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https://www.readbyqxmd.com/read/28340410/development-of-fusogenic-glass-surfaces-that-impart-spatiotemporal-control-over-macrophage-fusion-direct-visualization-of-multinucleated-giant-cell-formation
#1
James J Faust, Wayne Christenson, Kyle Doudrick, Robert Ros, Tatiana P Ugarova
Implantation of synthetic material, including vascular grafts, pacemakers, etc. results in the foreign body reaction and the formation of multinucleated giant cells (MGCs) at the exterior surface of the implant. Despite the long-standing premise that fusion of mononucleated macrophages results in the formation of MGCs, to date, no published study has shown fusion in context with living specimens. This is due to the fact that optical-quality glass, which is required for the majority of live imaging techniques, does not promote macrophage fusion...
March 2, 2017: Biomaterials
https://www.readbyqxmd.com/read/28340040/impaired-ability-to-grow-colonies-of-endothelial-stem-cells-could-be-the-mechanism-explaining-the-high-cardiovascular-morbidity-mortality-of-patients-with-depression
#2
Blum Arnon, Pastukh Nina, Zaroura Imad, Jonathan Rotem, Farhat Kamal
Background: Subjects with depression are more prone to develop cardiovascular complications. Severity of depression is associated with higher rates of cardiovascular mortality and morbidity. Several mechanisms were suggested including accelerated atherosclerosis, alteration of the cardiac autonomic response with a decrease in heart rate variability. There is evidence that circulating endothelial progenitor cells (EPCs) are decreased in patients with major depression. Our hypothesis was that patients with depression would have an impaired ability to build colonies of endothelial progenitor cells...
March 9, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/28339741/shear-stress-regulated-mir-27b-controls-pericyte-recruitment-by-repressing-sema6a-and-sema6d
#3
Shemsi Demolli, Anuradha Doddaballapur, Kavi Devraj, Konstantin Stark, Yosif Manavski, Annekathrin Eckart, Christoph Zehendner, Tina Lucas, Thomas Korff, Markus Hecker, Steffen Massberg, Stefan Liebner, David Kaluza, Reinier A Boon, Stefanie Dimmeler
Aims: Vessel maturation involves the recruitment of mural cells such as pericytes and smooth muscle cells. Laminar shear stress is a major trigger for vessel maturation, but the molecular mechanisms by which shear stress affects recruitment of pericytes are unclear. MicroRNAs (miRs) are small non-coding RNAs, which post-transcriptionally control gene expression. The aim of the present study was to unveil the mechanism by which shear stress-regulated microRNAs contribute to vessel maturation...
February 23, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28339476/transgenic-mice-overexpressing-desmocollin-2-dsc2-develop-cardiomyopathy-associated-with-myocardial-inflammation-and-fibrotic-remodeling
#4
Andreas Brodehl, Darrell D Belke, Lauren Garnett, Kristina Martens, Nelly Abdelfatah, Marcela Rodriguez, Catherine Diao, Yong-Xiang Chen, Paul M K Gordon, Anders Nygren, Brenda Gerull
BACKGROUND: Arrhythmogenic cardiomyopathy is an inherited heart muscle disorder leading to ventricular arrhythmias and heart failure, mainly as a result of mutations in cardiac desmosomal genes. Desmosomes are cell-cell junctions mediating adhesion of cardiomyocytes; however, the molecular and cellular mechanisms underlying the disease remain widely unknown. Desmocollin-2 is a desmosomal cadherin serving as an anchor molecule required to reconstitute homeostatic intercellular adhesion with desmoglein-2...
2017: PloS One
https://www.readbyqxmd.com/read/28335437/effect-of-clozapine-on-dna-methylation-in-peripheral-leukocytes-from-patients-with-treatment-resistant-schizophrenia
#5
Makoto Kinoshita, Shusuke Numata, Atsushi Tajima, Hidenaga Yamamori, Yuka Yasuda, Michiko Fujimoto, Shinya Watanabe, Hidehiro Umehara, Shinji Shimodera, Takanobu Nakazawa, Masataka Kikuchi, Akihiro Nakaya, Hitoshi Hashimoto, Issei Imoto, Ryota Hashimoto, Tetsuro Ohmori
Clozapine is an atypical antipsychotic, that is established as the treatment of choice for treatment-resistant schizophrenia (SCZ). To date, no study investigating comprehensive DNA methylation changes in SCZ patients treated with chronic clozapine has been reported. The purpose of the present study is to reveal the effects of clozapine on DNA methylation in treatment-resistant SCZ. We conducted a genome-wide DNA methylation profiling in peripheral leukocytes (485,764 CpG dinucleotides) from treatment-resistant SCZ patients treated with clozapine (n = 21) in a longitudinal study...
