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https://www.readbyqxmd.com/read/28934278/intercalated-disc-in-failing-hearts-from-patients-with-dilated-cardiomyopathy-its-role-in-the-depressed-left-ventricular-function
#1
Ana Ortega, Estefanía Tarazón, Carolina Gil-Cayuela, María García-Manzanares, Luis Martínez-Dolz, Francisca Lago, José Ramón González-Juanatey, Juan Cinca, Esther Jorge, Manuel Portolés, Esther Roselló-Lletí, Miguel Rivera
Alterations in myocardial structure and reduced cardiomyocyte adhesions have been previously described in dilated cardiomyopathy (DCM). We studied the transcriptome of cell adhesion molecules in these patients and their relationships with left ventricular (LV) function decay. We also visualized the intercalated disc (ID) structure and organization. The transcriptomic profile of 23 explanted LV samples was analyzed using RNA-sequencing (13 DCM, 10 control [CNT]), focusing on cell adhesion genes. Electron microscopy analysis to visualize ID structural differences and immunohistochemistry experiments of ID proteins was also performed...
2017: PloS One
https://www.readbyqxmd.com/read/28934149/oncolytic-reovirus-infection-is-facilitated-by-the-autophagic-machinery
#2
Vera Kemp, Iris J C Dautzenberg, Ronald W Limpens, Diana J M van den Wollenberg, Rob C Hoeben
Mammalian reovirus is a double-stranded RNA virus that selectively infects and lyses transformed cells, making it an attractive oncolytic agent. Despite clinical evidence for anti-tumor activity, its efficacy as a stand-alone therapy remains to be improved. The success of future trials can be greatly influenced by the identification and the regulation of the cellular pathways that are important for reovirus replication and oncolysis. Here, we demonstrate that reovirus induces autophagy in several cell lines, evident from the formation of Atg5-Atg12 complexes, microtubule-associated protein 1 light chain 3 (LC3) lipidation, p62 degradation, the appearance of acidic vesicular organelles, and LC3 puncta...
September 21, 2017: Viruses
https://www.readbyqxmd.com/read/28932588/kras-mutation-positive-mucinous-adenocarcinoma-originating-in-the-thymus
#3
Ichiro Sakanoue, Hiroshi Hamakawa, Daichi Fujimoto, Yukihiro Imai, Kazuhiro Minami, Keisuke Tomii, Yutaka Takahashi
Thymic carcinoma is a rare, aggressive disease with a low 5-year survival rate. The most common histological neoplastic thymic tumor subtype is squamous cell. We describe an interesting case of a 39-year-old woman who presented with mucinous adenocarcinoma that originated in the thymus and was treated via radical resection and venoplasty of the superior vena cava (SVC). Macroscopically, the resected tumor contained a solid region and multiple cysts with abundant mucin. Microscopic examination showed a papillary growth pattern of goblet cells with round nuclei...
August 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28932244/does-microscope-assistance-in-cold-steel-tonsillectomy-reduce-the-risk-of-postoperative-hemorrhage-results-of-a-prospective-cohort-study
#4
Thomas Wilhelm, Jan Wittlinger, Robert Georgiew, Christian Güldner, Stephan Hoch, Afshin Teymoortash, Thomas Günzel, Petar Stankovic
BACKGROUND: Posttonsillectomy hemorrhage (PTH) is the most feared complication. Dissection near the tonsillar capsule under microscopic view (TEmic) could be assumed to decrease PTH compared to traditional tonsillectomy (TEtrad). METHODS: In this study, patients were evaluated with respect to the need for surgical control (R/N: return/no return to theater (RTT): the day of surgery [0] or thereafter [1]). The findings at resection site and pain were measured. RESULTS: 869 patients were included (183 TEmic; 686 TEtrad)...
