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https://www.readbyqxmd.com/read/28820087/reinstating-mycobacterium-massiliense-and-mycobacterium-bolletii-as-species-of-the-mycobacterium-abscessus-complex
#1
Toidi Adekambi, Mohamed Sassi, Jakko van Ingen, Michel Drancourt
TheMycobacterium abscessus complex is a group of rapidly growing, multiresistant mycobacteria previously divided into three species. Proposal for the union of Mycobacterium bolletii and Mycobacterium massiliense into one subspecies, so-called M. abscessus subsp. massiliense, created much confusion about the routine identification and reporting of M. abscessus clinical isolates for clinicians. Results derived from multigene sequencing unambiguously supported the reinstatement of M. massiliense and M. bolletii as species, culminating in the presence of erm(41)-encoded macrolide resistance in M...
August 18, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28818394/focal-adhesion-kinase-family-is-involved-in-matrix-contraction-by-transdifferentiated-m%C3%A3-ller-cells
#2
Rintaro Tsukahara, Kazuhiko Umazume, Kevin McDonald, Henry J Kaplan, Shigeo Tamiya
Transdifferentiated Müller cells that adopt a fibroblastic/myofibroblastic phenotype have been identified in epiretinal membranes (ERMs) in several ocular disorders, and have been implicated to play a role in the formation and/or the contraction of ERMs. We have previously demonstrated that dasatinib, a dual inhibitor of Src-family kinases and Abl kinase, can prevent matrix contraction by transdifferentiated Müller cells. In this study, we examined molecules involved in matrix contraction downstream of primary dasatinib targets...
August 14, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28817624/ephb4-ephrinb2-therapeutics-in-rhabdomyosarcoma
#3
Matthew E Randolph, Megan M Cleary, Zia Bajwa, Matthew N Svalina, Michael C Young, Atiya Mansoor, Pali Kaur, Carol J Bult, Martin W Goros, Joel E Michalek, Sunny Xiang, James Keck, Valery Krasnoperov, Parkash Gill, Charles Keller
Rhabdomyosarcoma (RMS) is the most common soft tissue sarcoma affecting children and is often diagnosed with concurrent metastases. Unfortunately, few effective therapies have been discovered that improve the long-term survival rate for children with metastatic disease. Here we determined effectiveness of targeting the receptor tyrosine kinase, EphB4, in both alveolar and embryonal RMS either directly through the inhibitory antibody, VasG3, or indirectly by blocking both forward and reverse signaling of EphB4 binding to EphrinB2, cognate ligand of EphB4...
2017: PloS One
https://www.readbyqxmd.com/read/28815526/role-of-intra-and-inter-mitochondrial-membrane-contact-sites-in-yeast-phospholipid-biogenesis
#4
Yasushi Tamura, Toshiya Endo
Eukaryotic cells exhibit intracellular compartments called organelles wherein various specialized enzymatic reactions occur. Despite the specificity of the characteristic functions of organelles, recent studies have shown that distinct organelles physically connect and communicate with each other to maintain the integrity of their functions. In yeast, multiple inter- and intramitochondrial membrane contact sites (MCSs) were identified to date and were proposed to be involved in phospholipid biogenesis. In the present article, we focus on inter- and intra-organellar MCSs involving mitochondria and their tethering factors, such as the ERMES (endoplasmic reticulum (ER)-mitochondria encounter structure) complex and EMC (conserved ER membrane protein complex) between mitochondria and the ER, vCLAMP (vacuole and mitochondria patch) between mitochondria and vacuoles, and the MICOS (mitochondrial contact site) complex between the mitochondrial outer and inner membranes (MOM and MIM)...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28810041/morphologic-and-postoperative-fixation-characteristics-of-the-macular-epiretinal-membrane-in-young-patients-undergoing-surgery
#5
Tian Tian, Chunli Chen, Haiying Jin, Qi Zhang, Yu Xu, Shiyuan Wang, Xiang Zhang, Peiquan Zhao
BACKGROUND AND OBJECTIVE: To describe morphologic characteristics, surgical outcomes, postoperative preferred retinal loci (PRL), and fixation stability of epiretinal membranes (ERMs) in young patients. PATIENTS AND METHODS: This retrospective study analyzed 43 eyes of 41 young patients (age range: 0.8 years to 28 years) with ERMs, which were divided into two groups: secondary ERMs (SERMs; n = 28) and idiopathic ERMs (IERMs; n = 13). All 43 eyes underwent 25-gauge vitrectomy and membrane peeling...
