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https://www.readbyqxmd.com/read/29343707/sensory-neuronal-p2rx4-receptors-controls-bdnf-signaling-in-inflammatory-pain
#1
Sarah Lalisse, Jennifer Hua, Manon Lenoir, Nathalie Linck, François Rassendren, Lauriane Ulmann
Chronic inflammatory and neuropathic pains are major public health concerns. Potential therapeutic targets include the ATP-gated purinergic receptors (P2RX) that contribute to these pathological types of pain in several different cell types. The purinergic receptors P2RX2 and P2RX3 are expressed by a specific subset of dorsal root ganglion neurons and directly shape pain processing by primary afferents. In contrast the P2RX4 and P2RX7 are mostly expressed in myeloid cells, where activation of these receptors triggers the release of various pro-inflammatory molecules...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29341217/acetoacetate-and-ethyl-acetoacetate-as-novel-inhibitors-of-bacterial-biofilm
#2
S M Horne, M Schroeder, J Murphy, B M Prüβ
Acetoacetate (AAA) was identified as a biofilm inhibitor in a previous study, where the effect of 190 carbon and nitrogen sources on biofilm amounts by Escherichia coli O157:H7 was determined. With this study, we tested the effect of AAA on growth and biofilm amounts of Cronobacter sakazakii, Serratia marcescens, and Yersinia enterocolitica. AAA reduced growth and biofilm amounts of the three pathogens, albeit at rather high concentrations of 10 to 35 mg ml-1 . AAA at a concentration of 5 mg ml-1 reduced Y...
January 16, 2018: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/29335509/salient-type-1-interleukin-1-receptor-expression-in-peripheral-non-immune-cells
#3
Anping Song, Ling Zhu, Gowthami Gorantla, Olimpia Berdysz, Stephanie A Amici, Mireia Guerau-de-Arellano, Kathryn M Madalena, Jessica K Lerch, Xiaoyu Liu, Ning Quan
Interleukin 1 is a pleiotropic cytokine that mediates diverse functions through its receptor, type I interleukin 1 receptor (IL-1R1). Most previous studies have focused on the expression and function of IL-1R1 in immune cells. Here we performed a comprehensive mapping of IL-1R1 distribution in multiple peripheral tissues using our IL-1R1 reporter (IL-1R1GR/GR) mice. This method yielded the highest sensitivity of in situ detection of IL-1R1 mRNA and protein. Besides validating previously reported IL-1R1 expression in the endocrine tissues including pituitary and pancreas, our results refuted previously reported exclusive IL-1R1 expression in neurons of the spinal cord dorsal horn and dorsal root ganglia (DRG)...
January 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29330810/correlation-of-glioma-proliferation-and-hypoxia-by-luciferase-magnetic-resonance-and-positron-emission-tomography-imaging
#4
Michael Karsy, David L Gillespie, Kevin P Horn, Lance D Burrell, Jeffery T Yap, Randy L Jensen
Gliomas are the most common type of primary, malignant brain tumor and significantly impact patients, who have a median survival of ~1 year depending on mutational background. Novel imaging modalities such as luciferase bioluminescence, micro-magnetic resonance imaging (micro-MRI), micro-computerized tomography (micro-CT), and micro-positron emission tomography (micro-PET) have expanded the portfolio of tools available to study this disease. Hypoxia, a key oncogenic driver of glioma and mechanism of resistance, can be studied in vivo by the concomitant use of noninvasive MRI and PET imaging...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29330027/selective-estrogen-receptor-modulator-ormeloxifene-suppresses-embryo-implantation-via-inducing-mir-140-and-targeting-insulin-like-growth-factor-1-receptor-in-rat-uterus
#5
Vijay K Sirohi, Kanchan Gupta, Rohit Kumar, Vinay Shukla, Anila Dwivedi
Ormeloxifene, the non-steroidal SERM contraceptive, inhibits endometrial receptivity and embryo implantation via countering nidatory estrogen. However, the molecular mechanism of ormeloxifene action responsible for its contraceptive efficacy still remains unclear. Herein, we aimed to identify the miRNAs modulated under the influence of ormeloxifene and to explore their role in endometrial receptivity and embryo implantation. By doing microRNA sequencing analysis, a total of 168 miRNAs were found to be differentially expressed in uterine tissue of ormeloxifene-treated rats, on day 5 (10:00 h) of pregnancy i...
