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https://www.readbyqxmd.com/read/28729387/leg-blood-flow-is-impaired-during-small-muscle-mass-exercise-in-copd-patients
#1
Ulrik Winning Iepsen, Gregers Druedal Wibe Munch, Mette Rugbjerg, Camilla Koch Ryrsø, Niels Secher, Ylva Hellsten, Peter Lange, Bente Klarlund Pedersen, Pia Thaning, Stefan P Mortensen
Skeletal muscle blood flow is regulated to match the oxygen demand and dysregulation could contribute to exercise intolerance in patients with COPD. We measured leg hemodynamics and metabolites from vasoactive compounds in muscle interstitial fluid and plasma at rest, during one-legged knee-extensor exercise, and during arterial infusions of sodium nitroprusside (SNP) and acetylcholine (ACh), respectively. Ten patients with moderate to severe COPD and eight age- and sex matched healthy controls were studied...
July 20, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28704392/redifferentiation-of-aged-human-articular-chondrocytes-by-combining-bone-morphogenetic-protein-2-and-melanoma-inhibitory-activity-protein-in-3d-culture
#2
Stephan Payr, Brigitte Tichy, Clemens Atteneder, Marc Michel, Thomas Tiefenboeck, Nikolaus Lang, Sylvia Nuernberger, Stefan Hajdu, Elizabeth Rosado-Balmayor, Stefan Marlovits, Christian Albrecht
Melanoma inhibitory activity (MIA) affects the differentiation to hyaline cartilage and can inhibit the osteogenic potential of bone morphogenetic protein (BMP)-2 in mesenchymal stem cells (MSC). The aim of this study was to investigate if MIA also inhibits the osteogenic potential of BMP-2 in human articular chondrocytes during redifferentiation, which may lead to a higher grade of differentiation without calcification. HAC of four female patients (mean age: 73.75 ±6.98) were seeded into 3D culture for 28 days; after adding the recombinant proteins, four groups were formed (Control, BMP-2, MIA, BMP-2+MIA)...
2017: PloS One
https://www.readbyqxmd.com/read/28691255/impact-of-human-papillomavirus-on-outcome-in-patients-with-oropharyngeal-cancer-treated-with-primary-surgery
#3
Martina A Broglie, Sandro J Stoeckli, Rafael Sauter, Philippe Pasche, Antoine Reinhard, Laurence de Leval, Gerhard F Huber, Thomas F Pezier, Alex Soltermann, Roland Giger, Andreas Arnold, Matthias Dettmer, Andre Arnoux, Martin Müller, Stefan Spreitzer, Florian Lang, Mathieu Lutchmaya, Edouard Stauffer, Vittoria Espeli, Francesco Martucci, Massimo Bongiovanni, Diana Foerbs, Wolfram Jochum
BACKGROUND: Knowledge about prognostic factors in surgically treated patients with oropharyngeal squamous cell carcinoma (SCC) is limited. The purpose of this study was to identify influential factors on survival in a large cohort of patients with surgically treated oropharyngeal SCC. METHODS: Retrospective analysis of survival estimates in patients with surgically treated oropharyngeal SCC using tumoral positivity for human papillomavirus (HPV) and risk-of-death categories according to a study from 2010 as stratification factors...
July 10, 2017: Head & Neck
https://www.readbyqxmd.com/read/28683511/-extracranial-schwannomas-of-the-head-and-neck-clinical-approach-based-on-20-cases
#4
Benedikt Höing, Boris A Stuck, Benjamin Kansy, Timon Hussain, Anke Schlüter, Laura Holtmann, Adrian Ringelstein, Stefan Mattheis, Stephan Lang, Nina Dominas
Background Schwannomas are rare benign tumors originating from the perineural cells forming the myelin layer in the peripheral nervous system (PNS). While well established therapeutic concepts exist for intracranial schwannomas, there is a lack of consistent clinical standards for extracranial schwannomas. Method This retrospective study describes the clinical pathway of 20 patients with histologically proven extracranial schwannomas of the head and neck. The diagnostic and therapeutic strategies for schwannomas are discussed with special emphasis on localization and functional outcome...
July 6, 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28683480/-penetrating-limbokeratoplasty-for-gelatinous-corneal-dystrophy
#5
Stefan J Lang, Daniel Böhringer, Thomas Reinhard
Background Gelatinous corneal dystrophy is a very rare disease in Europe and North America. Patients suffer from pain, photophobia and loss of vision, usually before the age of 20. Transplantation of limbal stem cells was proposed due to the high rate of recurrence after conventional penetrating keratoplasty. We present the results of penetrating limbokeratoplasty, a combined transplantation of cornea and limbal stem cells, in patients with gelatinous corneal dystrophy. Methods We present a series of 7 consecutive eyes with gelatinous corneal dystrophy, which were treated with penetrating limbokeratoplasty-4 eyes of 3 patients had already undergone multiple conventional corneal transplantations...
