Abstract:
:Effects of near-ultraviolet (UV-A; 325-390 nm, peak at 365 nm) light on the activity of the pineal serotonin N-acetyltransferase (NAT; a penultimate and key regulatory enzyme in melatonin biosynthesis) were examined in rats. Acute exposure of dark-adapted animals to UV-A radiation produced a marked suppression of NAT activity of the pineal gland, the effect being dependent on exposure time. The decrease in the night-time NAT activity evoked by a 1-min pulse of UV-A light (as well as by a 15-s pulse of broad-band visible light) gradually deepened during the first 40 min of treatment of animals with constant darkness, then the enzyme activity began to rise reaching control values by 3 h. Treatment of rats with a protein synthesis inhibitor, cycloheximide, attenuated this night-driven reactivation of the pineal NAT activity. The presented results provide evidence that UV-A light is a powerful signal capable of controlling melatonin biosynthesis in rat pineal gland.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Zawilska JB,Rosiak J,Nowak JZdoi
10.1016/s0304-3940(98)00085-8subject
Has Abstractpub_date
1998-02-27 00:00:00pages
49-52issue
1-3eissn
0304-3940issn
1872-7972pii
S0304-3940(98)00085-8journal_volume
243pub_type
杂志文章abstract::A broad spectrum caspase inhibitor reduces hypoxic ischemic brain injury. We hypothesized that a specific caspase-9 inhibitor would provide similar protection. Seven-day-old rat pups had the right carotid artery ligated, then were subjected to 2.5 h of 8% oxygen. Caspase-9 activity in the right cortex was measured enz...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(03)00466-x
更新日期:2003-07-03 00:00:00
abstract::Simultaneous recordings of cortical activity, recorded as the cortical local field potential (CLFP) in the contralateral posterior sigmoid gyrus, and the spinal activity, recorded as the cord dorsum potential (CDP) of the L6 lumbar segment, were made in the anaesthetized cat. The electrodes were positioned in somatose...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(01)02497-1
更新日期:2002-02-01 00:00:00
abstract::Activin A levels are elevated in the cerebrospinal fluid (CSF) of patients with meningitis and in the sera of patients with sepsis. The source(s) of the elevated concentrations of activin A in CSF and serum have not yet been discovered. Here we demonstrate that primary mouse microglial cells and peritoneal macrophages...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2006.11.065
更新日期:2007-02-21 00:00:00
abstract::Although corticotropin-releasing factor (CRF) is thought to act as a neurotransmitter to activate the locus coeruleus (LC) during hypotensive stress, the consequences of LC activation by CRF are unknown. In the present study a hypotensive challenge that activated rat LC neurons also produced cortical electroencephalog...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(93)90862-f
更新日期:1993-12-24 00:00:00
abstract::The effect of insulin-induced hypoglycemic stress on the concentrations of immunoreactive beta-endorphin (ir beta-EP) in plasma and cerebrospinal fluid (CSF) was examined in conscious non-pregnant ewes in which the cisterna magna and a jugular vein had been previously catheterized. In control experiments, no significa...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(84)90126-5
更新日期:1984-08-24 00:00:00
abstract::Although a linear correlation between oscillatory activities in the right and left motor cortices during movements has been shown in monkeys, there has been a debate whether scalp-recorded EEG coherence in human reflects a similar association. By applying partial coherence analysis, we demonstrated that interhemispher...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(00)01165-4
更新日期:2000-06-23 00:00:00
abstract::Despite extensive data addressing the regulation of the hypothalamo-pituitary-adrenal (HPA) axis in vertebrates, the neuroendocrine regulation of stress in birds remains incomplete. The paraventricular nucleus (PVN) contains the key neuropeptides, corticotropin releasing hormone (CRH) and arginine vasotocin (AVT), con...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2017.01.064
更新日期:2017-03-06 00:00:00
abstract::We have addressed the role of the head of caudate nucleus in taks of lexical decision, semantic categorization, reading aloud, memory retrieval and object naming by recording neuronal activity from depth electrodes in parkinsonism patients. The firing rate of cells was increased within 400-600 ms when semantic process...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(97)00680-0
更新日期:1997-10-03 00:00:00
