Abstract:
:Autophagy is an intracellular degradation pathway with dynamic interactions for eliminating damaged organelles and protein aggregates by lysosomal digestion. The EGFP-conjugated microtubule-associated protein 1 light chain 3 (EGFP-LC3) serves to monitor autophagic process. Extracellular β-amyloid peptide accumulation is reported as a major cause in Alzheimer's disease (AD) pathogenesis; large numbers of autophagic vacuoles accumulate in patients' brains. We previously demonstrated that extracellular Aβ (eAβ) induces strong autophagic response and α7nAChR acts as a carrier to bind with eAβ; which further inhibits Aβ-induced neurotoxicity via autophagic degradation. In the present study, we overexpressed LC3 in both neuroblastoma cells (SH-SY5Y/pEGFP-LC3) and mice (TgEGFP-LC3) to assess the effect of LC3 overexpression on Aβ neurotoxicity. SH-SY5Y/pEGFP-LC3 cells and primary cortical neuron cultures derived from E17 (embryonic day 17) TgEGFP-LC3 mice showed not only better resistance against Aβ neurotoxicity but also higher α7nAChR expression and autophagic activity than control. Administration of α-bungarotoxin (α-BTX) to block α7nAChR antagonized the neuroprotective action of SH-SY5Y/pECGF-LC3 cells, suggesting that eAβ binding with α7nAChR is an important step in Aβ detoxification. LC3 overexpression thus exerts neuroprotection through increasing α7nAChR expression for eAβ binding and further enhancing autophagic activity for Aβ clearance in vitro and in vivo.
journal_name
Neuropharmacologyjournal_title
Neuropharmacologyauthors
Hung SY,Huang WP,Liou HC,Fu WMdoi
10.1016/j.neuropharm.2015.02.003subject
Has Abstractpub_date
2015-06-01 00:00:00pages
243-51eissn
0028-3908issn
1873-7064pii
S0028-3908(15)00049-0journal_volume
93pub_type
杂志文章abstract::Long-term potentiation (LTP) resembles memory in that it is initially unstable and then, over about 30 min, becomes increasingly resistant to disruption. Here we present an hypothesis to account for this initial consolidation effect and consider implications that follow from it. Anatomical studies indicate that LTP is...
journal_title:Neuropharmacology
pub_type: 杂志文章,评审
doi:10.1016/j.neuropharm.2006.07.027
更新日期:2007-01-01 00:00:00
abstract::Neonatal administration of monosodium glutamate (MSG) destroyed perikarya in the arcuate nucleus and median eminence, including those that contain met-enkephalin and beta-endorphin and it increased the density of opiate receptors in the midbrain. Treatment with glutamate decreased the analgesic response on the jump te...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(84)90231-4
更新日期:1984-10-01 00:00:00
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(00)00195-7
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journal_title:Neuropharmacology
pub_type: 杂志文章,评审
doi:10.1016/j.neuropharm.2018.09.023
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2011.08.046
更新日期:2011-12-01 00:00:00
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2014.01.037
更新日期:2014-06-01 00:00:00
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2005.08.015
更新日期:2005-11-01 00:00:00
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(90)90005-c
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(84)90012-1
更新日期:1984-08-01 00:00:00
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(00)00035-6
更新日期:2000-06-08 00:00:00
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2012.05.027
更新日期:2012-09-01 00:00:00
abstract::Intraventricular administration of substance P (SP), of the heptapeptide SP5-11 and of DiMe-C7, a stable analogue of SP5-11 induced locomotor activation in rats and in mice. The activating effect of substance P was longer-lasting in mice than in rats, whereas the effect of the two heptapeptides appears to be more mark...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(84)90234-x
更新日期:1984-10-01 00:00:00
abstract::Alcohol damages the developing brain and can lead to fetal alcohol syndrome. One of alcohol's most important neuropathologic effects is neuronal death. As neurons mature, they become less vulnerable to alcohol-induced death because they acquire a protective signaling pathway, mediated by nitric oxide (NO). This pathwa...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2008.12.006
更新日期:2009-03-01 00:00:00
abstract::Recently it has been reported that "I(f) channel blockers", which block the hyperpolarization-activated inward current (I(f)) in heart sino atrial node cells, also block the hyperpolarization-activated inward current (I(h)) in other tissues. Here we compared the effects of one of these agents, ZD7288 [4-(N-ethyl-N-phe...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(99)00207-5
更新日期:2000-04-27 00:00:00
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(83)90239-3
更新日期:1983-03-01 00:00:00
abstract::Systemic administration of thiazolidinediones reduces peripheral inflammation in vivo, presumably by acting at peroxisome proliferator-activated receptor gamma (PPARgamma) in peripheral tissues. Based on a rapidly growing body of literature indicating the CNS as a functional target of PPARgamma actions, we postulated ...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2009.10.008
更新日期:2010-02-01 00:00:00
abstract::Stroke is one of the leading causes of death and serious disability in Westernized societies. The risk of stroke approximately doubles with each decade after the age of 55. Therefore, even though the incidence of stroke is declining, mostly because of the efforts to lower blood pressure and reduce smoking, the overall...
