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Neurite out growth

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https://www.readbyqxmd.com/read/29207108/integrated-analysis-of-gene-expression-and-copy-number-variations-in-met-proto%C3%A2-oncogene%C3%A2-transformed-human-primary-osteoblasts
#1
Ru-Jiang Jia, Chun-Gen Lan, Xiu-Chao Wang, Chun-Tao Gao
The aim of the present study was to screen the potential osteosarcoma (OS)‑associated genes and to obtain additional insight into the pathogenesis of OS. Transcriptional profile (ID: GSE28256) and copy number variations (CNV) profile were downloaded from Gene Expression Omnibus database. Differentially expressed genes (DEGs) between MET proto‑oncogene‑transformed human primary osteoblast (MET‑HOB) samples and the control samples were identified using the Linear Models for Microarray Data package. Subsequently, CNV areas and CNVs were identified using cut‑off criterion of >30%‑overlap within the cases using detect_cnv...
November 22, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29197740/gene-set-enrichment-analysis-and-expression-pattern-exploration-implicate-an-involvement-of-neurodevelopmental-processes-in-bipolar-disorder
#2
Thomas W Mühleisen, Céline S Reinbold, Andreas J Forstner, Lilia I Abramova, Martin Alda, Gulja Babadjanova, Michael Bauer, Paul Brennan, Alexander Chuchalin, Cristiana Cruceanu, Piotr M Czerski, Franziska Degenhardt, Sascha B Fischer, Janice M Fullerton, Scott D Gordon, Maria Grigoroiu-Serbanescu, Paul Grof, Joanna Hauser, Martin Hautzinger, Stefan Herms, Per Hoffmann, Jutta Kammerer-Ciernioch, Elza Khusnutdinova, Manolis Kogevinas, Valery Krasnov, André Lacour, Catherine Laprise, Markus Leber, Jolanta Lissowska, Susanne Lucae, Anna Maaser, Wolfgang Maier, Nicholas G Martin, Manuel Mattheisen, Fermin Mayoral, James D McKay, Sarah E Medland, Philip B Mitchell, Susanne Moebus, Grant W Montgomery, Bertram Müller-Myhsok, Lilijana Oruc, Galina Pantelejeva, Andrea Pfennig, Lejla Pojskic, Alexey Polonikov, Andreas Reif, Fabio Rivas, Guy A Rouleau, Lorena M Schenk, Peter R Schofield, Markus Schwarz, Fabian Streit, Jana Strohmaier, Neonila Szeszenia-Dabrowska, Alexander S Tiganov, Jens Treutlein, Gustavo Turecki, Helmut Vedder, Stephanie H Witt, Thomas G Schulze, Marcella Rietschel, Markus M Nöthen, Sven Cichon
BACKGROUND: Bipolar disorder (BD) is a common and highly heritable disorder of mood. Genome-wide association studies (GWAS) have identified several independent susceptibility loci. In order to extract more biological information from GWAS data, multi-locus approaches represent powerful tools since they utilize knowledge about biological processes to integrate functional sets of genes at strongly to moderately associated loci. METHODS: We conducted gene set enrichment analyses (GSEA) using 2...
November 14, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29183014/mechanosensitivity-of-embryonic-neurites-promotes-their-directional-extension-and-schwann-cells-progenitors-migration
#3
Gonzalo Rosso, Peter Young, Victor Shahin
BACKGROUND/AIMS: Migration of Schwann cells (SCs) progenitors and neurite outgrowth from embryonic dorsal root ganglions (DRGs) are two central events during the development of the peripheral nervous system (PNS). How these two enthralling events preceding myelination are promoted is of great relevance from basic research and clinical aspects alike. Recent evidence demonstrates that biophysical cues (extracellular matrix stiffness) and biochemical signaling act in concert to regulate PNS myelination...