July 6, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28669754/the-impact-of-gut-hormones-on-the-neural-circuit-of-appetite-and-satiety-a-systematic-review
#6
REVIEW
Davide Zanchi, Antoinette Depoorter, Laura Egloff, Sven Haller, Laura Mählmann, Undine E Lang, Jürgen Drewe, Christoph Beglinger, André Schmidt, Stefan Borgwardt
The brain-gut-axis is an interdependent system affecting neural functions and controlling our eating behaviour. In recent decades, neuroimaging techniques have facilitated its investigation. We systematically looked into functional and neurochemical brain imaging studies investigating how key molecules such as ghrelin, glucagon-like peptide-1 (GLP-1), peptide tyrosine-tyrosine (PYY), cholecystokinin (CCK), leptin, glucose and insulin influence the function of brain regions regulating appetite and satiety. Of the 349 studies published before July 2016 identified in the database search, 40 were included (27 on healthy and 13 on obese subjects)...
June 29, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28666285/-endoscopic-browlift-via-endotine-forehead-device-in-patients-with-facial-palsy
#7
Laura Holtmann, Kerstin Büchsenschütz, Anja Eckstein, Anke Schlüter, Stephan Lang, Stefan Mattheis
Objective Forehead and brows form a critical aesthetic and functional subunit of the face. Chronical pPeripheral paralysis of the facial nerve or its frontal branch may cause brow ptosis and eyelid deformities with a limited field of vision and loss of facial symmetry. Techniques, especially endoscopic methods have evolved significantly. Endotine Forehead Device, an adsorbable device, is a promising tool for brow suspension. Material and Methods 9 patients underwent brow and forehead lift surgery via Endotine Forehead Device...
June 30, 2017: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/28651522/the-role-of-enterococcus-spp-and-multidrug-resistant-bacteria-causing-pyogenic-liver-abscesses
#8
Marcus M Mücke, Johanna Kessel, Victoria T Mücke, Katharina Schwarzkopf, Michael Hogardt, Christoph Stephan, Stefan Zeuzem, Volkhard A J Kempf, Christian M Lange
BACKGROUND: Pyogenic liver abscesses (PLA) remain a significant clinical problem. Unfortunately, little is known about current bacterial susceptibility profiles and the incidence of multidrug resistant organisms (MDROs) causing PLA in Western countries. Yet, this crucial information is pivotal to guide empirical antibiotic therapy. Aim of this study was to provide detailed characteristics of PLA with a special focus on underlying bacterial pathogens and their susceptibility to antibiotics...
June 26, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28635179/changing-trends-in-opioid-use-among-u-s-rheumatoid-arthritis-patients
#9
Jeffrey R Curtis, Fenglong Xie, Christian Smith, Kenneth G Saag, Lang Chen, Timothy Beukelman, Melissa Mannion, Huifeng Yun, Stefan Kertesz
Introduction Opioid prescribing recently has come under intense scrutiny. However, longitudinal patterns of opioid prescription receipt in a population-based cohort of patients who have chronic pain, such as those with rheumatoid arthritis (RA), have not been well characterized. Methods We identified a cohort of RA patients based on 2006-2014 Medicare data and evaluated longitudinal time trends in regular opioid use (>=3 filled prescriptions in each 12 month interval). A separate analysis in 2014 assessed rheumatologist-specific variability in regular opioid prescription for RA patients...
June 21, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28633322/the-detrimental-consequences-of-overestimating-future-health-in-late-life
#10
Jeremy M Hamm, Stefan T Kamin, Judith G Chipperfield, Raymond P Perry, Frieder R Lang
Objectives: Although forecasting a positive future can be adaptive, it may not be when expectations are unmet. Our study examined whether such inaccurate expectations about future health status (overestimation) were maladaptive for older adults who commonly experience late life declines in physical functioning. Method: We analyzed data from the nationally representative German Aging Survey (DEAS; 1996-2011; n = 2,539; age range 60-85 years) using multilevel growth models that assessed the influence of inaccurate health expectations on older adults' physical functioning over a 9-year period...
