Abstract：
:Activated astrocytes have been identified as the main source of the serine protease inhibitor alpha 1-antichymotrypsin (ACT), an acute phase protein that is tightly associated with amyloid plaques in Alzheimer's disease (AD) and in normal aged human and monkey brain. We analyzed the synthesis of ACT by cultured murine astrocytes in vitro. The murine astrocytes expressed an ACT-like antigen that crossreacted with antibodies to human ACT. The murine ACT-like protein is secreted by the astrocytes and is able to form an SDS-resistant complex with the serine protease cathepsin G, indicating that the secreted ACT is biologically active. We conclude that cultured primary astrocytes synthesize and secrete murine ACT in an active form. We, therefore, suggest that the ACT present within AD plaques is locally derived from plaque-associated activated astrocytes as a part of a glia-mediated local inflammatory response that is associated with the neurodegeneration seen in AD.
journal_name
Neurobiol Agingjournal_title
Neurobiology of agingauthors
Kanemaru K,Meckelein B,Marshall DC,Sipe JD,Abraham CRdoi
10.1016/0197-4580(96)00111-xsubject
Has Abstractpub_date
1996-09-01 00:00:00pages
767-71issue
5eissn
0197-4580issn
1558-1497pii
S019745809600111Xjournal_volume
17pub_type
杂志文章abstract：:Aging is accompanied by declines in memory performance, and particularly affects memories that rely on hippocampal-cortical systems, such as episodic and explicit. With aged populations significantly increasing, the need for preventing or rescuing memory deficits is pressing. However, effective treatments are lacking....
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2016.04.006
更新日期：2016-08-01 00:00:00
abstract：:Nicastrin and presenilin 1 are integral components of the high molecular weight gamma-secretase complexes that regulate proteolytic processing of various type I membrane proteins including amyloid precursor protein and Notch. At present, there is little information regarding the cellular distribution of nicastrin in t...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2006.12.005
更新日期：2008-05-01 00:00:00
abstract：:The ability to perceive and produce speech undergoes important changes in late adulthood. The goal of the present study was to characterize functional and structural age-related differences in the cortical network that support speech perception and production, using magnetic resonance imaging, as well as the relations...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2013.02.004
更新日期：2013-08-01 00:00:00
abstract：:Memory complaints of patients sometimes are not verified via standard cognitive testing. Acquisition of information in everyday life requires memorization in complex three-dimensional environments. The authors mimicked this with a photorealistic virtual environment (VE). Memory for verbal material and spatial scenery ...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2010.03.012
更新日期：2012-02-01 00:00:00
abstract：:Kisspeptin neurons in the rostral periventricular area of the third ventricle (RP3V) play a key role in relaying the positive feedback effects of estradiol that activate gonadotropin-releasing hormone (GnRH) neurons and drive a surge in the GnRH/luteinizing hormone (LH) level. However, the precise role of kisspeptin n...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2013.08.038
更新日期：2014-03-01 00:00:00
abstract：:Age at the time of brain injury is generally considered an important determinant in recovery of function. The implication is that older individuals show less recovery. Existing data challenge this common notion, but suggest differential effects of brain damage in aged subjects. To assess these differences old rats wer...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/0197-4580(83)90018-0
更新日期：1983-10-01 00:00:00
abstract：:In humans, action errors and perceptual novelty elicit activity in a shared frontostriatal brain network, allowing them to adapt their ongoing behavior to such unexpected action outcomes. Healthy and pathologic aging reduces the integrity of white matter pathways that connect individual hubs of such networks and can i...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2015.10.014
更新日期：2016-02-01 00:00:00
abstract：:I propose that North American investigators who depend largely on individual external grants would benefit from the creation of regional facilities designed to support studies of aging in transgenic models. In general, academic institutions cannot achieve the most cost effectiveness because their facilities are not de...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/s0197-4580(99)00007-x