November 29, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28659008/pain-mechanisms-in-peritoneal-diseases-might-be-partially-regulated-by-estrogen
#4
Clara Börner, Claudia Scheerer, Rene Buschow, Vito Chiantera, Jalid Sehouli, Sylvia Mechsner
To identify factors influencing the differential pain pathogenesis in peritoneal endometriosis (pEM) and peritoneal carcinomatosis in ovarian cancer (pOC), we undertook an experimental study. Tissue samples of 18 patients with pEM, 15 patients with pOC, and 15 unaffected peritoneums as controls were collected during laparoscopy or laparotomy. Immunohistochemical stainings were conducted to identify nerve fibers and neurotrophins in the tissue samples. Additionally, 23 pEM fluids, 25 pOC ascites fluids, and 20 peritoneal fluids of patients with myoma uteri as controls were collected...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28654038/rewiring-neuronal-circuits-a-new-method-for-fast-neurite-extension-and-functional-neuronal-connection
#5
Margaret H Magdesian, Madeleine Anthonisen, G Monserratt Lopez-Ayon, Xue Ying Chua, Matthew Rigby, Peter Grütter
Brain and spinal cord injury may lead to permanent disability and death because it is still not possible to regenerate neurons over long distances and accurately reconnect them with an appropriate target. Here a procedure is described to rapidly initiate, elongate, and precisely connect new functional neuronal circuits over long distances. The extension rates achieved reach over 1.2 mm/h, 30-60 times faster than the in vivo rates of the fastest growing axons from the peripheral nervous system (0.02 to 0.04 mm/h)(28) and 10 times faster than previously reported for the same neuronal type at an earlier stage of development(4)...
June 13, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28628994/tio2-surfaces-support-neuron-growth-during-electric-field-stimulation
#6
M Canillas, B Moreno, E Chinarro, A M Rajnicek
TiO2 is proposed here for the first time as a substrate for neural prostheses that involve electrical stimulation. Several characteristics make TiO2 an attractive material: Its electrochemical behaviour as an insulator prevents surface changes during stimulation. Hydration creates -OH groups at the surface, which aid cell adhesion by interaction with inorganic ions and macromolecules in cell membranes. Its ability to neutralize reactive oxygen and nitrogen species that trigger inflammatory processes confers biocompatibility properties in dark conditions...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28543060/nogo-b-is-the-major-form-of-nogo-at-the-floor-plate-and-likely-mediates-crossing-of-commissural-axons-in-the-mouse-spinal-cord
#7
Liqing Wang, Chao Yu, Jun Wang, Peggy Leung, Ding Ma, Hui Zhao, Jeremy S H Taylor, Sun-On Chan
Using Nogo antibodies with defined binding specificity, Nogo-B, but not Nogo-A, was localized on radial glia in the floor plate of mouse embryos. The presence of Nogo-B was confirmed in Nogo-A knockout mice. In explant cultures of embryonic day (E) 11 and E12 spinal cord, blocking of NgR function with antagonist peptide NEP1-40 reduced the crossing of newly arrived commissural axons, resulting in an accumulation of growth cones in the floor plate. Analysis of growth cone morphology demonstrated an increase in size of growth cones in the floor plate after peptide treatment, which was not detected in axons growing toward the midline...
May 22, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28408800/rutin-protects-against-neuronal-damage-in-vitro-and-ameliorates-doxorubicin-induced-memory-deficits-in-vivo-in-wistar-rats
#8
Grandhi Venkata Ramalingayya, Sri Pragnya Cheruku, Pawan G Nayak, Anoop Kishore, Rekha Shenoy, Chamallamudi Mallikarjuna Rao, Nandakumar Krishnadas
Doxorubicin (DOX) is the most widely used broad-spectrum anticancer agent, either alone or in combination, for most cancers including breast cancer. Long-term use of chemotherapeutic agents to treat breast cancer patients results in cognitive complications with a negative impact on survivors' quality of life. The study objective was to evaluate rutin (RUT) for its neuroprotective effect against DOX in human neuroblastoma (IMR32) cells in vitro and study its potential to ameliorate DOX-induced cognitive dysfunction in Wistar rats...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28347639/neurite-outgrowth-in-cultured-mouse-pelvic-ganglia-effects-of-neurotrophins-and-bladder-tissue
#9
Mari Ekman, Baoyi Zhu, Karl Swärd, Bengt Uvelius
Neurotrophic factors regulate survival and growth of neurons. The urinary bladder is innervated via both sympathetic and parasympathetic neurons located in the major pelvic ganglion. The aim of the present study was to characterize the effects of the neurotrophins nerve growth factor (NGF), brain derived neurotrophic factor (BDNF) and neurotrophin 3 (NT-3) on the sprouting rate of sympathetic and parasympathetic neurites from the female mouse ganglion. The pelvic ganglion was dissected out and attached to a petri dish and cultured in vitro...