June 13, 2017: Journals of Gerontology. Series B, Psychological Sciences and Social Sciences
https://www.readbyqxmd.com/read/28629132/effects-of-vitamin-d-supplementation-on-igf-1-and-calcitriol-a-randomized-controlled-trial
#11
Christian Trummer, Verena Schwetz, Marlene Pandis, Martin R Grübler, Nicolas Verheyen, Martin Gaksch, Armin Zittermann, Winfried März, Felix Aberer, Angelika Lang, Claudia Friedl, Andreas Tomaschitz, Barbara Obermayer-Pietsch, Thomas R Pieber, Stefan Pilz, Gerlies Treiber
Increasing evidence suggests a possible interaction between vitamin D and insulin-like growth factor-1 (IGF-1). We aimed to investigate effects of vitamin D supplementation on IGF-1 (primary outcome) and calcitriol (1,25(OH)₂D) concentrations (secondary outcome). This is a post-hoc analysis of the Styrian Vitamin D Hypertension Trial-a single-center, double-blind, randomized, placebo-controlled trial (RCT) conducted from 2011 to 2014 at the Medical University of Graz, Austria. Two-hundred subjects with arterial hypertension and 25(OH)D concentrations <30 ng/mL were randomized to either receive 2800 IU of vitamin D daily or placebo for eight weeks...
June 17, 2017: Nutrients
https://www.readbyqxmd.com/read/28617641/decreasing-stoichiometric-resource-quality-drives-compensatory-feeding-across-trophic-levels-in-tropical-litter-invertebrate-communities
#12
Malte Jochum, Andrew D Barnes, David Ott, Birgit Lang, Bernhard Klarner, Achmad Farajallah, Stefan Scheu, Ulrich Brose
Living organisms are constrained by both resource quantity and quality. Ecological stoichiometry offers important insights into how the elemental composition of resources affects their consumers. If resource quality decreases, consumers can respond by shifting their body stoichiometry, avoiding low-quality resources, or up-regulating feeding rates to maintain the supply of required elements while excreting excess carbon (i.e., compensatory feeding). We analyzed multitrophic consumer body stoichiometry, biomass, and feeding rates along a resource-quality gradient in the litter of tropical forest and rubber and oil-palm plantations...
July 2017: American Naturalist
https://www.readbyqxmd.com/read/28599328/-measurement-of-quality-with-routine-data
#13
Stefan J Lang, Robert Rilk, Alida Friederike Müller, Jan Luebke, Daniel Böhringer, Thomas Reinhard
There is a growing interest in quality measurement in the healthcare sector. Hospitals in Germany are obligated to participate in measures for external quality assurance and they must establish an internal quality management system. In addition to the legal requirements, measurement of quality is also possible with routine data. Suitable sources are the ICD system or unstandardized information from treatment documentation. The selection of suitable quality indicators is necessary to interpret the data. Complications or achievement of surgical objectives can be suitable quality indicators...
July 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28583454/functional-connectivity-in-the-fronto-parietal-network-an-indicator-of-pre-operative-cognitive-function-and-cognitive-outcome-following-surgery-in-patients-with-glioma
#14
Stefan Lang, Ismael Gaxiola-Valdez, Michael Opoku-Darko, Lisa A Partlo, Bradley G Goodyear, John J P Kelly, Paolo Federico
BACKGROUND: Patients with diffuse glioma are known to have impaired cognitive functions pre-operatively. However, the mechanism of these cognitive deficits remains unclear. Resting state functional connectivity in the fronto-parietal network (FPN) is associated with cognitive performance in healthy subjects. For this reason, it was hypothesized that functional connectivity of the FPN would be related to cognitive functioning in patients with glioma. To assess this relationship, pre-operative cognitive status was correlated to patient specific connectivity within the FPN...
June 2, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28580625/mineralocorticoid-receptor-antagonist-pattern-of-use-in-heart-failure-with-reduced-ejection-fraction-findings-from-biostat-chf
#15
João Pedro Ferreira, Patrick Rossignol, Jean-Loup Machu, Abhinav Sharma, Nicolas Girerd, Stefan D Anker, John G Cleland, Kenneth Dickstein, Gerasimos Filippatos, Hans L Hillege, Chim C Lang, Jozine Ter Maaten, Marco Metra, Leong Ng, Piotr Ponikowski, Nilesh J Samani, Dirk J van Veldhuisen, Aeilko H Zwinderman, Adriaan Voors, Faiez Zannad
AIMS: Mineralocorticoid receptor antagonists (MRAs) are recommended (unless contraindicated) to all patients with heart failure with reduced ejection fraction (HFrEF). However, MRAs are still largely underused in routine clinical practice. This study aims to describe the determinants and pattern of use of MRAs in HFrEF. METHODS AND RESULTS: BIOSTAT-CHF is a European multicentre, prospective study which enrolled patients suboptimally treated with angiotensin-converting enzyme inhibitors/angiotensin receptor blockers (ACEi/ARBs) and/or beta-blockers, with the aim of optimizing guideline-based use of these agents...
