Abstract：
:During the normal course of neuronal differentiation gangliosides undergo marked changes in both quantity and quality. These changes, i.e. several-fold increase in concentration and appearance of the gangliotetraose family, have been observed both in vivo and in neuronal cell cultures. In addition to these naturally occurring (endogenous) manifestations, exogenously administered gangliosides have been observed to exert neuritogenic and/or neuronotrophic effects on a variety of neuroblastoma cell lines and primary neuronal culture systems. Unlike the endogenous effects, which appear to require gangliotetraose structures, the structural specificity of the exogenous effect is quite broad. Thus, all of 11 different gangliosides proved neuritogenic with neuro-2A neuroblastoma cells. Furthermore, synthetic sialoglycolipids possessing a beta-ketosidic sialic acid linkage and/or a glyceride-like moiety in place of ceramide all caused enhanced neurite outgrowth in neuro-2A, PC12, and embryonic chick dorsal root ganglia. A derivative of GM1 lacking the negative charge was also active in the same 3 systems. These results point to general perturbation of the membrane, probably a physical-chemical effect, in a manner which triggers intracellular events leading to differentiation. In contrast to these in vitro results, use of the above GM1 derivative in two in vivo models proved ineffective in maintaining the level of cholinergic markers that were preserved by GM1 in lesioned brains. These results point to fundamentally different mechanism for the trophic effects of administered gangliosides in vivo and in vitro.
journal_name
Acta Neurobiol Exp (Wars)journal_title
Acta neurobiologiae experimentalisauthors
Ledeen RW,Wu G,Cannella MS,Oderfeld-Nowak B,Cuello ACsubject
Has Abstractpub_date
1990-01-01 00:00:00pages
439-49issue
4-5eissn
0065-1400issn
1689-0035journal_volume
50pub_type
杂志文章,评审abstract：:In four dogs instrumental defensive conditioned reflexes to direct electrical stimulation of the hippocampus were elaborated. After reaching 60 percent CR performance, unreinforced stimulations of several limbic structures were given to test generalization. Positive generalization was more frequent than negative one. ...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1981-01-01 00:00:00
abstract：:Transcranial magnetic stimulation was carried out in 30 healthy subjects, aged 20 to 55 and 156 to 180 cm tall, in whom cortical excitability threshold was determined for musculus (m.) abductor digiti minimi (ADM) and m. extensor digitorum brevis (EDB). The lowest stimulus intensity causing in the muscle a reproducibl...
journal_title：Acta neurobiologiae experimentalis
pub_type： 临床试验,杂志文章
doi：
更新日期：1998-01-01 00:00:00
abstract：:In the present communication, a possible role of perceptual displacements of stimulus elements in the occurrence of visual illusions of extent has been considered. In psychophysical experiments with a single set of Müller-Lyer wings, subjects were asked to place an imaginary reference rectangle into a position that ma...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2013-01-01 00:00:00
abstract：:In psychophysical experiments, subjects matched two spatial intervals of a three-spot stimulus into what appeared to them to be equal. The stimulus was flanked by stripes. The length matching errors increased in proportion to the referent interval of the stimulus and approached 6-12 percent of its length. Also, the er...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：:In the present study the functional role of SH groups in the Ca(2+)-independent K(+)-selective channel activity in the membrane of bovine adrenal gland chromaffin granules has been studied. Ionic channel activity has been estimated using 86Rb+, a K+ analogue, flux measurements. The inhibition of chromaffin granules K+...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：:Lesions in ventromedial part of amygdala impaired neither alimentary instrumental reflexes nor food intake, but impaired predatory behavior. Lesions localized in the more dorsal and lateral part of the amygdala produced disorders in instrumental performance and food intake without changes in predatory attack. Both kin...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1979-01-01 00:00:00
abstract：:Fifteen laboratory born cats were used: seven binocularly deprived, four reared under condition of daily alternating monocular exposure and four controls. At the 7th month of age four of the binocularly deprived cats and all the remaining cats were trained monocularly in a two choice apparatus. In the first stage of t...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1986-01-01 00:00:00
abstract：:The variability of simple actions with response to auditory stimuli was studied under different delay conditions. Subjects reacted as fast as possible or with a defined time delay (from 250 to 750 ms) to a tone switching off by pressing a response-key with the left index finger (controlled by the right hemisphere) or ...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2001-01-01 00:00:00
abstract：:A modified method of injection into the cerebellomedullary (CM) cistern of mice was developed based on fixation of the mouse with a special mask under inhalation anesthesia, and exposure of the sagittal suture of the cranium and midline of the nape to allow us to visualize injection point directly. The accuracy of the...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2013-01-01 00:00:00
abstract：:The hippocampal EEG activity was recorded in male rats during the response-contingent reinforcement of a female. The instrumental response was a bar-pressing on a fixed-ratio-10 reinforcement schedule. The frequency of bar-pressing tends to increase during the succeeding copulatory series. The similar phenomenon was o...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1989-01-01 00:00:00
abstract：:Working memory is an ability to keep information in short-term memory and manipulate them 'on line'. Working memory is also involved in complex frontal executive functions. The role of dopaminergic system in modulating working memory processes in prefrontal cortex is well established. Also the role of serotoninergic r...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2010-01-01 00:00:00
abstract：:Neuron transplantation is considered to be a promising therapeutic method to replace functions lost due to central nervous system (CNS) damage. However, little is known about the extent to which implanted neuron-like cells can develop into mature neurons and acquire essential properties, and especially formation of sy...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2006-01-01 00:00:00
abstract：:The objective of this study was to verify hypothesised changes in event related potentials (visual mismatch negativity, vMMN) in 17 subjects dependent on methamphetamine (MAMP) compared to age and gender matched 17 healthy volunteers. We found a significant correlation between vMMN and duration of methamphetamine abus...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2008-01-01 00:00:00
abstract：:New multichannel descriptors of EEG activity: complexity (omega), total power (zeta) and generalized frequency (phi) were applied to whole night sleep analysis in 11 healthy subjects. The values of omega and phi decreased systematically from waking to slow wave sleep, and increased systematically in consecutive NREM-R...
