Abstract:
:In some cells, the development of voltage-gated channels requires synaptic input, while in others it does not. Here we investigate whether the sodium and potassium currents in the skeletal muscle of zebrafish sofa potato (sop(-/-)) mutants develop normally. Zebrafish sop(-/-) mutants do not express nicotinic acetylcholine receptors at neuromuscular junctions, and therefore do not exhibit synaptic activity in muscle. We find that in both red and white muscle fibers, sop(-/-) mutants are able to support normal potassium current development during early stages of development [1-3 days post fertilization (dpf)], but at 6 dpf the potassium current density is significantly smaller than that in their phenotypically wild-type siblings (sop(+/?)). In contrast, sodium current density is unaffected. The steady-state properties of potassium currents are unaltered in the sop(-/-) mutants, but there is a significant difference in the V(50) of inactivation of sodium currents. This is the first study in zebrafish to investigate activity-dependent mechanisms of ion channel development and our results indicate that some aspects of ion current development in skeletal muscle require synaptic activity, whereas others do not.
journal_name
Dev Neuroscijournal_title
Developmental neuroscienceauthors
Coutts CA,Cunningham ME,Ali DWdoi
10.1159/000207794subject
Has Abstractpub_date
2009-01-01 00:00:00pages
212-22issue
3eissn
0378-5866issn
1421-9859pii
000207794journal_volume
31pub_type
杂志文章abstract::Creatine kinase (CK) isoenzymes, with emphasis on the mitochondrial CK isoenzymes, were characterized and localized in chicken cerebellum. Chicken cerebellum extracts analyzed by two-dimensional gels, using antipeptide antibodies specific for sarcomeric muscle-type mitochondrial CK (Mib-CK) and revealed the presence o...
journal_title:Developmental neuroscience
pub_type: 杂志文章,评审
doi:10.1159/000111452
更新日期:1996-01-01 00:00:00
abstract::Although cortical malformations (CMs) are often associated with epilepsy, the underlying mechanisms are unknown. The reeler mouse is a model of CM with enhanced susceptibility to epileptiform activity, including the in vitro dentate gyrus, a region normally resistant to seizures. In this study, field potential recordi...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000096212
更新日期:2007-01-01 00:00:00
abstract::Neurite outgrowth is dependent on the presence in neurites of assembled microtubules which consist of polymerized tubulin to which microtubule-associated proteins (MAPs) are bound. This study adds to previous evidence of the similarity between the high molecular weight MAPs, MAP1X, MAP1B and MAP5, and explains the dif...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111318
更新日期:1993-01-01 00:00:00
abstract::This study of the molecular forms of acetylcholinesterase in several rat brain regions using sucrose gradient centrifugation has revealed only two major forms throughout postnatal development: the 4S and 10S. In all regions studied (cerebral cortex, cerebellum, caudate nucleus, hippocampus, pons-medulla and superior c...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000112383
更新日期:1980-01-01 00:00:00
abstract::Neurotoxicological studies have indicated that L-glutamate exhibits more pronounced effects on the preoptic area (POA) neurons of male rats than on those of females in the neonatal period. However, no information has previously been available as to whether or not such sexual dimorphism also exists for the effects of g...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000048726
更新日期:2001-01-01 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::In the era of therapeutic hypothermia, reliable preclinical studies are integral to successfully identify neuroprotective strategies to further improve outcomes of encephalopathy at term. We reviewed preclinical neuroprotection studies reported between January 2014 and June 2016 to assess the use of effective temperat...
