Abstract:
:Oligodendrocytes from the shiverer mutant mouse are missing most of the myelin basic protein (Mbp) gene. In axon-free cultures, they produce membrane sheets with abnormally assembled microtubule and actin-based structures. This suggests that an Mbp gene product may have an important role in regulating the organization and stability of the wild-type oligodendrocyte cytoskeleton. We now present evidence extending these observations, using cultured oligodendrocytes that carry both the shiverer mutation and the Mbp1 transgene which partially corrects their deficit. Shiverer oligodendrocytes that carry one dose of the Mbp1 transgene abnormally express MBP along major cytoskeletal vein-like structures in processes and sheets. Shiverer oligodendrocytes that carry two doses of the Mbp1 transgene contain two types of membrane sheet regions, i.e. regions filled with aberrant punctate foci of MBP, and regions with normal domains of MBP. Immunocytochemical staining data show that the distribution of cytoskeleton and associated 2',3'-cyclic nucleotide 3'-phosphohydrolase (CNPase) is dependent upon how MBP is organized. Bundling of actin filaments occurs only around MBP domains, and the colocalization of CNPase along microtubular structures also appears to be regulated by MBP domains in sheets. Multinucleated oligodendrocytes are observed, a likely result of the inability of dividing pro-oligodendrocytes to bundle actin filaments. In addition, the ability of MBP to mediate extracellular signals that modulate cytoskeleton appears to be dependent upon MBP's organization. Transduction of the galactocerebroside signaling pathway, which results in the destabilization of microtubules but not actin filaments, occurs only in sheets containing MBP domains. The distribution of MBP, however, does not affect the myelin/oligodendrocyte-specific protein signaling pathway, which results in growth of microtubular structures and extensive destabilization of the actin cytoskeleton.
journal_name
Dev Neuroscijournal_title
Developmental neuroscienceauthors
Dyer CA,Phillbotte T,Wolf MK,Billings-Gagliardi Sdoi
10.1159/000111237subject
Has Abstractpub_date
1997-01-01 00:00:00pages
395-409issue
5eissn
0378-5866issn
1421-9859journal_volume
19pub_type
杂志文章abstract::Birth asphyxia can result in sensory impairment, learning and memory deficits without gross brain injury and severe motor deficits. We developed a model of birth asphyxia resulting in mild neurological injury and cognitive impairment using a long-gestation species with precocial fetal development. Spiny mice (Acomys c...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000251907
更新日期:2009-01-01 00:00:00
abstract::The medial frontal cortex (MFC) is involved in the temporal organization of behaviour. It receives timing information from the master circadian clock in the suprachiasmatic nucleus (SCN), and exhibits daily oscillations in gene expression itself. In this study, we evaluate various properties of circadian rhythms of lo...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000232559
更新日期:2009-01-01 00:00:00
abstract::In vertebrate species, the neuropeptide oxytocin (OT) has been implicated in neural and behavioral development. Although several OT-like peptides have been characterized in invertebrate species, the ontogenesis of the OT-like system has not yet been described in these species. Thus, the aim of the present study was to...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000235942
更新日期:2010-03-01 00:00:00
abstract::Parallel developmental studies of central nervous system myelin proteins and morphology (postnatal days 15-118; P15-118) confirm qualitative similarities but substantial quantitative differences between homozygous mld mice with Billings-Gagliardi and Wolf's 'USA' versus Matthieu's 'Swiss' genetic backgrounds. The USA ...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000112145
更新日期:1991-01-01 00:00:00
abstract::Transient early cerebral laminar organization resulting from normal developmental events has been revealed in human beings through histology and imaging studies. DTI studies have postulated that the fractional anisotropy (FA)-based differentiation of different laminar structures reflects both differing cellular densit...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000229500
更新日期:2009-01-01 00:00:00
abstract::All known actions of cAMP in the brain require cAMP-dependent protein kinase (cAMPdPK), which consists of regulatory (R) and catalytic (C) subunits (R2C2). Using homologous rat cDNAs for all known cAMPdPK subunit isoforms found in the brain (RI alpha, RI beta, RII alpha, RII beta, C alpha, C beta) we observe that, in ...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000112140
更新日期:1991-01-01 00:00:00
abstract::The L-type calcium channel activator +/-Bay K 8644 has recently been shown to provoke self-injurious biting in young mice. Since the serotonergic systems have been implicated in the expression of self-injurious behavior in both humans and animals, the present studies tested whether drugs influencing serotonin systems ...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000066747
更新日期:2002-01-01 00:00:00
abstract::We have previously reported that a developmental axon-sparing striatal injury induced by hypoxia-ischemia results in a diminished adult number of substantia nigra (SN) tyrosine hydroxylase (TH)-positive neurons, in the absence of direct nigral injury. To examine the specific role of striatal injury, we made selective ...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111684
更新日期:1992-01-01 00:00:00
