Abstract：
:Alteration in the lysosomal system (LS) may represent a central mechanism in neurodegeneration. 6-Hydroxydopamine (6-OHDA) induces oxidative stress and cell death in catecholaminergic cells. The LS and caspases participate in apoptosis, although the mechanism(s) that is involved is not completely understood. Here, we show that Pheochromocytoma (PC12) cells exposed to 6-OHDA results in lysosomal dysregulation, caspase activation and cell death. Cells exposed to 6-OHDA increased expression and release of cystatin C (CC) and suppressed cathepsin B (CB). CB activity significantly declined 24h following exposure to 6-OHDA, however neutralization of CC restored CB activity. Cathepsin D (CD) and caspase-3 activity also increased following exposure to 6-OHDA. Inhibition of CD and caspase-3 with pepstatin A (PA) and DEVD-Cho, respectively, attenuated the 6-OHDA induced cell death at 48 and 72 h. However, the CB inhibitor CA-074 Me failed to protect cells. Additionally, poly-ADP-ribose polymerase (PARP) cleavage was evaluated after exposure to 6-OHDA and PA, CA-074 Me, and DEVD-Cho. Only DEVD-Cho significantly decreased PARP cleavage following exposure to 6-OHDA. Hence, caspase-3 mediated PARP cleavage following exposure to 6-OHDA appears independent of CB and CD alterations. These studies suggest alternate pathways and potential therapeutic targets of cell death associated with oxidative stress, CC, and lysosomal dysregulation.
journal_name
Neurochem Intjournal_title
Neurochemistry internationalauthors
Lee DC,Womble TA,Mason CW,Jackson IM,Lamango NS,Severs WB,Palm DEdoi
10.1016/j.neuint.2006.12.006subject
Has Abstractpub_date
2007-03-01 00:00:00pages
607-18issue
4eissn
0197-0186issn
1872-9754pii
S0197-0186(06)00356-1journal_volume
50pub_type
杂志文章abstract：:The amyloid precursor protein (APP) and presenilin-1 (PS-1) are not only of importance for the normal functioning of the various neurons, but also play central roles in the pathogenesis of Alzheimer's disease (AD). Through the use of immunohistochemical and Western blot techniques, the bidirectional axonal transport o...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/s0197-0186(02)00014-1
更新日期：2002-12-01 00:00:00
abstract：:Gamma-aminobutyric acid (GABA) is the main chemical inhibitory neurotransmitter in the brain. In the central nervous system (CNS) it acts on two distinct types of receptor: an ion channel, i.e., an "ionotropic" receptor permeable to Cl- and HCO3- (GABAA receptors) and a G-protein coupled "metabotropic" receptor that i...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/j.neuint.2007.07.010
更新日期：2008-01-01 00:00:00
abstract：:Ubiquitin (Ub) carboxy terminal hydrolase (UCH)-L1 and UCH-L3 are two of the deubiquitinating enzymes expressed in the brain. Both gad mice, which lack UCH-L1 expression and Uchl3 knockout mice exhibit neurodegeneration, although at distinct areas. These phenotypes indicate the importance of UCH-L1 and UCH-L3 in the r...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2008.12.013
更新日期：2009-05-01 00:00:00
abstract：:The vasoactive peptide, endothelin-1 (ET-1) has been implicated in the pathophysiology of various diseases. Recently, we have shown that human brain endothelial cells both secrete and express immunoreactive ET-1 high-affinity ETA receptors coupled to activation of phospholipase C (PLC). The present study demonstrates ...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(93)90082-g
更新日期：1993-10-01 00:00:00
abstract：:Using immunohistochemical methods at the light and electron microscope level, the coexistence between a hypophysiotropic factor and an apparently unrelated neuropeptide was demonstrated in three distinct infundibular neuronal systems. The present results emphasize the importance of demonstrating peptide coexistences f...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(84)90003-2
更新日期：1984-01-01 00:00:00
abstract：:Ketone bodies serve as a source of energy and as precursors for lipid synthesis in developing brain. Neurons, astrocytes and oligodendroglia all have the necessary enzymes for metabolizing ketone bodies. In this in vivo study it was found that all three cell types were able to use ketone bodies as precursors for the s...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(91)90040-k
更新日期：1991-01-01 00:00:00
abstract：:E1 mice are an animal model of human epilepsy (idiopathic complex partial seizures). We have previously demonstrated abrupt poly(A)(+) RNA expression in liver from 1-day-old E1 mouse [Mita et al., 1991. Devl. Brain Res. 64, 27-35]. In the present study, we constructed a cDNA library of the poly(A)(+) RNA. By analyzing...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/s0197-0186(00)00089-9
更新日期：2001-04-01 00:00:00
abstract：:Increased concentrations of kynurenine pathway metabolites have been reported by several groups for disorders involving psychosis, including schizophrenia and bipolar disorder. To identify components of the pathway that may be relevant as biomarkers or may underlie the etiology of psychosis, it is essential to charact...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2008.01.013
更新日期：2008-05-01 00:00:00