March 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28335409/the-formyl-peptide-receptors-diversity-of-ligands-and-mechanism-for-recognition
#6
REVIEW
Hui-Qiong He, Richard D Ye
The formyl peptide receptors (FPRs) are G protein-coupled receptors that transduce chemotactic signals in phagocytes and mediate host-defense as well as inflammatory responses including cell adhesion, directed migration, granule release and superoxide production. In recent years, the cellular distribution and biological functions of FPRs have expanded to include additional roles in homeostasis of organ functions and modulation of inflammation. In a prototype, FPRs recognize peptides containing N-formylated methionine such as those produced in bacteria and mitochondria, thereby serving as pattern recognition receptors...
March 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28335251/nanostructured-tio%C3%A2-surfaces-promote-human-bone-marrow-mesenchymal-stem-cells-differentiation-to-osteoblasts
#7
Marco Vercellino, Gabriele Ceccarelli, Francesco Cristofaro, Martina Balli, Federico Bertoglio, Gianna Bruni, Laura Benedetti, Maria Antonietta Avanzini, Marcello Imbriani, Livia Visai
Micro- and nano-patterning/modification are emerging strategies to improve surfaces properties that may influence critically cells adherence and differentiation. Aim of this work was to study the in vitro biological reactivity of human bone marrow mesenchymal stem cells (hBMSCs) to a nanostructured titanium dioxide (TiO₂) surface in comparison to a coverglass (Glass) in two different culture conditions: with (osteogenic medium (OM)) and without (proliferative medium (PM)) osteogenic factors. To evaluate cell adhesion, hBMSCs phosphorylated focal adhesion kinase (pFAK) foci were analyzed by confocal laser scanning microscopy (CLSM) at 24 h: the TiO₂ surface showed a higher number of pFAK foci with respect to Glass...
June 24, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28334947/protocadherin-19-pcdh19-interacts-with-paraspeckle-protein-nono-to-co-regulate-gene-expression-with-estrogen-receptor-alpha-er%C3%AE
#8
Duyen H Pham, Chuan Tan, Claire C Homan, Kristy Kolc, Mark Corbett, Dale McAninch, Archa Fox, Paul Thomas, Raman Kumar, Jozef Gecz
De novo and inherited mutations of X-chromosome cell adhesion molecule protocadherin 19 (PCDH19) cause frequent, highly variable epilepsy, autism, cognitive decline and behavioural problems syndrome. Intriguingly, hemizygous null males are not affected while heterozygous females are, contradicting established X-chromosome inheritance. The disease mechanism is not known. Cellular mosaicism is the likely driver. We have identified p54nrb/NONO, a multifunctional nuclear paraspeckle protein with known roles in nuclear hormone receptor gene regulation, as a PCDH19 protein interacting partner...
March 17, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28333953/involvement-of-%C3%AE-and-%C3%AE-actin-isoforms-in-actin-cytoskeleton-organization-and-migration-abilities-of-bleb-forming-human-colon-cancer-cells
#9
Aleksandra Simiczyjew, Antonina Joanna Mazur, Ewelina Dratkiewicz, Dorota Nowak
Amoeboid movement is characteristic for rounded cells, which do not form strong adhesion contacts with the ECM and use blebs as migratory protrusions. It is well known that actin is the main component of mature forms of these structures, but the exact role fulfilled by non-muscle actin isoforms β- and γ- in bleb formation and migration of these cells is still not fully understood. The aim of this study was to establish the role of β- and γ-actin in migration of bleb-forming cancer cells using isoform-specific antibodies and expression of fluorescently tagged actin isoforms...
2017: PloS One
https://www.readbyqxmd.com/read/28333572/new-insights-on-complement-inhibitor-cd59-in-mouse-laser-induced-choroidal-neovascularization-mislocalization-after-injury-and-targeted-delivery-for-protein-replacement
#10
Gloriane Schnabolk, Mee Keong Beon, Stephen Tomlinson, Bärbel Rohrer
PURPOSE: The membrane attack complex (MAC) in choriocapillaris (CC) and retinal pigment epithelium (RPE) increase with age and disease (age-related macular degeneration). MAC assembly can be inhibited by CD59, a membrane-bound regulator. Here we further investigated the role of CD59 in murine choroidal neovascularization (CNV), a model involving both CC and RPE, and tested whether CR2-CD59, a soluble targeted form of CD59, provides protection. METHODS: Laser-induced CNV was generated in wild type and CD59a-deficient mice (CD59(-/-))...