August 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28797910/environmental-evaluation-of-natural-radioactivity-in-soil-near-a-lignite-burning-power-plant-in-turkey
#6
E Gören, Ş Turhan, A Kurnaz, A M K Garad, C Duran, F A Uğur, Z Yeğingil
Natural radionuclides are released into the environment together with fly ash from the coal-burning power plant and cause an increase in the natural radioactivity in environmental samples. The study concerns to the evaluation the influence of Kangal lignite-burning power plant (LBPP) with a power of 457 MWe, which has been in operation since 1989, on natural radionuclide a concentration in surface soil samples around it. Activity concentrations of natural radionuclides ((226)Ra, (232)Th, (40)K and (222)Rn) in the soil samples, and emanation coefficient (EC) and mass (ERM) and surface (ERS) exhalation rate of radon were determined by using a gamma-ray spectrometer with an HPGe detector...
August 1, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28796752/a-new-approach-for-the-determination-of-dose-rate-and-radioactivity-for-detected-gamma-nuclides-using-an-environmental-radiation-monitor-based-on-an-nai-tl-detector
#7
Young-Yong Ji, Chang-Jong Kim, Kyo-Sun Lim, Wanno Lee, Hyon-Sock Chang, Kun Ho Chung
To expand the application of dose rate spectroscopy to the environment, the method using an environmental radiation monitor (ERM) based on a 3' × 3' NaI(Tl) detector was used to perform real-time monitoring of the dose rate and radioactivity for detected gamma nuclides in the ground around an ERM. Full-energy absorption peaks in the energy spectrum for dose rate were first identified to calculate the individual dose rates of Bi, Ac, Tl, and K distributed in the ground through interference correction because of the finite energy resolution of the NaI(Tl) detector used in an ERM...
August 7, 2017: Health Physics
https://www.readbyqxmd.com/read/28795878/effects-of-prisma%C3%A2-skin-dermal-regeneration-device-containing-glycosaminoglycans-on-human-keratinocytes-and-fibroblasts
#8
Raffaella Belvedere, Valentina Bizzarro, Luca Parente, Francesco Petrella, Antonello Petrella
Prisma® Skin is a new pharmaceutical device developed by Mediolanum Farmaceutici S.p.a. It includes alginates, hyaluronic acid and mainly mesoglycan. The latter is a natural glycosaminoglycan preparation containing chondroitin sulfate, dermatan sulfate, heparan sulfate and heparin and it is used in the treatment of vascular disease. Glycosaminoglycans may contribute to the re-epithelialization in the skin wound healing, as components of the extracellular matrix. Here we describe, for the first time, the effects of Prisma® Skin in in vitro cultures of adult epidermal keratinocytes and dermal fibroblasts...
August 10, 2017: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/28793874/picropodophyllin-ppp-is-a-potent-rhabdomyosarcoma-growth-inhibitor-both-in-vitro-and-in-vivo
#9
Maciej Tarnowski, Marta Tkacz, Katarzyna Zgutka, Joanna Bujak, Patrycja Kopytko, Andrzej Pawlik
BACKGROUND: Insulin-like growth factors and insulin are important factors promoting cancer growth and metastasis. The molecules act through IGF1 (IGF1R) and insulin (InsR) receptors. Rhambodmyosarcomas (RMS) overproduce IGF2 - a potent ligand for IGF1R and, at the same time, highly express IGF1 receptor. The purpose of the study was to evaluate possible application of picropodophyllin (PPP) - a potent IGF1R inhibitor. METHODS: In our study we used a number of in vitro assays showing influence of IGF1R blockage on RMS cell lines (both ARMS and ERMS) proliferation, migration, adhesion, cell cycling and signal transduction pathways...
August 9, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28777729/constrained-erm-learning-of-canonical-correlation-analysis-a-least-squares-perspective
#10
Jia Cai, Hongwei Sun
Canonical correlation analysis (CCA) is a useful tool in detecting the latent relationship between two sets of multivariate variables. In theoretical analysis of CCA, a regularization technique is utilized to investigate the consistency of its analysis. This letter addresses the consistency property of CCA from a least squares view. We construct a constrained empirical risk minimization framework of CCA and apply a two-stage randomized Kaczmarz method to solve it. In the first stage, we remove the noise, and in the second stage, we compute the canonical weight vectors...