March 18, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28322231/alix-is-required-during-development-for-normal-growth-of-the-mouse-brain
#10
Marine H Laporte, Christine Chatellard, Victoria Vauchez, Fiona J Hemming, Jean-Christophe Deloulme, Frédérique Vossier, Béatrice Blot, Sandrine Fraboulet, Rémy Sadoul
Alix (ALG-2 interacting protein X) drives deformation and fission of endosomal and cell surface membranes and thereby intervenes in diverse biological processes including cell proliferation and apoptosis. Using embryonic fibroblasts of Alix knock-out mice, we recently demonstrated that Alix is required for clathrin-independent endocytosis. Here we show that mice lacking Alix suffer from severe reduction in the volume of the brain which affects equally all regions examined. The cerebral cortex of adult animals shows normal layering but is reduced in both medio-lateral length and thickness...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28188849/endocytosis-contributes-to-bmp2-induced-smad-signalling-and-neuronal-growth
#11
Shane V Hegarty, Aideen M Sullivan, Gerard W O'Keeffe
Bone morphogenetic protein 2 (BMP2) is a neurotrophic factor which induces the growth of midbrain dopaminergic (DA) neurons in vitro and in vivo, and its neurotrophic effects have been shown to be dependent on activation of BMP receptors (BMPRs) and Smad 1/5/8 signalling. However, the precise intracellular cascades that regulate BMP2-BMPR-Smad-signalling-induced neurite growth remain unknown. Endocytosis has been shown to regulate Smad 1/5/8 signalling and differentiation induced by BMPs. However, these studies were carried out in non-neural cells...
March 16, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28075461/resistance-of-interleukin-6-to-the-extracellular-inhibitory-environment-promotes-axonal-regeneration-and-functional-recovery-following-spinal-cord-injury
#12
Gang Yang, Wen-Yuan Tang
Interleukin-6 (IL)-6 was originally discovered as a factor that contributes to the secondary pathological and inflammatory response in the central nervous system (CNS) following injury. However, accumulating evidence suggests that IL-6 is also involved in functional and structural recovery following CNS injury by promoting axonal sprou-ting. This suggests a potential dual role of IL-6 in CNS injury. However, the definitive function of IL-6 in neural injury and the corresponding underlying mechanisms are still topics of controversy...
February 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28030818/asic1-promotes-differentiation-of-neuroblastoma-by-negatively-regulating-notch-signaling-pathway
#13
Mingli Liu, Koichi Inoue, Tiandong Leng, An Zhou, Shanchun Guo, Zhi-Gang Xiong
In neurons, up-regulation of Notch activity either inhibits neurite extension or causes retraction of neurites. Conversely, inhibition of Notch1 facilitates neurite extension. Acid-sensing ion channels (ASICs) are a family of proton-gated cation channels, which play critical roles in synaptic plasticity, learning and memory and spine morphogenesis. Our pilot proteomics data from ASIC1a knock out mice implicated that ASIC1a may play a role in regulating Notch signaling, therefore, we explored whether or not ASIC1a regulates neurite growth during neuronal development through Notch signaling...
January 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28013393/ngf-anti-vegf-combined-exposure-protects-rcs-retinal-cells-and-photoreceptors-that-underwent-a-local-worsening-of-inflammation
#14
Maria Luisa Rocco, Bijorn Omar Balzamino, Graziana Esposito, Carla Petrella, Luigi Aloe, Alessandra Micera
PURPOSE: Our previous study highlighted the potential nerve growth factor (NGF) effect on damaged photoreceptors from a rat model of spontaneous Retinitis Pigmentosa (RP). Herein, we tested the combined NGF/anti-vascular endothelial growth factor (αVEGF) effect on cultured retinal cells isolated from Royal College of Surgeons (RCS) rats receiving an intravitreal VEGF injection (iv-VEGF) to exacerbate retinal inflammation/neovascularization. METHODS: RCS (n = 75) rats were equally grouped as untreated (n = 25), iv-saline (single saline intravitreal injection; n = 25) and iv-VEGF (single VEGF intravitreal injection; n = 25)...
March 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28011153/wnt-signaling-promotes-axonal-regeneration-following-optic-nerve-injury-in-the-mouse
#15
Amit K Patel, Kevin K Park, Abigail S Hackam
Adult mammalian CNS axons generally do not regenerate, creating an obstacle to effective repair and recovery after neuronal injury. The canonical Wnt/β-catenin signaling pathway is an essential signal transduction cascade that regulates axon growth and neurite extension in the developing mammalian embryo. In this study, we investigated whether a Wnt/β-catenin signaling activator could be repurposed to induce regeneration in the adult CNS after axonal injury. We used a retinal ganglion cell (RGC) axon crush injury model in a transgenic Wnt reporter mouse, and intravitreal injections were used to deliver Wnt3a or saline to the RGC cell bodies within the retina...
