Abstract:
:Methylmercury (MeHg) poisoning (20 mg/kg body weight) in embryonic mice resulted in significant reductions of mitotic indices in the neuroepithelial germinal cells of the telencephalon at the ventricular surface 4 to 12 h following intoxication. After 24 h, no significant difference in the mitotic indices was observed as compared to controls. However, after 48 h there was an increase in mitotic indices of MeHg group as compared to controls. Analysis of the mitotic figures revealed features suggestive of early-phase mitotic arrest in MeHg-exposed animals. Radioautographic studies suggest a disturbance in the interkinetic nuclear migration of proliferating ventricular cells in the MeHg group. Acute degenerative changes in scattered ventricular cells characterized by edema and spongy changes of cytoplasm associated with dissolution of ribosomes, clearing of the cytoplasmic matrix and loss of organelles including microtubules were observed by electron microscopy. Loss of microtubules was also evident within mitotic figures in MeHg-poisoned animals. It is suggested that reduction and arrest of mitotic activity and disturbances in the interkinetic nuclear migration of neuroepithelial germinal cells are related to cytotoxic effects of MeHg on ventricular cells, including effects on microtubules. These findings suggest in that MeHg severely affects proliferating neuroepithelial germinal cells during the acute phases of MeHg poisoning, and that these changes may eventually affect the architectonic makeup of the cortical plate as the brain matures.
journal_name
Acta Neuropatholjournal_title
Acta neuropathologicaauthors
Choi BHdoi
10.1007/BF00293454subject
Has Abstractpub_date
1991-01-01 00:00:00pages
359-65issue
4eissn
0001-6322issn
1432-0533journal_volume
81pub_type
杂志文章abstract::Paediatric high grade glioma (pHGG) (World Health Organisation astrocytoma grades III and IV) remains poor prognosis tumours, with a median survival of only 15 months following diagnosis. Current investigation of anti-angiogenic strategies has focused on adult glioblastoma multiforme (GBM) with phase III trials target...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-012-0952-1
更新日期:2012-07-01 00:00:00
abstract::To investigate the relationship between cerebral amyloid angiopathy and subcortical (lobar) hemorrhage, we examined the severity of amyloid deposition in the leptomeningeal, cortical and subcortical arteries in 28 autopsied elderly patients with cerebral amyloid angiopathy with subcortical hemorrhage, deep cerebral he...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00228574
更新日期:1993-01-01 00:00:00
abstract::To identify antigenic differences between gliomas and normal brain, we have immunohistochemically studied the expression of lymphocyte adhesion molecules (ICAM-1, ICAM-2, ICAM-3, VCAM-1, E-selectin and CD58), epidermal growth factor receptor (EGFR) and extracellular matrix proteins (collagen IV, fibronectin, laminin, ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s004010050696
更新日期:1997-09-01 00:00:00
abstract::Numerous families exhibiting both frontotemporal dementia (FTD) and amyotrophic lateral sclerosis (ALS) have been described, and although many of these have been shown to harbour a repeat expansion in C9ORF72, several C9ORF72-negative FTD-ALS families remain. We performed neuropathological and genetic analysis of a la...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-013-1078-9
更新日期:2013-04-01 00:00:00
abstract::In the present study we assessed the neuroprotective effects of the pan-caspase inhibitor z-VAD.fmk [N-benzyloxycarbony-valine-alanine-aspartate-(OMe)-fluoromethylketone], and the caspase-3 inhibitor Ac-DEVD.CHO (acetyl-aspartate-chloromethylketone) in the double-lesion rat model of striatonigral degeneration (SND), t...
