Abstract:
:AMPA receptors (AMPARs) are responsible for fast excitatory neurotransmission, and their prolonged activation can result in the generation and spread of epileptic seizures. At early stages of postnatal development, the majority of AMPARs are permeable to both Na(+) and Ca(2+) ions. This permeability, which increases neuronal excitability, is due to the lack of the GluA2 subunit, encoded by the GRIA2A gene, and/or the presence of an unedited GluA2 subunit Q/R site (glutamine instead of arginine). Lithium chloride- and pilocarpine-induced status epilepticus (LiCl/Pilo-SE) in rodents represents a model of severe seizures that result in development of temporal lobe epilepsy (TLE). The aim of this study was to determine how LiCl/Pilo-SE induced early in life (at postnatal day 12; P12) alters normal expression of the GRIA2A gene and GluA2 protein. SE was interrupted by an injection of paraldehyde (Para). Control groups were 1) naïve animals, and 2) siblings of SE rats receiving only LiCl and paraldehyde (LiCl/Para). The expression profile of GRIA2A mRNA was determined via qPCR, and GluA2 protein levels were measured by western blotting. The analysis was performed at 3h (protein levels), and then 3-, 6-, 13-, and 60days, following LiCl/Pilo-SE or LiCl/Para injection (i.e. at P12, P15, P18, P25, P72 respectively). Six different brain regions were analyzed: frontal (CXFR), parietal (CXPAR), and occipital (CXOC) cortex, dorsal (HD) and ventral (HV) hippocampus, and thalamus (TH). There was a significant increase in GRIA2A mRNA expression in the CXFR, CXPAR, and CXOC of P18 SE animals. In CXFR and HD, increased expression of GluA2 AMPAR subunit protein was detected, as well as a surge in GRIA2A mRNA and GluA2 protein expression especially at P18. In HD the surge was detected not only during development (P18), but also later in life (P72). Since high levels of GluA2 can be neuroprotective (by decreasing Ca(2+) permeability), our data suggest that the neocortex and dorsal hippocampus are able to activate endogenous antiepileptic mechanisms. A marked decrease in the overall expression of GluA2 protein in the HV in the LiCl/Pilo-SE and LiCl/Para rats, suggests that the HV is predisposed to excitotoxicity, not only during development, but even in adulthood. Interestingly, LiCl in combination with paraldehyde can also strongly alter the normal ontogeny of GRIA2A mRNA as well as GluA2 subunit protein expression.
journal_name
Exp Neuroljournal_title
Experimental neurologyauthors
Szczurowska E,Ergang P,Kubová H,Druga R,Salaj M,Mareš Pdoi
10.1016/j.expneurol.2016.05.039subject
Has Abstractpub_date
2016-09-01 00:00:00pages
97-109issue
Pt Aeissn
0014-4886issn
1090-2430pii
S0014-4886(16)30158-3journal_volume
283pub_type
杂志文章abstract::In order to test the functional implication of herpes simplex virus (HSV) vector-mediated gene transfer after axonal injury, we injected replication-incompetent HSV vectors coding for the anti-apoptotic peptide Bcl-2 and the glial cell-derived neurotrophic factor (GDNF), separately or in combination into ventral spina...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/S0014-4886(03)00334-0
更新日期:2003-12-01 00:00:00
abstract::The monoclonal antibody Py has previously been shown to be a useful marker for subpopulations of neurons in the rat brain. However, the distribution of Py immunoreactivity in other regions of the CNS and PNS is not known. Here, we present a light and electron microscopic investigation into the distribution of Py immun...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.1997.6509
更新日期:1997-07-01 00:00:00
abstract::Cats were kindled in the amygdala. After completion of kindling, their EEG was monitored almost continuously by a computer system which allowed the detection of spontaneous seizures and the quantification of interictal spikes. The relationships between seizures triggered by stimulation, spontaneous seizures, and inter...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/0014-4886(84)90223-1
更新日期:1984-05-01 00:00:00
abstract::The members of the tenascin family are involved in a number of developmental processes, mainly by their ability to regulate cell adhesion. We have here studied the distribution of mRNAs for tenascin-X, -C, and -R and the closely related molecule tenascin/J1 in the olfactory system and spinal cord. The olfactory bulb a...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.2000.7543
更新日期:2000-12-01 00:00:00
abstract::Using a measure of nonlinear dynamical changes we term marginal predictability, we report evidence of robust changes in this parameter on scalp EEG in a cohort of patients with medically refractory mesiobasal temporal lobe epilepsy (MBTLE). In the baseline (interictal) state there are distinct differences in this nonl...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/s0014-4886(03)00354-6
更新日期:2003-11-01 00:00:00
abstract::Human immunodeficiency virus (HIV) patients treated with nucleoside reverse transcriptase inhibitors (NRTIs), have been known to develop neuropathic pain. While there has been a major shift away from some neurotoxic NRTIs in current antiretroviral therapy, a large number of HIV patients alive today have previously rec...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2016.04.012