March 23, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28333282/anchorless-cell-surface-proteins-function-as-laminin-binding-adhesins-in-lactobacillus-rhamnosus-fsmm22
#11
Ni Putu Desy Aryantini, Daisuke Kondoh, Keita Nishiyama, Yuji Yamamoto, Takao Mukai, I Nengah Sujaya, Tadasu Urashima, Kenji Fukuda
Anchorless cell surface proteins (CSPs) were extracted with 1 M lithium chloride solution from Lactobacillus rhamnosus FSMM22. Loss of the anchorless CSPs resulted in a two-fold decrease in FSMM22 cells bound to a constitutive extracellular matrix glycoprotein, laminin, in vitro. DNA-binding protein HU, glyceraldehyde-3-phosphate dehydrogenase, lactate dehydrogenase, and 30S ribosomal protein S19 (RpsS) were identified by mass spectrometry in the extract as laminin-binding adhesins. Among the four proteins, RpsS was immunohistochemically confirmed to exist on the cell surface...
March 9, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28333279/inhibition-of-pim1-kinase-attenuates-inflammation-induced-pro-labour-mediators-in-human-fetal-membranes-in-vitro
#12
Ratana Lim, Gillian Barker, Martha Lappas
STUDY QUESTION: Does proviral integration site for Moloney murine leukemic virus (PIM)1 kinase play a role in regulating the inflammatory processes of human labour and delivery? SUMMARY ANSWER: PIM1 kinase plays a critical role in fetal membranes in regulating pro-inflammatory and pro-labour mediators. WHAT IS KNOWN ALREADY: Infection and inflammation have strong causal links to preterm delivery by stimulating pro-inflammatory cytokines and collagen degrading enzymes, which can lead to rupture of membranes...
March 9, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28333208/soluble-vcam-1-soluble-icam-1-ratio-is-a-promising-biomarker-for-diagnosing-endometriosis
#13
L Kuessel, R Wenzl, K Proestling, S Balendran, P Pateisky, Yotova, G Yerlikaya, B Streubel, H Husslein
STUDY QUESTION: Do cell adhesion molecules play a role in endometriosis, and can they be used as a biomarker for diagnosing endometriosis? SUMMARY ANSWER: Altered expression of vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) in the endometrium and peritoneum may play a key role in endometriosis and the soluble VCAM-1/soluble ICAM-1 ratio is a promising biomarker. WHAT IS KNOWN ALREADY: Cell adhesion molecules are cell surface proteins that mediate cellular adherence, inflammatory and immune responses, and cancer-related biological processes...
February 23, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28333199/effect-of-butyrate-and-lactobacillus-gg-on-a-butyrate-receptor-and-transporter-during-campylobacter-jejuni-exposure
#14
Gail A M Cresci, Paul C Mayer, Stuart A Thompson
Campylobacter jejuni (C. jejuni) frequently infects humans causing many gastrointestinal symptoms, fever, fatigue and several long-term debilitating diseases. Current treatment for campylobacteriosis includes rehydration and in some cases, antibiotic therapy. Probiotics are used to treat several gastrointestinal diseases. Butyrate is a short-chain fatty acid known to promote intestinal health. Interaction of butyrate with its respective receptor (HCAR2) and transporter (SLC5A8), both expressed in the intestine, is associated with water and electrolyte absorption as well as providing defense against colon cancer and inflammation...
February 23, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28333113/silane-modified-diopside-for-improved-interfacial-adhesion-and-bioactivity-of-composite-scaffolds
#15
Cijun Shuai, Chenying Shuai, Pei Feng, Youwen Yang, Yong Xu, Tian Qin, Sheng Yang, Chengde Gao, Shuping Peng
Diopside (DIOP) was introduced into polyetheretherketone/polyglycolicacid (PEEK/PGA) scaffolds fabricated via selective laser sintering to improve bioactivity. The DIOP surface was then modified using a silane coupling agent, 3-glycidoxypropyltrimethoxysilane (KH570), to reinforce interfacial adhesion. The results showed that the tensile properties and thermal stability of the scaffolds were significantly enhanced. It could be explained that, on the one hand, the hydrophilic group of KH570 formed an organic covalent bond with the hydroxy group on DIOP surface...
