Abstract：
:The axonal transport of tRNA has been investigated in the chick optic system. Chicks were injected with [3H]uridine intraocularly or intracranially and the RNA of the retina, nerve complex, and tecta separated by polyacrylamide gel electrophoresis and then counted. The ratio of tRNA to rRNA specific activities increased with time in both the nerve complex and contralateral tectum. The ratio increased more rapidly in the nerve complex than the tectum. However, no increase was observed in the case of intracranially injected animals. This is consistent with the axonal flow of tRNA. When [methyl-3H]methionine was used as precursor, the preferential labeling of 4S RNA to rRNA which resulted more clearly showed a transport of 4S RNA from the retinal cells to the tectum. In conclusion, it was found that about 40% of the radioactive RNA observed within the optic tectum 4 days after an intraocular injection of [3H]uridine was accounted for by 4S RNA which has flowed from the retina. However, the migration of a methylated RNA molecule of size 4S, but unrelated to rRNA, cannot be entirely eliminated.
journal_name
Neurochem Resjournal_title
Neurochemical researchauthors
Por S,Gunning PW,Jeffrey PL,Austin Ldoi
10.1007/BF00966323subject
Has Abstractpub_date
1978-08-01 00:00:00pages
411-21issue
4eissn
0364-3190issn
1573-6903journal_volume
3pub_type
杂志文章abstract：:Serotonin uptake and metabolism was studied in ependymal primary cultures. Serotonin uptake was facilitated by two different systems, one of which was the neuronal serotonin transporter SERT, exhibiting a Vmax value of 3.8+/-0.1 pmol x min(-1) x (mg protein)(-1) and an apparent Michaelis-Menten constant of 0.41+/-0.03...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1023/b:nere.0000035810.08543.97
更新日期：2004-09-01 00:00:00
abstract：:A number of recent findings support the notion of mechanistic parallels between Alzheimer disease (AD) and oncogenic processes, specifically, that neurons in AD, like cancer cells, display aberrant mitotic cell cycle re-entry. However, the mechanism that drives postmitotic neurons to reenter cell cycle remains elusive...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-006-9146-3
更新日期：2007-04-01 00:00:00
abstract：:Acute tryptophan depletion (ATD) is extensively used to investigate the role of central serotonin (5-HT). However, several studies reported that ATD had no significant effect on central 5-HT concentration and some ATD-induced changes was independent of 5-HT in the rodent brain. Therefore, the potential mechanism of AT...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-013-1177-y
更新日期：2013-12-01 00:00:00
abstract：:Pre-eclampsia (PE) is a pregnancy complicated syndrome that affects multiple organs including the brain that continue post- delivery in both mother and the offspring. We evaluated the expression of oligodendrocytes in the brain of PE rat model through development as well as the cognitive changes and other behavioural ...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-020-02969-5
更新日期：2020-04-01 00:00:00
abstract：:The SAM strains, a group of related inbred strains consisting of senescence-prone inbred strains (SAMP) and senescence-resistant inbred strains (SAMR), have been successfully developed by selective inbreeding of the AKR/J strain of mice donated by the Jackson laboratory in 1968. The characteristic feature of aging com...
journal_title：Neurochemical research
pub_type： 杂志文章,评审
doi：10.1007/s11064-009-9922-y
更新日期：2009-04-01 00:00:00
abstract：:Hypothalamic and plasma dopamine-beta-hydroxylase [DBH, EC 1.14.2.1] activites were measured by a coupled radioenzymatic method. Animals representing five experimental groups [intact controls, adrenalectomized, pinealectomized, adrenalectomized pinealectomized, doubly sham-operated] were killed and sampled at 8 times ...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/BF00965575
更新日期：1978-06-01 00:00:00
abstract：:The pathophysiological mechanism(s) underlying Alzheimer's disease (AD) still remain unclear, and no disease-modifying or prophylactic therapies are currently available. Unraveling the fundamental neuropathogenesis of AD is an important challenge. Several studies on AD have suggested lesions in a number of CNS areas i...