更新日期:2016-07-01 00:00:00
abstract::Apnea of prematurity (AoP) is associated with severe and repeated episodes of arterial oxygen desaturation (intermittent hypoxia - IH), which in turn increases the number of apneas. So far, there is no data addressing whether IH leads to sex-specific respiratory consequences, neither if drugs targeting AoP are more ef...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2019.112985
更新日期:2019-10-01 00:00:00
abstract::The neuronal basis for neurological deficits in infantile hydrocephalus is poorly understood. Changes in the dendritic architecture of pyramidal cells of the auditory cortex have been measured at 21 days after birth in H-Tx rats. Tissue was prepared by the rapid Golgi method from hydrocephalic and control litter-mates...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.1996.0161
更新日期:1996-10-01 00:00:00
abstract::Acute exposure of peripheral axons to the free radical Nitric Oxide (NO) may trigger conduction block and, if prolonged, Wallerian degeneration. It was hypothesized that this neurotoxic effect of NO may be due primarily to energy restriction by inhibition of mitochondrial respiration. We compared the neurotoxic effect...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2008.03.022
更新日期:2008-07-01 00:00:00
abstract::Ciliary neurotrophic factor (CNTF) and brain-derived neurotrophic factor (BDNF) have been shown both in vitro and in vivo to support the survival and differentiation of developing chick or rat motoneurons. To explore the potential use of these and other neurotrophic factors as therapeutic agents in human motoneuron di...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.1994.1198
更新日期:1994-12-01 00:00:00
abstract::Five female adult Macaca nemestrina monkeys, given a unilateral intracarotid (ic) infusion of 2.3-3.5 mg of MPTP-HCl, were studied for 6-8 years. Two to 3 days after MPTP, the animals developed hemiparkinsonism characterized by rigidity and flexed posture of the arm contralateral to the side of infusion with episodes ...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.1998.6845
更新日期:1998-08-01 00:00:00
abstract::A sample of 504 single neurons isolated in three curvilinear arrays of 10 closely spaced tracks in primary somatosensory and in pericruciate sensorimotor cortex was studied in two awake, restrained domestic cats. Modality sensitivity and receptive field size and location were assessed for each neuron, along with respo...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/0014-4886(90)90065-z
更新日期:1990-01-01 00:00:00
abstract::Cortical and striatal cultures were prepared from the same embryonic rat brains and maintained in identical culture conditions. In this way, the intrinsic, genetically imprinted differences determine the responses of cortical and striatal neurons in comparative studies. Cortical and striatal neurons differed in their ...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.2000.7576
更新日期:2001-03-01 00:00:00
abstract::Fifteen male mice (C57/Bl6J) were fed the liquid diet "Stardit" supplemented with vitamins together with phenytoin for 8 weeks; experimental animals and controls were pair-fed. After 8 weeks of treatment, the anesthetized animals were perfused with 3.5% glutaraldehyde. Tissue samples of the cerebral cortex (area 3), c...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/0014-4886(86)90026-9
更新日期:1986-01-01 00:00:00
abstract::We have previously shown that the expression of voltage-operated Ca(++) channels (VOCCs) is highly regulated in the oligodendroglial lineage and is essential for proper oligodendrocyte progenitor cell (OPC) migration. Here we assessed the role of VOCCs, in particular the L-type, in oligodendrocyte maturation. We used ...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2014.12.012
更新日期:2015-03-01 00:00:00
abstract::Quisqualate (Quis) and other excitotoxins such as ibotenate and N-methyl aspartate, have been used to destroy neurons in the area of the nucleus basalis magnocellularis (NBM) in order to study the relationship between loss of cholinergic neurons in the basal forebrain and various behavioral deficits, including learnin...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.1994.1046
更新日期:1994-03-01 00:00:00
abstract::In the neocortex, the effectiveness of potential transplantation therapy for diseases involving neuronal loss may depend upon whether donor neurons can reestablish the precise long-distance projections that form the basis of sensory, motor, and cognitive function. During corticogenesis, the formation of these connecti...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.1996.0088
更新日期:1996-05-01 00:00:00
abstract::After spinal cord injury (SCI), apoptosis of neurons and oligodendrocytes is associated with axonal degeneration and loss of neurological function. Recent data have suggested a potential role for FAS death receptor-mediated apoptosis in the pathophysiology of SCI. In this study, we examined the effect of FAS deficienc...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2005.08.020
