Abstract:
:Currently used criteria for the diagnosis of probable Alzheimer's disease requires the presence of cognitive deficit in addition to loss of episodic memory. The recent developments in drug treatments for Alzheimer's disease have highlighted the importance of early diagnosis and the need to characterise the cognitive profile of the earliest stages of the disease. We set out to examine the pattern of decline in terms of individual cognitive domains in non-demented subjects with clinically isolated progressive amnesia which we have termed questionable Alzheimer's disease. Twelve subjects who fulfill criteria for a clinical diagnosis of possible Alzheimer's disease by NINCDS-ADRDA criteria were compared to 20 age-matched controls in a longitudinal study. All subjects had MMSE scores of 24 or greater at entry to study. Individual profiles were measured by impairment in the cognitive domains of episodic memory, attention, semantic memory, visuospatial function and auditory verbal short-term (working) memory. Even after subjects were given this intensive neuropsychological battery, 8 of 12 subjects had episodic memory deficits only. Within 12 months just 3 patients were only amnesic and the other patients with pure amnesia at year 1 developed either semantic or attentional deficits. Impairment in both these cognitive domains preceded impairment in visuospatial function and auditory-verbal short-term memory. Our findings are consistent with the pattern of cognitive impairment in Alzheimer's disease increasing in accordance with neuropathological correlates of cognitive function with amnesia linked to the initial medial temporal pathology before the pattern of spread affects critical neural substrates for attention and semantic memory. Tests of selective attention and semantic memory appear to be the most sensitive markers of decline beyond the amnestic phase of early Alzheimer's disease.
journal_name
Dement Geriatr Cogn Disordjournal_title
Dementia and geriatric cognitive disordersauthors
Perry RJ,Hodges JRdoi
10.1159/000017264keywords:
subject
Has Abstractpub_date
2000-11-01 00:00:00pages
342-9issue
6eissn
1420-8008issn
1421-9824pii
17264journal_volume
11pub_type
临床试验,杂志文章abstract::This intent-to-treat (ITT) analysis was performed to provide a realistic image of the efficacy that could be expected after 26 weeks treatment with a 120-mg dose (40 mg t.i.d.) of EGb 761 (EGb). The data were collected during a 52-week, double-blind, placebo-controlled, fixed dose, parallel-group, multicenter study. P...
journal_title:Dementia and geriatric cognitive disorders
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1159/000017242
更新日期:2000-07-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000356483
更新日期:2014-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
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doi:10.1159/000469658
更新日期:2017-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000375365
更新日期:2015-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 临床试验,杂志文章
doi:10.1159/000017200
更新日期:1999-11-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000452255
更新日期:2017-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000119594
更新日期:2008-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000080965
更新日期:2005-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章,meta分析
doi:10.1159/000447324
更新日期:2016-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000074080
更新日期:2004-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000051251
更新日期:2001-03-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1159/000095108
更新日期:2006-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000480077
更新日期:2017-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000051285
更新日期:2001-11-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000089515
更新日期:2006-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000107099
更新日期:2007-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000366411
更新日期:2015-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000017037
更新日期:1998-05-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章,多中心研究
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更新日期:2004-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000070678
更新日期:2003-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000106598
更新日期:1997-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000140804
更新日期:2008-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000101453
更新日期:2007-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000087440
更新日期:2005-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000216841
更新日期:2009-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000119730
更新日期:2008-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000356726
更新日期:2014-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000327358
更新日期:2011-01-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000017123
更新日期:1999-05-01 00:00:00
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journal_title:Dementia and geriatric cognitive disorders
pub_type: 杂志文章
doi:10.1159/000066023
更新日期:2002-01-01 00:00:00