June 5, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28575914/-critical-incident-reporting-system-in-risk-management-at-the-eye-center-in-freiburg
#16
Jan Luebke, Stefan J Lang, Thomas Reinhard
Background With the help of reporting systems, errors that occur in medical settings can be documented and can lead to an improved workflow. We, herein, present data from our reporting system that we have used since 2012. Materials and Methods All reports since 2012 were evaluated and analyzed regarding the annual rate of reportings, who reported and what reasons were suspected to be causative for the reported errors. Results Over the last five years a mean of 33 reports were given annually. While mostly doctors reported in the first year, the following years showed almost balanced reports from medical assistant staff and doctors...
July 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28574620/rescue-allocation-and-recipient-oriented-extended-allocation-in-kidney-transplantation-influence-of-the-eurotransplant-allocation-system-on-recipient-selection-and-graft-survival-for-initially-non-accepted-organs
#17
Roger Wahba, Barbara Suwelack, Wolfgang Arns, Figen Cakiroglu, Ute Eisenberger, Thorsten Feldkamp, Anita Hansen, Kathrin Ivens, Thomas Klein, Andreas Kribben, Christine Kurschat, Ulrich Lange, Anja Mühlfeld, Martin Nitschke, Stefan Reuter, Kevin Schulte, Richard Viebahn, Rainer Woitas, Martin Hellmich, Dirk L Stippel
Non-accepted kidneys grafts enter the rescue allocation (RA) process to avoid discards. In December 2013 recipient oriented extended allocation (REAL) was introduced to improve transparency. Aim of this study was to evaluate the influence of REAL on recipients' selection and graft function compared to the formerly existing RA as well as to identify factors that influence graft outcome. Therefore, a multicenter study of 10 transplant centers in the same region in Germany was performed. All transplantations after RA or REAL from 1st December 2012 until 31st December 2014 with a follow-up time until 31st December 2015 were analyzed...
June 2, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28549268/modulation-of-hpa-axis-response-to-social-stress-in-schizophrenia-by-childhood-trauma
#18
Claudia Lange, Christian G Huber, Daniela Fröhlich, Stefan Borgwardt, Undine E Lang, Marc Walter
HPA axis functioning plays an important role in the etiology of schizophrenia spectrum disorders (SSD). However, only few studies have examined HPA axis responsivity to psychosocial stress in SSD, and results are heterogeneous. Furthermore, childhood trauma is known to influence psychopathology and treatment outcome in SSD, but studies on the influence of childhood trauma on stress related HPA axis activity are missing. The purpose of this study was to investigate cortisol response to a psychosocial stress challenge in SSD patients, and to examine its association with severity of childhood trauma...
May 20, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28549175/selfing-in-haploid-plants-and-efficacy-of-selection-codon-usage-bias-in-the-model-moss-physcomitrella-patens
#19
Péter Szövényi, Kristian K Ullrich, Stefan A Rensing, Daniel Lang, Nico van Gessel, Hans K Stenøien, Elena Conti, Ralf Reski
Long term reduction in effective population size will lead to major shift in genome evolution. In particular, when effective population size is small, genetic drift becomes dominant over natural selection. The onset of self-fertilization is one evolutionary event considerably reducing effective size of populations. Theory predicts that this reduction should be more dramatic in organisms capable for haploid than for diploid selfing. Although theoretically well-grounded, this assertion received mixed experimental support...
May 26, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28546288/dynamic-changes-in-the-skeletal-muscle-proteome-during-denervation-induced-atrophy
#20
Franziska Lang, Sriram Aravamudhan, Hendrik Nolte, Clara Tuerk, Soraya Hölper, Stefan Müller, Stefan Günther, Bert Blaauw, Thomas Braun, Marcus Krüger
Loss of neuronal stimulation enhances protein breakdown and reduces protein synthesis, causing rapid muscle mass loss. To elucidate the pathophysiological adaptations that occur in atrophying muscles, we used stable isotope labelling and mass spectrometry to accurately quantify protein expression changes during denervation-induced atrophy after sciatic nerve section in the mouse gastrocnemius muscle (GAST). Additionally, mice were fed a SILAC diet containing (13)C6 lysine for four, seven, or eleven days to calculate relative levels of protein synthesis in denervated and control muscles...
May 25, 2017: Disease Models & Mechanisms
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