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https://www.readbyqxmd.com/read/29684510/the-rodent-tibia-fracture-model-a-critical-review-and-comparison-with-the-complex-regional-pain-syndrome-literature
#1
REVIEW
Frank Birklein, Alaa Ibrahim, Tanja Schlereth, Wade S Kingery
Distal limb fracture is the most common cause of complex regional pain syndrome (CRPS), thus the rodent tibia fracture model (TFM) was developed to study CRPS pathogenesis. This comprehensive review summarizes the published TFM research and compares these experimental results with the CRPS literature. The TFM generated spontaneous and evoked pain behaviors, inflammatory symptoms (edema, warmth) and trophic changes (skin thickening, osteoporosis) resembling symptoms in early CRPS. Neuropeptides, inflammatory cytokines, and nerve growth factor (NGF) have been linked to pain behaviors, inflammation, and trophic changes in the TFM model and proliferating keratinocytes were identified as the primary source of cutaneous cytokines and NGF...
April 20, 2018: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/29683222/ascl1-regulates-proliferation-of-ng2-glia-in-the-embryonic-and-adult-spinal-cord
#2
Demetra P Kelenis, Emma Hart, Morgan Edwards-Fligner, Jane E Johnson, Tou Yia Vue
NG2-glia are highly proliferative oligodendrocyte precursor cells (OPCs) that are widely distributed throughout the central nervous system (CNS). During development, NG2-glia predominantly differentiate into oligodendrocytes (OLs) to myelinate axon fibers, but they can also remain as OPCs persisting into the mature CNS. Interestingly, NG2-glia in the gray matter (GM) are intrinsically different from those in the white matter (WM) in terms of proliferation, differentiation, gene expression, and electrophysiological properties...
April 23, 2018: Glia
https://www.readbyqxmd.com/read/29680832/differential-fatty-acid-binding-protein-expression-in-persistent-radial-glia-in-the-human-and-sheep-subventricular-zone
#3
Birger Victor Dieriks, Justin M Dean, Eleonora Aronica, Henry J Waldvogel, Richard L M Faull, Maurice A Curtis
Fatty acid-binding proteins (FABPs) are a family of transport proteins that facilitate intracellular transport of fatty acids. Despite abundant expression in the brain, the role that FABPs play in the process of cell proliferation and migration in the subventricular zone (SVZ) remains unclear. Our results provide a detailed characterisation of FABP3, 5, and 7 expression in adult and fetal human and sheep SVZ. High FABP5 expression was specifically observed in the adult human SVZ and co-labelled with polysialylated neural cell adhesion molecule (PSA-NCAM), glial fibrillary acidic protein (GFAP), GFAPδ, and proliferating cell nuclear antigen (PCNA), indicating a role for FABP5 throughout the full maturation process of astrocytes and neuroblasts...
April 20, 2018: Developmental Neuroscience
https://www.readbyqxmd.com/read/29679034/enteric-nervous-system-regulation-of-intestinal-stem-cell-differentiation-and-epithelial-monolayer-function
#4
Marissa Puzan, Sanjin Hosic, Caroline Ghio, Abigail Koppes
The Enteric Nervous System (ENS) is a complex network of neurons and glia, which regulates sensorimotor function throughout the gastroinestinal tract (GI). Here we investigated the role of the ENS and intestinal myofibroblasts in the maintenance of a primary intestinal epithelial barrier through regulation of monolayer permeability, cytokine production, and differentiation of intestinal stem cells. Utilizing a novel, in vitro, transwell-based coculture system, murine small intestinal stem cells were isolated and cultured with ENS neurons and glia or subepithelial myofibroblasts...
April 20, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29678817/collagen-18-and-agrin-are-secreted-by-enteric-neural-crest-cells-to-remodel-their-microenvironment-and-regulate-their-migration-during-ens-development
#5
Nandor Nagy, Csilla Barad, Ryo Hotta, Sukhada Bhave, Emily Arciero, David Dora, Allan M Goldstein
The enteric nervous system arises from neural crest cells that migrate, proliferate, and differentiate into enteric neurons and glia within the intestinal wall. Many extracellular matrix (ECM) components are present in the embryonic gut, but their role in regulating ENS development is largely unknown. Here, we identify heparan sulfate proteoglycan proteins, including collagen 18 (Col18) and agrin, as important regulators of enteric neural crest-derived cell (ENCDC) development. In developing avian hindgut, Col18 is expressed at the ENCDC wavefront, while agrin expression occurs later...
