Abstract:
:Mastoparan-7 (Mas-7), an analogue of the peptide mastoparan, which is derived from wasp venom, is a direct activator of Pertussis toxin- (PTX-) sensitive G proteins. Mas-7 produces several biological effects in different cell types; however, little is known about how Mas-7 influences mature hippocampal neurons. We examined the specific role of Mas-7 in the development of dendritic spines, the sites of excitatory synaptic contact that are crucial for synaptic plasticity. We report here that exposure of hippocampal neurons to a low dose of Mas-7 increases dendritic spine density and spine head width in a time-dependent manner. Additionally, Mas-7 enhances postsynaptic density protein-95 (PSD-95) clustering in neurites and activates Gα(o) signaling, increasing the intracellular Ca(2+) concentration. To define the role of signaling intermediates, we measured the levels of phosphorylated protein kinase C (PKC), c-Jun N-terminal kinase (JNK), and calcium-calmodulin dependent protein kinase IIα (CaMKIIα) after Mas-7 treatment and determined that CaMKII activation is necessary for the Mas-7-dependent increase in dendritic spine density. Our results demonstrate a critical role for Gα(o) subunit signaling in the regulation of synapse formation.
journal_name
Neural Plastjournal_title
Neural plasticityauthors
Ramírez VT,Ramos-Fernández E,Inestrosa NCdoi
10.1155/2016/4258171subject
Has Abstractpub_date
2016-01-01 00:00:00pages
4258171eissn
2090-5904issn
1687-5443journal_volume
2016pub_type
杂志文章abstract::The present study investigates whether a combined cognitive and physical training may induce changes in the cortical activity as measured via electroencephalogram (EEG) and whether this change may index a deceleration of pathological processes of brain aging. Seventy seniors meeting the clinical criteria of mild cogni...
journal_title:Neural plasticity
pub_type: 杂志文章,随机对照试验
doi:10.1155/2015/172192
更新日期:2015-01-01 00:00:00
abstract::Increasing research has evidenced that our brain retains a capacity to change in response to experience until late adulthood. This implies that cognitive training can possibly ameliorate age-associated cognitive decline by inducing training-specific neural plastic changes at both neural and behavioral levels. This lon...
journal_title:Neural plasticity
pub_type: 杂志文章,随机对照试验
doi:10.1155/2015/535618
更新日期:2015-01-01 00:00:00
abstract::Sustained activation of NLRP3 inflammasome is closely related to diabetes and stroke. However, it is unknown whether NLRP3 inflammasome plays an essential role in stroke in diabetes. We aim to investigate the effect and the potential mechanism of NLRP3 inflammasome in diabetic mice with cerebral ischemia-reperfusion i...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2018/9163521
更新日期:2018-04-24 00:00:00
abstract::The habituation/cross-habituation test (HaXha) is a spontaneous odor discrimination task that has been used for many decades to evaluate olfactory function in animals. Animals are presented repeatedly with the same odorant after which a new odorant is introduced. The time the animal explores the odor object is measure...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2016/9131284
更新日期:2016-01-01 00:00:00
abstract::Inhibitors of HMG-CoA reductase (statins), widely used to lower cholesterol in coronary heart and vascular disease, are effective drugs in reducing the risk of stroke and improving its outcome in the long term. After ischemic stroke, cardiac autonomic dysfunction and psychological problems are common complications rel...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2015/585783
更新日期:2015-01-01 00:00:00
abstract::Neuropathies are characterized by a complex response of the central nervous system to injuries. Glial cells are recruited to maintain neuronal homeostasis but dysregulated activation leads to pain signaling amplification and reduces the glial neuroprotective power. Recently, we highlighted the property of α7 nicotinic...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2015/396908
更新日期:2015-01-01 00:00:00
abstract::Functional and morphological studies in children affected by Attention Deficit Hyperactivity Disorder (ADHD) suggest a prefrontal cortex (PFc) dysfunction. This cortical region is regulated by subcortical systems including noradrenergic (NEergic), dopaminergic (DAergic), cholinergic, serotonergic, and histaminergic pa...