abstract::Drug addiction is a process that transits from recreative and regular drug use into compulsive drug use. The two patterns of drug use, controlled drug intake and escalated drug intake, represent different stages in the development of drug addiction; and escalation of drug use is a hallmark of addiction. Accumulating s...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2015.11.016
更新日期:2016-01-12 00:00:00
abstract::A well-known event-related potential (ERP) component-the recognition potential (RP) is a response to recognizable stimuli, peaking at around 200-250 ms. The aim of the present study is to put to the test the contrasting perceptual and semantic accounts of the RP, with manipulation of word meaning and presentation form...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2009.02.047
更新日期:2009-04-17 00:00:00
abstract::We present results of homozygosity mapping in two siblings affected with early onset Parkinson's disease (EOPD) and mutation screening of ATP13A2 in these and other Iranian EOPD patients. Genome-wide SNP homozygosity analysis revealed linkage to a locus that included ATP13A2, and sequencing of the gene revealed a nove...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2014.06.023
更新日期:2014-08-08 00:00:00
abstract::The representation of time, space and numbers are strictly linked in the primate's cognitive system. Here we show that merely looking at number symbols biases a temporal judgment on their duration depending upon the number's magnitude. In a first experiment, a group of healthy subjects was submitted to a time estimati...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2008.04.051
更新日期:2008-06-27 00:00:00
abstract::The dopamine modulation of microiontophoretic application of antagonists of glutamate metabotropic synaptic transmission was studied in the sensory motor cortex of awake cats during instrumental conditioned reflex. The substances depressed the background and intensity of evoked impulse activity of pyramidal neurons of...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2003.11.039
更新日期:2004-02-12 00:00:00
abstract::Hypoxic encephalopathy is a common cause of neonatal seizures and long-term neurological cognitive deficits. In rats at postnatal days 10-12 (P10-P12), global hypoxia induced spontaneous seizures and chronic brain injury, mimicking clinical aspects of neonatal hypoxia. Synaptic Ras-GTPase activating protein (SynGAP) h...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2004.08.044
更新日期:2004-11-16 00:00:00
abstract::Compromised oxygen supply to cerebral tissue could be an important mechanism contributing to age-related cognition decline. We recently showed in awake mice that resting cerebral tissue pO2 decreases with age, a phenomenon that manifests mainly after middle-age. To extend these findings, here we aimed to study how tis...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2019.02.007
更新日期:2019-04-23 00:00:00
abstract::Many researchers have investigated the variability of discrete goal-directed movements. However, a possible time-dependent property for them has been ignored. We investigated the time-dependent property of the kinematic variability in human rapid goal-directed movements by using fractal analysis. The variability of th...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(01)01779-7
更新日期:2001-05-25 00:00:00
abstract::Exposure of rat hippocampal neurons to the peptide amyloid beta (A beta) (25-35) as well as A beta (1-40) peptides enhances phosphorylation of tau to a paired helical filament (PHF)-state through activation of tau protein kinase I (TPK I)/glycogen synthase kinase-3 beta (GSK-3 beta) [Busciglio, J., Lorenzo, A., Yeh, J...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(95)12257-5
更新日期:1996-01-12 00:00:00
abstract::Cerebrospinal fluid (CSF) was obtained from donor rats either during the dark or during the light period of their diurnal cycle, and infused into the lateral ventricle of recipient rats. Infusing recipient rats during their dark period with CSF from light-exposed donors reduced the motor activity, whereas, conversely,...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(76)90028-8
更新日期:1976-04-01 00:00:00
abstract::In CA3 pyramidal neurons of guinea pig hippocampal slices an outward current activated by the GABAB agonist, baclofen (0.3 microM, Ibac) was reduced by low concentrations of carbachol (Cch, 0.1-0.3 microM). The effect of Cch desensitized suggesting that the receptor subtype involved in this muscarinic effect of Cch wa...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(89)90673-3
更新日期:1989-05-22 00:00:00