January 9, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29329908/anatomical-evidence-for-lateral-hypothalamic-innervation-of-the-pontine-a7-catecholamine-cell-group-in-rat
#6
Janean E Holden, Monica A Wagner, Brady L Reeves
Substantial behavioral evidence exists to support the idea that the lateral hypothalamus (LH) makes axonal connection with spinally-projecting noradrenergic neurons of the A7 catecholamine cell group in the pons. Through this putative projection, the LH modulates nociception via α1- and α2-adrenoceptors in the dorsal horn. We used double-label immunocytochemistry to demonstrate that axons from the LH labeled with the anterograde tracer biotinylated dextran amine (BDA) appose tyrosine hydroxylase-immunoreactive (TH-ir) neuron profiles in the A7 area...
January 9, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29327429/in-vivo-migration-of-endogenous-brain-progenitor-cells-guided-by-an-injectable-peptide-amphiphile-biomaterial
#7
Reza Motalleb, Eric J Berns, Piyush Patel, Julie Gold, Samuel I Stupp, H Georg Kuhn
Biomaterials hold great promise in helping the adult brain regenerate and rebuild after trauma. Peptide amphiphiles (PA) are highly versatile biomaterials, gelling and forming macromolecular structures when exposed to physiological levels of electrolytes. We are here reporting on the first ever in vivo use of self-assembling peptide amphiphile carrying a Tenascin-C signal (E2 Ten-C PA) for the re-direction of endogenous neuroblasts in the rodent brain. The PA forms highly aligned nanofibers, displaying the migratory sequence of Tenascin-C glycoprotein as epitope...
January 12, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29318865/-advances-in-acupuncture-mechanism-research-on-the-changes-of-synaptic-plasticity-pain-memory-for-chronic-pain
#8
Yi-Ling Yang, Jian-Peng Huang, Li Jiang, Jian-Hua Liu
Previous studies have shown that there are many common structures between the neural network of pain and memory, and the main structure in the pain network is also part of the memory network. Chronic pain is characterized by recurrent attacks and is associated with persistent ectopic impulse, which causes changes in synaptic structure and function based on nerve activity. These changes may induce long-term potentiation of synaptic transmission, and ultimately lead to changes in the central nervous system to produce "pain memory"...
December 25, 2017: Zhen Ci Yan Jiu, Acupuncture Research
https://www.readbyqxmd.com/read/29315262/intraarticularly-injected-mesenchymal-stem-cells-stimulate-anti-inflammatory-molecules-and-inhibit-pain-related-protein-and-chondrolytic-enzymes-in-a-monoiodoacetate-induced-rat-arthritis-model
#9
Toru Ichiseki, Miyako Shimazaki, Yoshimichi Ueda, Shusuke Ueda, Masanobu Tsuchiya, Daisuke Souma, Ayumi Kaneuji, Norio Kawahara
Persistent inflammation is well known to promote the progression of arthropathy. mesenchymal stem cells (MSCs) have been shown to possess anti-inflammatory properties and tissue differentiation potency. Although the experience so far with the intraarticular administration of mesenchymal stem cell (MSC) to induce cartilage regeneration has been disappointing, MSC implantation is now being attempted using various surgical techniques. Meanwhile, prevention of osteoarthritis (OA) progression and pain control remain important components of the treatment of early-stage OA...
January 9, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29314212/lumbar-to-sacral-root-rerouting-to-restore-bladder-function-in-a-feline-spinal-cord-injury-model-urodynamic-and-retrograde-nerve-tracing-results-from-a-pilot-study
#10
Ornella Lam Van Ba, Mary F Barbe, Romain Caremel, Shachar Aharony, Oleg Loutochin, Line Jacques, Matthew W Wood, Ekta Tiwari, Gerald F Tuite, Lysanne Campeau, Jacques Corcos, Michael R Ruggieri
AIMS: Lumbar to sacral rerouting surgery can potentially allow voiding via a skin-central nervous system-bladder reflex pathway. Here, we assessed if this surgery was effective in treating neurogenic bladder dysfunction/sphincter in felines. METHODS: Eight cats underwent spinal cord transection (SCT) at thoracic level 10/11. Unilateral L7 to S1 ventral root anastomosis was performed 1 month later in six cats. Two cats served as transection-only controls. Electrical and manual stimulation of L6-S1 dermatomes, and urodynamics were performed at 3, 5, 7, and 9/10 months post transection...
