vannay, Attila J Szabó, Katalin Eszter Müller, Áron Cseh, Kriszta Boros, Gábor Veres
INTRODUCTION: MicroRNAs (miRs) came recently into focus as promising novel research targets offering new insights into the pathogenesis of inflammatory bowel diseases (IBD). AIMS: The aim of our study was to identify a pediatric IBD (pIBD) characteristic miR profile serving as potential Crohn's disease (CD) and ulcerative colitis (UC) specific diagnostic pattern and to further analyze the related target genes. METHODS: Small RNA sequencing was performed on inflamed and intact colonic biopsies of CD, and control patients...
December 27, 2016: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28076855/microrna-126-reduces-blood-retina-barrier-breakdown-via-the-regulation-of-vcam-1-and-bcl2l11-in-ischemic-retinopathy
#20
Xia Bai, Junpeng Luo, Xiaofeng Zhang, Jingjing Han, Zhaoyue Wang, Jingcheng Miao, Yanyan Bai
To evaluate the role of microRNA-126 (miR-126) in maintaining the integrity of the blood-retina barrier (BRB), we established a mouse model of oxygen-induced retinopathy (OIR) and measured the retinal levels of miR-126 using recombinant plasmid pCMV-MIR or pCMV-MIR-126 intravitreal injections. We also detected VCAM-1 and BCL2L11 levels. Retinal vaso-obliteration, VCAM-1 localization on retinal endothelial cells, the blood-retina vascular permeability or albumin leakage in retinas, TUNEL histology, Evans blue assays, or Western blotting for detecting albumin or tight junction levels in the retina was performed...
January 12, 2017: Ophthalmic Research
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