2017: International Journal of Otolaryngology
https://www.readbyqxmd.com/read/28930831/accessory-spleen-located-in-the-right-parietal-peritoneum-the-first-case-report
#5
Shao-Yan Xu, Ke Sun, Hai-Yang Xie, Lin Zhou, Shu-Sen Zheng, Weilin Wang
RATIONALE: Accessory spleen is a congenital abnormality caused by failure of the splenic anlage to fuse during embryology. The presence of an accessory spleen located in the parietal peritoneum has not been reported so far, and an accessory spleen situated on the right side is extremely rare. In the present study, we describe the first case of an accessory spleen located in the right parietal peritoneum. PATIENTS CONCERNS: A 65-year-old man, presented with pain in his left abdomen for 1 month...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28930474/unveiling-the-self-assembling-behavior-of-5-fluorouracil-and-its-n-n-dimethyl-derivative-a-spectroscopic-and-microscopic-approach
#6
Pavel Banerjee, Devdeep Mukherjee, Tapas Kumar Maiti, Nilmoni Sarkar
At physiological conditions, 5-fluorouracil (5-FU), an anti-cancer drug self-assembles into fibrils by strong hydrogen bonding network while its methylated derivative, 5-fluoro-1,3-dimethyluracil (5-FDMU) do not make fibril due to lack of strong hydrogen bonding motif. In vitro, 5-FU self-assembly is sensitive to physicochemical conditions like the pH and ionic strength of the solution, which tune the strength of the non-covalent driving forces. Here we report a surprising finding that the buffer-which is necessary to control the pH and is typically considered to be inert-also significantly, influences 5-FU self-assembly which indicates an important role of counter-ions in the fibril formation...
September 20, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28930355/conformations-and-membrane-driven-self-organization-of-rodlike-fd-virus-particles-on-freestanding-lipid-membranes
#7
Anastasiia B Petrova, Christoph Herold, Eugene P Petrov
Membrane-mediated interactions and aggregation of colloidal particles adsorbed to responsive elastic membranes are challenging problems relevant for understanding the microscopic organization and dynamics of biological membranes. We experimentally study the behavior of rodlike semiflexible fd virus particles electrostatically adsorbed to freestanding cationic lipid membranes and find that their behavior can be controlled by tuning the membrane charge and ionic strength of the surrounding medium. Three distinct interaction regimes of rodlike virus particles with responsive elastic membranes can be observed...
September 20, 2017: Soft Matter
https://www.readbyqxmd.com/read/28929270/mode-of-treatment-governs-curcumin-response-on-doxorubicin-induced-toxicity-in-cardiomyoblasts
#8
Aditi Jain, Vibha Rani
Doxorubicin (Dox) is an effective anti-cancer drug with severe reported cardiotoxicity. Cardiovascular risks associated with present cancer therapeutics demand urgent attention. There has been a growing interest in naturally occurring compounds to improve the therapeutic index as well as prevent non-tumour tissues from sustaining chemotherapy-induced damages. In the present study, the effects of curcumin, a polyphenol isolated from Curcuma longa and well known for its anti-oxidative, anti-cancerous and anti-inflammatory properties, was studied in relation to the Dox-induced cardiotoxicity...
September 19, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28929068/endoscopic-myringoplasty-versus-microscopic-myringoplasty-in-tubotympanic-csom-a-comparative-study-of-120-cases
#9
A C Jyothi, B H Shrikrishna, N H Kulkarni, Ajay Kumar
Myringoplasty is one of the commonest operations performed on the middle ear. Our aim was to compare the results of endoscopic permeatal myringoplasty with that of conventional myringoplasty by post aural approach using operating microscope. A total of 120 patients having central perforation of tympanic membrane were randomly divided into two equal groups of 60 patients each. In the first group, endoscope was used and in the second group microscope was used to do myringoplasty. Temporalis fascia was used as a graft material...
September 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28928147/disconnecting-structure-and-dynamics-in-glassy-thin-films
#10
Daniel M Sussman, Samuel S Schoenholz, Ekin D Cubuk, Andrea J Liu
Nanometrically thin glassy films depart strikingly from the behavior of their bulk counterparts. We investigate whether the dynamical differences between a bulk and thin film polymeric glass former can be understood by differences in local microscopic structure. Machine learning methods have shown that local structure can serve as the foundation for successful, predictive models of particle rearrangement dynamics in bulk systems. By contrast, in thin glassy films, we find that particles at the center of the film and those near the surface are structurally indistinguishable despite exhibiting very different dynamics...