January 4, 2018: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/29311654/bidirectional-modulation-between-infiltrating-cd3-t-lymphocytes-and-astrocytes-in-the-spinal-cord-drives-the-development-of-allodynia-in-monoarthritic-rats
#11
Ya-Lan Zhou, Shu-Zhuan Zhou, Hao-Ling Li, Man-Li Hu, Hui Li, Qing-Huan Guo, Xiao-Ming Deng, Yu-Qiu Zhang, Hua Xu
Increasing evidence suggests that T cells and glia participate in the process of neuropathic pain. However, little is known about the involvement of T cells or the interaction between glia and T cells at the molecular level. Here we investigated the phenotype of T cell infiltration into the spinal cord in inflammatory pain and explored potential crosstalk between glia and T cells. The establishment of monoarthritis produced T cell infiltration and astrocyte activation, exhibiting similar kinetics in the spinal cord...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29311559/injured-adult-motor-and-sensory-axons-regenerate-into-appropriate-organotypic-domains-of-neural-progenitor-grafts
#12
Jennifer N Dulin, Andrew F Adler, Hiromi Kumamaru, Gunnar H D Poplawski, Corinne Lee-Kubli, Hans Strobl, Daniel Gibbs, Ken Kadoya, James W Fawcett, Paul Lu, Mark H Tuszynski
Neural progenitor cell (NPC) transplantation has high therapeutic potential in neurological disorders. Functional restoration may depend on the formation of reciprocal connections between host and graft. While it has been reported that axons extending out of neural grafts in the brain form contacts onto phenotypically appropriate host target regions, it is not known whether adult, injured host axons regenerating into NPC grafts also form appropriate connections. We report that spinal cord NPCs grafted into the injured adult rat spinal cord self-assemble organotypic, dorsal horn-like domains...
January 8, 2018: Nature Communications
https://www.readbyqxmd.com/read/29310717/characterization-of-glycosylphosphatidylinositol-biosynthesis-defects-by-clinical-features-flow-cytometry-and-automated-image-analysis
#13
Alexej Knaus, Jean Tori Pantel, Manuela Pendziwiat, Nurulhuda Hajjir, Max Zhao, Tzung-Chien Hsieh, Max Schubach, Yaron Gurovich, Nicole Fleischer, Marten Jäger, Sebastian Köhler, Hiltrud Muhle, Christian Korff, Rikke S Møller, Allan Bayat, Patrick Calvas, Nicolas Chassaing, Hannah Warren, Steven Skinner, Raymond Louie, Christina Evers, Marc Bohn, Hans-Jürgen Christen, Myrthe van den Born, Ewa Obersztyn, Agnieszka Charzewska, Milda Endziniene, Fanny Kortüm, Natasha Brown, Peter N Robinson, Helenius J Schelhaas, Yvonne Weber, Ingo Helbig, Stefan Mundlos, Denise Horn, Peter M Krawitz
BACKGROUND: Glycosylphosphatidylinositol biosynthesis defects (GPIBDs) cause a group of phenotypically overlapping recessive syndromes with intellectual disability, for which pathogenic mutations have been described in 16 genes of the corresponding molecular pathway. An elevated serum activity of alkaline phosphatase (AP), a GPI-linked enzyme, has been used to assign GPIBDs to the phenotypic series of hyperphosphatasia with mental retardation syndrome (HPMRS) and to distinguish them from another subset of GPIBDs, termed multiple congenital anomalies hypotonia seizures syndrome (MCAHS)...
January 9, 2018: Genome Medicine
https://www.readbyqxmd.com/read/29310667/wwl70-protects-against-chronic-constriction-injury-induced-neuropathic-pain-in-mice-by-cannabinoid-receptor-independent-mechanisms
#14
Jie Wen, Melissa Jones, Mikiei Tanaka, Prabhuanand Selvaraj, Aviva J Symes, Brian Cox, Yumin Zhang
BACKGROUND: Targeting the endocannabinoid system has emerged as an effective strategy for the treatment of inflammatory and neurological diseases. Unlike the inhibition of the principal 2-arachidonyl glycerol (2-AG) hydrolytic enzyme monoacylglycerol lipase (MAGL), which leads to 2-AG overload and cannabinoid receptor desensitization, selective inhibition of the minor 2-AG hydrolytic enzyme alpha, beta-hydrolase domain 6 (ABHD6) can provide therapeutic benefits without producing cannabimimetic side effects...
January 8, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29301417/isolated-kidney-perfusion-the-influence-of-pulsatile-flow
#15
Charlotte von Horn, Thomas Minor
Within the scope of transplantation research, ex vivo kidney perfusion has been proven an attractive model to study ischemia-reperfusion and preservation injury. Renal perfusion techniques also occupy scientists with the aim to optimize organ reconditioning and preparation prior to transplantation. This study investigated the influence of a pulsatile perfusion pattern that brings flow conditions closer to physiological situations, on renal perfusion characteristic and kidney function in the isolated perfused kidney...
