Abstract:
:The loss of hippocampal interneurons has been considered as one reason for the onset of temporal lobe epilepsy (TLE) by shifting the excitation-inhibition balance. Yet, there are many different interneuron types which show differential vulnerability in the context of an epileptogenic insult. We used the intrahippocampal kainate (KA) mouse model for TLE in which a focal, unilateral KA injection induces status epilepticus (SE) followed by development of granule cell dispersion (GCD) and hippocampal sclerosis surrounding the injection site but not in the intermediate and temporal hippocampus. In this study, we characterized the loss of interneurons with respect to septotemporal position and to differential vulnerability of interneuron populations. To this end, we performed intrahippocampal recordings of the initial SE, in situ hybridization for glutamic acid decarboxylase 67 (GAD67) mRNA and immunohistochemistry for parvalbumin (PV) and neuropeptide Y (NPY) in the early phase of epileptogenesis at 2 days and at 21 days after KA injection, when recurrent epileptic activity and GCD have fully developed. We show that SE extended along the entire septotemporal axis of both hippocampi, but was stronger at distant sites than at the injection site. There was an almost complete loss of interneurons surrounding the injection site and expanding to the intermediate hippocampus already at 2 days but increasing until 21 days after KA. Furthermore, we observed differential vulnerability of PV- and NPY-expressing cells: while the latter were lost at the injection site but preserved at intermediate sites, PV-expressing cells were gone even at sites more temporal than GCD. In addition, we found upregulation of GAD67 mRNA expression in dispersed granule cells and of NPY staining in ipsilateral granule cells and ipsi- and contralateral mossy fibers. Our data thus indicate differential survival capacity of interneurons in the epileptic hippocampus and compensatory plasticity mechanisms depending on the hippocampal position.
journal_name
Front Cell Neuroscijournal_title
Frontiers in cellular neuroscienceauthors
Marx M,Haas CA,Häussler Udoi
10.3389/fncel.2013.00167subject
Has Abstractpub_date
2013-10-01 00:00:00pages
167issn
1662-5102journal_volume
7pub_type
杂志文章abstract::Mechanical force plays a fundamental role in neuronal development, physiology, and regeneration. In particular, research has shown that force is involved in growth cone-mediated axonal growth and guidance as well as stretch-induced elongation when an organism increases in size after forming initial synaptic connection...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fncel.2015.00359
更新日期:2015-09-16 00:00:00
abstract::Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease, characterized by the progressive loss of motor neurons. The cause of this selective neuronal death is unknown, but transcriptional dysregulation is recently emerging as an important factor. The physical substrate for the regulation of the transc...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fncel.2013.00243
更新日期:2013-12-05 00:00:00
abstract::Gastrointestinal (GI) pain is a common clinical problem, for which effective therapy is quite limited. Sensations from the GI tract, including pain, are mediated largely by neurons in the dorsal root ganglia (DRG), and to a smaller extent by vagal afferents emerging from neurons in the nodose/jugular ganglia. Neurons ...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fncel.2015.00412
更新日期:2015-10-13 00:00:00
abstract::The substantia nigra pars reticulata (SNr) is one of the output nuclei of the basal ganglia (BG) and plays a vital role in movement execution. Death of dopaminergic neurons in the neighboring nucleus, the substantia nigra pars compacta (SNc), leads to Parkinson's disease. The ensuing dopamine depletion affects all BG ...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2019.00417
更新日期:2019-09-13 00:00:00
abstract::The cerebellum is well-established as a primary center for controlling sensorimotor functions. However, recent experiments have demonstrated additional roles for the cerebellum in higher-order cognitive functions such as language, emotion, reward, social behavior, and working memory. Based on the diversity of behavior...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fncel.2019.00441
更新日期:2019-10-04 00:00:00
abstract::The use of human pluripotent stem cells (PSCs) for cell therapy faces a number of challenges that are progressively answered by results from clinical trials and experimental research. Among these is the control of differentiation before transplantation and the prediction of cell fate after administration into the huma...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2012.00002
更新日期:2012-01-27 00:00:00