September 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28927933/azopolymer-photopatterning-for-directional-control-of-angiogenesis
#11
Chiara Fedele, Maria De Gregorio, Paolo A Netti, Silvia Cavalli, Chiara Attanasio
Understanding cellular behavior in response to microenvironmental stimuli is central to tissue engineering. An increasing number of reports emphasize the high sensitivity of cells to the physical characteristics of the surrounding milieu and in particular, topographical cues. In this work, we investigated the influence of dynamic topographic signal presentation on sprout formation and the possibility to obtain a space-time control over sprouting directionality without growth factors, in order to investigate the contribution of just topography in the angiogenic process...
September 16, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28923616/histopathologic-findings-of-potential-kidney-donors-with-asymptomatic-microscopic-hematuria-impact-on-donation
#12
E A Hassan, T Z Ali, A Abdulbaki, I A Ibrahim, H M Almanae, H A Aleid
INTRODUCTION: Isolated microscopic hematuria (IMH) is not uncommon in potential kidney donors. AIM: The aim was to study the kidney biopsy findings of potential kidney donors with IMH and the impact of the histopathologic diagnoses on the decision to accept or decline such donors from kidney donation. METHODS: In this retrospective study, all the potential kidney donors with IMH were identified from the medical records of patients who underwent kidney biopsies between January 2010 and December 2016...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28922487/pcr-based-detection-of-a-fumigatus-and-absence-of-azole-resistance-due-to-tr34-l98h-in-a-french-multicenter-cohort-of-137-patients-with-fungal-rhinosinusitis
#13
Florent Morio, Eric Dannaoui, Taieb Chouaki, Estelle Cateau, Olivier Malard, Pierre Bonfils, Cyril Page, Xavier Dufour, Claire Cottrel, Tamic Erwan, Rose-Anne Lavergne, Patrice Le Pape
BACKGROUND: Fungal rhinosinusitis has a worldwide distribution, comprises distinct clinical entities but is mostly due to Aspergillus among which A. fumigatus plays a major role in European countries. Although, there is accumulating evidence for the emergence of environmentally acquired-azole resistance in A. fumigatus (such as TR34 /L98H) in various clinical settings, there is few data for patients with fungal rhinosinusitis. OBJECTIVES: To investigate the prevalence of A...
September 18, 2017: Mycoses
https://www.readbyqxmd.com/read/28922366/optimizing-information-processing-in-neuronal-networks-beyond-critical-states
#14
Mariana Sacrini Ayres Ferraz, Hiago Lucas Cardeal Melo-Silva, Alexandre Hiroaki Kihara
Critical dynamics have been postulated as an ideal regime for neuronal networks in the brain, considering optimal dynamic range and information processing. Herein, we focused on how information entropy encoded in spatiotemporal activity patterns may vary in critical networks. We employed branching process based models to investigate how entropy can be embedded in spatiotemporal patterns. We determined that the information capacity of critical networks may vary depending on the manipulation of microscopic parameters...
2017: PloS One
https://www.readbyqxmd.com/read/28922323/face-graft-scaffold-production-in-a-rat-model
#15
Jérôme Duisit, Hadrien Amiel, Giuseppe Orlando, Adeline Dedriche, Catherine Behets, Pierre Gianello, Benoît Lengelé
BACKGROUND: As a route towards face bioengineering, our group previously reported the production of a complete scaffold production by perfusion-decellularization of a porcine ear subunit graft and partial recellularization. In order to extend the scaffold to the whole face and to down-scale it, we applied our findings to a rodent hemi-facial graft model. METHODS: After euthanasia, seven full-thickness rat hemi-face grafts were harvested with the CCA and the EJV as pedicle, and cannulated...
