Abstract：
:Four biopsies of the brain cortex of patients with Alzheimer's disease were used for ultrastructural studies. Three-dimensional reconstruction and morphometric studies of three classical plaques were carried out to determine the distribution of the astrocytes and their processes, and spatial relationships between astrocytes and plaque components. Morphologic and morphometric studies showed marked ultrastructural changes in the astrocytes located in the vicinity of the plaque. Proliferating processes of the two or three astrocytes nearest to the plaque become part of the plaque. Processes of hypertrophic astrocytes touch neighboring vessels, neurons, and amyloid deposits. The volume of the peripheral amyloid deposits in the classical plaques examined exceeds the volume of the amyloid star by about 26%. Amyloid of the classical plaque periphery appears as amyloid wisps. Most amyloid wisps are isolated between astrocytic processes proliferating and penetrating into the plaque. Proliferation and penetration of astrocytic processes into the plaque lead to fragmentation of amyloid deposits and their dispersion. Reduction in the size of amyloid wisps isolated between astrocytic processes toward the plaque periphery and changes in the morphology of amyloid fibers in this plaque region suggest that astrocytes participate in gradual degradation of at least part of the amyloid fibers.
journal_name
Neurobiol Agingjournal_title
Neurobiology of agingauthors
Wisniewski HM,Wegiel Jdoi
10.1016/0197-4580(91)90091-wsubject
Has Abstractpub_date
1991-09-01 00:00:00pages
593-600issue
5eissn
0197-4580issn
1558-1497pii
0197-4580(91)90091-Wjournal_volume
12pub_type
杂志文章abstract：:Age-related cognitive decline is likely promoted by accumulated brain injury due to chronic conditions of aging, including neurodegenerative and vascular disease. Because common neuronal mechanisms may mediate the adaptation to diverse cerebral insults, we hypothesized that susceptibility for age-related cognitive dec...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2011.09.033
更新日期：2012-05-01 00:00:00
abstract：:To investigate possible age-associated changes in human synaptic connectivity, superior-middle frontal cortex (Brodmann area 9) was evaluated with ultrastructural techniques. Short post mortem autopsy tissue was obtained from 37 cognitive normal individuals ranging in age from 20 to 89 years. A minimum of five subject...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/s0197-4580(01)00222-6
更新日期：2001-05-01 00:00:00
abstract：:Abberant lipid metabolism is implicated in Alzheimer's disease (AD) pathophysiology, but the connections between AD and lipid metabolic pathways are not fully understood. To investigate plasma lipids in AD, a multiplatform screen (n = 35 by liquid chromatography-mass spectrometry and n = 35 by nuclear magnetic resonan...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2013.08.001
更新日期：2014-02-01 00:00:00
abstract：:While aging is generally associated with episodic memory decline, not all older adults exhibit memory loss. Furthermore, emotional memories are not subject to the same extent of forgetting and appear preserved in aging. We conducted high-resolution fMRI during a task involving pattern separation of emotional informati...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2016.08.018
更新日期：2017-01-01 00:00:00
abstract：:Extracellular senile plaques (SPs) are hallmark brain lesions of sporadic Alzheimer's disease (AD) and the likely consequence of genetic mutations that cause familial AD by increasing production of amyloidogenic amyloid-beta (Abeta). Although Abeta vaccines and inhibitors of amyloidogenic secretases are potential AD t...
