Loss of inwardly rectifying potassium currents by human retinal glial cells in diseases of the eye.

Abstract:

:We compared the inward K+ currents of Müller glial cells from healthy and pathologically changed human retinas. To this purpose, the whole-cell voltage-clamp technique was performed on noncultured Müller cells acutely isolated from human retinas. Cells originated from retinas of four healthy organ donors and of 24 patients suffering from different vitreoretinal and chorioretinal diseases. Müller cells from organ donors displayed inward K+ currents in the whole-cell mode similar to those found in other species. In contrast, this pattern was clearly changed in the Müller cells from patient retinas. In whole-cell recordings many Müller cells had strongly decreased inward K+ current amplitudes or lost these currents completely. Thus, the mean input resistance of Müller cells from patients was significantly increased to 1,129 +/- 812 M omega, compared to 279 +/- 174 M omega in Müller cells from healthy organ donor retinas. Accordingly, since the membrane potential is mainly determined by the K+ inward conductance in healthy Müller cells, a large amount of Müller cells from patient retinas had a membrane potential which was significantly lower than that of Müller cells from control eyes. The mean membrane potentials were -37 +/- 24 mV and -63 +/- 25 mV for patient and donor Müller cells, respectively. The newly described membrane characteristic changes of Müller cells from patient eyes are assumed to interfere severely with normal retinal function: (1) the retinal K+ homeostasis, which is partly regulated by the Müller cell-mediated spatial buffering, should be disturbed, and (2) the diminished membrane potential should influence voltage-dependent transporter systems of the Müller cells, e.g., the Na(+)-dependent glutamate uptake.

journal_name

Glia

journal_title

Glia

authors

Francke M,Pannicke T,Biedermann B,Faude F,Wiedemann P,Reichenbach A,Reichelt W

doi

10.1002/(sici)1098-1136(199707)20:3<210::aid-glia5

subject

Has Abstract

pub_date

1997-07-01 00:00:00

pages

210-8

issue

3

eissn

0894-1491

issn

1098-1136

pii

10.1002/(SICI)1098-1136(199707)20:3<210::AID-GLIA5

journal_volume

20

pub_type

杂志文章

相关文献

GLIA文献大全
  • Nitric oxide as a messenger between neurons and satellite glial cells in dorsal root ganglia.

    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

    pub_type: 杂志文章

    doi:10.1002/glia.23603

    authors: Belzer V,Hanani M

    更新日期:2019-07-01 00:00:00

  • The function of RhoGTPases in axon ensheathment and myelination.

    abstract::RhoGTPases are molecular switches that integrate extracellular signals to perform diverse cellular responses. This ability relies on the network of proteins regulating RhoGTPases activity and localization, and on the interaction of RhoGTPases with many different cellular effectors. Myelination is an ideal place for Rh...

    journal_title:Glia

    pub_type: 杂志文章,评审

    doi:10.1002/glia.20752

    authors: Feltri ML,Suter U,Relvas JB

    更新日期:2008-11-01 00:00:00

  • Allograft-inflammatory factor-1 in rat experimental autoimmune encephalomyelitis, neuritis, and uveitis: expression by activated macrophages and microglial cells.

    abstract::Allograft inflammatory factor-1 (AIF-1) is a Ca2+ binding peptide expressed predominantly by activated monocytes. In order to investigate the role of AIF-1 in autoimmune lesions of the rat nervous system, we have used a synthetic gene to express AIF-1 in E. coli and have produced monoclonal antibodies against AIF-1. A...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/(sici)1098-1136(199810)24:2<244::aid-glia9

    authors: Schluesener HJ,Seid K,Kretzschmar J,Meyermann R

    更新日期:1998-10-01 00:00:00

  • Increased expression of colony-stimulating factor-1 in mouse spinal cord with experimental autoimmune encephalomyelitis correlates with microglial activation and neuronal loss.

    abstract::Microglia contribute to pathophysiology at all stages of multiple sclerosis. Colony-stimulating factor-1 (CSF1) is crucial for microglial proliferation and activation. In this study we measured the CSF1 levels and studied its cellular expression in the mouse spinal cords with experimental autoimmune encephalomyelitis ...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.23464

    authors: Gushchina S,Pryce G,Yip PK,Wu D,Pallier P,Giovannoni G,Baker D,Bo X

    更新日期:2018-10-01 00:00:00

  • Evidence of active microglia in substantia nigra pars compacta of parkinsonian monkeys 1 year after MPTP exposure.

