Abstract：
:To elucidate whether pineal melatonin secretion is affected by changes in day length, we determined the concentration of melatonin in human pineal glands obtained at autopsy from 66 male subjects, aged 16-84 years over a period of 12 consecutive months. Based on the time of death, a day-night difference in pineal melatonin levels was evident only in the long photoperiod (April-September) with significantly higher melatonin concentrations occurring at night (2200-1000 h). Nighttime values in the long photoperiod were significantly higher than the nighttime values during the short photoperiod (October-March). During the short photoperiod, the data suggested a possible phase-delay in melatonin secretion. Day-night difference was evident in young subjects (30-60 years), but not in elderly subjects (61-84 years). Elderly subjects had lower total melatonin levels (day and night values) although statistically not significant. Therefore, melatonin levels did not decline with age and when the data were analyzed by age there was no significant day-night difference in melatonin levels. These data indicate that the concentration of melatonin in the human pineal is augmented only during the long photoperiod. The results suggest a partial effect of photoperiod on melatonin secretion in humans. This may result from living in an artificial light environment or due to other nonphotic signals involved in generating melatonin rhythm.
journal_name
Brain Res Bulljournal_title
Brain research bulletinauthors
Luboshitzky R,Yanai D,Shen-Orr Z,Israeli E,Herer P,Lavie Pdoi
10.1016/s0361-9230(98)00105-1subject
Has Abstractpub_date
1998-10-01 00:00:00pages
271-6issue
3eissn
0361-9230issn
1873-2747pii
S0361-9230(98)00105-1journal_volume
47pub_type
杂志文章abstract：:Changes in dietary habits, including the increased consumption of processed foods, rich in trans fatty acids (TFA), have profound effects on offspring health in later life. Thus, this study aimed to assess the influence of maternal trans fat intake during pregnancy or lactation on anxiety behavior, as well as markers ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2020.11.016
更新日期：2021-01-01 00:00:00
abstract：:Patterns of female sexual behavior in the hamster are qualitatively different from that observed in the rat. Hamsters demonstrate tonic immobility and a sustained lordotic response that can last for several minutes following minimal stimulation from the male while in rats, the lordotic response is highly dependent upo...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(87)90064-5
更新日期：1987-12-01 00:00:00
abstract：:Stimulation of the dorsal frontal cortex (area 10, FCtx) evoked two negative waves with short latencies (N1 and N2) followed by a large, longlasting positive wave (P) in the ventromedial nucleus (VMH) as well as in the more dorsal structures in the hypothalamus and the ventral thalamus. Since the N1 followed high freq...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(79)90287-9
更新日期：1979-03-01 00:00:00
abstract：:Insulin release was examined in human subjects after lingual applications of D-glucose and its anomers. A dose-dependent increase in the insulin release was noted following the application of equilibrated D-glucose consisting of 36% alpha- and 64% beta-anomer. The response was not reproduced after administration of at...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(86)90126-7
更新日期：1986-08-01 00:00:00
abstract：:We previously showed that inhibition of brain NO production suppresses sleep in rats and rabbits. In the present experiments we studied the effects of stimulation of NO-receptive brain mechanisms on sleep. Male rats were injected intra-cerebroventricularly with the NO donor S-nitroso-N-acetylpenicillamine (SNAP, 400 m...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(96)00227-4
更新日期：1996-01-01 00:00:00
abstract：:A simple low-cost modification to a conventional horizontal two-stage micropipette puller is described. It allows the production of pipettes suitable for patch-clamp studies. It requires that the hard-pull stage of the fabrication process be disabled and two heating cycles, each with a different heating filament tempe...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(89)90036-1
更新日期：1989-05-01 00:00:00
abstract：:As nicotinic acetylcholine receptor (nAChR) agonists directly address cholinergic neurotransmission with potential impact on glutamatergic function, they are considered as potential new symptomatic treatment options for Alzheimer's disease compared to the indirectly operating acetylcholinesterase inhibitors such as th...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2013.04.006
更新日期：2013-07-01 00:00:00
