Neuronal regulation of astrocyte morphology in vitro is mediated by GABAergic signaling.

abstract：:Cannabinoid agonists might serve as neuroprotective agents in neurodegenerative disorders. Here, we examined this hypothesis in a rat model of Huntington's disease (HD) generated by intrastriatal injection of the mitochondrial complex II inhibitor malonate. Our results showed that only compounds able to activate CB2 r...

journal_title：Glia

authors： Sagredo O,González S,Aroyo I,Pazos MR,Benito C,Lastres-Becker I,Romero JP,Tolón RM,Mechoulam R,Brouillet E,Romero J,Fernández-Ruiz J

更新日期：2009-08-15 00:00:00

abstract：:Several lines of evidence indicate that the elaborated calcium signals and the occurrence of calcium waves in astrocytes provide these cells with a specific form of excitability. The identification of the cellular and molecular steps involved in the triggering and transmission of Ca(2+) waves between astrocytes result...

journal_title：Glia

authors： Scemes E,Giaume C

更新日期：2006-11-15 00:00:00

abstract：:The idea of a metabolic coupling between neurons and astrocytes in the brain has been entertained for about 100 years. The use recently of simple and well-compartmentalized nervous systems, such as the honeybee retina or purified preparations of neurons and glia, provided strong support for a nutritive function of gli...

journal_title：Glia

authors： Tsacopoulos M,Poitry-Yamate CL,Poitry S,Perrottet P,Veuthey AL

更新日期：1997-09-01 00:00:00

abstract：:Hyperpolarization-activated currents were recorded from rat brain cortical and spinal cord astrocytes maintained in culture. Spinal cord astrocytes expressed primarily an inward rectifier potassium current characterized by time-dependent inactivation, a strong dependence on extracellular Na+ and insensitivity to intra...

journal_title：Glia

authors： Guatteo E,Stanness KA,Janigro D

更新日期：1996-03-01 00:00:00

abstract：:Oligodendrocyte precursor cells (OPCs) originate from restricted regions of the brain and migrate into the developing white matter, where they differentiate into oligodendrocytes and myelinate axons in the central nervous system (CNS). The molecular mechanisms that orchestrate these long distance trips of OPCs to popu...

journal_title：Glia

authors： Xiao L,Hu C,Yang W,Guo D,Li C,Shen W,Liu X,Aijun H,Dan W,He C

更新日期：2013-12-01 00:00:00

abstract：:Neuroepithelial progenitor cells from forebrains of newborn rat pups develop into "mature" astrocytes in an epidermal growth factor-containing medium free of serum (Von Visger et al: Exp Neurol 128:34, 1994). Eight-week-old "mature" astrocyte cultures on poly-L-lysine-coated dishes were exposed to an acidic medium (pH...

journal_title：Glia

authors： Oh TH,Markelonis GJ,Von Visger JR,Baik B,Shipley MT

更新日期：1995-04-01 00:00:00

abstract：:Severe transient focal cerebral ischemia causes brain infarction with a strong glial reaction. We have studied whether postischemic reactive glial cells express epidermal growth factor receptor (EGFR) following middle cerebral artery occlusion in the rat. We have also looked for signs of proliferating activity, as EGF...

journal_title：Glia

authors： Planas AM,Justicia C,Soriano MA,Ferrer I

更新日期：1998-06-01 00:00:00

abstract：:In the cerebellar cortex, Bergmann glia enclose the synapses of both parallel and climbing fiber inputs to the Purkinje neuron. The glia express Ca(2+)-permeable AMPA receptors, and the GLAST and GLT-1 classes of glutamate transporter, which are activated by glutamate released during synaptic transmission. We have pre...

journal_title：Glia

authors： Balakrishnan S,Bellamy TC

更新日期：2009-03-01 00:00:00

abstract：:In the present study the distribution of astrocytes in the nerve fiber layer (NFL) has been studied in the sparsely vascularized retinae of the guinea pig and horse and in the richly vascularized retina of the Old World monkey (Cercopithecus aethiops) using immunocytochemical methods. In the guinea pig retina glial fi...

journal_title：Glia

authors： Schnitzer J

更新日期：1988-01-01 00:00:00

abstract：:Manganese in excess is neurotoxic and causes CNS injury resembling that of Parkinson's disease. In brain, astrocytes predominantly take up and accumulate manganese and are thus vulnerable to its toxicity. Manganese was shown to induce cell swelling in cultured astrocytes, and oxidative/nitrosative stress (ONS) mediate...