    abstract::Inflammatory changes have been found in Parkinson's disease, in humans intoxicated with the parkinsonian toxin MPTP, and in animal models of the disease. However, it is still not known whether inflammatory changes are responsible for active nerve cell death or if they have a protective role against neurodegeneration. ...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.20015

    authors: Barcia C,Sánchez Bahillo A,Fernández-Villalba E,Bautista V,Poza Y Poza M,Fernández-Barreiro A,Hirsch EC,Herrero MT

    更新日期:2004-05-01 00:00:00

  • Single channel potassium currents in cultured adult bovine oligodendrocytes.

    abstract::These studies have enabled the first characterization of the properties of ion channels in adult oligodendrocytes. Cell-attached recordings from cultured adult bovine cells showed channel activity with 140 mM KCl in the patch pipette; the amplitude of the currents was increased with increasing membrane hyperpolarizati...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.440020503

    authors: McLarnon JG,Kim SU

    更新日期:1989-01-01 00:00:00

  • Signaling proteins in the axoglial apparatus of sciatic nerve nodes of Ranvier.

    abstract::During action potential conduction, the axonal specializations at the node, together with the adjacent paranodal terminations of the myelin sheath, interact with glial processes that invest the nodal gap. The nature of the mutual signals between axons and myelinating glia, however, are not well understood. Here we hav...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.20448

    authors: Toews JC,Schram V,Weerth SH,Mignery GA,Russell JT

    更新日期:2007-01-15 00:00:00

  • Quantification of oligodendrocyte progenitor cells in human and cat optic nerve: implications for endogenous repair in multiple sclerosis.

    abstract::In multiple sclerosis (MS), one strategy to reduce disability is enhancement of endogenous repair by remyelinating oligodendrocytes derived from oligodendrocyte progenitor cells (OP). An important prerequisite is determining the abundance of OP relative to oligodendrocytes in normal human central nervous system (CNS),...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.21018

    authors: Jennings A,Carroll W

    更新日期:2010-09-01 00:00:00

  • Distribution of P2X receptors on astrocytes in juvenile rat hippocampus.

    abstract::Recent evidence suggested that ATP acting via ionotropic (P2X) and metabotropic (P2Y) purinergic receptors might be involved in signaling between glial cells and within glial-neuronal networks. In contrast to their neuronal counterpart, the identity of P2X receptors in CNS glial cells is largely unknown. In the presen...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.1091

    authors: Kukley M,Barden JA,Steinhäuser C,Jabs R

    更新日期:2001-10-01 00:00:00

  • Sequence of oligodendrocyte development in the human fetal telencephalon.

    abstract::Oligodendrocytes (OL), cells that myelinate axons in the CNS, differentiate from early to late oligodendrocyte progenitor cells (OPC) to become mature OL. Unlike the case in the rodent brain, myelin formation starts prenatally in the human brain, but the sequence of OL development and the onset of myelination are not ...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.20134

    authors: Jakovcevski I,Zecevic N

    更新日期:2005-03-01 00:00:00

  • Ultrastructural relationships between noradrenergic nerve fibers and non-neuronal elements in the rat cerebral cortex.

    abstract::Pharmacological and biochemical data suggest that noradrenaline (NA)-containing fibers not only regulate the activity of cortical neurons but also influence the functional state of non-neuronal elements. In the present study, immunocytochemistry with an antiserum against NA, followed by silver-gold intensification of ...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/(SICI)1098-1136(199606)17:2<133::AID-GLIA5

    authors: Paspalas CD,Papadopoulos GC

    更新日期:1996-06-01 00:00:00

  • NOSH-aspirin (NBS-1120), a novel nitric oxide and hydrogen sulfide releasing hybrid, attenuates neuroinflammation induced by microglial and astrocytic activation: a new candidate for treatment of neurodegenerative disorders.

    abstract::Hydrogen sulfide (H2 S) and nitric oxide (NO) have been described as gasotransmitters. Anti-inflammatory activity in the central and peripheral nervous systems may be one of their functions. Previously we demonstrated that several SH(-) donors including H2 S-releasing aspirin (S-ASA) exhibited anti-inflammatory and ne...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.22553

    authors: Lee M,McGeer E,Kodela R,Kashfi K,McGeer PL

    更新日期:2013-10-01 00:00:00

  • Expression of the B7-related molecule ICOSL by human glioma cells in vitro and in vivo.

    abstract::Human glioblastoma is a highly lethal tumor known for its capability of interfering with effective antitumor immune responses. Costimulatory signals are of critical relevance in both the inductive and effector phases of immune responses. Inducible costimulator-ligand (ICOSL), a member of the B7 family of costimulatory...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.10291

    authors: Schreiner B,Wischhusen J,Mitsdoerffer M,Schneider D,Bornemann A,Melms A,Tolosa E,Weller M,Wiendl H