journal_title:Acta neuropathologica
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更新日期:2005-02-01 00:00:00
abstract::A series of 50 human primary intracranial tumors were cultivated in vitro in an attempt to establish cell lines with the trypsinization technique. During the in vitro adaptation period, cultures were maintained at high cell density to avoid rapid over-growth by connective tissue. Five lines were established from 5 tum...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00690383
更新日期:1977-07-15 00:00:00
abstract::A model of hypothermic circulatory arrest with recovery has been developed in the newborn dog. Eleven puppies were anesthetized with halothane, paralyzed and artificially ventilated with 70% nitrous oxide -30% oxygen to paO2 > 60 mm Hg, paCO2 = 33-42 mm Hg and pHa = 7.35-7.42. Animals were surface cooled to 20 degrees...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00227767
更新日期:1993-01-01 00:00:00
abstract::In a study designed to identify the neuropathological features typical of chronic inflammatory demyelinating polyneuropathy (CIDP), we reviewed the sural nerve biopsy findings in 105 patients with this disorder. The patients' mean age at biopsy was 49 years. In 65% of patients the disease had a progressive and in 35% ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s004010050941
更新日期:1998-12-01 00:00:00
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journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00688632
更新日期:1985-01-01 00:00:00
abstract::The fine structures of two pineal parenchymal neoplasms has been described. The tumors contained a predominance of small, poorly differentiated cells with prominent nuclei and scanty cytoplasm. These cells were similar to those found in medulloblastomas, primitive cerebral neuroectodermal tumors, and fetal cerebellum ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00699239
更新日期:1981-01-01 00:00:00
abstract::The selective toxicity of silica dust for macrophages has been used to assess the role of these cells in experimental allergic neuritis (EAN). Inbred Lewis rats were inoculated with bovine dorsal roots in Freund's complete adjuvant (day 0). In two experiments, animals received 200 mg of silica dust in 1 cm3 of saline ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00687614
更新日期:1984-01-01 00:00:00
abstract::Glycerol (an atoxic alcohol) and phenol (a toxic monohydroxybenzene) are currently used as neurolytic blocking agents to relieve pain or spasticity. In the present study we compared the endoneurial response of anhydrous glycerol and 7% phenol-aqua after intraneural injection into rat sciatic nerve, using electron micr...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s004010000349
更新日期:2001-07-01 00:00:00
abstract::Inflammatory processes have been implicated in the formation of senile plaques in the cerebral cortex of patients with dementia of the Alzheimer type (DAT), since several inflammation-induced proteins are present within these plaques. The relation between inflammatory components and other amyloid beta protein (A beta)...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s004010050474
更新日期:1996-01-01 00:00:00
abstract::Using a photochemical method silver was demonstrated in the brains of 1-, 14-, and 45-day-old rats which had been exposed to silver on gestational days 18 and 19. In the brain tissue of new-born rats, silver was found in the lysosomes of neurons and astroglia. Minor changes in the anatomic distribution of silver were ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00691995
更新日期:1983-01-01 00:00:00
abstract::A neuropathological study is presented of a case showing the association of tuberous sclerosis of the brain and dysplasia of the corpus callosum as well as omphalocele and malrotated colon. No signs of tuberous sclerosis were found in the internal organs. From a review of the literature this appears to be the fourth c...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF01273269
更新日期:1978-04-26 00:00:00
abstract::Evidence of misfolded wild-type superoxide dismutase 1 (SOD1) has been detected in spinal cords of sporadic ALS (sALS) patients, suggesting an etiological relationship to SOD1-associated familial ALS (fALS). Given that there are currently a number of promising therapies under development that target SOD1, it is of cri...