journal_title：Neurobiology of aging
pub_type： 杂志文章,评审
doi：10.1016/s0197-4580(02)00121-5
更新日期：2002-11-01 00:00:00
abstract：:Neuropeptide Y (NPY) has been implicated in the control of reproductive and cardiovascular function. We observed an age-related decrease in the number of males copulating to ejaculation and a moderate systolic hypertension in middle-aged (16- to 17-month-old) rats. NPY content was examined in microdissected brain nucl...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/0197-4580(94)90111-2
更新日期：1994-03-01 00:00:00
abstract：:Energy deficiency and dysfunction of the Na,K-ATPase are common consequences of many pathological insults. Glutamate through cyclic GMP and cyclic GMP-dependent protein kinase (PKG) has been shown to stimulate alpha(2/3)-Na,K-ATPase activity in the central nervous system. Thus, a slight impairment of this pathway may ...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2004.08.013
更新日期：2005-06-01 00:00:00
abstract：:Vascular risk factors have been implicated in the pathogenesis of vascular dementia and Alzheimer's disease. The identification of a novel vascular disease susceptibility locus at 9p21.3 has recently generated great interest. In the present study, we sought to determine whether a common genetic variant (tagged by rs13...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2009.07.003
更新日期：2011-07-01 00:00:00
abstract：:Etiologically heterogeneous subgroups of patients with Alzheimer's disease (AD) exist and need to be distinguished so as to better identify genetic causes of familial cases. Furthermore, the presence of AD neuropathology in Down syndrome (trisomy 21) subjects older than 35 years suggests that AD in some cases is cause...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/0197-4580(89)90087-0
更新日期：1989-09-01 00:00:00
abstract：:Biochemical, genetic, and epidemiological evidence indicates that inflammation is an essential part of the pathogenesis of Alzheimer's disease. Over the last decade, we and others have focused on the mechanism by which specific inflammatory molecules contribute to the Alzheimer pathogenic pathway. In particular, we ha...
journal_title：Neurobiology of aging
pub_type： 杂志文章,评审
doi：10.1016/s0197-4580(01)00308-6
更新日期：2001-11-01 00:00:00
abstract：:The Tachykinin Receptor 2 (TACR2) located at chromosome 10q21.3 belongs to a class of receptors that bind members of the tachykinin neurotransmitter family. The TACR2 binds neurokinin A, also known as substance K, and is expressed in distinct parts of the human brain. Functionally, the TACR2 has been implicated in str...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2009.03.007
更新日期：2011-03-01 00:00:00
abstract：:Zen meditation, a Buddhist practice centered on attentional and postural self-regulation, has been speculated to bring about beneficial long-term effects for the individual, ranging from stress reduction to improvement of cognitive function. In this study, we examined how the regular practice of meditation may affect ...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2007.06.008
更新日期：2007-10-01 00:00:00
abstract：:The associations of 4 proteins-AK4, ITPK1, HSPB2, and IGFBP5-with cognitive function in older adults were largely unexplained by known brain pathologies. We examined the extent to which individual protein associations with cognitive decline were attributable to microstructural changes in the brain. This study included...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2019.07.013
更新日期：2019-12-01 00:00:00
abstract：:Repetitive transcranial magnetic stimulation (rTMS), a noninvasive brain stimulation technique, has emerged as a promising treatment for mild cognitive impairment (MCI) and Alzheimer's disease (AD). Currently, however, the effectiveness of this therapy is unclear because of the low statistical power and heterogeneity ...
journal_title：Neurobiology of aging
pub_type： 杂志文章,meta分析
doi：10.1016/j.neurobiolaging.2019.08.020
更新日期：2020-02-01 00:00:00
abstract：:Recently, two large, and independent genome wide association studies of late-onset Alzheimer's disease (AD) established association with the same rs11136000 variation in the clusterin (CLU) gene. In addition, one variation, rs3851179, in the phosphatidylinositol binding clathrin assembly protein (PICALM) gene and one ...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2010.07.016
更新日期：2011-03-01 00:00:00
abstract：:Cerebral gray-matter volume (GMV) decreases in normal aging but the extent of the decrease may be experience-dependent. Bilingualism may be one protective factor and in this article we examine its potential protective effect on GMV in a region that shows strong age-related decreases-the left anterior temporal pole. Th...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2014.03.010
更新日期：2014-09-01 00:00:00
abstract：:We investigated whether (1) serum levels of 25-hydroxyvitamin D [25(OH)D] and single nucleotide polymorphisms (SNPs) in the group-specific component (GC) gene-regulating serum 25(OH)D levels are associated with cognition in older individuals; and (2) whether causal relationships exist between 25(OH)D and cognition dur...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2015.11.002
更新日期：2016-03-01 00:00:00