更新日期:2005-12-01 00:00:00
abstract::An autoradiographic method is described for detecting changes in ornithine decarboxylase in axotomized superior cervical ganglion neurons of rats using [3H]difluoromethylornithine. An increase in binding to neurons was seen at 12 h and 1 day after crushing the postganglionic nerves. Binding returned to control values ...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/0014-4886(86)90097-x
更新日期:1986-05-01 00:00:00
abstract::Microglia express cytokines, major histocompatibility (MHC) loci, and several other immunologically important constituents. The aim of this study was to detect immunological responses of microglial cells following allogeneic dopaminergic transplantation using active and adoptive immunizations. Adult inbred Fisher 344 ...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.1996.0151
更新日期:1996-10-01 00:00:00
abstract::In cats anesthetized with nitrous oxide and halothane, ion-selecting microelectrodes were used to monitor changes in the concentration of potassium [K+]0 and calcium [Ca2+]0 in the extracellular compartment of the cerebral cortex during as long as 4 h of continuous stimulation of the cortical surface. At stimulus char...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/0014-4886(83)90220-0
更新日期:1983-02-01 00:00:00
abstract::Nerve growth factor (NGF) is well known to be involved in the development, survival, and maintenance of sympathetic and neural crest-derived sensory neurons in the peripheral nervous system. Over the last 10-15 years, however, the role of NGF as a necessary trophic substrate for magnocellular cholinergic neurons in th...
journal_title:Experimental neurology
pub_type: 杂志文章,评审
doi:10.1016/0014-4886(88)90231-2
更新日期:1988-12-01 00:00:00
abstract::Altered activity in one of the output nuclei of the basal ganglia, the internal segment of the globus pallidus, is known to play an important role in the generation of parkinsonism. These inactivation studies tested the hypothesis that altered activity in the second major output nucleus of the basal ganglia, the subst...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1006/exnr.2000.7572
更新日期:2001-02-01 00:00:00
abstract::Posttraumatic stress disorder (PTSD), chronic psychological stress, and major depressive disorder have been found to be associated with a significant decrease in glial fibrillary acidic protein (GFAP) immunoreactivity in the hippocampus of rodents. Cotinine is an alkaloid that prevents memory impairment, depressive-li...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2017.06.016
更新日期:2017-09-01 00:00:00
abstract::This study characterizes the impact of increasing-intensity treadmill exercise (iTR) on noradrenergic (NE) and serotonergic (5HT) modulation of neuropathic pain. Following sciatic nerve transection and repair (SNTR) rats developed significant mechanical and thermal hyperalgesia that was partially prevented by iTR perf...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2017.10.007
更新日期:2018-01-01 00:00:00
abstract::An important issue in stem cell biology relates to mechanisms of cellular plasticity. Specifically, could any observed multipotency of, e.g., adult stem cells arise from true transdifferentiation or as a result of cell-cell fusion? We studied this issue using a culture paradigm of astrocyte monolayers and multipotent ...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2005.11.016
更新日期:2006-03-01 00:00:00
abstract::Grafts of embryonic ventral mesencephalic tissue placed in the striatum of 6-hydroxydopamine-lesioned rats survive, and make and receive connections to and from the host brain. The dopaminergic neurons of the graft can grow processes into the host brain, and thereby alleviate many of the behavioral deficits of this fo...
journal_title:Experimental neurology
pub_type: 杂志文章,评审
doi:10.1006/exnr.1996.0141
更新日期:1996-09-01 00:00:00
abstract::In this study we investigated whether the link between mitochondrial dysfunction and deregulation of Ca(2+) homeostasis preceding excitotoxic cell death is mediated by cellular deenergization. Glycolytic and/or mitochondrial ATP synthesis was inhibited with 2-deoxy-D-glucose (2DG) and oligomycin, respectively. Changes...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/s0014-4886(03)00243-7
更新日期:2003-10-01 00:00:00
abstract::We recently described an experimental model of spinal cord contusive injury in the rat in which a modified weight-drop apparatus is used to generate reproducible mild, moderate, or severe final functional deficit. We now report several inexpensive alternatives for portions of the original apparatus which allow the pro...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/0014-4886(87)90162-2
更新日期:1987-02-01 00:00:00
abstract::It is widely accepted that the immune system plays important functional roles in regeneration after injury to the spinal cord. Immune response towards injury involves a complex interplay of immune system cells, such as neutrophils, macrophages and microglia, T- and B-lymphocytes. We investigated the influence of the l...
journal_title:Experimental neurology
pub_type: 杂志文章
doi:10.1016/j.expneurol.2012.07.016
更新日期:2012-10-01 00:00:00