abstract：:Seizure activity stimulates adult neurogenesis, the birth of new neurons, in the hippocampus. Many new neurons that develop in the presence of repeatedly induced seizures acquire abnormal morphological and functional characteristics that can promote network hyperexcitability and hippocampal dysfunction. However, the i...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2019.07.003
更新日期：2019-10-01 00:00:00
abstract：:The present study aimed to investigate the effects of sleep deprivation (SD) on the dose-dependent stimulant effect of ethanol (ETOH) on the open-field behavior of female and male mice. Sleep-deprived (48 h, multiple platforms method) or home-cage control female mice were treated with saline (SAL) or 1.4, 1.8 or 2.2g/...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2006.01.006
更新日期：2006-04-14 00:00:00
abstract：:Rats implanted with electrodes for polygraphic recording were deprived of REM sleep for 24 hr. Following REM sleep deprivation animals were injected with quipazine maleate (7.5 mg/kg IP) and were polygraphically recorded for 48 hr. The results show that quipazine reduces REM sleep rebound and that it has a biphasic ef...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(82)90067-3
更新日期：1982-03-01 00:00:00
abstract：:Norepinephrine (NE) and dopamine (DA) levels and turnover were measured in 17 discrete brain regions of Swiss-Webster (NIH) mice made aggressive by prolonged isolation. The NE steady state level was significantly lower in olfactory tubercle and substantia nigra and significantly higher in the septal area of the aggres...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(80)90287-7
更新日期：1980-01-01 00:00:00
abstract：:In a previous study we showed that healthy highly hypnotizable subjects, during the suggestion of a moderately unpleasant situation administered in awake conditions, exhibited a sympathetic response greatly attenuated with respect to non-hypnotizable individuals. This was interpreted as a natural protection of hypnoti...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2005.12.003
更新日期：2006-03-31 00:00:00
abstract：:Direct intracellular measurements of excitability changes to injected current were made in 116 cortical neurons of awake cats following antidromic or orthodromic activation by repetitive, 1-6 Hz stimulation of the pes pedunculi. The predominant effect seen in antidromically activated cells was a transient decrease in ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(79)90106-0
更新日期：1979-09-01 00:00:00
abstract：:Constant light exposure (LL) can result in "splitting" of circadian rhythms into two components coupled about 12 hr apart. Splitting has been interpreted as evidence for the presence of two main oscillators or groups of oscillators underlying circadian rhythms. Abolition of splitting after unilateral suprachiasmatic n...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(90)90164-u
更新日期：1990-04-01 00:00:00
abstract：:The microdialysis method was utilized to study the effects of N omega-nitro-L-arginine (L-NNA) and N omega-nitro-D-arginine (D-NNA), an inhibitor of nitric oxide (NO) synthesis from L-arginine and its D-enantiomer, on spontaneous and N-methyl-D-aspartate (NMDA)-evoked overflow of striatal extracellular dopamine (DA) i...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(94)90021-3
更新日期：1994-01-01 00:00:00
abstract：:Traumatic brain injury (TBI) is a major public-health problem for which mild TBI (MTBI) makes up majority of the cases. MTBI is a poorly-understood health problem and can persist for years manifesting into neurological and non-neurological problems that can affect functional outcome. Presently, diagnosis of MTBI is ba...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/j.brainresbull.2012.01.007
更新日期：2012-03-10 00:00:00
abstract：:In female rats, stimulation of the uterine cervix during mating induces two daily surges of prolactin. Inhibition of hypothalamic dopamine release and stimulation of oxytocin neurons in the paraventricular nucleus (PVN) are required for prolactin secretion. We aim to better understand how stimulation of the uterine ce...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2012.06.004
更新日期：2012-09-01 00:00:00
abstract：:Various reports have suggested that penehyclidine hydrochloride (PHC), a new cholinergic antagonist, exhibits a variety of biological actions such as anti-tumor and cardioprotective effects. This study aimed to investigate the effects of PHC on cerebral ischemia/reperfusion (I/R) injury and evaluate whether the c-Jun ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2016.01.008
更新日期：2016-03-01 00:00:00
abstract：:Autophagy is the lysosome-mediated bulk degradation of cellular components for material recycling to maintain cellular homeostasis. Autophagy was initially regarded as a nonselective process, however, recent evidence indicates that this process can in fact be highly selective, especially for targeting and degrading or...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/j.brainresbull.2017.11.009
