Abstract：
:Perhaps the most reproducible early event induced by the interaction of amyloid beta peptide (A beta) with the cell is the inhibition of cellular 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) reduction. We recently demonstrated that cytotoxic amyloid peptides such as A beta and human amylin inhibit cellular MTT reduction by dramatically enhancing MTT formazan exocytosis. We now show the following: (a) Insulin and glucagon, when converted to fibrils with beta-pleated sheet structure, induce MTT formazan exocytosis that is indistinguishable from that induced by A beta. NAC35, an amyloidogenic fragment of alpha-synuclein (or NACP), also induces MTT formazan exocytosis. (b) All protein fibrils with the beta-pleated sheet structure examined are toxic to rat hippocampal neurons. (c) Many sterol sex hormones (e.g., estradiol and progesterone) block amyloid fibril-enhanced MTT formazan exocytosis as well as MTT formazan exocytosis in control cells by acting at a common late step in the exocytic pathway. Steroids fail, however, to protect hippocampal neurons from acute amyloid fibril toxicity. These findings suggest that the ability to enhance MTT formazan exocytosis and to induce neurotoxicity are common biological activities of protein fibrils with beta-pleated sheet structure but that enhanced MTT formazan exocytosis is not sufficient for acute A beta neurotoxicity.
journal_name
J Neurochemjournal_title
Journal of neurochemistryauthors
Liu Y,Schubert Ddoi
10.1046/j.1471-4159.1998.71062322.xsubject
Has Abstractpub_date
1998-12-01 00:00:00pages
2322-9issue
6eissn
0022-3042issn
1471-4159journal_volume
71pub_type
杂志文章abstract：:In vivo microdialysis was used to determine the extent to which ionotropic glutamate receptors in the ventral tegmental area (VTA) regulate dopamine release in the nucleus accumbens. Coapplication of 2-amino-5-phosphonopentanoic acid (AP5; 200 microM) and 6-cyano-7-nitroquinoxaline-2,3-dione (CNQX; 50 microM) to the V...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1995.65031407.x
更新日期：1995-09-01 00:00:00
abstract：:To evaluate the ability of ependymal, microglial and oligodendroglial cells to degrade leucine, the presence of 3-methylcrotonyl-CoA carboxylase (MCC) was investigated in cultures of these cells. MCC is a biotin-containing heterodimeric enzyme that is specific for the irreversible part of the leucine catabolic pathway...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2006.03819.x
更新日期：2006-06-01 00:00:00
abstract：:The later phases of neuronal plasticity are invariably dependent on gene transcription. Induction of the transcription factor Zif268 (Egr-1) in neurones is closely associated with many forms of functional plasticity, yet the neuronal target genes modulated by Zif268 have not been characterized. After transfection of a...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2005.03400.x
更新日期：2005-11-01 00:00:00
abstract：:The interaction of triethyltin (TET) and trimethyltin (TMT) with rat brain astrocytes in vitro was investigated. Both compounds are highly neurotoxic after in vivo application, cause neurobehavioral changes, and elicit neuronal and glial responses in the CNS. In this study, 5-week-old cultures were exposed to TMT or T...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1994.63062202.x
更新日期：1994-12-01 00:00:00
abstract：:Primary rat fibroblasts genetically modified to express Drosophila choline acetyltransferase (dChAT) synthesize and release acetylcholine (ACh) in vitro. The ACh produced from the transduced fibroblasts was found to be enhanced by increasing amounts of choline chloride in the culture media. These dChAT-expressing cell...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1993.tb13625.x
更新日期：1993-10-01 00:00:00
abstract：:Incubation of beta-endorphin with cytosolic and particulate fractions of rat brain resulted in the formation of several peptides, including gamma-endorphin [beta-endorphin-(1-17)] and beta-endorphin-(18-31), indicating the presence of enzyme activity cleaving the Leu17-Phe18 bond of beta-endorphin. An assay for this L...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1989.tb07249.x
更新日期：1989-06-01 00:00:00
abstract：:De novo heterozygous mutations in the STX1B gene, encoding syntaxin 1B, cause a familial, fever-associated epilepsy syndrome. Syntaxin 1B is an essential component of the pre-synaptic neurotransmitter release machinery as a soluble N-ethylmaleimide-sensitive factor attachment protein receptor protein that regulates th...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.15159
更新日期：2020-08-28 00:00:00
abstract：:In a light and electron microscopic immunocytochemical study we have examined the distribution of myelin basic protein (MBP), 2',3'-cyclic nucleotide 3'-phosphodiesterase (CNP), and myelin/oligodendroglial glycoprotein (MOG) within CNS myelin sheaths and oligodendrocytes of adult Sprague-Dawley rats. Ultrastructural i...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1989.tb10930.x
更新日期：1989-01-01 00:00:00
abstract：:Liver fatty acid-binding protein (FABP1, L-FABP) has high affinity for and enhances uptake of arachidonic acid (ARA, C20:4, n-6) which, when esterified to phospholipids, is the requisite precursor for synthesis of endocannabinoids (EC) such as arachidonoylethanolamide (AEA) and 2-arachidonoylglycerol (2-AG). The brain...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.13664
更新日期：2016-08-01 00:00:00
abstract：:Interleukin-1 (IL-1) is a proinflammatory cytokine released by many cell types that acts in both an autocrine and/or paracrine fashion. While IL-1 is best described as an important mediator of the peripheral immune response during infection and inflammation, increasing evidence implicates IL-1 signaling in the pathoge...