abstract：:Transport activity of d-pipecolic acid and of l-pipecolic acid in mouse brain and peripheral tissues were tested, and the effect of immobilization stress was described, along with the method for preparative, enantiomeric resolution and purification of d,l-pipecolic acid using high performance liquid chromatography equ...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(88)90057-5
更新日期：1988-01-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(92)90091-5
更新日期：1992-12-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(95)00123-9
更新日期：1996-05-01 00:00:00
abstract：:gamma-Aminobutyric acid (GABA) levels and the activity of glutamate decarboxylase were measured in homogenates of rat brain cortical tissue, at different times after chronic intracortical infusion of GABA in vivo during 2, 6 or 24 h. Cortical electrical activity was also recorded. As previously described, about 1 h af...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(94)90114-7
更新日期：1994-04-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/s0197-0186(99)00033-9
更新日期：1999-07-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(87)90180-x
更新日期：1987-01-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/s0197-0186(96)00158-1
更新日期：1997-08-01 00:00:00
abstract：:Short-term supplementation of low protein diet (LPD) or high protein diet (HPD) to the aged (18 months old) rats did not change the hypothalamic GABAergic activity and immune response. Long-term supplementation of LPD on the other hand, enhanced hypothalamic GABAergic activity with an immunopotentiation by increasing ...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/s0197-0186(97)00062-4
更新日期：1998-02-01 00:00:00
abstract：:GM1 ganglioside, after intravenous injection into rats, is absorbed and taken up by various organs and tissues, including brain. The capacity of brain to take up gangliosides, referred to weight unit, is comparable to that of kidney and muscle. After injection of [Gal-(3)H]GM1 a relevant portion of brain associated ra...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(89)90164-2
更新日期：1989-01-01 00:00:00
abstract：:Bindings of glutamate receptor agonists and related modulators were investigated in 10 discrete tissues from gerbil brain using a biochemical technique. There appeared considerable discrepancies, in respect of intrahippocampal profiles, from reported data by autoradiography on rat brain. In the gerbil, an almost equiv...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(93)90066-e
更新日期：1993-01-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2017.03.008
更新日期：2017-10-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2009.08.013
更新日期：2010-01-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/s0197-0186(99)00094-7
更新日期：1999-12-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(82)90079-1
更新日期：1982-01-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(82)90066-3
更新日期：1982-01-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(94)90065-5
更新日期：1994-09-01 00:00:00
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journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(90)90032-o
更新日期：1990-01-01 00:00:00
abstract：:Cerebral edema is a potentially life-threatening complication shared by diseases of different etiology, such as diabetic ketoacidosis, acute liver failure, high altitude exposure, dialysis disequilibrium syndrome, and salicylate intoxication. Pulmonary edema is also habitually present in these disorders, indicating th...
journal_title：Neurochemistry international
pub_type： 杂志文章,评审
doi：10.1016/j.neuint.2012.05.007
更新日期：2012-07-01 00:00:00
abstract：:We demonstrated that genetically modified fibroblasts can be encapsulated into biocompatible, biodegradable spheres retaining their viability and capacity to continuously secrete nerve growth factor (NGF) for at least two months. Genetically engineered rat fibroblasts producing NGF were encapsulated in an alginate-pol...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(93)90089-n
更新日期：1993-08-01 00:00:00
abstract：:The present studies were performed in order to examine the possible role of cyclic GMP-stimulated phosphodiesterase (cGMP-PDE) activity in the inhibitory action of the inflammatory peptide bradykinin on cyclic AMP (cAMP) accumulation in D384 cells. Bradykinin decreased the forskolin-stimulated cAMP accumulation in the...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/0197-0186(92)90149-l
更新日期：1992-09-01 00:00:00
abstract：:The influx of extracellular Zn(2+) into dentate granule cells is nonessential for dentate gyrus long-term potentiation (LTP) and the physiological significance of extracellular Zn(2+) dynamics is unknown in the dentate gyrus. Excess increase in extracellular Zn(2+) in the hippocampal CA1, which is induced with excitat...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2015.05.006
更新日期：2015-08-01 00:00:00
abstract：:A noticeable loss of cardiolipin, a significant accumulation of fluorescent products of lipid peroxidation and an increased ability to produce reactive oxygen species in vitro are characteristics of aged rat brain mitochondria, as has been demonstrated in this study. In contrast mitochondrial electron transport chain ...
journal_title：Neurochemistry international
pub_type： 杂志文章
doi：10.1016/j.neuint.2007.01.007
更新日期：2007-04-01 00:00:00