April 20, 2018: Development
https://www.readbyqxmd.com/read/29678629/biological-activities-of-laminin-111-derived-peptide-chitosan-matrices-in-a-primary-culture-of-rat-cortical-neurons
#6
Hideki Hayashi, Mariko Yamada, Jun Kumai, Norio Takagi, Motoyoshi Nomizu
Cell adhesive biomaterials have been used for various cells in culture, especially for primary cultures of neurons. Here we examined laminin-111 and its active peptides conjugated to chitosan matrices (ChtMs) for primary culture of rat cortical neurons. Laminin-111 on poly-d-lysine substrate promoted neuronal cell attachment and differentiation. The biological activity of six active laminin-111-derived peptides was examined using a peptide-ChtM construct. When the syndecan-binding peptides, AG73 (RKRLQVQLSIRT, mouse laminin α1 chain 2719-2730) and C16 (KAFDITYVRLKF, laminin γ1 chain 139-150), were conjugated to chitosan, AG73-ChtM and C16-ChtM showed potent neuronal cell attachment activity and promoted axon extension by primary cultured rat cortical neurons...
April 17, 2018: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29676181/identification-of-glia-phenotype-modulators-based-on-select-glial-function-regulatory-signaling-pathways
#7
Sun-Hwa Lee, Kyoungho Suk
Despite the considerable social and economic burden on the healthcare system worldwide due to neurodegenerative diseases, there are currently few disease-altering treatment options for many of these conditions. Therefore, new approaches for both prevention and intervention for neurodegenerative diseases are urgently required. Microglia-mediated neurotoxicity is one of the pathologic hallmarks common to Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis. Current therapeutic approaches to target microglia-mediated neurotoxicity are focused on the identification of glia phenotype modulators (GPMs), which can inhibit the 'classical' pro-inflammatory and neurotoxic phenotypes of microglia...
April 20, 2018: Expert Opinion on Drug Discovery
https://www.readbyqxmd.com/read/29673028/cre-driver-lines-used-for-genetic-fate-mapping-of-neural-crest-cells-in-the-mouse-an-overview
#8
REVIEW
Julien Debbache, Vadims Parfejevs, Lukas Sommer
The neural crest is one of the embryonic structures with the broadest developmental potential in vertebrates. Morphologically, neural crest cells emerge during neurulation in the dorsal folds of the neural tube before undergoing an epithelial-to-mesenchymal transition (EMT), delaminating from the neural tube, and migrating to multiple sites in the growing embryo. Neural crest cells generate cell types as diverse as peripheral neurons and glia, melanocytes, and so-called mesectodermal derivatives that include craniofacial bone and cartilage and smooth muscle cells in cardiovascular structures...
April 19, 2018: Genesis: the Journal of Genetics and Development
https://www.readbyqxmd.com/read/29670623/human-immune-system-mice-for-the-study-of-human-immunodeficiency-virus-type-1-infection-of-the-central-nervous-system
#9
REVIEW
Teresa H Evering, Moriya Tsuji
Immunodeficient mice transplanted with human cell populations or tissues, also known as human immune system (HIS) mice, have emerged as an important and versatile tool for the in vivo study of human immunodeficiency virus-type 1 (HIV-1) pathogenesis, treatment, and persistence in various biological compartments. Recent work in HIS mice has demonstrated their ability to recapitulate critical aspects of human immune responses to HIV-1 infection, and such studies have informed our knowledge of HIV-1 persistence and latency in the context of combination antiretroviral therapy...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29670611/advances-in-biomarker-guided-therapy-for-pediatric-and-adult-onset-neuroinflammatory-disorders-targeting-chemokines-cytokines
#10
REVIEW
Michael R Pranzatelli
The concept and recognized components of "neuroinflammation" are expanding at the intersection of neurobiology and immunobiology. Chemokines (CKs), no longer merely necessary for immune cell trafficking and positioning, have multiple physiologic, developmental, and modulatory functionalities in the central nervous system (CNS) through neuron-glia interactions and other mechanisms affecting neurotransmission. They issue the "help me" cry of neurons and astrocytes in response to CNS injury, engaging invading lymphoid cells (T cells and B cells) and myeloid cells (dendritic cells, monocytes, and neutrophils) (adaptive immunity), as well as microglia and macrophages (innate immunity), in a cascade of events, some beneficial (reparative), others destructive (excitotoxic)...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29666360/signaling-pathways-responsible-for-the-rapid-antidepressant-like-effects-of-a-glun2a-preferring-nmda-receptor-antagonist
#11
Marta Gordillo-Salas, Fuencisla Pilar-Cuéllar, Yves P Auberson, Albert Adell
In a previous study we found that the preferring GluN2A receptor antagonist, NVP-AAM077, elicited rapid antidepressant-like effects in the forced swim test that was related to the release of glutamate and serotonin in the medial prefrontal cortex. In the present work we sought to examine the duration of this behavioral effect as well as the molecular readouts involved. Our results showed that NVP-AAM077 reduced the immobility in the forced swim test 30 min and 24 h after its administration. However, this effect waned 7 days later...