abstract::Developmental changes in gangliosides in the course of neurite outgrowth were examined in dissociated fetal rat cerebral neurons in culture. About a 2-fold increase in ganglioside levels was seen with the progression of neurite formation for up to 24 h in predominantly neuronal cultures. Ganglioside patterns appeared ...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111647
更新日期:1992-01-01 00:00:00
abstract::Insulin binding was measured on crude mitochondrial or plasma membranes prepared from different rat brain regions during postnatal development. In the cerebral cortex and brainstem, insulin binding decreased 60-70% between birth and the adult period. In the cerebellum, insulin binding doubled in the first 10 postnatal...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111863
更新日期:1990-01-01 00:00:00
abstract::Extracts prepared from embryonic, neonatal and adult rat brain were examined for the presence of oligodendroglial mitogens. Brain-derived mitogenic activities were found in all developmental stages with specific activity increasing during neonatal development. Extracts from postnatal day 7 contained the highest specif...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000112301
更新日期:1985-01-01 00:00:00
abstract::Developmental expression of neutral monoglycosylceramides (MGCs) has been examined in rat brain from embryonic day 15 (E15) to postnatal day 30 (P30) and adulthood. To this point, glucosylceramide (GlcCer) is the only MGC that has been characterized in embryonic brain. Galactosylceramide (GalCer) appears at P1, increa...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111201
更新日期:1997-01-01 00:00:00
abstract::Cerebral metabolism is known to be highly dependent upon glucose utilisation. In the neonate, severe hypoglycaemia is now recognized to be associated with subsequent adverse neurodevelopment and in extremis glial and neuronal cell death. However, the level at which hypoglycaemia becomes clinically important is not wel...
journal_title:Developmental neuroscience
pub_type: 杂志文章,评审
doi:10.1159/000112124
更新日期:1994-01-01 00:00:00
abstract::Neuroprotective cold-shock proteins (CSPs) are abundant in the normothermic neonatal rodent brain but decrease with advancing neurodevelopmental age and are low or absent in the adult brain. It has not been established if neurodevelopmental age alters the baseline expression of CSPs in the human brain. Here, we tested...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000493637
更新日期:2018-01-01 00:00:00
abstract::The proximodistal axonal transport of choline acetyltransferase (ChAc) has been studied in the chick sciatic nerve in the absence of any experimental manipulation. The phenomenon utilized by us is a physiological transient fall in the activity of ChAc. This fall occurs in most areas of the chick central nervous system...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000112484
更新日期:1979-01-01 00:00:00
abstract:BACKGROUND:Neonatal hypoxic-ischemic (HI) encephalopathy occurs in 1-4 per 1,000 live term births and can cause devastating neurodevelopmental disabilities. Currently, therapeutic hypothermia (TH) is the only treatment with proven efficacy. Since TH is associated with decreased cerebral metabolism and cerebral blood fl...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000381704
更新日期:2015-01-01 00:00:00
abstract::The activity of glycerophosphorylcholine phosphodiesterases was determined in the mesencephalon, diencephalon, cerebral hemispheres, cerebellum and olfactory bulb during postnatal development from P5 to P70 of rat brain. These activities are low and gradually increase to near adult levels by the end of the first postn...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111882
更新日期:1989-01-01 00:00:00
abstract::Early developmental processes, such as metabolic programming, can provide cues to an organism, which allow it to make modifications that are predicted to be beneficial for survival. Similarly, social play has a multifaceted role in promoting survival and fitness of animals. Play is a complex behavior that is greatly i...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000444015
更新日期:2016-01-01 00:00:00
abstract::α-Synuclein is one of the most abundant proteins in presynaptic terminals. Normal expression of α-synuclein is essential for neuronal survival and it prevents the initiation of apoptosis in neurons through covalent cross-linking of cytochrome c released from mitochondria. Exocytosis of α-synuclein occurs with neuronal...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000321342
更新日期:2010-01-01 00:00:00
abstract::In cultured glial cells from chick embryonic brain, both influx and efflux of 42K+ and 22Na+ are dependent on the external Ca++ and concentration ([Ca++]0) between 2 and 0.1 mM although intracellular concentrations of K+ ([K+]i) and Na+ ([Na+]i) do not change. Only a reduction of [Ca++]0 below 0.1 mM results in both a...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000112664
更新日期:1982-01-01 00:00:00
abstract::Early developmental treatment of rats with 3,4-methylenedioxymethamphetamine (MDMA) was previously found to cause an abnormal pattern of forebrain serotonergic axon density in adulthood consisting of a cortical hypoinnervation and a striatal hyperinnervation. The present study tested the hypothesis that this reorganiz...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000207497
更新日期:2009-01-01 00:00:00
abstract::The myelin-associated glycoprotein (MAG) is a 100 K-dalton, integral membrane glycoprotein containing 30% carbohydrate that is in central and peripheral myelin sheaths. Recent research on its function during normal myelinogenesis and possible roles in the pathology of demyelinating diseases is reviewed. Emphasis is pl...