journal_title:Neuropharmacology
pub_type: 杂志文章,评审
doi:10.1016/j.neuropharm.2017.08.022
更新日期:2018-07-01 00:00:00
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journal_title:Neuropharmacology
pub_type: 杂志文章,评审
doi:10.1016/j.neuropharm.2011.02.017
更新日期:2011-09-01 00:00:00
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journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(82)90009-0
更新日期:1982-07-01 00:00:00
abstract::The influence of the subunit composition of human GABA(A) receptors upon the GABA-modulatory properties of 5alpha-pregnan-3alpha-ol-20-one (5alpha,3alpha) has been examined using the Xenopus laevis oocyte expression system and the two electrode voltage-clamp technique. Steroid potency (EC(50)) is modestly influenced b...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(02)00172-7
更新日期:2002-09-01 00:00:00
abstract::Orexin-A, -B play a crucial role in arousal and feeding by activating two G-protein-coupled receptors: orexin receptor 1 (OX1R) and orexin receptor 2 (OX2R). Orexins, along with orexin receptors, are expressed in retinal neurons, and they have been shown to differentially modulate excitatory AMPA receptors of amacrine...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2018.01.007
更新日期:2018-05-01 00:00:00
abstract::Long-term alcohol use causes widespread changes in gene expression in the human brain. Aberrant gene expression changes likely contribute to the progression from occasional alcohol use to alcohol use disorder (including alcohol dependence). Transcriptome studies have identified individual gene candidates that are link...
journal_title:Neuropharmacology
pub_type: 杂志文章,评审
doi:10.1016/j.neuropharm.2017.02.017
更新日期:2017-08-01 00:00:00
abstract::We have used patch-clamp recording from cultured neurones, immunohistochemistry and gene deletion techniques to characterize the P2X receptors present in mouse otic ganglion neurones, and demonstrated the presence of similar receptors in rat neurones. All neurones from wild-type (WT) mice responded to ATP (EC(50) 109 ...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2004.01.009
更新日期:2004-06-01 00:00:00
abstract::The aim of the present study was to investigate if different levels of circulating corticosterone (CORT) modulate the effect of nicotine on prepulse inhibition (PPI), a measure of sensorimotor gating that is disrupted in schizophrenia and other mental illnesses. Four groups of mice were investigated: sham-operated, ad...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2004.08.015
更新日期:2005-01-01 00:00:00
abstract::Metabotropic glutamate (mGlu) receptors are implicated in many neurological and psychiatric diseases and are the targets of therapeutic agents currently in clinical development. Their activation has diverse effects in the central nervous system (CNS) that includes an involvement in synaptic plasticity. We previously r...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2013.03.011
更新日期:2013-11-01 00:00:00
abstract::Maternal behavior and anxiety are potently modulated by the brain corticotropin-releasing factor (CRF) system postpartum. Downregulation of CRF in limbic brain regions is essential for appropriate maternal behavior and an adaptive anxiety response. Here, we focus our attention on arguably the most important brain regi...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2018.02.019
更新日期:2018-05-01 00:00:00
abstract::The effect of chronic (4 weeks) treatment of rats with the antidepressant drugs desipramine, maprotiline, chlorimipramine, zimelidine or iprindol on the sensitivity of presynaptic alpha 2- and postsynaptic beta-adrenoceptors in neocortical slices was investigated. Acute (1 day) treatment with the antidepressants did n...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(84)80002-7
更新日期:1984-02-01 00:00:00
abstract::The ventromedial nucleus of the hypothalamus (VMH) plays an important role in feeding and energy homeostasis. Electroconvulsive seizure (ECS) therapy is highly effective in the treatment of several psychiatric diseases, including depression, but may also have beneficial effects in other neurological diseases. Although...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2013.03.033
更新日期:2013-08-01 00:00:00
abstract::The mechanisms underlying lateralization and progression of motor symptoms from unilateral to bilateral in Parkinson's disease (PD) remain to be elucidated. In addition, the molecular mechanisms involved in levodopa-induced dyskinesias (LIDs) depending on lateralization and disease progression from unilaterally to bil...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2015.06.004
更新日期:2015-10-01 00:00:00
abstract::Previous research shows Ouabain (OUA) to bind Na, K-ATPase, thereby triggering a number of signaling pathways, including the transcription factors NFᴋB and CREB. These transcription factors play a key role in the regulation of BDNF and WNT-β-catenin signaling cascades, which are involved in neuroprotection and memory ...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2018.08.008
更新日期:2018-09-15 00:00:00