January 4, 2018: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/29301241/comparative-venomics-of-the-vipera-ammodytes-transcaucasiana-and-vipera-ammodytes-montandoni-from-turkey-provides-insights-into-kinship
#16
Benjamin-Florian Hempel, Maik Damm, Bayram Göçmen, Mert Karis, Mehmet Anıl Oguz, Ayse Nalbantsoy, Roderich D Süssmuth
The Nose-horned Viper (Vipera ammodytes) is one of the most widespread and venomous snakes in Europe, which causes high frequent snakebite accidents. The first comprehensive venom characterization of the regional endemic Transcaucasian Nose-horned Viper (Vipera ammodytes transcaucasiana) and the Transdanubian Sand Viper (Vipera ammodytes montandoni) is reported employing a combination of intact mass profiling and bottom-up proteomics. The bottom-up analysis of both subspecies identified the major snake protein families of viper venoms...
January 1, 2018: Toxins
https://www.readbyqxmd.com/read/29295931/somatostatin-and-parvalbumin-inhibitory-synapses-onto-hippocampal-pyramidal-neurons-are-regulated-by-distinct-mechanisms
#17
Meryl E Horn, Roger A Nicoll
Excitation-inhibition balance is critical for optimal brain function, yet the mechanisms underlying the tuning of inhibition from different populations of inhibitory neurons are unclear. Here, we found evidence for two distinct pathways through which excitatory neurons cell-autonomously modulate inhibitory synapses. Synapses from parvalbumin-expressing interneurons onto hippocampal pyramidal neurons are regulated by neuronal firing, signaling through L-type calcium channels. Synapses from somatostatin-expressing interneurons are regulated by NMDA receptors, signaling through R-type calcium channels...
January 16, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29290248/stereotactic-body-radiation-therapy-for-isolated-hilar-and-mediastinal-non-small-cell-lung-cancers
#18
Zachary D Horne, Adam H Richman, Michael J Dohopolski, David A Clump, Steven A Burton, Dwight E Heron
OBJECTIVES: The seminal phase II trial for pulmonary stereotactic body radiation therapy (SBRT) suggested that SBRT to central lesions resulted in unacceptable toxicity. Alternative dose-fractionation schemes have been proposed which may improve safety without compromise of efficacy. We report our institutional outcomes of SBRT for hilar/mediastinal non-small cell lung cancer (NSCLC). MATERIALS AND METHODS: A retrospective review was conducted of patients with NSCLC in a hilar or mediastinal nodal station which was treated with SBRT...
January 2018: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/29289719/the-distribution-of-ki-67-and-doublecortin-immunopositive-cells-in-the-brains-of-three-strepsirrhine-primates-galago-demidoff-perodicticus-potto-and-lemur-catta
#19
Thandi M Fasemore, Nina Patzke, Consolate Kaswera-Kyamakya, Emmanuel Gilissen, Paul R Manger, Amadi O Ihunwo
This study investigated the pattern of adult neurogenesis throughout the brains of three prosimian primate species using immunohistochemical techniques for endogenous markers of this neural process. Two species, Galago demidoff and Perodicticus potto were obtained from wild populations in the primary rainforest of central Africa, while one species, Lemur catta, was captive-bred. Two brains from each species, perfusion-fixed with 4% paraformaldehyde, were sectioned (50 µm section thickness) in sagittal and coronal planes...
December 28, 2017: Neuroscience
https://www.readbyqxmd.com/read/29288278/two-photon-fabrication-of-hydrogel-microstructures-for-excitation-and-immobilization-of-cells
#20
Nils Frederik Hasselmann, Michael Jona Hackmann, Wolfgang Horn
We investigate in vitro fabrication of hydrogel microstructures by two photon laser lithography for single cell immobilization and excitation. Fluorescent yeast cells are embedded in water containing the hydrogel precursor mixtures and cross-linking is used to selectively immobilize a particular cell. Cell viability within the hydrogel precursor is estimated using a life/dead assay and elastic and stiff hydrogel structures are fabricated, immobilizing cells in a microfluidic environment. Additionally, we demonstrate the illumination of cells by on-the-fly fabricated hydrogel waveguide networks connected to an external light source, thereby exciting a fluorescence signal in a single immobilized cell...
December 29, 2017: Biomedical Microdevices
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