February 20, 2017: Neuroscience
https://www.readbyqxmd.com/read/27909687/morphogenesis-of-human-embryonic-stem-cells-into-mature-neurons-under-in-vitro-culture-conditions
#16
Geeta Shroff
AIM: To describe the morphogenesis of different neuronal cells from the human embryonic stem cell (hESC) line, SCT-N, under in vitro culture conditions. METHODS: The directed neuronal cell line was produced from a single, spare, pre-implantation stage fertilized ovum that was obtained during a natural in vitro fertilization process. The hESCs were cultured and maintained as per our proprietary in-house technology in a Good Manufacturing Practice, Good Laboratory Practice and Good Tissue Practice compliant laboratory...
November 20, 2016: World Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27587351/enhanced-proliferation-of-pc12-neural-cells-on-untreated-nanotextured-glass-coverslips
#17
Muhymin Islam, Rahul Atmaramani, Siddhartha Mukherjee, Santaneel Ghosh, Samir M Iqbal
Traumatic injury to the central nervous system is a significant health problem. There is no effective treatment available partly because of the complexity of the system. Implementation of multifunctional micro- and nano-device based combinatorial therapeutics can provide biocompatible and tunable approaches to perform on-demand release of specific drugs. This can help the damaged cells to improve neuronal survival, regeneration of axons, and their reconnection to appropriate targets. Nano-topological features induced rapid cell growth is especially important towards the design of effective platforms to facilitate damaged neural circuit reconstruction...
October 14, 2016: Nanotechnology
https://www.readbyqxmd.com/read/27549107/in-vitro-bioassay-model-for-screening-non-viral-neurotrophic-factor-gene-delivery-systems-for-glaucoma-treatment
#18
Ding Wen Chen, Marianna Foldvari
The feasibility of a two-layer contact-independent 3D neuronal co-culture model to test the bioactivity of brain-derived neurotrophic factor (BDNF), produced by non-virally transfected A7 astrocytes (trA7), on neurite growth in a second cell population of SH-SY5Y (CRL-2266) neuroblastoma cells with (oxSH-SY5Y) or without oxidative damage (SH-SY5Y) was evaluated. Transfection of A7 astrocytes was carried out with BDNF-encoding plasmid using K2® nanoparticle gene delivery system (K2-NPs). The physicochemical characteristics of K2-NPs, transfection efficiency, and BDNF production were evaluated using dynamic light scattering, flow cytometry, and enzyme-linked immunosorbent assay (ELISA), respectively...
December 2016: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/27405868/non-centrosomal-nucleation-mediated-by-augmin-organizes-microtubules-in-post-mitotic-neurons-and-controls-axonal-microtubule-polarity
#19
Carlos Sánchez-Huertas, Francisco Freixo, Ricardo Viais, Cristina Lacasa, Eduardo Soriano, Jens Lüders
Neurons display a highly polarized microtubule network that mediates trafficking throughout the extensive cytoplasm and is crucial for neuronal differentiation and function. In newborn migrating neurons, the microtubule network is organized by the centrosome. During neuron maturation, however, the centrosome gradually loses this activity, and how microtubules are organized in more mature neurons remains poorly understood. Here, we demonstrate that microtubule organization in post-mitotic neurons strongly depends on non-centrosomal nucleation mediated by augmin and by the nucleator γTuRC...
2016: Nature Communications
https://www.readbyqxmd.com/read/27376413/use-of-conducting-polymers-to-facilitate-neurite-branching-in-schizophrenia-related-neuronal-development
#20
Elise M Stewart, Zhixiang Wu, Xu Feng Huang, Robert M I Kapsa, Gordon G Wallace
Schizophrenia (SCZ) is a debilitating mental disorder which results in high healthcare and loss of productivity costs to society. This disease remains poorly understood, however there is increasing evidence suggesting a role for oxidative damage in the disease etiology. We aimed to examine the effect of the conducting polymer polypyrrole on the growth and morphology of both wildtype and neuregulin-1 knock out (NRG-1 +/-) explant cells. Polypyrrole is an organic conducting polymer known to be cytocompatible and capable of acting as a platform for effective stimulation of neurons...
July 19, 2016: Biomaterials Science
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