journal_title：Journal of neurochemistry
pub_type： 杂志文章,评审
doi：10.1111/j.1471-4159.2008.05315.x
更新日期：2008-07-01 00:00:00
abstract：:The novel N-methyl-D-aspartate receptor channel ligand (+)-[3H]5-methyl-10,11-dihydro-5H-dibenzo[a,d]-cyclohepten-5, 10-imine maleate ([3H]MK-801) has been utilized to label this receptor in human brain tissue. Characteristics of [3H]MK-801 binding to well-washed membranes from 17 control subjects and 16 patients with...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1989.tb11760.x
更新日期：1989-09-01 00:00:00
abstract：:Acute nicotine administration stimulated [3H]norepinephrine ([3H]NE) release from cultured fetal locus coeruleus (LC) cells. The effect was concentration dependent, with an EC50 of 0.9 microM, and was abolished by removal of calcium from, or addition of tetrodotoxin (500 nM) to, the assay buffer. Other nicotinic recep...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1998.70020663.x
更新日期：1998-02-01 00:00:00
abstract：:It is generally accepted that in mammalian brain histamine is metabolized solely by histamine methyltransferase (HMT), to form tele-methylhistamine, then oxidized to tele-methylimidazoleacetic acid. However, histamine's oxidative metabolite in the periphery, imidazoleacetic acid (IAA), is also present in brain and CSF...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1995.65020818.x
更新日期：1995-08-01 00:00:00
abstract：:Acrolein is one of the most toxic byproducts of lipid peroxidation, and it has been shown to be associated with multiple pathological processes in trauma and diseases, including spinal cord injury, multiple sclerosis, and Alzheimer's disease. Therefore, suppressing acrolein using acrolein scavengers has been suggested...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.14025
更新日期：2017-06-01 00:00:00
abstract：:The present study demonstrates that [3H]imipramine binds to both high- and low-affinity imipramine binding components on membranes prepared from rat cerebral cortex. Scatchard and computer analyses of saturation experiments using a wide range of [3H]imipramine concentrations (0.5 nM-50 nM) revealed the presence of two...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1985.tb05494.x
更新日期：1985-07-01 00:00:00
abstract：:Amyloid beta (Aβ) peptide is the major constituent of the extracellular amyloid plaques deposited in the brains of Alzheimer's disease patients and is central to the pathogenic pathway causing this disease. The identity of the neurotoxic Aβ species remains elusive. We previously reported that Aβ toxicity correlates st...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.13443
更新日期：2016-02-01 00:00:00
abstract：:Chick imprinting behavior is a good model for the study of learning and memory. Imprinting object is recognized and processed in the visual wulst, and the memory is stored in the intermediate medial mesopallium in the dorsal pallium of the telencephalon. We identified chicken cholecystokinin (CCK)-expressing cells loc...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.2007.04733.x
更新日期：2007-09-01 00:00:00
abstract：:The elongation of arachidoyl-CoA (20:0-CoA) yielded 22:0 and 24:0 concomitantly, whereas the elongation of behenoyl-CoA (22:0-CoA) yielded only a negligible amount of 24:0 in adult swine cerebral microsomes. The dependence on time, pH, and the substrate concentrations were examined for the synthesis of 22:0 and 24:0 f...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1986.tb01746.x
更新日期：1986-05-01 00:00:00
abstract：:The inhibitory effect of an adenosine analogue, R-N6-phenylisopropyl adenosine (R-PIA), of the cholinergic agonist carbachol, and of morphine on 3H efflux from [3H]choline-labeled field-stimulated rat hippocampal slices was compared with that produced by two inhibitors of N- and L-type Ca2+ channels, omega-conotoxin (...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1990.tb01973.x
更新日期：1990-04-01 00:00:00
abstract：:The effects of hypoxia, aglycaemia, and hypoxia-aglycaemia on intrasynaptosomal free Ca2+ concentration ([Ca2+]i) have been investigated in rat brain synaptosomes prepared from animals aged 5, 10, 15, 20, 25, and 60 days. After 60 min of hypoxia there was no significant difference, when compared with controls, in basa...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1996.66062460.x
