Abstract:
:Cortical dysplasia (CD) is now recognized as one of the major causes of pediatric focal neocortical epilepsy, and surgical procedures have been considered early in life. However, the mechanisms involved in seizure generation and intractability in these patients are still unknown. We analyzed with immunocytochemistry for various antibodies the brain tissue from 4 children (10 months to 6 years old) with focal epilepsy due to focal CD in order to study the inhibitory and excitatory circuits in dysplastic areas. Our group had similar histopathological and clinical characteristics. In all patients we found areas of cortical disorganization with dysplastic neurons and balloon cells. We studied distributions of glial cells with glial fibrillary acidic protein (GFAP) and neurons with microtubule-associated protein 2 (MAP-2). Gliosis was present in all cases, and GFAP stained also some balloon cells. Dysplastic neurons were darkly stained by MAP-2, and we also found balloon cells weakly stained with MAP-2 in the same areas where GFAP was positive, suggesting coexpression of neuronal and glial markers in some of these cells. There was an increased expression of glutamate receptors, especially GluR2/3, but also N-methyl-D-aspartate receptors in dysplastic cortex. The inhibitory circuit does not seem to be decreased, rather we notice an increased amount of glutamate-decarboxylase-positive terminals around some of the big neurons. We discuss the possible role of these findings as mechanisms of epilepsy.
journal_name
Dev Neuroscijournal_title
Developmental neuroscienceauthors
Hilbig A,Babb TL,Najm I,Ying Z,Wyllie E,Bingaman Wdoi
10.1159/000017406keywords:
subject
Has Abstractpub_date
1999-11-01 00:00:00pages
271-80issue
3-5eissn
0378-5866issn
1421-9859pii
17406journal_volume
21pub_type
杂志文章abstract::We have previously shown that a single intracranial injection of apotransferrin (aTf) in neonatal rats produces an accelerated mylinogenesis and increases the expression of certain myelin proteins such as myelin basic protein (MBP). In the present work, we studied the effects of aTf upon oligodendrocyte progenitor cel...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000064945
更新日期:2002-01-01 00:00:00
abstract::The auditory system of the cricket has the unusual ability to respond to deafferentation by compensatory growth and synapse formation. Auditory interneurons such as ascending neuron 2 (AN-2) in the cricket Gryllus bimaculatus possess a dendritic arbor that normally grows up to, but not over, the midline of the prothor...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000322887
更新日期:2011-01-01 00:00:00
abstract::Cell polarity is one of the most basic properties of all normal cells and loss of polarity is a hallmark of cancer. While multiple proteins have been implicated in the maintenance of cell polarity, the functionally related neoplastic tumor suppressors Lethal giant larvae (Lgl), Scribble and Disks large comprise a uniq...
journal_title:Developmental neuroscience
pub_type: 杂志文章,评审
doi:10.1159/000090749
更新日期:2006-01-01 00:00:00
abstract::It has been demonstrated that postweaning social isolation alters dendritic development in the medial prefrontal cortex (mPFC) of the rat. In addition, (-)-deprenyl, a monoamine oxidase B (MAO-B) inhibitor, promotes dendritic growth in prefrontocortical pyramidal cells. This study examined whether prefrontocortical de...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000096413
更新日期:2007-01-01 00:00:00
abstract::The developing retina is characterized by 'retinal waves', spontaneous depolarizations that propagate through a developing network of interneurons and retinal ganglion cells. Although the circuitry underlying retinal waves is well characterized, the secreted factors that are critical for its normal development are not...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000082283
更新日期:2004-01-01 00:00:00
abstract::Previous studies have demonstrated that exposure to ethanol during development delays the rate at which axons in certain central nervous system tracts acquire myelin. This delay appears to be related to an alteration in oligodendrocyte function and not to an aberrancy in axon size or number. The present study was desi...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000112154
更新日期:1991-01-01 00:00:00
abstract::Striatal neurons are highly vulnerable to hypoxia-ischemia (HI) in term newborns. In a piglet model of HI, striatal neurons develop oxidative stress and organelle disruption by 3-6 h of recovery and ischemic cytopathology over 6-24 h of recovery. We tested the hypothesis that early treatment with the antioxidants EUK-...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000327243
更新日期:2011-01-01 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::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
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journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000017429
更新日期:2000-01-01 00:00:00
abstract::The long noncoding RNA MSNP1AS (moesin pseudogene 1, antisense) is a functional element that was previously associated with autism spectrum disorder (ASD) with genome-wide significance. Expression of MSNP1AS was increased 12-fold in the cerebral cortex of individuals with ASD and 22-fold in individuals with a genome-w...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000453258
更新日期:2016-01-01 00:00:00
abstract::Central nervous system (CNS) stem cells require epidermal growth factor (EGF) to survive and express glial-specific proteins (GSPs) under its influence. EGF and its receptor (EGF-R) therefore are involved in gliogenesis. We hypothesize that EGF selectively modulates GSP expression in pluripotential CNS cells and this ...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000048699
更新日期:2001-01-01 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::Systemic creatine (Cr) supplementation increases brain phosphocreatine (PCr) and prevents hypoxic seizures in 15-day-old rabbits. Between 5 and 30 days of age during normal development, rabbit gray matter mitochondrial creatine kinase (Mi-CK) increases 400% while cytosolic CK (BB-CK) increases 60%. In white matter, bo...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000017473
更新日期:2000-09-01 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::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::Neuroblastoma is a childhood cancer caused by the transformation of sympathoadrenal progenitors. By following the formation of tumors in homozygous TH-MYCN mice, an established mouse model of neuroblastoma, we were able to capture transformed cells prior to the formation of large, vascularized tumors in order to deter...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000365281
更新日期:2014-01-01 00:00:00
abstract::The neonatal brain appears to be selectively vulnerable to oxidative stress. Several potential mechanisms associated with altered reactive oxygen species metabolism would explain the increased susceptibility. They include increased accumulation of hydrogen peroxide with subsequent neurotoxicity. This enhanced neurotox...