April 18, 2018: Translational Psychiatry
https://www.readbyqxmd.com/read/29666150/epigenetics-and-epitranscriptomics-in-temporal-patterning-of-cortical-neural-progenitor-competence
#12
REVIEW
Ki-Jun Yoon, Caroline Vissers, Guo-Li Ming, Hongjun Song
During embryonic brain development, neural progenitor/stem cells (NPCs) sequentially give rise to different subtypes of neurons and glia via a highly orchestrated process. To accomplish the ordered generation of distinct progenies, NPCs go through multistep transitions of their developmental competence. The molecular mechanisms driving precise temporal coordination of these transitions remains enigmatic. Epigenetic regulation, including changes in chromatin structures, DNA methylation, and histone modifications, has been extensively investigated in the context of cortical neurogenesis...
April 17, 2018: Journal of Cell Biology
https://www.readbyqxmd.com/read/29666144/sporadic-amyotrophic-lateral-sclerosis-sals-skeletal-muscle-response-to-cerebrospinal-fluid-from-sals-patients-in-a-rat-model
#13
Shruthi Shanmukha, Gayathri Narayanappa, Atchayaram Nalini, Phalguni Anand Alladi, Trichur R Raju
Skeletal muscle atrophy is the most prominent feature of amyotrophic lateral sclerosis (ALS), an adult-onset neurodegenerative disease of motor neurons. However, the contribution of skeletal muscle to disease progression remains elusive. Our previous studies have shown that intrathecal injection of cerebrospinal fluid from sporadic ALS patients (ALS-CSF) induces several degenerative changes in motor neurons and glia of neonatal rats. Here, we describe various pathologic events in the rat extensor digitorum longus muscle following intrathecal injection of ALS-CSF...
April 16, 2018: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/29665410/the-role-of-the-rx-homeobox-gene-in-retinal-progenitor-proliferation-and-cell-fate-specification
#14
H M Rodgers, V J Huffman, V A Voronina, M Lewandoski, P H Mathers
The Retinal homeobox gene (Rx; also Rax) plays a crucial role in the early development of the vertebrate eye. Germline deletion of Rx in mice results in the failure of optic vesicle formation, leading to anophthalmia. Recent research using conditional mouse knockout models provides some clues to the role of Rx in eye development following optic vesicle formation. However, the functions of Rx in embryonic retinogenesis are still not fully understood. We investigated the function of Rx in the mouse neural retina using a conditional knockout where the Pax6α-Cre driver deletes Rx activity in early retinal progenitors...
April 14, 2018: Mechanisms of Development
https://www.readbyqxmd.com/read/29662438/cannabinoid-receptor-type-1-expression-in-the-developing-avian-retina-morphological-and-functional-correlation-with-the-dopaminergic-system
#15
Luzia da Silva Sampaio, Regina C C Kubrusly, Yolanda P Colli, Priscila P Trindade, Victor T Ribeiro-Resende, Marcelo Einicker-Lamas, Roberto Paes-de-Carvalho, Patricia F Gardino, Fernando G de Mello, Ricardo A De Melo Reis
The avian retina has been used as a model to study signaling by different neuro- and gliotransmitters. It is unclear how dopaminergic and cannabinoid systems are related in the retina. Here we studied the expression of type 1 and 2 cannabinoid receptors (CB1 and CB2 ), as well as monoacylglycerol lipase (MAGL), the enzyme that degrades 2-arachidonoylglycerol (2-AG), during retina development. Our data show that CB1 receptor is highly expressed from embryonic day 5 (E5) until post hatched day 7 (PE7), decreasing its levels throughout development...
