Abstract：
:Calcium channels affect many neuronal functions, including membrane electrical excitability, synaptic transmission, cellular homeostasis, gene transcription, growth, and development. We used recently developed methods for serum-free culture of adult and embryonic rat neurons to study the development of voltage-sensitive calcium currents. We compared characteristics of voltage-sensitive calcium currents in neurons taken from juvenile adult (2-4 months of age) and embryonic (day 18) rats. Mean total calcium currents were 67% larger in embryonic compared to adult neurons. At both ages, calcium currents contained only high-voltage-activated components, and lacked low-voltage-activated components. High-voltage-activated currents were significantly greater in embryonic than in adult neurons, but the voltage-sensitivity was similar. Our adult cultures, but not embryonic cultures, contain basic fibroblast growth factor (FGF2), which enhances survival. We tested the effect of FGF2 and found that growth in its presence caused increased calcium currents in both embryonic and adult neurons. We conclude that in neurons cultured in serum-free medium, neuronal development from embryonic to juvenile adult ages is associated with a significant reduction in voltage-sensitive calcium currents.
journal_name
Brain Res Bulljournal_title
Brain research bulletinauthors
Collings MA,Brewer GJ,Evans MSdoi
10.1016/s0361-9230(98)00147-6keywords:
subject
Has Abstractpub_date
1999-01-01 00:00:00pages
73-8issue
1eissn
0361-9230issn
1873-2747pii
S0361-9230(98)00147-6journal_volume
48pub_type
杂志文章abstract：:Rearing preweanling rat pups away from their mothers by feeding through chronic intragastric cannulas has been shown to result in alterations in the growth of specific organs. In the present study, artificially reared (AR) rats and their normally reared (NR) siblings were sacrificed at various ages during this procedu...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(83)90006-0
更新日期：1983-12-01 00:00:00
abstract：:Adaptation of the frog, Rana temporaria, to a white background for 12 hr has resulted in an intense formaldehyde-induced fluorescence (FIF) in the neurons of the preoptic recess organ (PRO), paraventricular organ (PVO), nucleus infundibularis dorsalis (NID) and their basal processes permitting visualization of the PRO...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(82)90184-8
更新日期：1982-07-01 00:00:00
abstract：:The present study examined the changes of extracellular concentration of dopamine and its metabolite homovanillic acid in the striatum, the periaqueductal gray and the dorsal horn of lumbar spinal cord following intraplantar injection of carrageenan. In vivo microdialysis and high-performance liquid chromatography wit...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(00)00460-3
更新日期：2001-03-01 00:00:00
abstract：:The morphology of somatostatin immunoreactive (SOM-I) neurons in lamina (L) II of the rat spinal cord was determined using a combination of Golgi impregnation and immunohistochemistry. Golgi-impregnated SOM-I neurons that resembled islet, stalked and other cells were observed. Islet cells are considered to be inhibito...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(92)90192-z
更新日期：1992-02-01 00:00:00
abstract：:It is known that spinal nociceptive sensory transmission receives descending inhibitory and facilitatory modulation from supraspinal structures. Glutamate is the major fast excitatory transmitter between primary afferent fibers and spinal dorsal horn neurons. In whole-cell patch clamp recordings from dorsal horn neuro...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(01)00470-1
更新日期：2001-04-01 00:00:00
abstract：:"Responder" Sprague-Dawley (SD) rats that were sensitive to electroacupuncture (EA) in an acute thermal pain test (i.e. tail flick latency [TFL] test) maintained sensitivity to EA in the warm allodynia test after peripheral nerve injury. Similarly, the "non-responder" SD rats that were insensitive to EA in the TFL tes...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2007.07.006
更新日期：2007-10-19 00:00:00
abstract：:Mice selected for differences in nest-building behavior differ in the number of arginine-vasopressin (AVP)-immunoreactive neurons in the suprachiasmatic nuclei (SCN). Although previous efforts to link AVP-immunoreactive neurons in the SCN to clock function have failed, we show that differences in several circadian par...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(93)90164-7
更新日期：1993-01-01 00:00:00
abstract：:The role of several hippocampal innervations in the sensitivity to barbital-induced narcosis was studied in selected mice strains. The outbred and inbred mouse strains HS/lgb, SABRA/HUC, C57BL, CBA/LAC, and BALB/c were tested for barbital-induced sleep (315 mg/kg). The relatively short sleeping HS/lbg (HS) and the lon...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(95)00077-r
更新日期：1995-01-01 00:00:00
abstract：OBJECTIVE:Cerebral ischemic stroke (IS) threatens the daily life of individuals, with high mortality. Emerging studies have deciphered the independent roles of the long non-coding RNA growth-arrest-specific transcript 5 (GAS5), microRNA (miR)-455-5p and phosphatase and tensin homolog (PTEN) in IS, but the understanding...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2020.12.002
更新日期：2021-02-01 00:00:00
abstract：:Brain-derived neurotrophic factor (BDNF) is a member of the nerve growth factor family, and is widely expressed in the adult mammalian brain. Besides its well known neuroprotective activity after traumatic brain injury the evidences regarding its activity dependent release by the pathophysiology of major depression ar...
