Abstract:
:Proper eye formation depends on specific interactions between neural and ectodermal tissues coupled with temporally distinct gene expression and a regulated sequence of signaling events. The homeobox gene Pax6 is vitally important to the entire process of eye development in both vertebrates and invertebrates. Pax6 expression for the retina anlage has been shown to be indispensable in the development of various retinal cells. Here, we report that Pax6 expression in neural tissue plays an important role in lens development. Expression of a dominant-negative version of Pax6 isoform that lacks 5a-exon sequence in developing optic vesicles (OV) of chick embryos led to arrest of lens development at the lens vesicle stage as well as optic cup deformation. To gain insights into the molecular events underlying deformed lens formation, we examined the expression of several transcription factors in the lens of Pax6-negative-OV eye. Importantly, L-Maf was downregulated while c-Maf was found normal in deformed lens. We detected a downregulation of fibroblast growth factor (FGF8) in the neural tissue. Our in vivo experiments suggest that Pax6 in neural retina regulates FGF8 expression, which may maintain L-Maf expression in the lens to be essential for later lens fiber differentiation.
journal_name
Dev Neuroscijournal_title
Developmental neuroscienceauthors
Reza HM,Yasuda Kdoi
10.1159/000082273keywords:
subject
Has Abstractpub_date
2004-01-01 00:00:00pages
318-27issue
5-6eissn
0378-5866issn
1421-9859pii
82273journal_volume
26pub_type
杂志文章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::Uncertainty reigns over whether or not glutamate uptake in astrocytes leads to strong stimulation of glucose utilization, measured as accumulation of radioactive deoxyglucose-6-phosphate. This is an important issue, not only because glutamate is the major excitatory transmitter, but also because it has been postulated...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000017329
更新日期:1998-01-01 00:00:00
abstract::Necrotizing enterocolitis (NEC) increases the risk of brain injury and impaired neurodevelopment. Rapid brain maturation prior to birth may explain why preterm brains are particularly vulnerable to serious infections. Using pigs as models, we hypothesized that preterm birth was associated with altered blood-cerebrospi...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000488979
更新日期:2018-01-01 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::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 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::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::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::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
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::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::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 postnatal developmental expression and the distribution of the glutamate transporters (GLAST, GLT-1 and EAAC1) were analyzed in rat vestibular nuclei (VN), at birth and during the following 4 weeks. Analyses were performed using reverse transcriptase-polymerase chain reaction and immunoblotting of GLAST, GLT-1 and...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000073510
更新日期:2003-09-01 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::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::Traumatic brain injury (TBI) is predominantly a clinical problem of young persons, resulting in chronic cognitive and behavioral deficits. Specifically, the physiological response to a diffuse biomechanical injury in a maturing brain can clearly alter normal neuroplasticity. To properly evaluate and investigate develo...
journal_title:Developmental neuroscience
pub_type: 杂志文章,评审
doi:10.1159/000094163
更新日期:2006-01-01 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::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::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::In adult rats, kainic acid-induced status epilepticus markedly reduces GluR2 (the alpha-amino-3-hydroxy-5-methyl-4-isoxazole-propionic acid, AMPA subunit that limits Ca2+ permeability), receptor mRNA in the vulnerable CA3 and may contribute to delayed neurodegeneration. In rat pups resistant to kainate seizure-induced...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000111257
更新日期:1997-01-01 00:00:00
abstract::Myelinogenesis in different brain parts of trout was studied comparatively by means of histochemistry and biochemistry. A more detailed approach, including ultrastructural analysis, to characterize this important differentiation process, particularly in the optic tectum, revealed a good correlation between the structu...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000112777
更新日期:1981-01-01 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::In this study, the proliferative activity of cultured chick neuroblasts exposed to high or low concentrations of fetal calf serum (FCS) was investigated. Different experimental evidences showed that the first 2-3 days of culture correspond to a period of neuronal proliferation in our culture conditions, whereas contam...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000112344
更新日期:1983-01-01 00:00:00
abstract::Maternal peptides from the hypothalamic-pituitary-adrenal (HPA) axis rise during human pregnancy. The effects of circulating maternal adrenocorticotropin (ACTH) and beta-endorphin (BE) on human fetal behavior was determined in 135 women during their 32nd week of gestation. Fetal behavior was measured by assessing hear...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000071467
更新日期:2003-01-01 00:00:00
abstract::In the developing brain the majority of neurons migrate from their birthplace to their final destination. This active movement is essential for the formation of cortical layers and nuclei. The impairment of migration does not affect the viability of neurons but often results in abnormal differentiation. The proper mig...
journal_title:Developmental neuroscience
pub_type: 杂志文章,评审
doi:10.1159/000109847
更新日期:2008-01-01 00:00:00
abstract::Reactive oxygen species (ROS) have been reported to affect neural stem cell self-renewal and therefore may be important for normal development and may influence neurodegenerative processes when ROS activity is elevated. To determine if increasing production of superoxide, via activation of NADPH oxidase (Nox), increas...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000350502
更新日期:2013-01-01 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::Neuron-specific enolase (NSE) is a unique form of the glycolytic enzyme, enolase, which, in the brain, is strictly localized in differentiated neurons and neuroendocrine cells. In this report evidence is presented that NSE is first seen in the cell bodies of developing chick auditory and vestibular neurons shortly aft...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000112689
更新日期:1982-01-01 00:00:00
abstract::Ethanol inhibition of L1-mediated cell adhesion may contribute to the spectrum of neurological, behavioral and morphological abnormalities associated with prenatal ethanol exposure. We showed previously that the neuroprotective peptides NAPVSIPQ (NAP) and SALLRSIPA (SAL) antagonize ethanol inhibition of L1 adhesion an...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000084528
更新日期:2005-01-01 00:00:00
abstract::The spontaneously immortalized S16 Schwann cell line expresses higher levels of myelin-associated glycoprotein (MAG) and PO glycoprotein and their messenger RNAs when grown at high density than at low density [Sasagasako et al: J Neurochem 1996;66:1432-1439]. This up-regulation of myelin protein expression at high den...
journal_title:Developmental neuroscience
pub_type: 杂志文章
doi:10.1159/000017409
更新日期:1999-01-01 00:00:00