journal_title：Acta neurobiologiae experimentalis
pub_type： 临床试验,杂志文章
doi：
更新日期：1996-01-01 00:00:00
abstract：:We used 5 binocularly deprived cats (BD cats), 4 control cats reared also in the laboratory (C cats) and 4 cats reared in a normal environment (N cats). The cats were trained to discriminate an upward or downward-moving light spot versus a stationary spot (detection task) and then an upward versus a downward spot (dir...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：:Trimethyltin, an organic compound of tin, is a potent neurotoxicant of a mechanism of action yet to be uncovered. The neuropathological findings that trimethyltin causes selective hippocampal damage with several unique features, highly reminiscent of Ammon's horn sclerosis as a final result, have raised the possibilit...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章,评审
doi：
更新日期：1996-01-01 00:00:00
abstract：:The intergeniculate leaflet (IGL) of the thalamus constitutes a small but important part of the neural network controlling circadian activity in rodents. It appears that IGL integrates photic cues from retina with non-photic information originating from different nonspecific brain systems. Subsequently, this integrate...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2015-01-01 00:00:00
abstract：:It is well-known that the cholinergic system and the muscarinic cholinergic receptors are associated with cognitive functions. Here we examined whether a non-selective muscarinic receptor antagonist scopolamine affects learning performance and/or synaptic plasticity during the memory consolidation period. Adult male W...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2014-01-01 00:00:00
abstract：:The relationship between the development of sustained attention and the ability to inhibit responding to external stimuli was investigated in seventy five children, 8, 10 and 12 years old. An important period in the development of both functions is between 8 and 10 years of age. A positive correlation was found betwee...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1989-01-01 00:00:00
abstract：:It is well known that the fetal ethanol exposure and prenatal stress may have adverse effects on brain development. Interestingly, some morphological and functional recovery from their teratogenic effects that take place during brain maturation. However, mechanisms that underlie this recovery are not fully elucidated....
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2019-01-01 00:00:00
abstract：:The frequency of obturator nerve damage due to pelvic diseases, fractures or gynecologic procedures is uncertain. In the present study, we investigated the effect of FK506, a potent macrolide antibiotic and immunosuppresant, on obturator nerve recovery at morphological and functional levels. Forty female Wistar rats w...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2008-01-01 00:00:00
abstract：:The influence of bilateral injections of serotonin (5-HT) and methysergide (MET) to antero-medial hypothalamus (HA) on carbachol-induced emotional-defensive behavior was investigated. Earlier (15 min) stimulation of 5-HT receptors in HA region by 5-HT injections evoked a decrease in the level of vocal response (number...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1985-01-01 00:00:00
abstract：:Stroke is the second leading cause of death worldwide, affecting about 240 people a day in South Africa and leaving survivors with residual disabilities. At the moment, there is no clinically approved neuroprotective product for stroke but the consumption of plant polyphenols has been suggested to offer some protectio...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：10.21307/ane-2017-040
更新日期：2017-01-01 00:00:00
abstract：:Poly (lactide‑co‑glycolide) (PLGA) nanoparticles (NPs) are biodegradable carriers that participate in the transport of neuroprotective drugs across the blood brain barrier (BBB). Targeted brain‑derived neurotrophic factor (BDNF) delivery across the BBB could provide neuroprotection in brain injury. We tested the neuro...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2020-01-01 00:00:00
abstract：:The effects of unilateral ablation of the cortical motor forelimb area on instrumental avoidance responses consisting of lifting the forelimb and holding it within a 4 cm wide "safety zone" were studied in dogs. It was found that the surgery irreversibly impaired the search for the safety zone, while the ability to ma...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1979-01-01 00:00:00
abstract：:This study aimed to provide a simple way to approach group differences by independent component analysis when researching functional connectivity changes of resting-state network in brain disorders. We used baseline resting state functional magnetic resonance imaging from the Alzheimer's disease neuroimaging initiativ...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：10.21307/ane-2017-028
更新日期：2016-01-01 00:00:00
abstract：:Neostriatal afferents from the primary visual cortex in rats were studied using dextran-biotin, biocytin, and Fluoro-Gold. The area V1 was found to project only to a dorsomedial, longitudinal region of neostriatum (NS), bordering on the lateral ventricle and subcortical white matter. The preterminal fibres in the NS f...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1995-01-01 00:00:00
abstract：:Cholinesterase inhibitors are currently the mainstream of symptomatic treatment of patients with Alzheimer's disease. The response to treatment with cholinesterase inhibitors is clinically difficult to predict. Several demographic, clinical and biological variables have been proposed as pretreatment predictors of long...
journal_title：Acta neurobiologiae experimentalis
pub_type： 临床试验,杂志文章
doi：
更新日期：2007-01-01 00:00:00
abstract：:In the filled-space (or Oppel-Kundt) illusion, the filled part of the stimulus for most observers appears longer in comparison with the empty one. In the first two experimental series of the present study, we investigated the illusory effect as a function of continuous filling (by a shaft-line segment) of the referenc...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：10.21307/ane-2017-048
更新日期：2017-01-01 00:00:00
abstract：:The effects of electrical stimulation and electrolytic lesions of the posterior part of the hippocampus on acquisition of the active avoidance response (AAR) in shuttle-box were studied in 35 cats. Both weak or strong hippocampal stimulation applied simultaneously with conditioned stimulus (CS) facilitated the acquisi...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1976-01-01 00:00:00