journal_title：Glia

authors： Rao KV,Jayakumar AR,Reddy PV,Tong X,Curtis KM,Norenberg MD

更新日期：2010-09-01 00:00:00

abstract：:ATP stimulates arachidonic acid mobilization and eicosanoid production in cultured astrocytes via P2Y-purinergic receptors. To assist in determining the mechanism of phospholipase A2 activation and the role of calcium in eicosanoid production, cultures were pretreated with pertussis toxin (PTx). ATP-evoked eicosanoid ...

journal_title：Glia

authors： Bruner G,Murphy S

更新日期：1993-03-01 00:00:00

abstract：:Human astrocytes provide trophic as well as structural support to the surrounding brain cells. Furthermore, they have been implicated in many physiological processes important for central nervous system function. Traditionally astrocytes have been considered to be a homogeneous class of cells, however, it has increasi...

journal_title：Glia

authors： de Majo M,Koontz M,Rowitch D,Ullian EM

更新日期：2020-04-01 00:00:00

abstract：:Neurons in organotypic hippocampal slice cultures (OHSCs) are known to preserve morphological and physiological features of the in vivo situation; however, little is known about the properties of microglial cells under these in vitro conditions. In this study, we addressed the question whether microglial cells in OHSC...

journal_title：Glia

authors： Hailer NP,Jarhult JD,Nitsch R

更新日期：1996-12-01 00:00:00

abstract：:A role for free radicals has been proposed in infectious brain disease, where resident microglia cells upregulate the inducible nitric oxide synthase isoform (iNOS), and thus are capable of producing nitric oxide at enhanced rates. Using the constitutively expressed NADPH oxidase, microglial cells can generate superox...

journal_title：Glia

authors： Possel H,Noack H,Putzke J,Wolf G,Sies H

更新日期：2000-10-01 00:00:00

abstract：:Painful neuropathy is one of the most common complications of diabetes, one hallmark of which is tactile allodynia (pain hypersensitivity to innocuous stimulation). The underlying mechanisms of tactile allodynia are, however, poorly understood. Emerging evidence indicates that, following nerve injury, activated microg...

journal_title：Glia

authors： Tsuda M,Ueno H,Kataoka A,Tozaki-Saitoh H,Inoue K

更新日期：2008-03-01 00:00:00

abstract：:In the brain, glycogen metabolism has been implied in synaptic plasticity and learning, yet the distribution of this molecule has not been fully described. We investigated cerebral glycogen of the mouse by immunohistochemistry (IHC) using two monoclonal antibodies that have different affinities depending on the glycog...

journal_title：Glia

authors： Oe Y,Baba O,Ashida H,Nakamura KC,Hirase H

更新日期：2016-09-01 00:00:00

abstract：:Regeneration in the adult central nervous system (CNS) is thought to be hampered by the lesion-induced activation of astrocytes and meningeal cells and the consecutive formation of a glial scar. The substrate properties of reactive astrocytes differ significantly from their neonatal counterparts, which promote axon gr...

journal_title：Glia

authors： Hirsch S,Bähr M

更新日期：1999-03-01 00:00:00

abstract：:Blood macrophages and brain macrophages (microglia) have been implicated in demyelination and destruction of the oligodendrocyte in multiple sclerosis (MS), a disease affecting primarily white matter of the central nervous system (CNS). In this study, we demonstrate that at high effector to target cell ratios, normal ...

journal_title：Glia

authors： Merrill JE,Zimmerman RP

更新日期：1991-01-01 00:00:00

abstract：:The purpose of this study was to investigate whether insulin, fibroblast growth factor (FGF), and mitogen-activated protein kinase (MAPK) pathways protect retinal neurons against excitotoxicity and regulate the proliferation of Müller glia. We found that intraocular injections of insulin or FGF2 had variable effects u...

journal_title：Glia

authors： Fischer AJ,Scott MA,Ritchey ER,Sherwood P

更新日期：2009-11-01 00:00:00

abstract：:Mitogenic growth factors play an important role in the initial stages of oligodendrocyte development, but their roles in the process of myelination itself remain less well defined. In order to study directly the effects of different growth factors on myelination, we used a purified in vitro co-culture system with dors...