    更新日期:2003-12-01 00:00:00

  • Oligodendrocytes expressing exclusively the DM20 isoform of the proteolipid protein gene: myelination and development.

    abstract::Oligodendroglia and Schwann cells synthesize myelin-specific proteins and lipids for the assembly of the highly organized myelin membrane of the motor-sensory axons in the central (CNS) and peripheral nervous system (PNS), respectively, allowing rapid saltatory conduction. The isoforms of the main myelin proteins, the...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.10014

    authors: Spörkel O,Uschkureit T,Büssow H,Stoffel W

    更新日期:2002-01-01 00:00:00

  • Deletion of oligodendrocyte Cx32 and astrocyte Cx43 causes white matter vacuolation, astrocyte loss and early mortality.

    abstract::CNS glia exhibit a variety of gap junctional interactions: between neighboring astrocytes, between neighboring oligodendrocytes, between astrocytes and oligodendrocytes, and as 'reflexive' structures between layers of myelin in oligodendrocytes. Together, these junctions are thought to form a network facilitating abso...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.21179

    authors: Magnotti LM,Goodenough DA,Paul DL

    更新日期:2011-07-01 00:00:00

  • Megalin mediates the influence of sonic hedgehog on oligodendrocyte precursor cell migration and proliferation during development.

    abstract::Oligodendrocyte precursor cells (OPCs) of the optic nerve are generated in the preoptic area, from where they migrate to colonize it entirely. Sonic hedgehog (Shh) induces the proliferation of these cells as well as influencing their migration, acting through its canonical receptor (Ptc-1). However, the multiligand re...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.22316

    authors: Ortega MC,Cases O,Merchán P,Kozyraki R,Clemente D,de Castro F

    更新日期:2012-05-01 00:00:00

  • Inflammatory mediators increase the expression of nociceptin/orphanin FQ in rat astrocytes in culture.

    abstract::In the central nervous system, glial cells play an important role in inflammatory and immune responses, and opioid peptides have been identified as essential mediators between the nervous and the immune systems. We report the profound upregulation of the opioid-related nociceptin/orphanin FQ (N/OFQ) by inflammatory me...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.10106

    authors: Buzas B,Rosenberger J,Kim KW,Cox BM

    更新日期:2002-09-01 00:00:00

  • GABA release triggered by the activation of neuron-like non-NMDA receptors in cultured type 2 astrocytes is carrier-mediated.

    abstract::Kainate (KA), quisqualate (QA), and alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) stimulated gamma-aminobutyric acid [3H]gamma-aminobutyric acid (GABA) release from cultured cerebellar type 2 astrocytes and from their bipotential precursors. The evoked release was prevented by the antagonist 6-cyano-...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.440040302

    authors: Gallo V,Patrizio M,Levi G

    更新日期:1991-01-01 00:00:00

  • An FGF-responsive astrocyte precursor isolated from the neonatal forebrain.

    abstract::Gliogenesis in the mammalian CNS continues after birth, with astrocytes being generated well into the first two postnatal weeks. In this study, we have isolated an A2B5(+) astrocyte precursor (APC) from the postnatal rat forebrain, which is capable of differentiating into mature astrocytes in serum-free medium without...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.20788

    authors: Lin G,Goldman JE

    更新日期:2009-04-15 00:00:00

  • PPARβ/δ-agonist GW0742 ameliorates dysfunction in fatty acid oxidation in PSEN1ΔE9 astrocytes.

    abstract::Astrocytes are the gatekeepers of neuronal energy supply. In neurodegenerative diseases, bioenergetics demand increases and becomes reliant upon fatty acid oxidation as a source of energy. Defective fatty acid oxidation and mitochondrial dysfunctions correlate with hippocampal neurodegeneration and memory deficits in ...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.23534

    authors: Konttinen H,Gureviciene I,Oksanen M,Grubman A,Loppi S,Huuskonen MT,Korhonen P,Lampinen R,Keuters M,Belaya I,Tanila H,Kanninen KM,Goldsteins G,Landreth G,Koistinaho J,Malm T

    更新日期:2019-01-01 00:00:00

  • Glutamate transport by retinal Muller cells in glutamate/aspartate transporter-knockout mice.

    abstract::Glutamate transporters are involved in maintaining extracellular glutamate at a low level to ensure a high signal-to-noise ratio for glutamatergic neurotransmission and to protect neurons from excitotoxic damage. The mammalian retina is known to express the excitatory amino acid transporters, EAAT1-5; however, their s...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.20097

    authors: Sarthy VP,Pignataro L,Pannicke T,Weick M,Reichenbach A,Harada T,Tanaka K,Marc R

    更新日期:2005-01-15 00:00:00

  • Effect of benzodiazepines and pentobarbital on the GABA-induced depolarization in cultured astrocytes.

    abstract::We have previously shown that cultured astrocytes from neonatal rat cerebral cortex are depolarized by GABA. The underlying ionic mechanism, activation of a Cl- conductance and responses to an agonist and antagonists were found to be similar to those of the neuronal GABAA receptor (Kettenmann et al.: Brain Research 40...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.440010205

    authors: Backus KH,Kettenmann H,Schachner M

    更新日期:1988-01-01 00:00:00

  • An update on human astrocytes and their role in development and disease.