更新日期：1999-03-01 00:00:00
abstract：:In the present study, we aim at investigating whether education modulates dynamical properties of time-varying whole-brain network connectivity (the chronnectome) in frontotemporal dementia (FTD) at a given level of symptom severity. Dynamic connectivity parameters were evaluated in 128 patients with FTD using indepen...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2020.04.021
更新日期：2020-09-01 00:00:00
abstract：:The apolipoprotein E (ApoE) ε4 allele has consistently been established as an Alzheimer's disease (AD) risk factor, but its pathological contribution to AD is obscure. Certain butyrylcholinesterase (BuChE) polymorphisms together with the ApoE ε4 allele synergistically increase the risk of AD. In addition, AD risk fact...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2009.07.015
更新日期：2011-07-01 00:00:00
abstract：:The excitatory amino acids (EAAs) L-aspartate and L-glutamate constitute the major neurotransmitters in the mammalian brain. This study established the influence of aging and oxidative stress on the release and uptake of EAAs. The high affinity uptake of D-[3H]aspartate in synaptosomal fractions of the neostriatum, hi...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/0197-4580(94)90150-3
更新日期：1994-01-01 00:00:00
abstract：:Low homocysteine levels and B vitamin treatment are reported to protect against declining cognitive health. Both B vitamins and homocysteine are involved in the production of S-adenosylmethionine, a universal methyl donor essential for the process of DNA methylation. We investigated the effect of a damaging coding var...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2019.02.001
更新日期：2019-06-01 00:00:00
abstract：:APOE affects the risk of Alzheimer's disease (AD) and course of several other neurologic diseases. Experimental studies suggest that APOE influences synaptogenesis. We measured the concentration of two presynaptic proteins, synaptophysin and syntaxin 1, and also postsynaptic density-95 (PSD95), in superior temporal co...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2005.04.008
更新日期：2006-06-01 00:00:00
abstract：:Elevated expression of human hyperphosphorylated tau is associated with neuronal loss and white matter (WM) pathology in Alzheimer's disease (AD) and related neurodegenerative disorders. Using in vivo diffusion tensor magnetic resonance imaging (DT-MRI) at 11.1 Tesla we measured age-related alterations in WM diffusion...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2013.12.009
更新日期：2014-06-01 00:00:00
abstract：:Elevated serum and cerebrospinal fluid concentrations of S100β, a protein predominantly found in glia, are associated with intracranial injury and neurodegeneration, although concentrations are also influenced by several other factors. The longitudinal association between serum S100β concentrations and brain health in...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2018.05.029
更新日期：2018-09-01 00:00:00
abstract：:APOE is the major known genetic risk factor for late-onset Alzheimer's disease. Though relationships between APOE-encoded apolipoprotein E and β-amyloid are increasingly well described, mounting evidence supports wide-ranging effects of APOE on the brain. Specifically, APOE appears to affect brain network activity and...
journal_title：Neurobiology of aging
pub_type： 杂志文章,评审
doi：10.1016/j.neurobiolaging.2012.10.011
更新日期：2013-04-01 00:00:00
abstract：:Mutations in Leucine-rich repeat kinase 2 (LRRK2) are recognized as the most frequent genetic factors contributing to Parkinson's disease (PD). The aim of our study was to explore LRRK2 variants in PD patients within the mainland Han Chinese population. The whole coding regions of LRRK2 from 296 PD patients were seque...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2018.06.036
更新日期：2018-12-01 00:00:00
abstract：:We recently reported evidence for an association between the individual variation in normal human episodic memory and a common variant of the KIBRA gene, KIBRA rs17070145 (T-allele). Since memory impairment is a cardinal clinical feature of Alzheimer's disease (AD), we investigated the possibility of an association be...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2008.07.014
更新日期：2010-06-01 00:00:00
abstract：:Frontotemporal dementias with parkinsonism linked to chromosome 17 (FTDP-17) are hereditary tauopathies affecting at least 50 known kindred worldwide. Most kindred present with severe behavioral or psychiatric manifestations progressing to dementia, while some kindred first manifest a parkinsonian-plus syndrome. Nine ...