journal_title:Developmental neuroscience
pub_type: 杂志文章,评审
doi:10.1159/000112356
更新日期:1983-01-01 00:00:00
abstract::HIV-1 is able to penetrate the developing human central nervous system and induce damage. Clinical and neuropathological observations demonstrate that (a) the virus is transmitted during the late phase of pregnancy or at the time of delivery; (b) the main infected cells within the brain are macrophages, and (c) the me...
journal_title:Developmental neuroscience
pub_type: 杂志文章,评审
doi:10.1159/000112100
更新日期:1994-01-01 00:00:00
abstract::When cells from the cerebellum of late-gestation rats were grown at low density (50-100 cells/mm2) in a three-dimensional culture system, they rapidly expressed morphological and electrophysiological properties of neurons. Growth and differentiation of the population of solitary neurons as a whole was statistically as...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111645
更新日期:1992-01-01 00:00:00
abstract::A leading hypothesis of the cause of neuronal death in Huntington's disease (HD) is excitotoxicity, in which subpopulations of striatal neurons are hypersensitive to glutamate release due to changes in postsynaptic N-methyl-D-aspartate receptors (NMDARs). In the present study we used RT-PCR methods on single cells and...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000091921
更新日期:2006-01-01 00:00:00
abstract::Metabolism of glutamate and glutamine in cultured mouse cerebral cortical astrocytes has been investigated using either radioactively labelled (14C) amino acids or 13C-labelled amino acids combined with NMR spectroscopy of cell extracts and lyophilyzed incubation media. Using [U-13C]glutamate it has been shown that in...
journal_title:Developmental neuroscience
pub_type: 杂志文章,评审
doi:10.1159/000111356
更新日期:1993-01-01 00:00:00
abstract::Prenatal stress has been associated with detrimental outcomes of pregnancy, including altered brain development leading to behavioural pathologies. The neurosteroid allopregnanolone has been implicated in mediating some of these adverse outcomes following prenatal stress due to its potent inhibitory and anxiolytic eff...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000437302
更新日期:2015-01-01 00:00:00
abstract::The gene responsible for the audiogenic seizure (AGS) phenotype in Frings mice, which was identified and originally designated Mass1, is now referred to as Mgr1. Although the function of the gene product is not known, the expression pattern suggests a role in the developing CNS. Hearing impairment is often observed in...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000086712
更新日期:2005-01-01 00:00:00
abstract::Nitric oxide may serve as a retrograde messenger to refine or stabilize synapses in the developing nervous system. Whether this action is dependent upon glutamate and the N-methyl-D-aspartate receptor is not yet established. We have used the patch-cluster system in the intermediate gray layer (IGL) of the rat superior...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111215
更新日期:1997-01-01 00:00:00
abstract::Glutamine synthesis, the major pathway of ammonia detoxification, and the intracellular concentration of organic osmolytes in primary astrocytes and F98 glioma cells were investigated with multinuclear magnetic resonance spectroscopy. Acute exposure to ammonia (3 h incubation with NH4Cl) raised the concentration of gl...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000017339
更新日期:1998-01-01 00:00:00