Abstract:
BACKGROUND:Recent work on Alzheimer's disease (AD) diagnosis focuses on neuroimaging modalities; however, these methods are expensive, invasive, and not available to all patients. Ocular imaging of biomarkers, such as drusen in the peripheral retina, could provide an alternative method to diagnose AD. OBJECTIVE:This study compares macular and peripheral drusen load in control and AD eyes. METHODS:Postmortem eye tissues were obtained from donors with a neuropathological diagnosis of AD. Retina from normal donors were processed and categorized into younger (<55 years) and older (>55 years) groups. After fixation and dissection, 3-6 mm punches of RPE/choroid were taken in macular and peripheral (temporal, superior, and inferior) retinal regions. Oil red O positive drusen were counted and grouped into two size categories: small (<63 μm) and intermediate (63-125 μm). RESULTS:There was a significant increase in the total number of macular and peripheral hard drusen in older, compared to younger, normal eyes (p<0.05). Intermediate hard drusen were more commonly found in the temporal region of AD eyes compared to older normal eyes, even after controlling for age (p<0.05). Among the brain and eye tissues from AD donors, there was a significant relationship between cerebral amyloid angiopathy (CAA) severity and number of temporal intermediate hard drusen (r=0.78, p<0.05). CONCLUSION:Imaging temporal drusen in the eye may have benefit for diagnosing and monitoring progression of AD. Our results on CAA severity and temporal intermediate drusen in the AD eye are novel. Future studies are needed to further understand the interactions among CAA and drusen formation.
journal_name
Curr Alzheimer Resjournal_title
Current Alzheimer researchauthors
Ukalovic K,Cao S,Lee S,Tang Q,Beg MF,Sarunic MV,Hsiung GR,Mackenzie IR,Hirsch-Reinshagen V,Cui JZ,Matsubara JAdoi
10.2174/1567205015666180123122637subject
Has Abstractpub_date
2018-01-01 00:00:00pages
743-750issue
8eissn
1567-2050issn
1875-5828pii
CAR-EPUB-88136journal_volume
15pub_type
杂志文章abstract::Serum levels of β-amyloid (Aβ) peptides may represent an early biomarker in the diagnosis of Alzheimer's disease (AD). In the present study, we investigated the temporal kinetic changes in the levels of serum Aβ 1-42 and 40 in an amyloid precursor protein (APP)/presenilin (PS)1 double transgenic mouse model of AD. Ser...
journal_title:Current Alzheimer research
pub_type: 杂志文章
doi:10.2174/15672050113106660159
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journal_title:Current Alzheimer research
pub_type: 杂志文章,评审
doi:10.2174/156720507780362164
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journal_title:Current Alzheimer research
pub_type: 杂志文章,评审
doi:10.2174/1567205014666170203095802
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journal_title:Current Alzheimer research
pub_type: 杂志文章,评审
doi:10.2174/1567205012666150921103304
更新日期:2016-01-01 00:00:00
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journal_title:Current Alzheimer research
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doi:10.2174/1567205053585909
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abstract::Soluble amyloid beta (Abeta) oligomers might trigger early cognitive impairment in Alzheimer's Disease (AD) through the impairment of proper neuronal network function. We have recently shown that the short sequence Abeta(25-35) affects the spontaneous activity in hippocampal slices, when was added to the bath, at high...
journal_title:Current Alzheimer research
pub_type: 杂志文章
doi:10.2174/156720510791383859
更新日期:2010-08-01 00:00:00
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journal_title:Current Alzheimer research
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journal_title:Current Alzheimer research
pub_type: 杂志文章
doi:10.2174/1567205011666140130150108
更新日期:2014-02-01 00:00:00
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journal_title:Current Alzheimer research
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更新日期:2016-01-01 00:00:00
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journal_title:Current Alzheimer research
pub_type: 杂志文章,评审
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journal_title:Current Alzheimer research
pub_type: 杂志文章,评审
doi:10.2174/156720506779025215
更新日期:2006-12-01 00:00:00
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journal_title:Current Alzheimer research
pub_type: 杂志文章
doi:10.2174/156720512802455359
更新日期:2012-09-01 00:00:00
abstract::Alzheimer's disease (AD) is the most common type of dementia in the US and much of the world with rates increasing exponentially from age 65. Increases in life expectancy in the last century have resulted in a large number of people living to old ages and will result in a quadrupling of AD cases by the middle of the c...