journal_title：Neurobiology of aging
pub_type： 杂志文章,评审
doi：10.1016/s0197-4580(00)00202-5
更新日期：2001-01-01 00:00:00
abstract：:Dogs exhibit both neuroanatomical and cognitive changes as a function of age that parallel those seen in aging humans. This study describes in vivo changes in neuroanatomical and cerebrovascular characteristics of the canine brain as a function of age in a group of dogs ranging from 4 to 15 years old. Dynamic contrast...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/s0197-4580(98)00081-5
更新日期：1998-09-01 00:00:00
abstract：:Raising insulin acutely in the periphery and in brain improves verbal memory. Intranasal insulin administration, which raises insulin acutely in the CNS without raising plasma insulin levels, provides an opportunity to determine whether these effects are mediated by central insulin or peripheral processes. Based on pr...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2005.03.016
更新日期：2006-03-01 00:00:00
abstract：:The very long (VL) poly-T variant at rs10524523 ("523") of the TOMM40 gene may hasten the onset of late-onset Alzheimer's disease (LOAD) and induce more profound cognitive impairment compared with the short (S) poly-T variant. We examined the influence of TOMM40 "523" polymorphism on spatial navigation and its brain s...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2015.03.004
更新日期：2015-06-01 00:00:00
abstract：:Behavioral profiles of young (3-6 months) and aged (24-27 months) rats were compared in three respects: (1) short-term memory, (2) exploration and (3) locomotor activity. Compared to young rats, aged rats were impaired in the 8-arm radial maze acquisition, but not in the delayed reinforced alternation acquisition. The...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/0197-4580(87)90033-9
更新日期：1987-09-01 00:00:00
abstract：:Calcium-binding proteins play potentially important roles in neurogenesis and neuroprotective mechanism(s). Some evidence exists that brain calbindin-D28K (CALB) is regulated by androgens. In the present study, calretinin (CALRET) and CALB patterns were determined by Western analysis in the medial basal hypothalamus (...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/s0197-4580(98)00060-8
更新日期：1998-05-01 00:00:00
abstract：:We have previously shown beneficial effects of a Ginkgo biloba extract (EGb761-IPSEN) in accelerating functional recovery from hemiplegia induced by unilateral motor cortex ablation. Here, we report the behavioral and histological effects of various dose regimes of EGb761. In young rats (3 months), 10 mg/kg/day for 7 ...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/s0197-4580(97)00007-9
更新日期：1997-03-01 00:00:00
abstract：:We obtained serum samples and measured alpha 1-antichymotrypsin (ACT) levels in 36 pairs of consecutive probable Alzheimer's disease (AD) patients and age- and sex-matched, cognitively intact control subjects. Serum ACT was measured by radial immunodiffusion. Unique to this study, we found that ACT levels rose signifi...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/0197-4580(94)90141-4
更新日期：1994-01-01 00:00:00
abstract：:Amyloid beta (Aβ) peptide, the main component of senile plaques in patients with Alzheimer's disease (AD), is derived from proteolytic cleavage of amyloid precursor protein (APP) by β- and γ-secretases. Alpha-cleavage of APP by α-secretase has a potential to preclude the generation of Aβ because it occurs within the A...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2013.07.014
更新日期：2014-01-01 00:00:00
abstract：:In terminal Alzheimer's disease (AD) the frequency of plaques was found to be reduced in single cases. To test this finding in a larger sample, and in order to determine whether the number of plaques labeled with different markers and the distribution of neurofibrillary tangles are correlated positively to each other ...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/s0197-4580(98)00090-6
更新日期：1998-11-01 00:00:00
abstract：:The neuropeptide neurokinin 3 (NK3) and its receptor modulate cholinergic activity of the basal forebrain (BF) and are implicated in learning and memory. In Alzheimer's disease, the rs2765 single-nucleotide polymorphism (SNP) of the NK3 receptor-coding gene TACR3 was correlated with the right hippocampus volume. Here,...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2014.12.031
更新日期：2015-06-01 00:00:00
abstract：:The H1 MAPT haplotype in the 17q21 chromosomal region has been associated with several neurodegenerative diseases. Some reports have suggested that there is an association between genetic variants within the H1 haplotype with Parkinson's disease (PD), progressive supranuclear palsy (PSP) and corticobasal degeneration ...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2009.09.011
更新日期：2011-03-01 00:00:00