March 23, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28333102/biological-effect-of-licochalcone-c-on-the-regulation-of-pi3k-akt-enos-and-nf-%C3%AE%C2%BAb-inos-no-signaling-pathways-in-h9c2-cells-in-response-to-lps-stimulation
#16
Sara Franceschelli, Mirko Pesce, Alessio Ferrone, Daniela Maria Pia Gatta, Antonia Patruno, Maria Anna De Lutiis, José Luis Quiles, Alfredo Grilli, Mario Felaco, Lorenza Speranza
Polyphenols compounds are a group molecules present in many plants. They have antioxidant properties and can also be helpful in the management of sepsis. Licochalcone C (LicoC), a constituent of Glycyrrhiza glabra, has various biological and pharmacological properties. In saying this, the effect of LicoC on the inflammatory response that characterizes septic myocardial dysfunction is poorly understood. The aim of this study was to determine whether LicoC exhibits anti-inflammatory properties on H9c2 cells that are stimulated with lipopolysaccharide...
March 23, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28333042/minocycline-releasing-pmma-system-as-a-space-maintainer-for-staged-bone-reconstructions-in-vitro-antibacterial-cytocompatibility-and-anti-inflammatory-characterization
#17
Tiago Silva, Liliana Grenho, Joana Barros, José Silva, Rosana Pinto, Ana Matos, Bruno Colaço, Helena Fernandes, Ana Bettencourt, Pedro S Gomes
In the present work, it is aimed the development and biological characterization of a poly methyl methacrylate (PMMA)-based minocycline delivery system, to be used as a space maintainer within craniofacial staged regenerative interventions. Developed delivery systems were characterized regarding solid state characteristics and assayed in vitro for anti-bacterial and anti-inflammatory activity, and cytocompatibility with human bone cells. Drug release profile allowed for an initial burst release and a more sustained and controlled release over time, with minimum inhibitory concentrations for the assayed and relevant pathogenic bacteria (i...
March 23, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28332572/xeno-free-culture-of-human-pluripotent-stem-cells-on-oligopeptide-grafted-hydrogels-with-various-molecular-designs
#18
Yen-Ming Chen, Li-Hua Chen, Meng-Pei Li, Hsing-Fen Li, Akon Higuchi, S Suresh Kumar, Qing-Dong Ling, Abdullah A Alarfaj, Murugan A Munusamy, Yung Chang, Giovanni Benelli, Kadarkarai Murugan, Akihiro Umezawa
Establishing cultures of human embryonic (ES) and induced pluripotent (iPS) stem cells in xeno-free conditions is essential for producing clinical-grade cells. Development of cell culture biomaterials for human ES and iPS cells is critical for this purpose. We designed several structures of oligopeptide-grafted poly (vinyl alcohol-co-itaconic acid) hydrogels with optimal elasticity, and prepared them in formations of single chain, single chain with joint segment, dual chain with joint segment, and branched-type chain...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28332498/a-genome-wide-screen-identifies-yap-wbp2-interplay-conferring-growth-advantage-on-human-epidermal-stem-cells
#19
Gernot Walko, Samuel Woodhouse, Angela Oliveira Pisco, Emanuel Rognoni, Kifayathullah Liakath-Ali, Beate M Lichtenberger, Ajay Mishra, Stephanie B Telerman, Priyalakshmi Viswanathan, Meike Logtenberg, Lisa M Renz, Giacomo Donati, Sven R Quist, Fiona M Watt
Individual human epidermal cells differ in their self-renewal ability. To uncover the molecular basis for this heterogeneity, we performed genome-wide pooled RNA interference screens and identified genes conferring a clonal growth advantage on normal and neoplastic (cutaneous squamous cell carcinoma, cSCC) human epidermal cells. The Hippo effector YAP was amongst the top positive growth regulators in both screens. By integrating the Hippo network interactome with our data sets, we identify WW-binding protein 2 (WBP2) as an important co-factor of YAP that enhances YAP/TEAD-mediated gene transcription...
March 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28332486/fabrication-of-the-flexible-highly-ordered-porous-alumina-templates-by-the-combined-nanosphere-lithography-and-anodization
#20
Michal Krupinski, Marcin Perzanowski, Alexey Maximenko, Yevhen Zabila, Marta Marszalek
In this work, we propose a new method for a large-scale production of flexible, periodic alumina arrays with well-ordered pores. We show the incorporation of pre-patterning based on a polystyrene (PS) nanosphere lithography into aluminium anodization process. We prepared ordered monolayers of PS spheres with average diameters of (510 ± 10) nm, and (430 ± 10) nm on a large area (1.5 x 1.5 cm<sup>2</sup>) of the Si substrate. Next, we deposited the 5 μm aluminium layer on arrays of PS nanospheres using the sputtering technique...
March 23, 2017: Nanotechnology
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