journal_title:Current Alzheimer research
pub_type: 历史文章,杂志文章,评审
doi:10.2174/156720506779025233
更新日期:2006-12-01 00:00:00
abstract::From a clinical as well as a neuropathological point of view Alzheimer's disease (AD) has been the focus of intense research for more than three decades. Most studies to identify morphometric correlates with the declining cognitive function in normal aging and AD have employed semi-quantitative methods to assess neuro...
journal_title:Current Alzheimer research
pub_type: 杂志文章,评审
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更新日期:2005-10-01 00:00:00
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journal_title:Current Alzheimer research
pub_type: 杂志文章,评审
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更新日期:2017-01-01 00:00:00
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journal_title:Current Alzheimer research
pub_type: 杂志文章,评审
doi:10.2174/156720507783018217
更新日期:2007-12-01 00:00:00
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journal_title:Current Alzheimer research
pub_type: 杂志文章
doi:10.2174/1567205016666190228124630
更新日期:2019-01-01 00:00:00
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journal_title:Current Alzheimer research
pub_type: 杂志文章
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更新日期:2018-01-01 00:00:00
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journal_title:Current Alzheimer research
pub_type: 杂志文章
doi:
更新日期:2013-01-01 00:00:00
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journal_title:Current Alzheimer research
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doi:10.2174/1567205013666161013091934
更新日期:2017-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:2015-01-01 00:00:00
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journal_title:Current Alzheimer research
pub_type: 杂志文章,评审
doi:10.2174/156720507780362074
更新日期:2007-04-01 00:00:00
abstract::The definite diagnosis of Alzheimer's disease (AD) is based on the detection of beta amyloid (Aβ) plaques and neurofibrillary tangles (NFTs) - which are the pathological hallmarks of the disease- in the postmortem brains. Although regional Cerebral Blood Flow (rCBF) and Cerebral Glucose Metabolism (CGM) abnormalities ...
journal_title:Current Alzheimer research
pub_type: 杂志文章
doi:10.2174/156720510792231757
更新日期:2010-09-01 00:00:00
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journal_title:Current Alzheimer research
pub_type: 杂志文章,评审
doi:10.2174/1567205043480528
更新日期:2004-02-01 00:00:00
abstract::Gamma-secretase is a multi-protein complex that proteolyzes the transmembrane region of the amyloid beta-peptide (Abeta) precursor (APP), producing the Abeta peptide implicated in the pathogenesis of Alzheimer's disease (AD). This protease has been a top target for AD, and various inhibitors have been identified, incl...
journal_title:Current Alzheimer research
pub_type: 杂志文章,评审
doi:10.2174/156720508783954767
更新日期:2008-04-01 00:00:00
abstract::Deterioration of the cortical cholinergic system is a leading neurochemical feature of Alzheimer's Disease (AD). This review summarizes evidence that the homomeric α7- nicotinic acetylcholine receptor (nAChR) plays a crucial role in the pathogenesis of this disease, which is characterized by amyloid-β (Aβ) accumulatio...
journal_title:Current Alzheimer research
pub_type: 杂志文章,评审
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更新日期:2013-07-01 00:00:00
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journal_title:Current Alzheimer research
pub_type: 杂志文章
doi:
更新日期:2013-06-01 00:00:00
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journal_title:Current Alzheimer research
pub_type: 杂志文章
doi:10.2174/1567205011666141001120903
更新日期:2014-01-01 00:00:00
abstract::To search for potential mechanism that might alter synaptic transmission following Abeta increase we have examined the presynaptic component of transmitter release. As parameters of synaptic transmission that might underlie presynaptic mechanisms, we have used paired-pulse facilitation (PPF), post-tetanic potentiation...
journal_title:Current Alzheimer research
pub_type: 杂志文章
doi:10.2174/1567205053585936
更新日期:2005-04-01 00:00:00