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Miriam Rothdiener, Miriam Hegemann, Tatiana Uynuk-Ool, Brandan Walters, Piruntha Papugy, Phong Nguyen, Valentin Claus, Tanja Seeger, Ulrich Stoeckle, Karen A Boehme, Wilhelm K Aicher, Jan P Stegemann, Melanie L Hart, Bodo Kurz, Gerd Klein, Bernd Rolauffs
Using matrix elasticity and cyclic stretch have been investigated for inducing mesenchymal stromal cell (MSC) differentiation towards the smooth muscle cell (SMC) lineage but not in combination. We hypothesized that combining lineage-specific stiffness with cyclic stretch would result in a significantly increased expression of SMC markers, compared to non-stretched controls. First, we generated dense collagen type I sheets by mechanically compressing collagen hydrogels. Atomic force microscopy revealed a nanoscale stiffness range known to support myogenic differentiation...
October 24, 2016: Scientific Reports
F Claire Rind, Stefan Wernitznig, Peter Pölt, Armin Zankel, Daniel Gütl, Julieta Sztarker, Gerd Leitinger
In locusts, two lobula giant movement detector neurons (LGMDs) act as looming object detectors. Their reproducible responses to looming and their ethological significance makes them models for single neuron computation. But there is no comprehensive picture of the neurons that connect directly to each LGMD. We used high-through-put serial block-face scanning-electron-microscopy to reconstruct the network of input-synapses onto the LGMDs over spatial scales ranging from single synapses and small circuits, up to dendritic branches and total excitatory input...
October 24, 2016: Scientific Reports
Stephanie Seneff, Nancy L Swanson, Gerald Koenig, Chen Li
Osteonecrosis of the jaw (ONJ), a rare side effect of bisphosphonate therapy, is a debilitating disorder with a poorly understood etiology. FDA's Adverse Event Reporting System (FAERS) provides the opportunity to investigate this disease. Our goals were to analyze FAERS data to discover possible relationships between ONJ and specific conditions and drugs and then to consult the scientific literature to deduce biological explanations. Our methodology revealed a very strong association between gastroesophageal reflux and bisphosphonate-induced ONJ, suggesting acidosis as a key factor...
2016: Disease Markers
Da Hyun Jung, Hyojin Park
Achalasia and gastroesophageal reflux disease (GERD) are on opposite ends of the spectrum of lower esophageal sphincter dysfunction. Heartburn is the main symptom of GERD. However, heartburn and regurgitation are frequently observed in patients who have achalasia. The diagnosis of achalasia might be delayed because these symptoms are misinterpreted as gastroesophageal reflux. Here, we reviewed the clinical characteristics of patients with the erroneous diagnosis of GERD who actually had untreated achalasia.
October 22, 2016: Journal of Neurogastroenterology and Motility
Aaron J Stonestrom, Sarah C Hsu, Michael T Werner, Gerd A Blobel
Pharmacologic inhibitors of the bromodomain and extra-terminal motif (BET) protein family are in clinical trials for the treatment of hematologic malignancies, yet the functions of individual BET proteins remain largely uncharacterized. We review the molecular roles of BETs in the context of erythropoiesis. Studies in this lineage have provided valuable insights into their mechanisms of action, and helped define the individual and overlapping functions of BET protein family members BRD2, BRD3, and BRD4. These studies have important ramifications for our understanding of the molecular and physiologic roles of BET proteins, and provide a framework for elucidating some of the beneficial and adverse effects of pharmacologic inhibitors...
March 2016: Drug Discovery Today. Technologies
Kirsten Lerum Indrebø, Gerd Karin Natvig, John Roger Andersen
Ostomy-specific adjustment may or may not predict health-related quality of life (HRQoL) and/or overall quality of life (QoL). A cross-sectional study was conducted among patients recruited from the customer registers of 8 surgical suppliers and pharmacies across Norway between November 2010 and March 2011 to determine which of the 34 items of the Ostomy Adjustment Scale (OAS) are the strongest predictors for HRQoL and overall QoL and to determine the HRQoL and overall QoL of individuals with an ostomy compared to a control group representing the general population...
October 2016: Ostomy/wound Management
Antanas Spokevicius, Lynette Taylor, Emma Melder, Kim Van Beveren, Josquin Tibbits, Nicky Creux, Gerd Bossinger
Secondary stem growth in trees and associated wood formation are significant both from biological and commercial perspectives. However, relatively little is known about the molecular control that governs their development. This is in part due to physical, resource and time limitations often associated with the study of secondary growth processes. A number of in vitro techniques have been used involving either plant part or whole plant system in both woody and non-woody plant species. However, questions about their applicability for the study of secondary stem growth processes, the recalcitrance of certain species and labor intensity are often prohibitive for medium to high throughput applications...