journal_title:Developmental neuroscience
pub_type: 杂志文章,评审
doi:10.1159/000452859
更新日期:2017-01-01 00:00:00
abstract::We have shown that the developmentally regulated appearance of the two myelin-associated glycoprotein (MAG) polypeptides in normal mouse brain myelin does not reflect the developmental pattern of differential splicing of primary gene transcripts as determined earlier by RNase protection assays. Contrary to expectation...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111857
更新日期:1990-01-01 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::Rabbit central (CNS) and peripheral nervous system (PNS) myelin, as well as nonmyelinating pig oligodendrocytes in culture, were extracted at 0-4 degrees C with the nonionic detergent Triton X-114. The solubilized proteins were partitioned into the detergent-rich and detergent-depleted (aqueous) phases that form upon ...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111935
更新日期:1989-01-01 00:00:00
abstract::The distal segments of the crush-injured and permanently transected sciatic nerve provide models to study Schwann cell activity in the presence and absence of Schwann cell-axonal contact, respectively. We examined the quantity and quality of transcript coding for the myelin-associated glycoprotein (MAG) over a 3-week ...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111832
更新日期:1990-01-01 00:00:00
abstract::Quaking is a neurological mutation leading to pleiotropic phenotypic expression, the most prominent being disturbed myelin formation in the central nervous system (CNS) with minor abnormalities in the peripheral nervous system. Previous immunochemical measurements of glial fibrillary acidic protein (GFAP) revealed a m...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111682
更新日期:1992-01-01 00:00:00
abstract::Choline acetyltransferase (ChAT), the biosynthetic enzyme for acetylcholine metabolism, is expressed in a human cholinergic neuroblastoma cell line; MC-IXC. We demonstrate that ChAT activity is regulated in this cell line by cell density. It is believed that the mechanism of stimulation of enzyme activity involves cel...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111975
更新日期:1988-01-01 00:00:00
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::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::We have previously shown that lipopolysaccharide (LPS) sensitizes the immature rat brain to subsequent hypoxic-ischemic (HI) injury; however, the underlying mechanisms remain unclear. In this study, we examined the role of glucose in the sensitizing effects of LPS and lipoteichoic acid (LTA) in combination with HI in ...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000080713
更新日期:2004-01-01 00:00:00
abstract::The neurochemical effect of postnatal exposure to methadone (METH), undernutrition (UND), and methadone and undernutrition (METH-UND) on the whole brain and cerebellum were examined in 21- and 60-day-old rats. At 21 days, body weight reductions of UND and METH-UND rats exceeded that of the METH animals. However, METH ...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000112698
更新日期:1982-01-01 00:00:00
abstract::The metabolism of [1-13C]D-glucose by astrocytes, neurons and mixed astroglial/neuronal cultures derived from the striatum of fetal rats was studied using NMR. Metabolic activity was studied in resting and depolarized cells (55 mM K+), with dibutyryl cyclic-AMP added to the medium to promote cell differentiation, and ...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111346
更新日期:1993-01-01 00:00:00
abstract::This study investigated the time of expression of two endothelial cell adhesion molecules, ICAM-1/CD54 and PECAM-1/CD31 in the developing postpartum mouse blood-brain barrier (BBB). Immunoultrastructural studies demonstrated that both adhesion molecules are initially expressed primarily on the luminal endothelial cell...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000017352
更新日期:1998-01-01 00:00:00
abstract::The effect of undernutrition on the activity of glutamate decarboxylase (GAD) and choline acetyltransferase (ChAc) (markers for the GABA-ergic and the cholinergic transmitter system, respectively) was studied in various parts of the rat brain at the age of 10, 15 and 21 days, and at day 54 following 33 days of rehabil...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000112551
更新日期:1978-01-01 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
doi:10.1159/000493009
更新日期:2018-01-01 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
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journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000065704
更新日期:2002-01-01 00:00:00
abstract::Rats were exposed to mild hyperoxia and hypoxia by the administration of oxygen/air and nitrogen/air mixtures through plastic tubing held close to their snouts for periods of 3 min. Changes in tissue oxygen were monitored at an implanted carbon paste electrode; local cerebral blood flow (rCBF) at an implanted platinum...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000017298
更新日期:1998-01-01 00:00:00
abstract::Neonatal stroke leads to mortality and severe morbidity, but there is no effective treatment currently available. Erythropoietin (EPO) has been shown to promote cytoprotection and neurogenesis and decrease subventricular zone morphologic changes following brain injury. The long-term cellular response to EPO has not be...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000105473
更新日期:2007-01-01 00:00:00
abstract::Several studies have shown that exogenous gangliosides can stimulate neurite outgrowth (in vitro), accelerate peripheral nerve regeneration (in vivo) and facilitate CNS recovery after lesioning. Experiments were designed to assess the effects of ganglioside administration on neonatal development. Rat neonates received...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000112339
更新日期:1983-01-01 00:00:00
abstract::While extracellular signals play a major role in brain neurogenesis, little is known about the cell cycle machinery underlying mitogen stimulation of precursor proliferation. Current models suggest that the D cyclins function as primary sensors of extracellular mitogens. Here we define the mechanisms by which basic fi...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000082137
更新日期:2004-03-01 00:00:00
abstract::Excitotoxicity plays a key role during insults to the developing brain such as neonatal encephalopathy, stroke, and encephalopathy of prematurity. Such insults affect many thousands of infants each year. Excitotoxicity causes frank lesions due to cell death and gliosis and disturbs normal developmental process, leadin...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000464131
更新日期:2017-01-01 00:00:00
abstract::There is an important unmet need to further improve the outcome of neonatal encephalopathy in term infants. Meta-analyses of large controlled trials now suggest that maternal magnesium sulfate (MgSO4) therapy is associated with a reduced risk of cerebral palsy and gross motor dysfunction after premature birth, but tha...
journal_title:Developmental neuroscience
pub_type: 杂志文章,评审
doi:10.1159/000362206
更新日期:2014-01-01 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