更新日期：2018-03-01 00:00:00
abstract：:Rats self-administered cocaine or received saline during 3 daily 5 h sessions and were euthanized 1 h after the final session. Quantitative in situ hybridization revealed that cocaine self-administration increased levels of preprodynorphin, but not preproenkephalin, c-fos, or zif/268 mRNAs in a patchy pattern in the d...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(95)00049-k
更新日期：1995-01-01 00:00:00
abstract：:Fenfluramine, an anorexigenic drug, lowers serotonin (5-hydroxytryptamine) and 5-hydroxyindoleacetic acid levels in brain, spinal fluid, and blood, and has been used as a treatment for autism. Fenfluramine's mode of action is unknown. We present evidence from chromatography and nuclear magnetic resonance spectroscopy ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(84)90209-0
更新日期：1984-01-01 00:00:00
abstract：:We quantitated the activity of ornithine decarboxylase (ODC) in homogenates and subcellular fractions of inner ear tissues from the rat and guinea pig and demonstrate inhibition of cochlear ODC by the aminoglycoside neomycin. Subcellular fractionation showed the enzyme associated with the post-mitochondrial supernatan...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(87)90056-6
更新日期：1987-12-01 00:00:00
abstract：:The effects of chemically and electrically-induced convulsions on the binding of [3H]Ro 5-4864 to peripheral benzodiazepine receptors (PBR) was studied in both peripheral tissues and the central nervous system (CNS). Acute, maximal electroshock (MES) increased the density of PBR in mouse cerebral cortex as evidenced b...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(87)90158-4
更新日期：1987-07-01 00:00:00
abstract：:In order to study mechanisms by which a neurotropic strain of influenza A virus (A/WSN/33) may affect neuronal function or cause nerve cell death, hippocampal cultures from embryonic rats were infected with this virus. Approximately 70% of the neurons in the infected cultures became immunopositive for viral antigens a...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(01)00536-6
更新日期：2001-06-01 00:00:00
abstract：:Single-unit responses of preoptic-anterior hypothalamic (PO/AH) thermosensitive neurons to electrical stimulation of the mediobasal hypothalamus (MBH: ventromedial and arcuate nuclei) have been studied in urethane-anesthetized male rats. About half of thermosensitive neurons (46.4% of 69 warm-units and 50% of 28 cold-...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(82)90095-8
更新日期：1982-06-01 00:00:00
abstract：:Since the groundbreaking work of Ramon y Cajal, the cerebellar Purkinje cell has always represented an ideal model for studying the organization, development and function of synaptic circuits. Purkinje cells receive distinct types of glutamatergic and GABAergic synapses, each characterized by exquisite sub-cellular an...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/j.brainresbull.2016.10.004
更新日期：2017-03-01 00:00:00
abstract：:Itch is an annoying sensation that always triggers scratching behavior, yet little is known about its transmission pathway in the central nervous system. Parabrachial nucleus (PBN), an essential transmission nucleus in the brainstem, has been proved to be the first relay station in itch sensation. Meanwhile, dorsal mi...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2021.01.012
更新日期：2021-01-25 00:00:00
abstract：:In post-natal kittens which were given injections of HRP in the suprasylvian gyrus (polysensory cortex), the cortico-cortical connections were studied qualitatively and quantitatively. These connections originate essentially from cortical cells localized in cortices of the upper part of the hemisphere. They are formed...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(85)90040-1
更新日期：1985-11-01 00:00:00
abstract：:Investigation of the differentiation of electrical properties of motoneurons has been stimulated by the importance of these neurons for embryonic behavior and facilitated by their experimental accessibility. In this review, we examine the development of different patterns of excitability and their functions, and discu...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/s0361-9230(00)00388-9
更新日期：2000-11-15 00:00:00
abstract：:A continuous rhythmic discharge in the subthalamic nucleus (STN), lateral habenular nucleus, and ventral tegmental area (VTA) is associated with tremor in cats lightly anesthetized with barbiturate. The pontine raphe nuclei centralis superior and inferior also show barbiturate dependent slow wave and unitary activity....
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(76)90053-8
更新日期：1976-01-01 00:00:00