September 14, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28921693/liquid-cell-electron-microscopy-of-adsorbed-polymers
#16
Kandula Hima Nagamanasa, Huan Wang, Steve Granick
Individual macromolecules of polystyrene sulfonate and poly(ethylene oxide) are visualized with nanometer resolution using transmission electron microscopy (TEM) imaging of aqueous solutions with and without added salt, trapped in liquid pockets between creased graphene sheets. Successful imaging with 0.3 s per frame is enabled by the sluggish mobility of the adsorbed molecules. This study finds, validating others, that an advantage of this graphene liquid-cell approach is apparently to retard sample degradation from incident electrons, in addition to minimizing background scattering because graphene windows are atomically thin...
September 18, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28921633/spontaneous-mechanical-and-electrical-activities-of-human-calf-musculature-at-rest-assessed-by-repetitive-single-shot-diffusion-weighted-mri-and-simultaneous-surface-electromyography
#17
Martin Schwartz, Günter Steidle, Petros Martirosian, Ander Ramos-Murguialday, Hubert Preißl, Alto Stemmer, Bin Yang, Fritz Schick
PURPOSE: Assessment of temporal and spatial relations between spontaneous mechanical activities in musculature (SMAM) at rest as revealed by diffusion-weighted imaging (DWI) and electrical muscular activities in surface EMG (sEMG). Potential influences of static and radiofrequency magnetic fields on muscular activity on sEMG measurements at rest were examined systematically. METHODS: Series of diffusion-weighted stimulated echo planar imaging were recorded with concurrent sEMG measurements...
September 17, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28920535/evaluation-of-incubation-time-for-microsporum-canis-dermatophyte-cultures
#18
Rebecca Stuntebeck, Karen A Moriello, Maria Verbrugge
Objectives The goal of this study was to determine how frequently Microsporum canis was isolated after 1, 2 and 3 weeks of incubation on dermatophyte culture medium either from untreated cats or cats during treatment. Methods This was an observational retrospective study. Toothbrush fungal culture results were examined from two data pools: untreated cats with suspect skin lesions and weekly fungal cultures from cats being treated for dermatophytosis. Results Results from 13,772 fungal cultures were reviewed and 2876 (20...
September 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28920437/real-time-metabolic-interactions-between-two-bacterial-species-using-a-carbon-based-ph-microsensor-as-a-scanning-electrochemical-microscopy-secm-probe
#19
Vrushali Subhash Joshi, Partha Sarathi Sheet, Nyssa Cullin, Jens Kreth, Dipankar Koley
We have developed a carbon-based, fast-response potentiometric pH microsensor for use as a scanning electrochemical microscopy (SECM) chemical probe to quantitatively map the microbial metabolic exchange between two bacterial species, commensal Streptococcus gordonii and pathogenic Streptococcus mutans. The 25-μm diameter H+ ion-selective microelectrode or pH microprobe showed a Nernstian slope of 59 mV/pH and high selectivity against major ions such Na+, K+, Ca2+ and Mg2+. In addition, the unique conductive membrane composition aided us in performing an amperometric approach curve to position the probe and obtain a high-resolution pH map of the microenvironment produced by the lactate-producing S...
September 18, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28919622/incidence-of-diabetes-insipidus-in-postoperative-period-among-the-patients-undergoing-pituitary-tumour-surgery
#20
M L Kadir, M T Islam, M M Hossain, S Sultana, R Nasrin, M M Hossain
Post operative complications after pituitary tumour surgery vary according to procedure. There are several surgical procedures being done such as transcranial, transsphenoidal microsurgical and transsphenoidal endoscopic approaches. One of the commonest complications is diabetes insipidus (DI). Our main objective was to find out the incidence of diabetes insipidus in post operative period among patients undergoing surgical intervention for pituitary tumour in our institute. The presence of diabetes insipidus in the postoperative period was established by measuring serum Na+ concentration, hourly urine output and urinary specific gravity to find out the incidence of diabetes insipidus in postoperative period in relation to age, gender, tumour diameter, function of tumour (i...
July 2017: Mymensingh Medical Journal: MMJ
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