abstract::The postnatal development of cerebellar climbing fiber (CF) to Purkinje neuron (PN) synapses is characterized by a substantial pruning during the first 3 weeks after birth, switching from multiple- to single-CF innervation. Previous studies suggested that CF maturation is governed by bidirectional changes of synaptic ...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2019.00183
更新日期:2019-05-01 00:00:00
abstract::The malignancy of glioblastoma multiform (GBM), the most common and aggressive form of human brain tumors, strongly correlates with the presence of hypoxic areas, but the mechanisms controlling the hypoxia-induced aggressiveness are still unclear. GBM cells express a number of ion channels whose activity supports cell...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2014.00467
更新日期:2015-01-15 00:00:00
abstract::Accumulating evidence suggests that epigenetic alterations lie behind the induction and maintenance of neuropathic pain. Neuropathic pain is usually a chronic condition caused by a lesion, or pathological change, within the nervous system. Neuropathic pain appears frequently after nerve and spinal cord injuries or dis...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fncel.2018.00158
更新日期:2018-06-07 00:00:00
abstract::Throughout life new neurons are continuously added to the hippocampal circuitry involved with spatial learning and memory. These new cells originate from neural precursors in the subgranular zone of the dentate gyrus, migrate into the granule cell layer, and integrate into neural networks encoding spatial and contextu...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fncel.2013.00145
更新日期:2013-09-06 00:00:00
abstract::Inflammatory cells may contribute to secondary brain injury following cerebral ischemia. The C57Bl/6 mouse strain is known to exhibit a T helper 1-prone, pro-inflammatory type response to injury, whereas the FVB strain is relatively T helper 2-prone, or anti-inflammatory, in its immune response. We tested whether stro...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2014.00365
更新日期:2014-11-19 00:00:00
abstract::Cortical malformations are often associated with pharmaco-resistant epilepsy. Alterations in hyperpolarization-activated, cyclic nucleotide-gated, non-specific cation (HCN) channels have been shown to contribute to malformation associated hyperexcitability. We have recently demonstrated that expression of HCN channels...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2017.00109
更新日期:2017-04-19 00:00:00
abstract::Increasing evidence suggest that astrocytes significantly modulate neuronal function at the level of the tripartite synapse both in physiological and pathophysiological conditions. The global control of the astrocytic syncytium over neuronal networks, however, is still less recognized. Here we examined astrocytic sign...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2015.00215
更新日期:2015-06-18 00:00:00
abstract::Microglia are the resident immune cells of the brain and react quickly to changes in their environment with transcriptional regulation and morphological changes. Brain tissue injury such as ischemic stroke induces a local inflammatory response encompassing microglial activation. The change in activation status of a mi...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2018.00106
更新日期:2018-04-19 00:00:00
abstract::Heterotrimeric G-proteins mediate a variety of cellular functions, including signal transduction in sensory neurons of the olfactory system. Whereas the Gα subunits in these neurons are well characterized, the gene transcript expression profile of Gβγ subunits is largely missing. Here we report our comprehensive expre...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2013.00084
更新日期:2013-06-04 00:00:00
abstract::Long non-coding (lnc) RNAs are defined as non-protein coding RNAs distinct from housekeeping RNAs such as tRNAs, rRNAs, and snRNAs, and independent from small RNAs with specific molecular processing machinery such as micro- or piwi-RNAs. Recent studies of lncRNAs across different species have revealed a diverse popula...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fncel.2013.00168
更新日期:2013-10-02 00:00:00
abstract::Frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS) are believed to represent the different outcomes of a common pathogenic mechanism. However, while researchers have intensely studied the involvement of motor neurons in the ALS/FTD syndrome, very little is known about the function of hippocampal neu...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2016.00216
更新日期:2016-09-20 00:00:00
abstract::Synaptic plasticity of the neuronal circuits associated with feeding behavior is regulated by peripheral signals as a response to changes in the energy status of the body. These signals include glucose, free fatty acids, leptin and ghrelin and are released into circulation, being able to reach the brain. Ghrelin, a sm...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fncel.2019.00205
更新日期:2019-05-27 00:00:00