abstract：:Aged rats were chronically administered acetyl-L-carnitine (AC) for 10 months. During this period they were tested on learning and sensorimotor tasks and were then subsequently tested electrophysiologically to assess induction and decay rates of long-term synaptic enhancement (LTE) in the hippocampus. Four groups were...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/0197-4580(93)90030-f
更新日期：1993-01-01 00:00:00
abstract：:Acetyl-1-carnitine (AC) was administered via drinking water for six months to one group (OLD-AC) of male F-344 rats beginning at 16 months of age, while another group (OLD-CON) of rats was given water only during that period. The rats were maintained on this treatment throughout behavioral testing, which began at 22 m...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/0197-4580(90)90110-l
更新日期：1990-09-01 00:00:00
abstract：:In simple systems, lifespan can be extended by various methods including dietary restriction, mutations in the insulin/insulin-like growth factor (IGF) pathway or mitochondria among other processes. It is widely held that the mechanisms that extend lifespan may be adapted for diminishing age-associated pathologies. We...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2013.03.014
更新日期：2013-09-01 00:00:00
abstract：:The impact of many inflammatory diseases is influenced by age-related changes in the activation of resident and circulating myeloid cells. In the eye, a major sight-threatening consequence of age-related macular degeneration is the development of severe choroidal neovascularization (CNV). To identify the molecular pat...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2015.12.019
更新日期：2016-04-01 00:00:00
abstract：:Mitochondrial dysfunction is likely a significant contributing factor to Alzheimer disease pathogenesis, and both amyloid peptide (Aβ) and pathological forms of tau may contribute to this impairment. Cleavage of tau at Asp421 occurs early in Alzheimer disease, and Asp421-cleaved tau likely negatively impacts neuronal ...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2011.02.007
更新日期：2012-03-01 00:00:00
abstract：:Increased susceptibility to energy imbalance and anorexia in old age are risk factors for malnutrition during aging, but the underlying mechanisms are not well understood. Here, we explored changes in taste-guided hedonic value ("liking") and motivation to obtain ("wanting") palatable foods as potential mediators of a...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2010.09.006
更新日期：2012-01-01 00:00:00
abstract：:Oxidative stress is believed to be a significant cause of Parkinson's disease (PD). DJ-1 is thought to be an oxidative sensor that protects cells from oxidative insult. It was reported that the level of total DJ-1 protein was significantly reduced in the substantia nigra of sporadic PD patients, suggesting that abnorm...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2013.09.027
更新日期：2014-03-01 00:00:00
abstract：:Delivery of drugs to specific sites in the CNS represents an essential therapeutic challenge. Extradural administration of opiates successfully delivers drugs to the CNS. The levodopa-carbidopa combination achieved some degree of site-specific delivery by pharmacological methods. Antibiotics have been administered thr...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/0197-4580(89)90156-5
更新日期：1989-09-01 00:00:00
abstract：:The rare variant A673T in the amyloid-β precursor protein (APP) gene has been shown to reduce the risk of cognitive impairment. We genotyped the variant in 8721 Asian individuals comprising 552 with Alzheimer's disease and vascular dementia, 790 with Parkinson's disease, and 7379 controls. The A673T variant was absent...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2013.04.012
更新日期：2013-10-01 00:00:00
abstract：:Although the neurodevelopment of empathy from childhood to adolescence has been documented, no study has yet examined it across a life span aging perspective. Sixty-five healthy participants from 3 age groups (young, middle-aged, old) underwent functional magnetic resonance imaging while presented with visual stimuli ...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2013.10.080
更新日期：2014-04-01 00:00:00
abstract：:While cytoskeletal abnormalities are prominent in the neurons of patients with Alzheimer's disease, the possibility remains that these changes are secondary to changes in the neuronal environment. The success of NGF in the therapy of Alzheimer's disease may be dependent on its ability to promote neuronal survival rath...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/0197-4580(89)90134-6
更新日期：1989-09-01 00:00:00
abstract：:The available published guidelines for the housing of rodents are reviewed, and assessments are made with regard to whether the data on which these guidelines are based appear to be sound. Ambient air temperature, relative humidity, lighting levels and photoperiods, sound levels, cage sizes, and ventilation rates are ...
journal_title：Neurobiology of aging
pub_type： 杂志文章,评审
doi：10.1016/0197-4580(91)90116-2
更新日期：1991-11-01 00:00:00
abstract：:Biallelic loss-of-function mutations in TYROBP and TREM2 cause a rare disease that resembles early-onset frontotemporal dementia with bone lesions called polycystic lipomembranous osteodysplasia with sclerosing leukoencephalopathy (PLOSL). Some PLOSL-causing variants in TREM2 have also been associated with Alzheimer's...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2017.12.008
更新日期：2018-04-01 00:00:00