October 5, 2016: Journal of Visualized Experiments: JoVE
Derek J Hausenloy, Jose A Barrabes, Hans Erik Bøtker, Sean M Davidson, Fabio Di Lisa, James Downey, Thomas Engstrom, Péter Ferdinandy, Hector A Carbrera-Fuentes, Gerd Heusch, Borja Ibanez, Efstathios K Iliodromitis, Javier Inserte, Robert Jennings, Neena Kalia, Rajesh Kharbanda, Sandrine Lecour, Michael Marber, Tetsuji Miura, Michel Ovize, Miguel A Perez-Pinzon, Hans Michael Piper, Karin Przyklenk, Michael Rahbek Schmidt, Andrew Redington, Marisol Ruiz-Meana, Gemma Vilahur, Jakob Vinten-Johansen, Derek M Yellon, David Garcia-Dorado
To commemorate the auspicious occasion of the 30th anniversary of IPC, leading pioneers in the field of cardioprotection gathered in Barcelona in May 2016 to review and discuss the history of IPC, its evolution to IPost and RIC, myocardial reperfusion injury as a therapeutic target, and future targets and strategies for cardioprotection. This article provides an overview of the major topics discussed at this special meeting and underscores the huge importance and impact, the discovery of IPC has made in the field of cardiovascular research...
November 2016: Basic Research in Cardiology
Markus Reinholz, Hannah Schwaiger, Julian Poetschke, Andreas Epple, Thomas Ruzicka, Tanja Von Braunmühl, Gerd G Gauglitz
BACKGROUND: Currently, different types of treatments for pathological scars are available, however, to date, there is no established method of measurement to objectively assess therapeutic outcome. Treatment success is usually evaluated clinically by the physician and patient. Non-invasive imaging techniques, such as HD-OCT (high-definition optical coherence tomography), may represent a valuable diagnostic tool to objectively measure therapeutic outcome. OBJECTIVES: To compare HD-OCT with ultrasound and subjective evaluation tools, such as questionnaires...
October 20, 2016: European Journal of Dermatology: EJD
Falk Schwendicke, Gerd Göstemeyer
BACKGROUND: Increasing evidence supports selective/incomplete (SE) or stepwise (SW) instead of non-selective/complete tissue removal for deep carious lesions in vital teeth, mainly as pulpal risks are significantly reduced. Our aims were to analyze the proportion of dentists who utilize SE/SW for deep lesions in permanent teeth and to identify barriers and facilitators of utilizing SE/SW. METHODS: We included studies that were original, and reported on the proportion of dentists utilizing SE/SW (quantitative studies), or reported on barriers or facilitators of such utilization (qualitative studies)...
October 19, 2016: Implementation Science: IS
Maxwel Capsy Boga Ribeiro, Amanda Bueno de Araújo, Juverson Alves Terra-Júnior, Eduardo Crema, Nelson Adami Andreollo
Background: Surgical treatment of GERD by Nissen fundoplication is effective and safe, providing good results in the control of the disease. However, some authors have questioned the efficacy of this procedure and few studies on the long-term outcomes are available in the literature, especially in Brazil. Aim: To evaluate patients operated for gastro-esophageal reflux disease, for at least 10 years, by Nissen fundoplication. Methods: Thirty-two patients were interviewed and underwent upper digestive endoscopy, esophageal manometry, 24 h pH monitoring and barium esophagogram, before and after Nissen fundoplication...
July 2016: Arquivos Brasileiros de Cirurgia Digestiva: ABCD, Brazilian Archives of Digestive Surgery
Michael Poteser, Gerd Leitinger, Elisabeth Pritz, Dieter Platzer, Irene Frischauf, Christoph Romanin, Klaus Groschner
Nanometer-spaced appositions between endoplasmic reticulum and plasma membrane (ER-PM junctions) stabilized by membrane-joining protein complexes are critically involved in cellular Ca(2+)-handling and lipid trafficking. ER-PM junctional architecture and plasticity associated with inter-membrane communication are as yet barely understood. Here, we introduce a method to precisely characterize ER-PM junction morphology and dynamics with high temporal resolution and minimal disturbance of junctional intermembrane communication...
October 19, 2016: Scientific Reports
Florentina Sophie Ferstl, Alice Miriam Kitay, Rebecca Marion Trattnig, Abrar Alsaihati, John Peter Geibel
Prolonged exposure to gastric acid is a leading cause of gastroesophageal reflux disease (GERD) and esophagitis. With the ever increasing number of patients showing insensitivity to proton-pump-inhibitor (PPI) therapy with recurrence of symptoms over time, alternative treatment options remain an important issue. Previous studies from our laboratory have shown that a zinc sulfate salt can inhibit HCl generation at the cellular level of the parietal cell. In this paper, we examine the difference between two hydration forms of ZnSO4 (monohydrate H2O and heptahydrate 7H2O) in their entry characteristics into the parietal cell under several physiological conditions associated with acid secretion...