journal_title：Brain research bulletin
pub_type： 杂志文章,评审
doi：10.1016/j.brainresbull.2008.12.002
更新日期：2009-03-30 00:00:00
abstract：:To elucidate the role of the medial basal hypothalamus (MBH) in stress-induced prolactin (Prl) release, adult male rats which had received monosodium glutamate (MSG 4 mg/g) on alternate days for the first 10 days of life were subjected to ether stress for 2 min. Blood samples were drawn at 0, 15, 30 and 60 min after e...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(83)90068-0
更新日期：1983-01-01 00:00:00
abstract：:A computer program designed to be user friendly is described in this report. Two types of calculations are provided: a) determination of free calcium concentration based on known total salt concentration and b) those which calculate total salt concentration required to insure a desired free calcium concentration in th...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(92)90088-f
更新日期：1992-09-01 00:00:00
abstract：:This study was performed to elucidate the mechanism by which adenosine triphosphate (ATP) encapsulated into liposomes was able to protect against experimental brain ischemia in the rat. After intracarotidal administration of liposomally entrapped ATP, the ATP blood level increased dramatically whereas no change was ob...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(91)90004-4
更新日期：1991-03-01 00:00:00
abstract：:Endogenous levels of Aspartic acid, GABA and Glutamic acid plus Glutamine were measured in the frontal, occipital, temporal and parietal cortex. Aspartic acid levels were found higher in the frontal cortex than in the rest of the cortical areas studied. GABA, however, had a homogenous distribution among all cortical a...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(84)90142-4
更新日期：1984-06-01 00:00:00
abstract：:The lateral hypothalamic area (LHA) and globus pallidus (GP) are basically involved in the regulation of feeding and metabolic processes. In the LHA, glucose-sensitive (GS) neurons were described: their activity was found to be specifically suppressed by electrophoretic application of glucose, and these neurons appear...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(94)00269-7
更新日期：1995-01-01 00:00:00
abstract：:Saturation and competition binding studies showed that the turtle brain contains sigma sites labeled by both [3H]di-o-tolylguanidine (DTG) and [3H](+)-pentazocine. There was a significant correlation between the IC50 values of sigma ligands for [3H]DTG sites in the turtle vs. rat brain, suggesting that the sites are c...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(99)00029-5
更新日期：1999-03-15 00:00:00
abstract：:Neurological assessment of certain movement disorders is described with emphasis on Parkinson's disease. In addition, abnormal behavior and changes in affect are given. Changes in neurological status, i.e., Bradykinesia, rigidity, gait changes, hand-writing irregularity, postural reflexes are outlined. The differentia...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(83)90181-8
更新日期：1983-08-01 00:00:00
abstract：:A significant pathological feature of refractory temporal lobe epilepsy (TLE) is neuronal loss. Oxidative stress caused by repeated seizures is an important mechanism leading to neuronal loss in hippocampus. Nicotinamide-adenine dinucleotide (NAD) a coenzyme that is involved in many biochemical oxidation-reduction rea...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2020.11.019
更新日期：2021-02-01 00:00:00
abstract：:The projections from the rat medial prefrontal cortex to the amygdaloid complex were investigated using retrograde transport of fluorescent dyes and anterograde transport of horseradish peroxidase-WGA. The ventral anterior cingulate, prelimbic, infralimbic and medial orbital areas and the taenia tecta were found to pr...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(86)90237-6
更新日期：1986-09-01 00:00:00
abstract：:Administration of methionine enkephalin (ICV) to rats for 5 days resulted in the development of physical dependence as exemplified by a hypothermic response which peaked 2-8 hours after initiation of withdrawal. Twenty-four hours post-withdrawal, opioid receptor binding was determined in the striatum using a selective...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(86)90123-1