    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

    pub_type: 杂志文章

    doi:10.1002/glia.23771

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

    更新日期:2020-04-01 00:00:00

  • Adenosine dysfunction in epilepsy.

    abstract::Extracellular levels of the brain's endogenous anticonvulsant and neuroprotectant adenosine largely depend on an astrocyte-based adenosine cycle, comprised of ATP release, rapid degradation of ATP into adenosine, and metabolic reuptake of adenosine through equilibrative nucleoside transporters and phosphorylation by a...

    journal_title:Glia

    pub_type: 杂志文章,评审

    doi:10.1002/glia.22285

    authors: Boison D

    更新日期:2012-08-01 00:00:00

  • Na+ channels of Müller (glial) cells isolated from retinae of various mammalian species including man.

    abstract::Within the last few years, the expression of voltage-dependent, TTX-sensitive Na+ channels has been demonstrated in several types of neuroglial cells such as astrocytes and Schwann cells. Recently, we reported the occurrence of such Na+ currents in retinal Müller (glial) cells from dog and cat. This paper deals with t...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.440100304

    authors: Chao TI,Skachkov SN,Eberhardt W,Reichenbach A

    更新日期:1994-03-01 00:00:00

  • NG2 expression in NG2 glia is regulated by binding of SoxE and bHLH transcription factors to a Cspg4 intronic enhancer.

    abstract::NG2 is a type 1 integral membrane glycoprotein encoded by the Cspg4 gene. It is expressed on glial progenitor cells known as NG2 glial cells or oligodendrocyte precursor cells that exist widely throughout the developing and mature central nervous system and vascular mural cells but not on mature oligodendrocytes, astr...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.23521

    authors: Gotoh H,Wood WM,Patel KD,Factor DC,Boshans LL,Nomura T,Tesar PJ,Ono K,Nishiyama A

    更新日期:2018-12-01 00:00:00

  • In vitro evaluation of reactive astrocyte migration, a component of tissue remodeling in glaucomatous optic nerve head.

    abstract::In order to improve understanding of remodeling events in the glaucomatous optic nerve head, the migration of optic nerve head astrocytes was studied in vitro. Since elevated intraocular pressure is an important stress factor identified in glaucomatous eyes, optic nerve head astrocytes were incubated under physical st...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.1052

    authors: Tezel G,Hernandez MR,Wax MB

    更新日期:2001-05-01 00:00:00

  • Neurons and astrocytes influence the development of purified O-2A progenitor cells.

    abstract::To investigate the possible role of neurons and astrocytes for oligodendrocyte development we prepared a pure population of precursor cells positive for the precursor marker GD3 with the help of fluorescence-activated cell sorting (FACS). Large numbers of highly purified cells were obtained from postnatal day 1 rat br...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.440040603

    authors: Dutly F,Schwab ME

    更新日期:1991-01-01 00:00:00

  • Production, characterization, and efficient transfection of highly pure oligodendrocyte precursor cultures from mouse embryonic neural progenitors.

    abstract::Much current knowledge of oligodendrocyte biology, the myelin-forming cells in the central nervous system, comes from cell culture studies mainly from postnatal rat tissue but mouse cells have been much more difficult to produce in large quantities. We have developed a high yield protocol for production of oligodendro...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.20702

    authors: Pedraza CE,Monk R,Lei J,Hao Q,Macklin WB

    更新日期:2008-09-01 00:00:00

  • Reversible disruption of tight junction complexes in the rat blood-brain barrier, following transitory focal astrocyte loss.

    abstract::Breakdown of the blood-brain barrier is a feature of acute and chronic neurodegenerative changes, yet the relationship between astrocytes and the mature barrier remains unclear. We studied this role of astrocytes in vivo using a gliotoxin and evaluated changes in three vascular tight junction markers. Male Fisher F344...

    journal_title:Glia

    pub_type: 杂志文章

    doi:10.1002/glia.20049

    authors: Willis CL,Leach L,Clarke GJ,Nolan CC,Ray DE

    更新日期:2004-10-01 00:00:00