October 19, 2016: Pflügers Archiv: European Journal of Physiology
Sicheng Wu, Shuqi Chen, Yanfang Zhao, Xiuqiang Ma, Rui Wang, Jia He
Background/Aims: Several studies have demonstrated that sleep problems are associated with functional gastrointestinal disorders (FGIDs), such as irritable bowel syndrome (IBS), and functional dyspepsia etc, but the relationship between excessive daytime sleepiness (EDS) and FGIDs has not been systematically studied in general population. This study aimed to explore the relationship between EDS and specific types of FGIDs and the effect of the number of FGIDs on EDS. Methods: A sample of 3600 individuals (aged 18-80 years) was selected from 5 regions in China using a randomized stratified multi-stage sampling method...
October 17, 2016: Journal of Neurogastroenterology and Motility
Jessica Menzies, Jennifer Hughes, Steven Leach, Yvonne Belessis, Usha Krishnan
OBJECTIVES: Growth and feeding problems have been described in children with Esophageal Atresia (EA). Ongoing gastrointestinal and respiratory complications such as Gastroesophageal Reflux Disease (GERD), esophageal dysmotility, strictures and respiratory infections may contribute. The aim of the study was to document the prevalence of malnutrition and feeding difficulties and examine predictive factors which may influence feeding and growth in children attending a multidisciplinary EA clinic in Sydney Australia...
October 13, 2016: Journal of Pediatric Gastroenterology and Nutrition
Archontis Giannakidis, Gerd Melkus, Guang Yang, Grant T Gullberg
Diffusion tensor magnetic resonance imaging (DT-MRI) allows a unique insight into the microstructure of highly-directional tissues. The selection of the most proper distance function for the space of diffusion tensors is crucial in enhancing the clinical application of this imaging modality. Both linear and nonlinear metrics have been proposed in the literature over the years. The debate on the most appropriate DT-MRI distance function is still ongoing. In this paper, we presented a framework to compare the Euclidean, affine-invariant Riemannian and log-Euclidean metrics using actual high-resolution DT-MRI rat heart data...
November 7, 2016: Physics in Medicine and Biology
Michael Bobian, Aron Kandinov, Nour El-Kashlan, Peter F Svider, Adam J Folbe, Ross Mayerhoff, Jean Anderson Eloy, S Naweed Raza
OBJECTIVES/HYPOTHESIS: Despite the increasing role of mobile applications (apps) in patient education, there has been little inquiry evaluating the quality of these resources. Because poor health literacy has been associated with inferior health outcomes, evaluating the quality of patient education materials takes on great importance. Our objective was to employ validated readability tools for the evaluation of gastroesophageal reflux (GERD) mobile apps. METHODS: GERD-specific apps found in the Apple App Store (Apple Inc...
October 18, 2016: Laryngoscope
Ashraf Raslan, Gerd Fabian Volk, Martin Möller, Vincent Stark, Nikolas Eckhardt, Orlando Guntinas-Lichius
OBJECTIVES/HYPOTHESIS: To examine by intraoperative electric stimulation which peripheral facial nerve (FN) branches are functionally connected to which facial muscle functions. STUDY DESIGN: Single-center prospective clinical study. METHODS: Seven patients whose peripheral FN branching was exposed during parotidectomy under FN monitoring received a systematic electrostimulation of each branch starting with 0.1 mA and stepwise increase to 2 mA with a frequency of 3 Hz...
October 18, 2016: Laryngoscope
Jan Klocke, Katharina Kopetschke, Anna-Sophie Grießbach, Valerie Langhans, Jens Y Humrich, Robert Biesen, Duska Dragun, Andreas Radbruch, Gerd-Rüdiger Burmester, Gabriela Riemekasten, Philipp Enghard
Renal infiltration of inflammatory cells contributes to the pathogenesis of Lupus nephritis (LN). Current knowledge on the recruitment mechanisms relies mainly on findings in rodent models. Here, we assess various chemokine pathways in human LN by comparing urinary chemokine concentrations (in 25 patients with acute LN and in 78 lupus patients without active LN) with the expression of corresponding chemokine receptors on urinary leukocytes (in ten acute LN patients). Nine urinary chemokines were significantly elevated in LN patients and correlated with renal disease activity and urinary cell counts; however, their concentrations displayed considerable interindividual heterogeneity...
October 18, 2016: European Journal of Immunology
Hiromi Shiratori, Carmen Feinweber, Claudia Knothe, Jörn Lötsch, Dominique Thomas, Gerd Geisslinger, Michael J Parnham, Eduard Resch
DNA methylation is a major regulatory process of gene transcription, and aberrant DNA methylation is associated with various diseases including cancer. Many compounds have been reported to modify DNA methylation states. Despite increasing interest in the clinical application of drugs with epigenetic effects, and the use of diagnostic markers for genome-wide hypomethylation in cancer, large-scale screening systems to measure the effects of drugs on DNA methylation are limited. In this study, we improved the previously established fluorescence polarization-based global DNA methylation assay so that it is more suitable for application to human genomic DNA...
2016: PloS One
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