journal_title：Neurochemical research
pub_type： 杂志文章,评审
doi：10.1007/s11064-011-0680-2
更新日期：2012-04-01 00:00:00
abstract：:In membranes of rat striatum, phorbol 12-myristate 13-acetate (PMA), a potent activator of Ca2+/phospholipid-dependent protein kinase, enhanced adenylate cyclase activity by counteracting the inhibition elicited by GTP. Exposure to pertussis toxin caused a similar alteration of the GTP-regulation of the enzyme activit...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/BF01101712
更新日期：1990-11-01 00:00:00
abstract：:Addiction is a debilitating, chronic psychiatric disorder that is difficult to cure completely owing to the high rate of relapse. Behavioral sensitization is considered to may underlie behavioral changes, such as relapse, caused by chronic abuse of psychomotor stimulants. Thus, its animal models have been widely used ...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-016-1976-z
更新日期：2016-10-01 00:00:00
abstract：:Acetylcholinesterase (AChE) inhibition has been described as the main mechanism of organophosphate (OP)-evoked toxicity. OPs represent a human health threat, because chronic exposure to low doses can damage the developing brain, and acute exposure can produce long-lasting damage to adult brains, despite post-exposure ...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-015-1548-7
更新日期：2015-10-01 00:00:00
abstract：:Oxidative stress is known to induce cell death in a wide variety of cell types, apparently by modulating intracellular signaling pathways. Activation of extracellular signal-regulated kinase (ERK) in oxidative stress remains controversial. In some cellular systems, the ERK activation is associated with protection agai...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-005-2449-y
更新日期：2005-02-01 00:00:00
abstract：:This study was undertaken to evaluate whether chemical hypoxia-induced cell injury is a result of reactive oxygen species (ROS) generation, ATP depletion, mitochondrial permeability transition, and an increase in intracellular Ca2+, in A172 cells, a human glioma cell line. Chemical hypoxia was induced by incubating ce...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1023/a:1024280429036
更新日期：2003-08-01 00:00:00
abstract：:Acupuncture and moxibustion are traditional medical treatments that have come to play important roles in complementary and alternative medicines. Moxibustion also has a long history as a folk remedy in Japan, particularly due to the technical simplicity and selective efficacy on certain types of disease and distress. ...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-005-8839-3
更新日期：2005-12-01 00:00:00
abstract：:The long-acting opiate antagonist naltrexone hydrochloride was administered by intraperitoneal injection, in a dose response protocol, to adult rats. The drug was used to observe effects of opiate receptor blockade on cells of the pituitary gland and adjacent hypothalamus. At higher drug doses (5 mg/kg or 10 mg/kg), n...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/BF00964168
更新日期：1984-02-01 00:00:00
abstract：:The effects of vinpocetine on internal Na+ (Na(i)), cAMP accumulation, internal Ca2+ (Ca(i)) and excitatory amino acid neurotransmitters release, under resting and under depolarized conditions, was investigated in rat striatum synaptosomes. Veratridine (20 microM) or high K+ (30 mM) were used as depolarizing agents. R...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1023/a:1021164418478
更新日期：1999-12-01 00:00:00
abstract：:In this study, changes of the expression of two mitochondrial and two nuclear genes encoding the subunits of cytochrome c oxidase (CO) and NADH dehydrogenase (ND) were studied in the hippocampus, inferior parietal lobule, and cerebellum of 10 Alzheimer's disease (AD) and 10 age-matched control subjects. The altered pr...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1023/a:1020783614031
更新日期：1999-06-01 00:00:00
abstract：:Glutamine synthetase (GS) is the major glutamine-forming enzyme of vertebrates and is accepted to be a marker of astroglial cells. Maturation of astroglial cells is characterized by an increase of GS activity, and the regulation of this enzyme is the topic of many publications. Because of the fundamental role of the G...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-005-2754-5
更新日期：2005-05-01 00:00:00
abstract：:Protein kinase A (PKA) plays a crucial role in tau hyperphosphorylation, an early event of Alzheimer disease (AD), and 17beta-estradiol replacement in aging women forestalls the onset of AD. However, the role of estradiol in PKA-induced tau hyperphosphorylation is not known. Here, we investigated the effect of 17beta-...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-008-9638-4
更新日期：2008-09-01 00:00:00
