Abstract:
OBJECTIVE:Oxidative stress in the brain is highly prevalent in many neurodegenerative disorders including lysosomal storage disorders, in which neurodegeneration is a devastating manifestation. Despite intense studies, a precise mechanism linking oxidative stress to neuropathology in specific neurodegenerative diseases remains largely unclear. METHODS:Infantile neuronal ceroid lipofuscinosis (INCL) is a devastating neurodegenerative lysosomal storage disease caused by mutations in the ceroid lipofuscinosis neuronal-1 (CLN1) gene encoding palmitoyl-protein thioesterase-1. Previously, we reported that in the brain of Cln1 (-/-) mice, which mimic INCL, and in postmortem brain tissues from INCL patients, increased oxidative stress is readily detectable. We used molecular, biochemical, immunohistological, and electrophysiological analyses of brain tissues of Cln1 (-/-) mice to study the role(s) of oxidative stress in mediating neuropathology. RESULTS:Our results show that in Cln1 (-/-) mice oxidative stress in the brain via upregulation of the transcription factor, CCAAT/enhancer-binding protein-δ, stimulated expression of serpina1, which is an inhibitor of a serine protease, neurotrypsin. Moreover, in the Cln1 (-/-) mice, suppression of neurotrypsin activity by serpina1 inhibited the cleavage of agrin (a large proteoglycan), which substantially reduced the production of agrin-22, essential for synaptic homeostasis. Direct whole-cell recordings at the nerve terminals of Cln1 (-/-) mice showed inhibition of Ca(2+) currents attesting to synaptic dysfunction. Treatment of these mice with a thioesterase-mimetic small molecule, N-tert (Butyl) hydroxylamine (NtBuHA), increased agrin-22 levels. INTERPRETATION:Our findings provide insight into a novel pathway linking oxidative stress with synaptic pathology in Cln1 (-/-) mice and suggest that NtBuHA, which increased agrin-22 levels, may ameliorate synaptic dysfunction in this devastating neurodegenerative disease.
journal_name
Ann Clin Transl Neuroljournal_title
Annals of clinical and translational neurologyauthors
Peng S,Xu J,Pelkey KA,Chandra G,Zhang Z,Bagh MB,Yuan X,Wu LG,McBain CJ,Mukherjee ABdoi
10.1002/acn3.261subject
Has Abstractpub_date
2015-11-06 00:00:00pages
1085-104issue
12issn
2328-9503pii
ACN3261journal_volume
2pub_type
杂志文章abstract:OBJECTIVE:To assess the predictive potential of the complete response pattern from the University of Pennsylvania Smell Identification Test for the diagnosis of Parkinson's disease. METHODS:We analyzed a large dataset from the Arizona Study of Aging and Neurodegenerative Disorders, a longitudinal clinicopathological s...
journal_title:Annals of clinical and translational neurology
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journal_title:Annals of clinical and translational neurology
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更新日期:2021-01-18 00:00:00
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更新日期:2020-12-18 00:00:00
abstract:Background:There is currently no formal method for predicting the range expected in an individual's seizure counts. Having access to such a prediction would be of benefit for developing more efficient clinical trials, but also for improving clinical care in the outpatient setting. Methods:Using three independently col...
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pub_type: 杂志文章
doi:10.1002/acn3.173
更新日期:2015-04-01 00:00:00
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更新日期:2020-01-01 00:00:00
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更新日期:2018-07-03 00:00:00
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doi:10.1002/acn3.42
更新日期:2014-04-01 00:00:00
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pub_type: 杂志文章
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更新日期:2020-05-01 00:00:00
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doi:10.1002/acn3.218
更新日期:2015-09-01 00:00:00
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pub_type: 杂志文章
doi:10.1002/acn3.620
更新日期:2018-08-15 00:00:00
abstract:OBJECTIVE:The neuropathogenesis of postoperative delirium remains unknown. Low cerebrospinal fluid (CSF) βamyloid protein (Aβ) and high CSF Tau levels are associated with Alzheimer's disease. We therefore assessed whether lower preoperative CSF Aβ/Tau ratio was associated with higher incidence and greater severity of p...
journal_title:Annals of clinical and translational neurology
pub_type: 杂志文章
doi:10.1002/acn3.58
更新日期:2014-05-01 00:00:00
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journal_title:Annals of clinical and translational neurology
pub_type: 杂志文章
doi:10.1002/acn3.51060
更新日期:2020-06-01 00:00:00
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pub_type: 杂志文章
doi:10.1002/acn3.503
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pub_type: 临床试验,杂志文章
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journal_title:Annals of clinical and translational neurology
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更新日期:2014-02-01 00:00:00
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更新日期:2017-09-27 00:00:00
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pub_type: 杂志文章
doi:10.1002/acn3.749
更新日期:2019-03-07 00:00:00
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journal_title:Annals of clinical and translational neurology
pub_type: 杂志文章
doi:10.1002/acn3.50888
更新日期:2019-09-01 00:00:00
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journal_title:Annals of clinical and translational neurology
pub_type:
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更新日期:2021-01-01 00:00:00
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journal_title:Annals of clinical and translational neurology
pub_type: 杂志文章
doi:10.1002/acn3.719
更新日期:2019-01-22 00:00:00
abstract::Radiation necrosis mostly occurs in and near the radiation field. We used magnetic resonance imaging to study radiation-induced necrosis of atypical onset, severity, and extent following stereotactic radiosurgery for a symptomatic arteriovenous malformation. Susceptibility-sensitive imaging, T1-relaxation, myelin wate...
journal_title:Annals of clinical and translational neurology
pub_type: 杂志文章
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更新日期:2018-12-10 00:00:00
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pub_type: 杂志文章
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更新日期:2020-07-01 00:00:00
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pub_type: 杂志文章
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更新日期:2019-08-01 00:00:00
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journal_title:Annals of clinical and translational neurology
pub_type: 杂志文章
doi:10.1002/acn3.320
更新日期:2016-06-02 00:00:00