journal_title:Developmental neuroscience
pub_type: 杂志文章,评审
doi:10.1159/000046143
更新日期:2001-01-01 00:00:00
abstract::Apoptosis is a controlled form of cell death that participates in the demise of neuronal cells during development, neurodegenerative disorders and exposure to neurotoxic agents. In recent years, the mitochondria have emerged as being pivotal in controlling apoptosis. They house a number of apoptogenic molecules that a...
journal_title:Developmental neuroscience
pub_type: 杂志文章,评审
doi:10.1159/000017460
更新日期:2000-09-01 00:00:00
abstract::This study analyzed the role of dopamine D1 and D2 receptors in methylphenidate (MPH) conditioned place preference (CPP) in adolescent male and female rats, in addition to the role of these receptors in the effects of MPH on brain-derived neurotrophic factor (BDNF) in the dorsal striatum and nucleus accumbens. Using a...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000360636
更新日期:2014-01-01 00:00:00
abstract::Developing neurons synthesize substantial quantities of membrane phospholipids in producing new synapses. We investigated the effects of maternal uridine (as uridine-5'-monophosphate) and docosahexaenoic acid supplementation on pups' brain phospholipids, synaptic proteins and dendritic spine densities. Dams consumed n...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000193394
更新日期:2009-01-01 00:00:00
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...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111237
更新日期:1997-01-01 00:00:00
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journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000069363
更新日期:2002-01-01 00:00:00
abstract::The cytoskeleton of a newly isolated mouse embryo brain-derived cell line and of dissected mesencephalon-rhombencephalon samples of the 10- to 11-day-old mouse embryo, constituted of a ventricular zone only, has been examined by immunocytochemistry, electrophoretic separation and Western blotting techniques. In accord...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111612
更新日期:1987-01-01 00:00:00
abstract::Myelin-associated oligodendrocytic basic protein (MOBP) and myelin basic protein (MBP) share many structural similarities. MOBP is synthesised by mature oligodendrocytes and localised at the major dense line (MDL), suggesting a role in the myelin compaction process. The shiverer mouse, a deletion mutant of the myelin ...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000017364
更新日期:1999-01-01 00:00:00
abstract::Protein synthetic activity of anterior hypothalamic and neocortical brain slices from androgenized neonatal female rats was studied in vitro in an attempt to clarify the mechanism of action of testosterone on the developing hypothalamus. The short-term effects of testosterone propionate injections of the animals on th...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000112449
更新日期:1979-01-01 00:00:00
abstract::L-Ornithine decarboxylase (ODC), the rate-limiting enzyme of polyamine biosynthesis and thus a unique marker of the proliferation and maturation processes, has been localized by means of immunohistochemistry in the human central nervous system. The enzyme protein has not only been found in the developing nervous syste...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111320
更新日期:1993-01-01 00:00:00
abstract::Maternal infection during pregnancy increases the risk of neurobehavioral problems in offspring. Evidence from rodent models indicates that the maternal immune response to infection can alter fetal brain development, particularly in the hippocampus. However, information on the effects of maternal viral infection on fe...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000486850
更新日期:2018-01-01 00:00:00
abstract::Neural stem cells are attracting enormous attention in regenerative medicine due to their ability to self-renew and differentiate into the cell lineages that constitute the central nervous system. However, little is known about the mechanism underlying the regulation of their redox environment, which is essential for ...
journal_title:Developmental neuroscience
pub_type: 杂志文章
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更新日期:2018-01-01 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