Abstract：
:During luteolysis in sheep, episodic pulses of oxytocin (OT), contributed by the neurohypophysis and the corpus luteum (CL), stimulate uterine luteolytic pulses of prostaglandin (PG) F2 alpha via endometrial OT receptors. To distinguish relative contributions of neurohypophysial and luteal OT, ovariectomized sheep were given estradiol-17 beta (E) and progesterone (P) to stimulate levels during the cycle. In intact sheep, luteectomy was performed to exclude the CL as a source of OT and to initiate P withdrawal. In ovariectomized sheep, E (1 microgram/h) for 12 to 36 h) superimposed on basal E(0.05 microgram/h), caused a series of 4 to 6 episodes of high frequency pulses of OT, each episode lasting 1 to 2 h at intervals of 3 h, and commencing at 24 h. Withdrawal of P (500 micrograms/h), superimposed on basal E in ovariectomized sheep, or luteectomy in intact sheep, evoked similar episodes of high frequency pulses of OT beginning at 24 h. We conclude that (1) an increase in E levels, or the return of E action following P withdrawal, causes intermittent increases in the frequency of the central OT pulse generator. (2) high frequency pulses of OT initiate subluteolytic levels of uterine PGF2 alpha which trigger a supplemental release of luteal OT; (3) luteal OT amplifies the secretion of uterine PGF2 alpha which initiates luteolysis and causes more luteal OT to be secreted; and (4) in addition to the established hypothalamic-anterior pituitary-gonadal axis for initiating the ovarian cycle (via the gonadotrophins), there is now evidence for a hypothalamic-posterior pituitary-gonadal axis for terminating the ovarian cycle (via OT).
journal_name
Acta Neurobiol Exp (Wars)journal_title
Acta neurobiologiae experimentalisauthors
McCracken JA,Custer EE,Eldering JA,Robinson AGsubject
Has Abstractpub_date
1996-01-01 00:00:00pages
819-32issue
3eissn
0065-1400issn
1689-0035journal_volume
56pub_type
杂志文章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：: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：:Embedment-free electron microscopy (EFEM) is a new method which allows the visualisation of cytoskeleton in whole-mounted cells. In this study we employed EFEM to investigate the structure of cellular scaffolds in glioma C6 cell line. The cells were extracted with Triton X-100 that dissolves phospholipids in the membr...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2000-01-01 00:00:00
abstract：:During paradoxical sleep electrical stimulation of the mesencephalic reticular formation and emotiogenic structures in the mesencephalon and diencephalon produced depression or an increase in the theta rhythm of the hippocampal and entorhinal electrical activity. However, stimulation not involving behavioral arousal d...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1975-01-01 00:00:00
abstract：:It has been found that the pharmacologically active, low molecular products obtained by digestion of telopeptides-deprived type I collagen with bacterial collagenase is a heterogenous mixture of at least 21 peptides of different molecular weight. They contain 3 to 15 amino acid residues. About 80% of them are tripepti...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1992-01-01 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：:The relationship between neocortical high voltage spindle activity (HVS) and the level of arousal (state of vigilance) was investigated in imp-DAK rats. Two groups of single records (6 h and 24 h) and one group of repeated ones (6 h daily for three consecutive days) were analysed. Five levels of arousal (states) were ...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1994-01-01 00:00:00
abstract：:The linear-dynamic-stochastic model of a reaction latency as applied to avoidance experiment is presented. Reactions are classified on the basis of the model into following classes: escape, avoidance, late avoidance, three types of inter-trial responses and "no reaction". The experimental latency distribution is split...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1982-01-01 00:00:00
abstract：:The pattern of GnRH secretion during the follicular phase of the estrous cycle of sheep is characterized by an initial marked change in episodic secretion (increased frequency and decreased amplitude) followed by a massive and sustained discharge-the preovulatory GnRH surge. Studies employing a physiological model for...
