Abstract:
:Neuronal accumulation of oligomeric amyloid-beta (Alphabeta) is considered the proximal cause of neuronal demise in Alzheimer disease (AD) patients. Blood-borne macrophages might reduce Abeta stress to neurons by immigration into the brain and phagocytosis of Alphabeta. We tested migration and export across a blood-brain barrier model, and phagocytosis and clearance of Alphabeta by AD and normal subjects' macrophages. Both AD and normal macrophages were inhibited in Alphabeta export across the blood-brain barrier due to adherence of Abeta-engorged macrophages to the endothelial layer. In comparison to normal subjects' macrophages, AD macrophages ingested and cleared less Alphabeta, and underwent apoptosis upon exposure to soluble, protofibrillar, or fibrillar Alphabeta. Confocal microscopy of stained AD brain sections revealed oligomeric Abeta in neurons and apoptotic macrophages, which surrounded and infiltrated congophilic microvessels, and fibrillar Abeta in plaques and microvessel walls. After incubation with AD brain sections, normal subjects' monocytes intruded into neurons and uploaded oligomeric Abeta. In conclusion, in patients with AD, macrophages appear to shuttle Abeta from neurons to vessels where their apoptosis may release fibrillar Abeta, contributing to cerebral amyloid angiopathy.
journal_name
Acta Neuropatholjournal_title
Acta neuropathologicaauthors
Zaghi J,Goldenson B,Inayathullah M,Lossinsky AS,Masoumi A,Avagyan H,Mahanian M,Bernas M,Weinand M,Rosenthal MJ,Espinosa-Jeffrey A,de Vellis J,Teplow DB,Fiala Mdoi
10.1007/s00401-008-0481-0subject
Has Abstractpub_date
2009-02-01 00:00:00pages
111-24issue
2eissn
0001-6322issn
1432-0533journal_volume
117pub_type
杂志文章abstract::Immunofluorescence and immunogold labelling were used to localise the 43-kDa dystrophin-associated glycoprotein (43DAG) of the dystrophin-glycoprotein complex in control and Duchenne muscular dystrophy (DMD) biopsies. In control muscle 43DAG was localised by immunofluorescence to the periphery of the fibre and, by imm...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00313603
更新日期:1994-01-01 00:00:00
abstract::The finding of novel fibroblastic onion bulb-like structures in peripheral nerves is reported for the first time in avian riboflavin deficiency. Day old broiler meat chickens were fed a riboflavin deficient diet (1.8 mg/kg) and were killed on postnatal days 6, 11, 16, 21 and 31, whereas control chickens were fed a con...
journal_title:Acta neuropathologica
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doi:10.1007/s00401-007-0215-8
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journal_title:Acta neuropathologica
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journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-010-0659-0
更新日期:2010-04-01 00:00:00
abstract::Abuse of the club drugs Methamphetamine (Meth) and Ecstasy (MDMA) is an international problem. The seriousness of this problem is the result of what appears to be programmed cell death (PCD) occurring within the brain following their use. This follow up study focused on determining which cell types, neurons and/or gli...
journal_title:Acta neuropathologica
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doi:10.1007/s00401-007-0259-9
更新日期:2007-09-01 00:00:00
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journal_title:Acta neuropathologica
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doi:10.1007/s00401-002-0575-z
更新日期:2002-10-01 00:00:00
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journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00296547
更新日期:1991-01-01 00:00:00
abstract::The E200K mutation is the most frequent prion protein gene (PRNP) mutation detected worldwide that is associated with Creutzfeldt-Jakob disease (CJD) and thought to have overlapping features with sporadic CJD, yet detailed neuropathological studies have not been reported. In addition to the prion protein, deposition o...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-010-0713-y
更新日期:2011-01-01 00:00:00
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journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00688573
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abstract::Most cases of frontotemporal lobar degeneration (FTLD) are characterized by abnormal intracellular accumulation of either tau or TDP-43 protein. However, in ~10% of cases, composed of a heterogenous collection of uncommon disorders, the molecular basis remains to be uncertain. We recently discovered that the pathologi...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-010-0764-0
更新日期:2011-02-01 00:00:00
abstract::Twenty necropsy cases of the association of fetal encephalitis with porencephaly, hydranencephaly or polymicrogyria were reviewed including 5 from the authors' material. The latter include a basket brain, a porencephalic necrosis of recent date and a polymicrogyria in the formative state. The supratentorial lesions ar...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00685011
更新日期:1978-08-07 00:00:00
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journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00690463
更新日期:1984-01-01 00:00:00
abstract::Pleomorphic xanthoastrocytoma (PXA), a tumor most often presenting superficially over the cerebral hemisphere of young subjects, has certain morphological similarities to fibrous histiocytoma (or fibrous xanthoma) of the meninges and brain, namely the occurrence of lipid-laden neoplastic cells and, frequently, a dense...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00691285
更新日期:1989-01-01 00:00:00
abstract::Healthy nodes of Ranvier are crucial for action potential propagation along myelinated axons, both in the central and in the peripheral nervous system. Surprisingly, the node of Ranvier has often been neglected when describing CNS disorders, with most pathologies classified simply as being due to neuronal defects in t...
journal_title:Acta neuropathologica
pub_type: 杂志文章,评审
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journal_title:Acta neuropathologica
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doi:10.1007/s00401-004-0917-0
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journal_title:Acta neuropathologica
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journal_title:Acta neuropathologica
pub_type: 杂志文章
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abstract::Data on the dural invasiveness of pituitary adenomas have been correlated to the expression of matrix metalloproteinases (e.g. MMP-9). Serine proteases have not yet been investigated in human pituitary adenomas. In this study, paraffin-embedded material from 84 human pituitary adenomas (acromegaly n=18, Cushing's dise...
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abstract::Aging and neurodegeneration are often accompanied by a functionally impaired ubiquitin-proteasome system (UPS). In tauopathies and polyglutamine diseases, a mutant form of ubiquitin B (UBB(+1)) accumulates in disease-specific aggregates. UBB(+1) mRNA is generated at low levels in vivo during transcription from the ubi...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-012-1003-7
更新日期:2012-08-01 00:00:00
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journal_title:Acta neuropathologica
pub_type: 杂志文章
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更新日期:2016-04-01 00:00:00
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journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-008-0382-2
更新日期:2008-10-01 00:00:00
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journal_title:Acta neuropathologica
pub_type: 杂志文章
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更新日期:2019-07-01 00:00:00
abstract::An unusual tumor of the pituitary gland is reported. The most characteristic finding of the present tumor was the presence of numerous "colloid" and mucoid secretions. The cells were stellate in shape and there were intra- or intercellular lumina which were lined by many microvilli and occasional cilia. There were als...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00687617
更新日期:1984-01-01 00:00:00
abstract::An in vivo method for positively staining dead neurons was developed and compared with an in vitro staining method using acid fuchsin. Neurons previously killed by intracerebral injections of kainic acid were selectively stained by trypan blue within 15 min of its injection in vivo into the central nervous system of r...
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pub_type: 杂志文章
doi:10.1007/BF00687254
更新日期:1989-01-01 00:00:00