abstract::Neurofibromatosis 1 (NF1) is a common autosomal dominant disorder in which affected individuals develop benign and malignant tumors as well as non-tumor-related abnormalities, such as seizures and learning disabilities. Here, we report an NF1 isoform arising from the alternative splicing of exon 9a with predominant ce...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(96)12730-0
更新日期:1996-06-21 00:00:00
abstract::Contact heat evoked potentials (CHEPs) have been difficult to elicit due to slow temperature rise times. A recently developed heat-foil technology was used to elicit pain and CHEPs. Two groups of subjects were separately stimulated at the left arm with contact heat via one fast-acting (70 degrees C/s) heat-foil thermo...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(01)02374-6
更新日期:2001-12-01 00:00:00
abstract::Immunomorphological staining demonstrates that class I major histocompatibility complex (MHC)-coded antigen expression can be selectively induced on otherwise class I-negative rat nerve cells by peripheral axotomy. Induction of class I as well as class II antigen expression was simultaneously seen on non-neural cells ...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(88)90733-1
更新日期:1988-09-23 00:00:00
abstract::Nitric oxide (NO) is an important messenger in the central nervous system to mediate male copulatory behavior. EGb 761, a standardized extract of Gingko biloba, has been reported to facilitate male copulation in rats. The present study is to determine the effects of neuronal nitric oxide synthase (nNOS) in the medial ...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2011.06.028
更新日期:2011-08-18 00:00:00
abstract::The present study was designed to investigate the role of the interaction of pentobarbital with gamma-aminobutyric acid (GABA)ergic drugs acting on the Cl(-)-adenosine triphosphate (ATP)ase activity of the plasma membranes fraction of bream brain. The preincubation and then incubation of the membranes with pentobarbit...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(02)01076-5
更新日期:2002-12-16 00:00:00
abstract::The pituitary-adrenal responsiveness to a mild stressor was assessed in rats that were deprived of paradoxical sleep (PS) and in controls that were not deprived. Animals were either individually- or group-deprived for 96 h and hormone levels were assessed at 0, 5, 20 or 60 min after a saline injection+novelty and comp...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(02)00024-1
更新日期:2002-03-01 00:00:00
abstract::In anesthetized cats selective activation of fine muscle afferents of the hindlimb by KCl or bradykinin (Brad.) induced reflex changes in the urinary bladder. The nature of the reflex responses depended on the functional state of the bladder: they were excitatory when the bladder was quiescent and inhibitory during la...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(79)90048-x
更新日期:1979-01-01 00:00:00
abstract::The recent discovery that subsets of rat taste receptor cells (TRCs) express the peptide cholecystokinin (CCK) and that subsets of TRCs respond to CCK with altered potassium currents or elevated intracellular calcium via CCK-A receptor has lead to the hypothesis that CCK may play a novel signaling role within the tast...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2003.07.016
更新日期:2003-11-20 00:00:00
abstract::Little is known about the effect of wnt-3a on motor nerve function and its specific molecular mechanisms after spinal cord injury (SCI). This study demonstrates that the downregulated expression levels of caspases-3, caspases-9 and chondroitin sulfate proteoglycan (CSPG) proteins and number of proportion of transferas...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/j.neulet.2020.135305
更新日期:2020-10-15 00:00:00
abstract::The psychostimulant amphetamine (AMPH) is known to act as an indirect dopamine agonist by promoting dopamine release. Here we demonstrate direct AMPH inhibition of field potentials and Na+ currents in rat nucleus accumbens (NAc) neurons. The experiments were done with field potential recordings from NAc slices and who...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/s0304-3940(98)00556-4
更新日期:1998-08-07 00:00:00
abstract::This study evaluates the neuroprotective properties of some voltage-sensitive sodium channel blockers in a model of focal ischaemia. After curative treatment (0.5 and 24.5 h after insult), well known voltage-sensitive sodium channel blockers, phenytoin (2 x 100 mg/kg i.p.), carbamazepine (2 x 50 mg/kg i.p.), lamotrigi...
journal_title:Neuroscience letters
pub_type: 杂志文章
doi:10.1016/0304-3940(94)90652-1
更新日期:1994-05-19 00:00:00