journal_title:Acta neuropathologica
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doi:10.1007/s00401-016-1623-4
更新日期:2016-12-01 00:00:00
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journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-003-0814-y
更新日期:2004-04-01 00:00:00
abstract::Marinesco-Sjögren syndrome (MSS) features cerebellar ataxia, mental retardation, cataracts, and progressive vacuolar myopathy with peculiar myonuclear alterations. Most MSS patients carry homozygous or compound heterozygous SIL1 mutations. SIL1 is a nucleotide exchange factor for the endoplasmic reticulum resident cha...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-013-1224-4
更新日期:2014-05-01 00:00:00
abstract::The current classification of human sporadic prion diseases recognizes six major phenotypic subtypes with distinctive clinicopathological features, which largely correlate at the molecular level with the genotype at the polymorphic codon 129 (methionine, M, or valine, V) in the prion protein gene and with the size of ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-012-1002-8
更新日期:2012-10-01 00:00:00
abstract::The pathological changes in the nucleus basalis of Meynert (nbM) in 10 autopsied cases with Pick's disease were studied in comparison with 15 age-matched controls. Both the number and density of nerve cells and the degree of fibrillary gliosis were examined at the anterior, intermediate, and posterior divisions of the...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00687402
更新日期:1989-01-01 00:00:00
abstract::The number and nucleolar volume of nerve cells within the nucleus basalis of Meynert, locus caeruleus, substantia nigra and dorsal raphe were examined in five patients with Huntington's chorea. No significant changes in nerve cell number were noted in any area in any patient and, although nucleolar volume was reduced ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00687718
更新日期:1989-01-01 00:00:00
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journal_title:Acta neuropathologica
pub_type: 杂志文章,评审
doi:10.1007/s00401-011-0930-z
更新日期:2012-02-01 00:00:00
abstract::It is conventionally accepted that during the early stages of Wallerian degeneration of myelinated peripheral nerve fibres Schmidt-Lanterman incisures represent the sites at which the myelin sheath, together with enclosed axoplasm, is segmented into myelin ovoids. This mechanism is considered by some authors to be fac...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:
更新日期:1979-11-01 00:00:00
abstract::Ectopic neurons have been detected in the hippocampus of postnatal hooded rats aged 5-24 days. These rats were exposed to methylazoxymethanol acetate (MAMac) during foetal development by injecting the mother rats with this neurotoxin. At birth, the hippocampus of rats exposed to MAMac showed a normal cytoarchitecture;...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00688698
更新日期:1977-10-10 00:00:00
abstract::In a large series of 116 cortical resections for treatment of medically intractable epilepsy, 10 glial hamartomas and 11 neuronoglial malformative lesions were found. Glial hamartomas were astrocytic in 3 cases, oligodendrocytic in 6 and mixed oligoastrocytic in 1. Neuronoglial lesions corresponded to "focal cortical ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00296190
更新日期:1994-01-01 00:00:00
abstract::Aggregation and toxicity of the amyloid β-peptide (Aβ) are considered as critical events in the initiation and progression of Alzheimer's disease (AD). Recent evidence indicated that soluble oligomeric Aβ assemblies exert pronounced toxicity, rather than larger fibrillar aggregates that deposit in the forms of extrace...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-016-1546-0
更新日期:2016-04-01 00:00:00
abstract::A patient with mixed gonadal dysgenesis showed glove and stocking-type sensory impairment and slowing of motor and sensory nerve conduction. Sural nerve biopsy revealed minifascicular formation with decreased density of myelinated fibers. As far as we are aware, this is the first report of polyneuropathy with minifasc...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s004010051085
更新日期:1999-09-01 00:00:00
abstract::Medulloblastoma (MB) represents approximately 4% of adult brain tumours, and as such is a poorly studied disease. Although many adult MB are treated using paediatric MB protocols, the reported outcomes are inferior to those observed in children. It remains unclear whether biologic differences underlie these clinical o...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-010-0780-0
更新日期:2011-02-01 00:00:00
abstract::In the nerve tissue with proliferating macroglia cells were observed a lowered oxygen consumption, an increased aerobic glycolysis and alanine formation and a higher alanine aminotransferase and glutamate dehydrogenase activity than in the control tissue in the homogenates and in the cell sap fraction. The substrate s...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00684665
更新日期:1976-03-15 00:00:00
abstract::Respiratory chain dysfunction leads to reactive oxygen species (ROS) generation with following oxidative stress and cellular damage. A histochemical and immunohistochemical study was performed on muscle biopsies from 17 patients with mitochondrial disease [chronic progressive external ophthalmoplegia (CPEO), mitochond...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s004010100455
更新日期:2002-03-01 00:00:00