journal_title：Glia

authors： Wang Z,Colognato H,Ffrench-Constant C

更新日期：2007-04-01 00:00:00

abstract：:Astrocytes play an important role in neuroprotective responses. Recent studies indicate that endothelin-1, a neuropeptide upregulated during brain injury, increases levels of the endocannabinoid anandamide, a lipid with neuroprotective properties, in astrocytes in primary cultures. However, whether this neuropeptide a...

journal_title：Glia

authors： Walter L,Stella N

更新日期：2003-10-01 00:00:00

abstract：:Extracellular matrix molecules are involved in the cellular functions of proliferation, migration, morphological differentiation, and synaptic plasticity. One candidate molecule of the extracellular matrix is the chondroitin sulfate proteoglycan neurocan. To determine whether neurocan expression is regulated by neuron...

journal_title：Glia

authors： Schwarzacher SW,Vuksic M,Haas CA,Burbach GJ,Sloviter RS,Deller T

更新日期：2006-05-01 00:00:00

abstract：:Extracellular purines are signaling molecules in the neurogenic niches of the brain and spinal cord, where they activate cell surface purinoceptors at embryonic neural stem cells (NSCs) and adult neural progenitor cells (NPCs). Although mRNA and protein are expressed at NSCs/NPCs for almost all subtypes of the nucleot...

journal_title：Glia

authors： Tang Y,Illes P

更新日期：2017-02-01 00:00:00

abstract：:We have examined the migratory capacity of Schwann cells from the distal stump of a 1-week transected sciatic nerve of adult rat for a distance of 10 mm. The distal stump was introduced into the open end of a silicone chamber packed with artificial fibrin sponge (Gelaspon) soaked in phosphate-buffered saline (control ...

journal_title：Glia

authors： Dubový P,Svízenská I

更新日期：1992-01-01 00:00:00

abstract：:Abnormal neuronal activity in sensory ganglia contributes to chronic pain. There is evidence that signals can spread between cells in these ganglia, which may contribute to this activity. Satellite glial cells (SGCs) in sensory ganglia undergo activation following peripheral injury and participate in cellular communic...

journal_title：Glia

authors： Belzer V,Hanani M

更新日期：2019-07-01 00:00:00

abstract：:Insulin-like growth factor II (IGFII) acts as a potent mitogen for several tumor types and has been reported to positively influence astrocytoma cell growth and motility. In the central nervous system, IGFII bioavailability is mainly modulated by insulin-like growth factor binding protein 2 (IGFBP2), which sequestrate...

journal_title：Glia

authors： Rorive S,Berton A,D'haene N,Takacs CN,Debeir O,Decaestecker C,Salmon I

更新日期：2008-11-15 00:00:00

abstract：:Enriched preparations of oligodendrocytes, isolated either from adult bovine brain or from 30-day-old rat brain, eventually yield cultures in MEM-15% calf serum that contain, in addition to oligodendrocytes, proliferating astrocytes and variable numbers of fibroblast-like cells. If these cultures are switched to a ser...

journal_title：Glia

authors： Norton WT,Farooq M,Chiu FC,Bottenstein JE

更新日期：1988-01-01 00:00:00

abstract：:Microglia transform from homeostatic to disease-associated-microglia (DAM) profiles in neurodegeneration. Within DAM, we recently identified distinct pro-inflammatory and anti-inflammatory sub-profiles although transcriptional regulators of homeostatic and distinct DAM profiles remain unclear. Informed by these studie...

journal_title：Glia

authors： Gao T,Jernigan J,Raza SA,Dammer EB,Xiao H,Seyfried NT,Levey AI,Rangaraju S

更新日期：2019-10-01 00:00:00

abstract：:Astrocytes are arranged in highly organized gap junction-coupled networks, communicating via the propagation of Ca2+ waves. Astrocytes are gap junction-coupled not only to neighboring astrocytes, but also to oligodendrocytes, forming so-called panglial syncytia. It is not known, however, whether glial cells in panglia...

journal_title：Glia

authors： Beiersdorfer A,Scheller A,Kirchhoff F,Lohr C

更新日期：2019-07-01 00:00:00

abstract：:Cortical spreading depression (CSD) is a slowly propagating wave of depolarization of gray matter. This phenomenon is believed to underlie the migraine aura and similar waves of depolarization may exacerbate injury in a number of neurological disease states. CSD is characterized by massive ion dyshomeostasis, cell swe...

journal_title：Glia

authors： Rosic B,Dukefoss DB,Åbjørsbråten KS,Tang W,Jensen V,Ottersen OP,Enger R,Nagelhus EA

更新日期：2019-06-01 00:00:00