Abstract:
:Severe hypoxic-ischemic cerebral damage was produced in 8-day-old rats following permanent bilateral carotid artery occlusion and 15 min of ischemia. Cellular damage consisted of early necrosis and appearance of cells with apoptotic-like morphology (karyorrhectic cells) and cells with granular chromatin degeneration in the cerebral cortex, hippocampus, thalamus, stratum and amygdala. Expression of Bcl-2, Bax and Bcl-x was examined in control and hypoxic-ischemic rats using immunohistochemistry and Western blotting. Members of the Bcl-2 family were expressed in the vast majority of, if not all, neurons in control pups. Bcl-2, Bax and Bcl-x immunoreactivity decreased in necrotic cells, but about 60% of cells with apoptotic-like morphology and cells with granular chromatin degeneration were stained with antibodies to Bcl-2, Bax or Bcl-x. Although the total number of stained cells decreased with time, recruitment of cells with apoptotic morphology and cells with granular chromatin degeneration was still found up to 48 h. Western blots showed a band at about p28 and p21, respectively for Bcl-2 and Bax in control and hypoxic-ischemic pups at 6, 12 and 24 h. Two bands at about p37 and p30, representing Bcl-xL and Bcl-xS, respectively, were found in samples stained with antibodies to Bcl-x. No gross changes in the intensity of these bands were observed in ischemic pups at 6, 12 and 24 h, except for a slight decrease in Bcl-2 at 24 h, and a slight and inconstant increase of the putative Bcl-xS at 12 h. These results suggest that Bcl-2, Bax, Bcl-xL and Bcl-xS do not play a leading role in the fate of damaged nerve cells following a severe hypoxic-ischemic insult of the developing brain.
journal_name
Acta Neuropatholjournal_title
Acta neuropathologicaauthors
Ferrer I,Pozas E,López E,Ballabriga Jdoi
10.1007/s004010050753subject
Has Abstractpub_date
1997-12-01 00:00:00pages
583-9issue
6eissn
0001-6322issn
1432-0533journal_volume
94pub_type
杂志文章abstract::Amyotrophic lateral sclerosis (ALS) and adult onset X-linked recessive bulbospinal muscular atrophy (SPMA), constituting the category of adult onset form of motor neuron disease, were analyzed on motor nerve roots. The results of morphometric analysis on ventral spinal roots (VSR) of all spinal segments from ALS and S...
journal_title:Acta neuropathologica
pub_type: 杂志文章
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journal_title:Acta neuropathologica
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abstract::Laquinimod (LAQ) is a new oral immunomodulatory compound that reduces relapse rate, brain atrophy and disability progression in multiple sclerosis (MS). LAQ has well-documented effects on inflammation in the periphery, but little is known about its direct activity within the central nervous system (CNS). To elucidate ...
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journal_title:Acta neuropathologica
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abstract::We have previously shown that in the hippocampal formation of patients with acquired immunodeficiency syndrome (AIDS) there is neuronal atrophy, without cell loss. Because reductions in neuronal size are suggestive of associated neuritic alterations, we decided to study the dendritic trees of the main neuronal populat...
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更新日期:1983-01-01 00:00:00
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journal_title:Acta neuropathologica
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abstract::A woman of 22 years developed heavy pain in the neck and arms with weakness and paresthesia. She died two days after a myelography which was normal. At autopsy an enterogenous extra- and intra-medullary cyst of the cervical cord (C3, C4) was found. In addition the cervical cord apart from the cyst and the uppermost th...
journal_title:Acta neuropathologica
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更新日期:1977-11-28 00:00:00
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journal_title:Acta neuropathologica
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更新日期:1977-05-16 00:00:00
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journal_title:Acta neuropathologica
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更新日期:1985-01-01 00:00:00
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journal_title:Acta neuropathologica
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更新日期:1988-01-01 00:00:00
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pub_type: 杂志文章,已发布勘误
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更新日期:1994-01-01 00:00:00
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abstract::Neuronal and glial cytoplasmic inclusions (NCIs and GCIs), which contain alpha-synuclein as a major component, are characteristic cytopathological features of multiple system atrophy (MSA). We report MSA of 19 years' duration in a 73-year-old woman. Her initial symptom was parkinsonism, with dementia appearing about 8...
journal_title:Acta neuropathologica
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更新日期:2001-03-01 00:00:00
abstract::Fifteen cases of Down syndrome between age 25-59 years were examined neuropathologically. A variety of histological methods were used to identify plaques and neurofibrillary tangles (NFT). All cases had some plaques or NFT, but their density was generally not high before the age of 40 years. Plaques and NFT tended to ...
journal_title:Acta neuropathologica
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更新日期:1989-01-01 00:00:00
abstract::Neuroaxonal spheroids became evident microscopically after the autopsy of a 45-year-old woman with pigmentation of the globus pallidus suggesting Hallervorden-Spatz disease. In our opinion the fine floccular pigment seen electron-microscopically in many of the axonal spheroids is melanin, an end product of catecholami...
journal_title:Acta neuropathologica
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更新日期:1983-01-01 00:00:00
abstract::A macrosomic male infant with multiple malformations survived for 4 days. His external dysplasias comprised macrocephalus, cheilopalatoschisis, auricular anomalies, and unilateral hexadactyl; his internal dysplasias included cysts of kidneys and pancreas, and a patent foramen ovale. The child had frequent generalized ...
journal_title:Acta neuropathologica
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更新日期:1980-01-01 00:00:00
abstract::A total of 66 skin biopsies from persons with Alzheimer's disease (AD) or Down's syndrome (DS) and from persons without AD were used in this study. The age range was from 7 to 89 years. Positive immunoreactivity of skin biopsies to monoclonal antibody 4G8, which is reactive to amino acid residue 17-24 of synthetic amy...
journal_title:Acta neuropathologica
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abstract::Mislocalization and abnormal deposition of TDP-43 into the cytoplasm (TDP-43 proteinopathy) is a hallmark in neurons of amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration (FTLD). However, the pathogenic mechanism of the diseases linked to TDP-43 is largely unknown. We hypothesized that the failu...
journal_title:Acta neuropathologica
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更新日期:2020-11-01 00:00:00
abstract::Low-grade neuroepithelial tumors (LGNTs) are diverse CNS tumors presenting in children and young adults, often with a history of epilepsy. While the genetic profiles of common LGNTs, such as the pilocytic astrocytoma and 'adult-type' diffuse gliomas, are largely established, those of uncommon LGNTs remain to be define...
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更新日期:2016-06-01 00:00:00