Abstract：
:A variety of studies have shown an effect of estrogen on dopamine function and suggest that estrogen may modulate central dopaminergic activity. Positron emission tomography (PET) and the dopamine metabolism tracer, [18F]6-fluoro-L-m-tyrosine (FMT) were used to evaluate dopaminergic function in the frontal cortex and striatum in six aged, but pre-menopausal, female monkeys before and after ovariectomy (OVX). Dynamic PET brain uptake data and metabolite-corrected blood input functions were fit to a three-compartment model for FMT uptake. Prior to OVX, all animals showed preferential accumulation of the tracer bilaterally in the striatum and less but measurable activity in the frontal cortex. Paired comparisons showed that there were no significant differences in FMT uptake (K(i)) in either brain region before and after OVX. In addition, FMT uptake did not differ from a group of young adult female monkeys at either time point. These findings may represent a compensatory up-regulation of aromatic L- amino acid decarboxylase (AADC) activity.
journal_name
Neurobiol Agingjournal_title
Neurobiology of agingauthors
Eberling JL,Roberts JA,Taylor SE,VanBrocklin HF,O'Neil JP,Nordahl TEdoi
10.1016/s0197-4580(01)00323-2subject
Has Abstractpub_date
2002-05-01 00:00:00pages
479-83issue
3eissn
0197-4580issn
1558-1497pii
S0197458001003232journal_volume
23pub_type
杂志文章abstract：:Apolipoprotein E (APOE) ε4 is a major risk factor for Alzheimer's disease (AD) and dementia, but not all ε4 carriers develop dementia. We sought to identify factors that may play a role in modifying the risk of dementia due to ε4. A cognitively intact cohort (n = 932, age ≥ 75) was followed for 9 years to detect incid...
journal_title：Neurobiology of aging
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更新日期：2013-01-01 00:00:00
abstract：:Macrophages or activated microglia in the subretinal space are considered a hallmark of some retinal pathologies. We investigated the effects of age, pigmentation and CX(3)CR1 deficiency on the accumulation of macrophages/activated microglia in the outer retina of young and old Cx(3)cr1(gfp/gfp) (CX(3)CR1-deficient) o...
journal_title：Neurobiology of aging
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journal_title：Neurobiology of aging
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更新日期：2020-05-01 00:00:00
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journal_title：Neurobiology of aging
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更新日期：2002-05-01 00:00:00
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journal_title：Neurobiology of aging
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journal_title：Neurobiology of aging
pub_type： 杂志文章
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journal_title：Neurobiology of aging
pub_type： 杂志文章
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journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2014.07.038
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journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2013.06.003
更新日期：2013-12-01 00:00:00
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journal_title：Neurobiology of aging
pub_type： 杂志文章
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更新日期：2012-09-01 00:00:00
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journal_title：Neurobiology of aging
pub_type： 杂志文章
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更新日期：2012-01-01 00:00:00
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journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2015.09.013
更新日期：2016-01-01 00:00:00
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journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/0197-4580(91)90054-n
更新日期：1991-03-01 00:00:00
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journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/0197-4580(87)90022-4
更新日期：1987-03-01 00:00:00
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journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2003.10.007
更新日期：2004-09-01 00:00:00
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journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2012.02.016
更新日期：2012-12-01 00:00:00
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journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2014.01.146
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pub_type： 杂志文章
doi：10.1016/0197-4580(93)90029-b
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journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2014.07.002
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journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2010.07.002
更新日期：2012-06-01 00:00:00
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journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2017.05.021
更新日期：2017-09-01 00:00:00
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journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/0197-4580(80)90010-x
更新日期：1980-01-01 00:00:00
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journal_title：Neurobiology of aging
pub_type： 杂志文章
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journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2006.12.016
更新日期：2008-06-01 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
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journal_title：Neurobiology of aging
pub_type： 杂志文章
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journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2010.05.011
更新日期：2011-12-01 00:00:00
abstract：:Aging is accompanied by increased neuroinflammation, synaptic dysfunction, and cognitive deficits both in rodents and humans, yet the onset and progression of these deficits throughout the life span remain unknown. These aging-related deficits affect the quality of life and present challenges to our aging society. Her...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2017.02.001
更新日期：2017-05-01 00:00:00
abstract：:We sought to describe change in cardiorespiratory (CR) fitness over 2 years in those with early-stage Alzheimer's disease (AD) and nondemented aging and assess the relationship of CR fitness with cognitive decline, brain atrophy, and dementia progression. Individuals with early-stage AD (n = 37) and without dementia (...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2011.03.016
更新日期：2012-08-01 00:00:00
abstract：:The G4C2 hexanucleotide repeat expansion, located in the first intron of the C9ORF72 gene, represents a major genetic hallmark of amyotrophic lateral sclerosis and frontotemporal lobar degeneration. Several hypotheses have been proposed on how the transcribed repeat RNA leads to the development of amyotrophic lateral ...
journal_title：Neurobiology of aging
pub_type： 杂志文章
doi：10.1016/j.neurobiolaging.2014.09.012
更新日期：2015-02-01 00:00:00