journal_title:Neural plasticity
pub_type: 杂志文章,评审
doi:10.1155/NP.2004.133
更新日期:2004-01-01 00:00:00
abstract:Background:Bilateral arm training (BAT) has shown promise in expediting progress toward upper limb recovery in chronic stroke patients, but its neural correlates are poorly understood. Objective:To evaluate changes in upper limb function and EEG power after a robot-assisted BAT in chronic stroke patients. Methods:In ...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2018/8105480
更新日期:2018-03-26 00:00:00
abstract::Using functional multineuron imaging with single-cell resolution, we examined how hippocampal networks by themselves change the spatiotemporal patterns of spontaneous activity during the course of emitting spontaneous activity. When extracellular ionic concentrations were changed to those that mimicked in vivo conditi...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2008/108969
更新日期:2008-01-01 00:00:00
abstract::The endocannabinoids N-arachidonoylethanolamide (or anandamide, AEA) and 2-arachidonoylglycerol (2-AG) belong to the larger groups of N-acylethanolamines (NAEs) and monoacylglycerol (MAG) lipid classes, respectively. They are biologically active lipid molecules that activate G-protein-coupled cannabinoid receptors fou...
journal_title:Neural plasticity
pub_type: 杂志文章,评审
doi:10.1155/2016/2426398
更新日期:2016-01-01 00:00:00
abstract::Aging is a complex process strongly determined by genetics. Previous reports have shown that the genome of neuronal cells displays somatic genomic mosaicism including DNA copy number variations (CNVs). CNVs represent a significant source of genetic variation in the human genome and have been implicated in several diso...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2018/2406170
更新日期:2018-06-28 00:00:00
abstract::The GABA-withdrawal syndrome (GWS) is a model of local status epilepticus following the interruption of a chronic GABA infusion into the rat somatomotor cortex. GWS is characterized by focal epileptic electroencephalographic discharges and associated contralateral myoclonus. In neocortical slices obtained from GWS rat...
journal_title:Neural plasticity
pub_type: 杂志文章,评审
doi:10.1155/NP.2000.9
更新日期:2000-01-01 00:00:00
abstract::The concept of a topographical map of the corpus callosum (CC) has emerged from human lesion studies and from electrophysiological and anatomical tracing investigations in other mammals. Over the last few years a rising number of researchers have been reporting functional magnetic resonance imaging (fMRI) activation i...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2013/251308
更新日期:2013-01-01 00:00:00
abstract::Neurogenesis in the hippocampus is influenced by several factors including external stimuli. In addition to their involvement in learning and memory processes, newborn neurons of the dentate gyrus (DG) buffer against the effects of stress. Although the response of these cells to environmental stimuli has been shown, t...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2018/4960869
更新日期:2018-05-22 00:00:00
abstract::Memory is our ability to store and remember past experiences; it is the result of changes in neuronal circuits of specific brain areas as the hippocampus. During memory formation, neurons integrate their functions and increase the strength of their connections, so that synaptic plasticity is improved and consolidated....
journal_title:Neural plasticity
pub_type: 杂志文章,评审
doi:10.1155/2016/5985021
更新日期:2016-01-01 00:00:00
abstract::With the rise in the aging global population, stroke comorbidities have become a serious health threat and a tremendous economic burden on human society. Current therapeutic strategies mainly focus on protecting neurons from cytotoxic damage at the acute phase upon stroke onset, which not only is a difficult way to am...
journal_title:Neural plasticity
pub_type: 杂志文章,评审
doi:10.1155/2020/1969482
更新日期:2020-01-27 00:00:00
abstract::Action observation (AO) allows access to a network that processes visuomotor and sensorimotor inputs and is believed to be involved in observational learning of motor skills. We conducted three consecutive experiments to examine the boosting effect of AO on the motor outcome of the untrained hand by either mirror visu...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2018/8369262
更新日期:2018-04-10 00:00:00
abstract::The plasticity of brain function, especially reorganization after stroke or sensory loss, has been investigated extensively. Based upon its special characteristics, the olfactory system allows the investigation of functional networks in patients with smell loss, as it holds the unique ability to be activated by the se...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2014/140419
更新日期:2014-01-01 00:00:00
abstract::When activated, metabotropic glutamate receptors (mGlus) exert long-lasting changes within the glutamatergic synapses. One mechanism is a tonic effect of downstream signal transduction pathways via sustained activation of mGlu itself. Like many other G protein-coupled receptors (GPCRs), mGlu can exist in a constitutiv...