2018: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29662436/the-neuroglial-dialog-between-cannabinoids-and-hemichannels
#16
Valeria C Labra, Cristian A Santibáñez, Rosario Gajardo-Gómez, Esteban F Díaz, Gonzalo I Gómez, Juan A Orellana
The formation of gap junctions was initially thought to be the central role of connexins, however, recent evidence had brought to light the high relevance of unopposed hemichannels as an independent mechanism for the selective release of biomolecules during physiological and pathological conditions. In the healthy brain, the physiological opening of astrocyte hemichannels modulates basal excitatory synaptic transmission. At the other end, the release of potentially neurotoxic compounds through astroglial hemichannels and pannexons has been insinuated as one of the functional alterations that negatively affect the progression of multiple brain diseases...
2018: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29660653/antinociception-induced-by-rosuvastatin-in-murine-neuropathic-pain
#17
Hugo F Miranda, Fernando Sierralta, Nicolas Aranda, Paula Poblete, Rodrigo L Castillo, Viviana Noriega, Juan Carlos Prieto
BACKGROUND: Neuropathic pain, and subsequent hypernociception, can be induced in mice by paclitaxel (PTX) administration and partial sciatic nerve ligation (PSNL). Its pharmacotherapy has been a clinical challenge, due to a lack of effective treatment. In two models of mouse neuropathic pain (PTX and PSNL) the antinociception induced by rosuvastatin and the participation of proinflammatory biomarkers, interleukin (IL)- 1β, TBARS and glutathione were evaluated. METHODS: A dose-response curve for rosuvastatin ip was obtained on cold plate, hot plate and Von Frey assays...
November 22, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/29660443/cell-to-cell-communication-by-extracellular-vesicles-focus-on-microglia
#18
REVIEW
Rosa C Paolicelli, Giorgio Bergamini, Lawrence Rajendran
Extracellular vesicles, including exosomes and microvesicles, are small, nano-to-micrometer vesicles that are released from cells. While initially observed in immune cells and reticulocytes as vesicles meant to remove archaic proteins, now they have been observed in almost all cell types of multicellular organisms. Growing evidence indicates that extracellular vesicles, containing lipids, proteins and RNAs, represent an efficient way to transfer functional cargoes from one cell to another. In the central nervous system, the extensive cross-talk ongoing between neurons and glia, including microglia, the immune cells of the brain, takes advantage of secreted vesicles, which mediate intercellular communication over long range distance...
April 13, 2018: Neuroscience
https://www.readbyqxmd.com/read/29659152/cranial-pair-i-the-olfactory-nerve
#19
Carlos Crespo, Teresa Liberia, José Miguel Blasco-Ibáñez, Juan Nácher, Emilio Varea
The olfactory nerve constitutes the first cranial pair. Compared with other cranial nerves, it depicts some atypical features. First, the olfactory nerve does not form a unique bundle. The olfactory axons join other axons and form several small bundles or fascicles: the fila olfactoria. These fascicles leave the nasal cavity, pass through the lamina cribrosa of the ethmoid bone and enter the brain. The whole of these fascicles is what is known as the olfactory nerve. Second, the olfactory sensory neurons, whose axons integrate the olfactory nerve, connect the nasal cavity and the brain without any relay...
April 16, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29655639/glia-maturation-factor-beta-is-required-for-reactive-gliosis-after-traumatic-brain-injury-in-zebrafish
#20
Guo Yin, Mingjun Du, Rong Li, Ke Li, Xiaomin Huang, Dongbei Duan, Xiaolan Ai, Fang Yao, Lanlan Zhang, Ziyou Hu, Bingyi Wu
Gliosis is a hallmark of neural pathology that occurs after most forms of central nervous system (CNS) injuries including traumatic brain injury (TBI). Identification of genes that control gliosis may provide novel treatment targets for patients with diverse CNS injuries. Glia maturation factor beta (GMFB) is crucial in brain development and stress response. In the present study, GMFB was found to be widely expressed in adult zebrafish telencephalon. A gmfb mutant zebrafish was created using CRISPR/cas9. In the uninjured zebrafish telencephalon, glial fibrillary acidic protein (GFAP) fibers in gmfb mutants were disorganized and shorter than wild type zebrafish...
April 12, 2018: Experimental Neurology
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