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 aim of this study was to investigate the influence of the GABAergic inhibitory neurones on the absolute and increment retinal sensitivity, determined be measuring b-wave threshold of frog electroretinogram (ERG). We found that GABAergic blockade by picrotoxin (PT -noncompetitive GABA antagonist) had no apparent ef...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1991-01-01 00:00:00
abstract：:Response generalization to a novel stimulus occurs when the new stimulus shares common features with the stimulus used in the original learning. Given the many recent studies suggesting that the perirhinal cortex is critical for disambiguating stimuli that share representational/perceptual elements, we hypothesize tha...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2014-01-01 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：:Mutations in the PINK1 gene are responsible for typical symptoms of Parkinson's disease. Using Drosophila melanogaster mutant PINK1B9 and after PINK1 silencing with RNAi using transgenic lines, we observed defects in synapses and behavior. The lack or reduced expression of PINK1 prolonged sleep during the day (nap) an...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2018-01-01 00:00:00
abstract：:The finding of stem/progenitor cells in postnatal bone marrow and umbilical cord blood, opens up a possibility of using stem cells to treat neurologic diseases. There is a controversy, whether intravenously administered human umbilical cord blood cells (HUCBC) migrate to the brain, differentiate and improve recovery a...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2009-01-01 00:00:00
abstract：:Dorsal prefrontal lesions in dogs elicit hyperreactivity in instrumental discrimination and perseveration in trained serial action pattern. Lateral premotor injury causes hyporeactivity in instrumental discrimination and prolongation of activity in the trained serial action pattern. When the dorsal prefrontal area was...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1972-01-01 00:00:00
abstract：:Adult mammalian brain contains a number of specialized neurovascular structures termed "niches" that act as sources of neuronal cells throughout the individual's life. Some of the niches generate neurons to satisfy the need for 'replacement' neurons within the same or closely located brain structures, whereas the othe...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：10.21307/ane-2017-012
更新日期：2016-01-01 00:00:00
abstract：:The superior colliculus has been implicated in visual orientation and localization in several mammalian species. To examine this possibility in rhesus monkeys, we trained monkeys to respond to one of six locations signaled by a small light of 5 s duration that was turned off immediately before they were allowed to res...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1976-01-01 00:00:00
abstract：:In awake rabbits, which received auditory stimuli paired with electric shock to a forelimb, the activity of 229 units were recorded. In 118 units conditioned responses were observed. In 68 units they were excitatory and in 50 units, inhibitory in accordance with the excitatory or inhibitory effect of the reinforcing s...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1973-01-01 00:00:00
abstract：:New features of actual choice behavior and effortful information processing in rats were demonstrated in an eight-arm radial maze through modifications of a matching-to-sample task. Two attempts were allowed for a squad of hooded Sprague-Dawley rats (n=7) for finding a reward in a testing phase of the task. The result...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：:The functions of the central monoamines Norepinephrine (NE) and Serotonin (5HT) can be clarified by the study of behaviors of rats administered selective monoamine toxins. In his home environment the low NE rat has drive deficits and is lethargic, tending to remain in his burrow, but in novel environments this animal ...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1975-01-01 00:00:00
abstract：:Anxiety disorders are a social problem due to their prevalence and consequences. It is crucial to explore the influence of anxiety on cognitive processes. In this study we recorded EEG activity from 73 subjects (35 patients, 38 controls, matched for age and education) during performance of the Continuous Attention Tas...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：10.21307/ane-2017-007
更新日期：2016-01-01 00:00:00
abstract：:A subdivided path in the visual field usually appears longer than an empty path of the same length. This phenomenon, known as the filled/empty or Oppel-Kundt illusion, depends on multiple properties of the visual stimulus, but the functional dependences have not been yet precisely characterized. We studied the illusor...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2010-01-01 00:00:00
abstract：:In the context of cell therapy, the epigenetic status of core stemness transcription factor (STF) genes regulating the cell proliferation/differentiation program is of primary interest. Our results confirmed that in vitro differentiation of the umbilicalcord-blood-derived-neural-stem-cells (HUCB-NSC) coincides with th...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2013-01-01 00:00:00
abstract：:During the first two postnatal weeks postural reflexes were either absent or abortive. First adult-like patterns of reactions were seen at the end of the 3rd week but they could be regularly elicited only by the 6th-9th week. ...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1983-01-01 00:00:00
abstract：:Connnections of the cortical region situated in the medial and lateral walls of the presylvian fissure in the dog were investigated using the method of retrograde HRP transport. The patterns of subcortico-cortical and cortico-cortical projections sho,w that the cortical field of the medial presylvian wall (paraorbital...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1984-01-01 00:00:00
abstract：:Hypothyroidism affects neuron population dynamics in the hippocampus of the adult rat, with neuronal damage as the main feature of its effect. This effect is prevented by the blockade of NMDA receptors, which suggests that glutamatergic activity mediates cell death in this condition. Glutamate can also stimulate cell ...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2014-01-01 00:00:00
abstract：:We investigated the responses to insect prey (dead houseflies) in 24 "derivative groups" of workers of the ant Formica polyctena created by taking sets of 25 workers out of nine larger "initial groups" kept in laboratory without queens and brood during the preceding five months. In the derivative groups the ants cease...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：:Preconditioning is an experimental strategy for reducing ischemic brain damage. There are reports that brief exposure of neurons to NMDA-receptor antagonists may be an adequate preconditioning stressor. We studied effects of preconditioning of the cerebellar granule cells (CGC) in primary culture by 30-minute exposure...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2014-01-01 00:00:00
abstract：:Human umbilical cord blood (HUCB) is considered a promising source of neural progenitors capable of being used for cellular therapies in neurological disorders. Here we review briefly our work on the elucidation of mechanisms and development of practical standards as regards the selection, maintenance and use of cord ...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2006-01-01 00:00:00
abstract：:Two experiments involving parallel procedures to investigate stimulus generalization in prefrontal dogs under alimentary and defensive reinforcement were compared. Twelve dogs in the alimentary study were trained on a 50 percent partial reinforcement schedule, and 24 dogs were trained to avoid shock with either contin...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1982-01-01 00:00:00