更新日期：1996-06-01 00:00:00
abstract：:Neuron-secreted factors induce astrocytic expression of the glutamate transporter, GLT-1 (excitatory amino acid transporter 2). In addition to their elaborate anatomic relationships with neurons, astrocytes also have processes that extend to and envelop the vasculature. Although previous studies have demonstrated that...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/jnc.14135
更新日期：2017-12-01 00:00:00
abstract：:A previous report has described the presence of t-[35S]-butylbicyclophosphorothionate binding sites and GABA-gated Cl- flux in the human neuroblastoma IMR-32 cell line. We now report the further characterisation of this binding site and, even more important, the identification of the GABAA receptor alpha 3 sub-unit ex...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1993.tb02182.x
更新日期：1993-08-01 00:00:00
abstract：:These studies were undertaken to test the hypothesis that alterations in phosphatidylinositol metabolism can modulate neurotransmitter release in the central nervous system. The effects of 1,2-diacylglycerols (DAGs) on dopamine release in the rat central nervous system were determined by measuring dopamine release fro...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1990.tb01922.x
更新日期：1990-02-01 00:00:00
abstract：:This paper proposes a tentative amino acid sequence of guinea pig myelin basic protein obtained by comparison of peptide fragments of the guinea pig and bovine proteins. Analyses of the tryptic peptides confirmed the known sequence differences in the NH2-terminal half of the molecule and showed that in the COOH-termin...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1984.tb06683.x
更新日期：1984-07-01 00:00:00
abstract：:We investigated the mechanism of increases in cyclic GMP levels in bovine superior cervical ganglion (SCG) in response to muscarinic receptor stimulation. Acetylcholine increased cyclic GMP levels in SCG. This increase was inhibited by NG-methyl-L-arginine (NMA), and the inhibition was reversed by L-arginine. Soluble ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1993.tb03628.x
更新日期：1993-09-01 00:00:00
abstract：:Oxidative stress has been implicated in mechanisms leading to neuronal cell injury in various pathological states of the brain. Here, we investigated the effect of peroxide exposure on the expression of genes coding for cytoplasmic and endoplasmic reticulum (ER) stress proteins. Primary neuronal cell cultures were exp...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2001.00206.x
更新日期：2001-03-01 00:00:00
abstract：:One of the most striking features of neurons in the mature peripheral nervous system is their ability to survive and to regenerate their axons following axonal injury. To perform a comprehensive survey of the molecular mechanisms that underlie peripheral nerve regeneration, we analyzed a cDNA library derived from the ...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2002.01060.x
更新日期：2002-09-01 00:00:00
abstract：:This study investigated the temporal expression and cell subtype distribution of activated caspase-3 following cortical impact-induced traumatic brain injury in rats. The animals were killed and examined for protein expression of the proteolytically active subunit of caspase-3, p18, at intervals from 6 h to 14 days af...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.2000.0751264.x
更新日期：2000-09-01 00:00:00
abstract：:We have demonstrated by indirect immunofluorescence the cellular localization of a monoclonal antibody (mAb 224-58), produced after immunization of a mouse with human central nervous system (CNS) myelin. Serologically, mAb 224-58 was found to be specific for 3'-sulfomonogalactosylglycolipids, namely 3'-sulfogalactosyl...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1111/j.1471-4159.1986.tb12986.x
更新日期：1986-02-01 00:00:00
abstract：:The protein kinases and protein phosphatases that act on tyrosine hydroxylase in vivo have not been established. Bovine adrenal chromaffin cells were permeabilized with digitonin and incubated with [gamma-32P]ATP, in the presence or absence of 10 microM Ca2+, 1 microM cyclic AMP, 1 microM phorbol dibutyrate, or variou...
journal_title：Journal of neurochemistry
pub_type： 杂志文章
doi：10.1046/j.1471-4159.1997.69062387.x
更新日期：1997-12-01 00:00:00