abstract::Loud sound exposure exacerbates aminoglycoside ototoxicity, increasing the risk of permanent hearing loss and degrading the quality of life in affected individuals. We previously reported that loud sound exposure induces temporary threshold shifts (TTS) and enhances uptake of aminoglycosides, like gentamicin, by cochl...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2015.00130
更新日期:2015-04-14 00:00:00
abstract::Sensory perception is fundamental to everyday life, yet understanding of human sensory physiology at the molecular level is hindered due to constraints on tissue availability. Emerging strategies to study and characterize peripheral neuropathies in vitro involve the use of human pluripotent stem cells (hPSCs) differen...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2020.600895
更新日期:2020-12-04 00:00:00
abstract::Bone marrow-derived mononuclear cells (BM-MNCs) were shown to improve the outcome in animal stroke models and clinical pilot studies on BM-MNCs for stroke patients were already conducted. However, relevant aspects of pre-clinical evaluation, such as the use of animals with comorbidities and dose-response studies, were...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2013.00288
更新日期:2014-01-08 00:00:00
abstract::Background: Recent studies have found that rifampicin has neuroprotective properties in neurodegenerative diseases. However, the exact mechanisms of action remain unclear. The nuclear factor erythroid 2-related factor 2 (Nrf2) has been considered a potential target for neuroprotection. In this study, we examined wheth...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2016.00273
更新日期:2016-11-29 00:00:00
abstract::Spontaneous calcium transients are present during early postnatal development in the mouse retina and cochlea, and play an important role in maturation of the sensory organs and neural circuits in the central nervous system (CNS). It is not known whether similar calcium transients occur during postnatal development in...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2019.00186
更新日期:2019-05-07 00:00:00
abstract::Spatially localized proteolysis represents an elegant means by which neuronal activity dependent changes in synaptic structure, and thus experience dependent learning and memory, can be achieved. In vitro and in vivo studies suggest that matrix metalloproteinase and adamalysin activity is concentrated at the cell surf...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fncel.2015.00305
更新日期:2015-08-11 00:00:00
abstract::The etiology of amyotrophic lateral sclerosis (ALS), a fatal motor neuron disorder characterized by progressive muscle weakness and spasticity, remains largely unknown. Approximately 5-10% of cases are familial, and of those, 15-20% are associated with mutations in the gene encoding Cu/Zn superoxide dismutase (SOD1). ...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2016.00117
更新日期:2016-05-09 00:00:00
abstract::Glaucoma is a multifactorial disease and especially mechanisms occurring independently from an elevated intraocular pressure (IOP) are still unknown. Likely, the immune system contributes to the glaucoma pathogenesis. Previously, IgG antibody depositions and retinal ganglion cell (RGC) loss were found in an IOP-indepe...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2016.00140
更新日期:2016-06-01 00:00:00
abstract::Friedreich's Ataxia (FRDA) is an autosomal recessive neurodegenerative disorder, affecting dorsal root ganglia (DRG), cerebellar dentate nuclei and heart. It is caused by a GAA repeat expansion mutation within the frataxin gene (FXN). This impedes FXN transcription resulting in a progressive decrease of the mitochondr...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2018.00188
更新日期:2018-07-17 00:00:00
abstract::Magnocellular neurons in the supraoptic nucleus (SON), which synthesize and release arginine vasopressin (AVP) and oxytocin (OT), express several subtypes of ATP-stimulated purinergic P2X receptors (P2XR) that modulate neuronal activity as well as neurotransmitter and hormone release. However, the physiological impact...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2019.00284
更新日期:2019-06-26 00:00:00
abstract::The Purkinje cell (PC) is among the most complex neurons in the brain and plays a critical role for cerebellar functioning. PCs operate as fast pacemakers modulated by synaptic inputs but can switch from simple spikes to complex bursts and, in some conditions, show bistability. In contrast to original works emphasizin...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章
doi:10.3389/fncel.2015.00047
更新日期:2015-02-24 00:00:00
abstract::There is mounting evidence that oxidative glucose metabolism is impaired in epilepsy and recent work has further characterized the metabolic mechanisms involved. In healthy people eating a traditional diet, including carbohydrates, fats and protein, the major energy substrate in brain is glucose. Cytosolic glucose met...
journal_title:Frontiers in cellular neuroscience
pub_type: 杂志文章,评审
doi:10.3389/fncel.2018.00274
更新日期:2018-08-31 00:00:00