journal_title:Neural plasticity
pub_type: 杂志文章,评审
doi:10.1155/2017/5125624
更新日期:2017-01-01 00:00:00
abstract:Background:Feedback postural control depends upon information from somatosensation, vision, and the vestibular system that are weighted depending on their relative importance within the central nervous system. Following loss of any sensory component, the weighting changes, e.g., when suffering a vestibular loss, the mo...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2019/4826238
更新日期:2019-02-18 00:00:00
abstract::Several research studies point to the fact that sensory and cognitive reductions like cataracts, deafness, macular degeneration, or even lack of activity after job retirement, precede the onset of Alzheimer's disease. To simulate Alzheimer's disease earlier stages, which manifest in sensory cortices, we used a computa...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2020/8895369
更新日期:2020-10-14 00:00:00
abstract::Adverse early life experiences can negatively affect behaviors later in life. Maternal separation (MS) has been extensively investigated in animal models in the adult phase of MS. The study aimed to explore the mechanism by which MS negatively affects C57BL/6N mice, especially the effects caused by MS in the early pha...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2015/627837
更新日期:2015-01-01 00:00:00
abstract::Measurement of sleep microarchitecture and neural oscillations is an increasingly popular technique for quantifying EEG sleep activity. Many studies have examined sleep spindle oscillations in sleep-disordered adults; however reviews of this literature are scarce. As such, our overarching aim was to critically review ...
journal_title:Neural plasticity
pub_type: 杂志文章,评审
doi:10.1155/2016/7328725
更新日期:2016-01-01 00:00:00
abstract::Dichoptic movie viewing has been shown to significantly improve visual acuity in amblyopia in children. Moreover, short-term occlusion of the amblyopic eye can transiently increase its contribution to binocular fusion in adults. In this study, we first asked whether dichoptic movie viewing could improve the visual fun...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2019/6208414
更新日期:2019-08-28 00:00:00
abstract::Cerebral palsy (CP) has long been investigated to be associated with a range of motor and cognitive dysfunction. As the two most common CP subtypes, spastic cerebral palsy (SCP) and dyskinetic cerebral palsy (DCP) may share common and distinct elements in their pathophysiology. However, the common and distinct dysfunc...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2018/7058953
更新日期:2018-08-15 00:00:00
abstract:Background:Sudden sensorineural hearing loss (SSNHL) is an otologic emergency and could lead to social difficulties and mental disorders in some patients. Although many studies have analyzed altered brain function in populations with hearing loss, little information is available about patients with idiopathic SSNHL. Th...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2020/9460364
更新日期:2020-09-22 00:00:00
abstract::The recent developments of a particular approach to analyzing motor synergies based on the principle of motor abundance has allowed a quantitative assessment of multi-effector coordination in motor tasks involving anticipatory adjustments to self-triggered postural perturbations and in voluntary postural sway. This ap...
journal_title:Neural plasticity
pub_type: 杂志文章,评审
doi:10.1155/NP.2005.119
更新日期:2005-01-01 00:00:00
abstract::Emotionally arousing events are typically better remembered than mundane ones, in part because emotionally relevant aspects of our environment are prioritized in attention. Such biased attentional tuning is itself the result of associative processes through which we learn affective and motivational relevance of cues. ...
journal_title:Neural plasticity
pub_type: 杂志文章,评审
doi:10.1155/2017/6817349
更新日期:2017-01-01 00:00:00
abstract::Despite the fact that astrocytes are the most abundant glial cells, critical for brain function, few studies have dealt with their possible role in neurodegenerative diseases like Parkinson's disease (PD). This article explores relevant evidence on the involvement of astrocytes in experimental PD neurodegeneration fro...
journal_title:Neural plasticity
pub_type: 杂志文章,评审
doi:10.1155/2020/1859431
更新日期:2020-02-07 00:00:00
abstract::Previous studies have demonstrated that amnestic mild cognitive impairment (aMCI) has disrupted properties of large-scale cortical networks based on cortical thickness and gray matter volume. However, it is largely unknown whether the topological properties of cortical networks based on geometric measures (i.e., sulca...
journal_title:Neural plasticity
pub_type: 杂志文章
doi:10.1155/2016/3462309
更新日期:2016-01-01 00:00:00