更新日期：1986-08-01 00:00:00
abstract：:A microdialysis probe, implanted in the posterior hypothalamus (PH) was used to examine changes of extracellular norepinephrine (NE) in freely moving rats from which mean arterial pressure (mAP) and heart rate (HR) were continuously monitored. Artificial cerebrospinal fluid (aCSF) was pumped through the probe and 10-m...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(90)90117-i
更新日期：1990-10-01 00:00:00
abstract：:Although iron is involved in brain function, very little is known about the regulation of its concentrations in the central nervous system. We quantitatively measured the entry and exit rates of iron, transferrin (its major transport protein), and albumin in mice. The blood to brain transport of iron greater than tran...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(88)90021-4
更新日期：1988-12-01 00:00:00
abstract：:A simple, inexpensive hardware and software protocol is described for conditioning and testing hearing of gerbils with minimal experimenter involvement. Behavioral thresholds correspond closely with data which employ nonautomated procedures. Partial source listings of the programs written in the 'C' programming langua...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(89)90075-0
更新日期：1989-02-01 00:00:00
abstract：:The effects of histamine H3-receptor antagonists, thioperamide, and clobenpropit on amygdaloid kindled seizures were investigated in rats. Both intracerebroventricular (i.c.v.) and intraperitoneal (i.p.) injections of H3-antagonists resulted in a dose-related inhibition of amygdaloid kindled seizures. An inhibition in...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/s0361-9230(98)00048-3
更新日期：1998-07-15 00:00:00
abstract：:The use of a new and very sensitive immunohistochemical method, combined with intracerebral injections of colchicine, has allowed us to show that a number of nerve cell bodies immunoreactive for Met-enkephalin are present in several mesencephalic nuclei of the rat, including the different subdivisions of the substanti...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(91)90275-o
更新日期：1991-07-01 00:00:00
abstract：:The polysialylated form of the neural cell adhesion molecule (PSA-NCAM) is involved in several morphogenetic processes of the central nervous system. In the present study the expression of PSA-NCAM has been investigated in the rat thalamus during embryonic and postnatal development using light and electron microscopic...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2006.11.015
更新日期：2007-03-30 00:00:00
abstract：:Brain serotonin (5-HT) levels and accumulation rate within the dorsal raphe nucleus (DR) were elevated in ovariectomized (OVX) rats after ovarian steroid treatment, which consisted of estradiol benzoate (EB) followed by progesterone (P) 48 hr later. Some animals were also given the monoamine oxidase (MAO) inhibitor pa...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(81)90111-8
更新日期：1981-12-01 00:00:00
abstract：:The aim of the present study was to investigate the effects of activation of metabotropic glutamate receptors (mGluR) on the extracellular concentrations of GABA and acetylcholine in the prefrontal cortex of freely moving rats of different groups of age. Perfusion, through the microdialysis probe, of the agonist of mG...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/j.brainresbull.2004.10.010
更新日期：2005-02-15 00:00:00
abstract：:Unilateral injections of 6-hydroxydopamine (6-OHDA) cause significant bilateral increases in striatal proenkephalin (PEK) mRNA in rat brain. We have tested the possibility that implantation of fetal mesencephalic cells can normalize these changes. Two types of grafts were used: 1) embryonic day-15 mesencephalic cells ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(91)90050-t
更新日期：1991-11-01 00:00:00
abstract：:IN anesthetized and paralyzed rabbits, action potentials were elicited antidromically following electrical stimulation of optic tract terminals at the geniculate level (LGN). The conduction velocity spectrum extended from 7 m.s-1 to 34 m.s-1. The distribution of conduction velocities indicated four major modes at 10, ...
journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(80)90207-5
更新日期：1980-11-01 00:00:00