abstract：:In the present study, we evaluated the expression of some proliferation and differentiation markers in 15 DIV astrocyte cultures pretreated or not with 0.5 mM glutamate for 24 h and than maintained under chronic or acute treatment with 50 μM R(+)enantiomer or raceme alpha-lipoic acid (ALA). GFAP expression significant...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-010-0256-6
更新日期：2010-12-01 00:00:00
abstract：:The importance of astrocytic K(+) uptake for extracellular K(+) ([K(+)](e)) clearance during neuronal stimulation or pathophysiological conditions is increasingly acknowledged. It occurs by preferential stimulation of the astrocytic Na(+),K(+)-ATPase, which has higher K(m) and V(max) values than its neuronal counterpa...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-012-0938-3
更新日期：2013-03-01 00:00:00
abstract：:It is thought that changes in gene expression in the brain mediate chronic ethanol-induced complex behaviors such as tolerance, dependence, and sensitization, and also relate to ethanol-induced brain toxicity. Using high-density filter-based cDNA microarrays (GeneFilters), we analyzed the expression of over 5000 genes...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1023/a:1020937728506
更新日期：2002-10-01 00:00:00
abstract：:The features of neuronal damage induced by the mitochondrial toxin NaN(3) were investigated in rat primary cortical neuron cultures. Cell viability (MTT colorimetric determination) and transmembrane mitochondrial potential (J-C1 fluorescence) were concentration-dependently reduced 24 h after NaN(3); neither nuclear fr...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-008-9852-0
更新日期：2009-05-01 00:00:00
abstract：:The extracellular amino acid content was measured in the parietal cortex in portacaval and sham operated rats, using the brain dialysis technique. The amino acid content of the perfusate was determined for 10 min before and during stimulation with potassium chloride. Basal levels of aspartate, glutamine, glycine, meth...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/BF00972136
更新日期：1987-03-01 00:00:00
abstract：:Nerve growth factor (NGF) has been isolated from human placental tissue. Using the chicken embryo dorsal root ganglia assay, we determined levels of NGF activity for the amnion, placental cotyledons, cord serum, fetal serum, and maternal serum. The highest levels of NGF activity were measured in placental cotyledons. ...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/BF00964058
更新日期：1978-04-01 00:00:00
abstract：:The changes in both the levels of some free amino acids and their metabolism in the rat brain during the first 24 hr of postnatal life were studied. The content of glutamic acid decreased for the first 2 hr; it remained at the lowest level for the next 4 hr, when it began to increase. The content of alanine decreased ...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/BF00966169
更新日期：1980-10-01 00:00:00
abstract：:We have previously showed that peptide neurotensin inhibits neuronal Na(+), K(+)-ATPase activity, an effect which involves high affinity neurotensin receptor. Nitric oxide (NO) acts as a neurotransmitter or as a neuromodulator when it is synthesized by neuronal nitric oxide synthase. Neurotensin effect on Na(+), K(+)-...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-011-0552-9
更新日期：2011-12-01 00:00:00
abstract：:The binding of the enkephalin dimer [D-Ala2, Leu5-NH-CH2-]2 (DPE2) is characterized by its high affinity for receptors on NG108-15 hybrid cells, the affinity constant K = 4.7 X 10(9) M-1 is up to 8-fold that of monomers (0.6 to 1.0 X 10(9) M-1), and a maximal binding capacity equal to one half that of the monomers. Ki...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/BF00965208
更新日期：1986-06-01 00:00:00
abstract：:Age related changes in brain cortex NO metabolism were investigated in mitochondria and cytosolic extracts from youth to adulthood. Decreases of 19%, 40% and 71% in NO production were observed in mitochondrial fractions from 3, 7, and 14 months old rats, respectively, as compared with 1-month-old rats. Decreased nNOS ...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-007-9570-z
更新日期：2008-07-01 00:00:00
abstract：:Cholinergic muscarinic receptors, when stimulated by arecoline, can activate cytosolic phospholipase A(2) (cPLA(2)) to release arachidonic acid (AA) from membrane phospholipid. This signal can be imaged in the brain in vivo using quantitative autoradiography following the intravenous injection of radiolabeled AA, as a...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1007/s11064-007-9372-3
更新日期：2007-11-01 00:00:00
abstract：:N-methyl-D-aspartate (NMDA) inhibits carbachol-stimulated phosphoinositide breakdown in rat brain cortical slices but not in isolated membranes (1). To gain insight into the mechanisms, we examined the effects of NMDA on carbachol-stimulated [3H]inositol phosphate and intermediates of phosphatidylinositol cycle accumu...
journal_title：Neurochemical research
pub_type： 杂志文章
doi：10.1023/a:1022426204583
更新日期：1997-05-01 00:00:00