August 4, 2017: Neural Computation
https://www.readbyqxmd.com/read/28774893/mrtf-transcription-and-ezrin-dependent-plasma-membrane-blebbing-are-required-for-entotic-invasion
#11
Laura Soto Hinojosa, Manuel Holst, Christian Baarlink, Robert Grosse
Entosis is a nonapoptotic form of cell death initiated by actomyosin-dependent homotypic cell-in-cell invasion that can be observed in malignant exudates during tumor progression. We previously demonstrated formin-mediated actin dynamics at the rear of the invading cell as well as nonapoptotic plasma membrane (PM) blebbing in this cellular motile process. Although the contractile actin cortex involved in bleb-driven motility is well characterized, a role for transcriptional regulation in this process has not been studied...
August 3, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28764684/intraoperative-optical-coherence-tomography-assisted-analysis-of-pars-plana-vitrectomy-for-retinal-detachment-in-morning-glory-syndrome-a-case-report
#12
Lyubomyr M Lytvynchuk, Carl G Glittenberg, Siamak Ansari-Shahrezaei, Susanne Binder
BACKGROUND: The pathogenesis of non-rhegmatogenous retinal detachment (non-RRD) associated with morning glory syndrome (MGS) is not established, as well as best surgical approach to treat RD. Our purpose was to analyse intraoperative optical coherence tomography data (iOCT) in all steps of pars plana vitrectomy (PPV) for non-RRD in MGS, in order to follow pathophysiological aspects of the disease and to understand the tissues behaviour during surgical workflow. CASE PRESENTATION: Intraoperative spectral domain optical coherent tomography (iSD-OCT) assisted PPV using Rescan 700 (Carl Zeiss Meditech, Jena, Germany) with epiretinal membrane (ERM) and internal retinal membrane (ILM) peeling, and air endotamponade was performed on the only eye of a 21 years old female with non-RRD associated with MGS...
August 1, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28757198/dissecting-the-immune-pathways-stimulated-following-injection-vaccination-of-rainbow-trout-oncorhynchus-mykiss-against-enteric-redmouth-disease-erm
#13
Eakapol Wangkahart, Christopher J Secombes, Tiehui Wang
Enteric redmouth disease (ERM or yersiniosis) is one of the most important diseases of salmonids and leads to significant economic losses. It is caused by the Gram-negative bacterium Yersinia ruckeri but can be controlled by bacterin vaccination. The first commercial ERM vaccine was licenced in 1976 and is one of the most significant and successful health practices within the aquaculture industry. Although ERM vaccination provides complete protection, knowledge of the host immune response to the vaccine and the molecular mechanisms that underpin the protection elicited is limited...
July 27, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28754689/direct-interaction-of-ezrin-and-aqp2-and-its-role-in-aqp2-trafficking
#14
Wei Li, William W Jin, Kenji Tsuji, Ying Chen, Naohiro Nomura, Limin Su, Naofumi Yui, Julian Arthur, Susanna Cotecchia, Teodor G Păunescu, Dennis Brown, Hua A J Lu
The water channel aquaporin-2 (AQP2) is a major regulator of water homeostasis in response to vasopressin (VP). Dynamic trafficking of AQP2 relies on its close interaction with trafficking machinery proteins and the actin cytoskeleton. Here, we report the identification of ezrin, an actin binding protein from the ezrin/radixin/moesin (ERM) family as an AQP2 interacting protein. Ezrin was first detected in a co-immunoprecipitation (co-IP) complex using an anti-AQP2 antibody by proteomic analysis. Immunofluorescence staining revealed the co-expression of ezrin and AQP2 in collecting duct principal cells, and VP treatment caused redistribution of both proteins to the apical membrane...
July 28, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28746495/epithelial-rests-of-malassez-from-latent-cells-to-active-participation-in-orthodontic-movement
#15
Bianca Silva E Silva, Nathalia Carolina Fernandes Fagundes, Bárbara Catarina Lima Nogueira, José Valladares, David Normando, Rafael Rodrigues Lima
Introduction: The epithelial rests of Malassez (ERM) represent a group of cells in the periodontal ligament classically consisting of latent or quiescent structures associated with pathological processes. However, recent evidence shows that these structures cannot be considered only as cellular debris. The ERM is a major tissue structure, with functions in maintaining the homeostasis of periodontal tissue, including the maintenance of orthodontic movement. Objective: The present literature review aims at presenting the potential functions of ERM, with emphasis on orthodontic movement and the functional structure of the periodontium...
May 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28743651/resistance-to-quinolones-cephalosporins-and-macrolides-in-escherichia-coli-causing-bacteremia-in-peruvian-children
#16
Noemí Palma, Maria J Pons, Cláudia Gomes, Judit Mateu, Maribel Riveros, Wilfredo García, Jan Jacobs, Coralith García, Theresa J Ochoa, Joaquim Ruiz
OBJECTIVE: To characterize the β-lactam, quinolone and macrolide resistance levels and mechanisms in 62 Escherichia coli isolates causing children bacteremia. METHODS: Minimal inhibitory concentration of ciprofloxacin, nalidixic acid (NAL) and azithromycin was determined in presence and absence of Phe-Arg-β-Naphtylamyde. Additionally, the susceptibility levels to other 14 antimicrobial agents was established. Extended Spectrum β-lactamases (ESBLs) were identified, while mutations in gyrA and parC genes, presence of transferable mechanisms of quinolone-resistance (TMQR) and macrolide-resistance (TMMR) was also determined...
July 22, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28736259/molecular-epidemiology-and-antimicrobial-susceptibility-of-clostridium-difficile-isolated-from-the-chinese-people-s-liberation-army-general-hospital-in-china
#17
Rui Wang, Hui Xia Chen, Lin Jian Song, Yue Yun Shen, Yan Ping Luo
Clostridium difficile is a gram-positive, spore-forming obligate anaerobe responsible for antibiotic-associated diarrhea. Its virulence is associated with the production of endotoxins A and B and endospores, which can cause symptoms, such as diarrhea, toxic megacolon and pseudomembranous colitis. Given the increasing elderly population and the well-recognized problem of over-prescribing of broad spectrum antibiotics, it is critical to understand molecular epidemiology and antimicrobial susceptibility in China...
July 20, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28735966/distribution-and-enrichment-of-trace-metals-in-surface-marine-sediments-in-the-gulf-of-pozzuoli-and-off-the-coast-of-the-brownfield-metallurgical-site-of-ilva-of-bagnoli-campania-italy
#18
Marco Trifuoggi, Carlo Donadio, Olga Mangoni, Luciano Ferrara, Francesco Bolinesi, Rosa Anna Nastro, Corrado Stanislao, Maria Toscanesi, Gabriella Di Natale, Michele Arienzo
The distribution of metals in surface sediments of Gulf of Pozzuoli (GoP), embedding the former second Italian largest integrated steelworks of Bagnoli, was studied based on sediment dispersal, quality guidelines (SQGs) and quantitative pollution indices of the respective metals. As, Cd, Hg, Pb, Zn largely exceeded the limits. Hg had a mean of 5.8mg/kg, twentyfold higher the rule, accumulating primarily near Bagnoli site. The mean effective range quotient, m-ERM-Q, revealed a high potential for negative biological effects especially in the area nearby the Bagnoli site...
July 20, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28735056/distribution-of-macrolide-resistance-mechanisms-in-bulgarian-clinical-isolates-of-streptococcus-pyogenes-during-the-years-of-2013-2016
#19
Adile A Muhtarova, Raina T Gergova, Ivan G Mitov
Streptococcus pyogenes, or group A streptococcus (GAS), is the main etiological agent of bacterial tonsillopharyngitis and a common cause of a wide variety of other mild to severe infections. OBJECTIVES: Objectives of the present study was to determine and evaluate the distribution of genetic mechanisms associated with certain phenotypes of macrolide resistance in Bulgarian GAS isolated during the years of 2013-2016. METHODS: All GAS strains were screened for the macrolide resistance genes erm(A), erm(B) and mef(A), using multiplex polymerase chain reaction (PCR)...
July 19, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28723849/comparative-analysis-of-retinal-reattachment-surgery-with-or-without-internal-limiting-membrane-peeling-to-prevent-postoperative-macular-pucker
#20
Matteo Forlini, Purva Date, Luisa Micelli Ferrari, Massimo Lorusso, Gabriella Lecce, Tommaso Verdina, Giovanni Neri, Caterina Benatti, Paolo Rossini, Adriana Bratu, Domenico DʼEliseo, Tommaso Micelli Ferrari, Gian Maria Cavallini
PURPOSE: To determine whether internal limiting membrane (ILM) peeling during pars plana vitrectomy for rhegmatogenous retinal detachment reduces the incidence of epiretinal membrane (ERM) formation. METHODS: In this retrospective study, preoperative, intraoperative, and postoperative data from all eyes undergoing pars plana vitrectomy for rhegmatogenous retinal detachment between January 2007 and December 2013 was analyzed. All cases with at least 1-year of follow-up were included...
July 18, 2017: Retina
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