Abstract:
:The immunoreactivity to the free radical-related enzymes, nitric oxide synthase (NOS) and superoxide dismutase (SOD), was examined in brain tissue in progressive supranuclear palsy (PSP). To determine the relationship between the immunoexpression of these enzymes and tau-positive, argyrophilic cytoplasmic inclusions, which are constantly present in PSP brains, double-label immunohistochemistry was applied. We demonstrated for the first time that strong inducible NOS-like immunoreactivity (iNOS-ir) was detected in tau-positive astrocytes that bore tufts of abnormal fibers (TAF), but not in oligodendrocytes containing argyrophilic/tau-positive coiled bodies nor in microglia. No brain NOS-ir was detected in neurons with neurofibrillary tangles. MnSOD-ir was also detected in tau-positive astrocytes and oligodendrocytes. Nitrotyrosine-ir of variable intensity was observed in astrocytes, oligodendrocytes and neurons. Our results indicate: (1) that TAF-bearing astrocytes may be a major source of excessive NO in PSP brains; (2) that after the induction of iNOS by unknown stimulating factors, TAF-bearing astrocytes produce an excessive amount of NO that exceeds the detoxification capability of SOD; and (3) that peroxynitrite and excessive NO, both cytotoxic, may be present in astrocytes, oligodendrocytes and neurons. Although the precise relationship between NO production and neuronal cell death in PSP remained uncertain, based on the specificity of TAF for PSP brains, our results indicated a possible mechanism of NO-mediated cytotoxicity that may contribute to the neuronal and glial cell damage followed by abnormal tau accumulation in this disease.
journal_name
Acta Neuropatholjournal_title
Acta neuropathologicaauthors
Komori T,Shibata N,Kobayashi M,Sasaki S,Iwata Mdoi
10.1007/s004010050808subject
Has Abstractpub_date
1998-04-01 00:00:00pages
338-44issue
4eissn
0001-6322issn
1432-0533journal_volume
95pub_type
杂志文章abstract::The fine structure of an intracerebellar "fibroma" has been examined. The tumor consists of irregularly-shaped cells connected by well developed junctional complexes. Unusual, fenestrated capillaries with extremely narrow and irregular lumens are frequent. Collagen fibers are not common but the wide extracellular spac...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00696567
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abstract::Primary extradural ependymomas are rare neoplasms usually of the myxopapillary type. Reports on malignant primary extradural ependymal tumors are exceptionally rare. We here report on a 3-year-old boy with Schinzel-Giedion syndrome (SGS), who presented with lumbar spina bifida occulta and a progressive extraspinal les...
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journal_title:Acta neuropathologica
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journal_title:Acta neuropathologica
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doi:10.1007/BF00299415
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journal_title:Acta neuropathologica
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abstract::Defective interfering influenza virus particles lessened the yield of infective virus recovered from brain after intracerebral challange of 3-week old mice, but failed to affect the appearance of disease or lethality. In 7-week old mice, the presence of defective interfering influenza virus particles reduced both leth...
journal_title:Acta neuropathologica
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doi:10.1007/BF00684666
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journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00688007
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journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00293318
更新日期:1994-01-01 00:00:00
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pub_type: 杂志文章
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journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00686619
更新日期:1987-01-01 00:00:00
abstract::The unfolded protein response (UPR) is a stress response of the endoplasmic reticulum (ER) to a disturbance in protein folding. The so-called ER stress sensors PERK, IRE1 and ATF6 play a central role in the initiation and regulation of the UPR. The accumulation of misfolded and aggregated proteins is a common characte...
journal_title:Acta neuropathologica
pub_type: 杂志文章,评审
doi:10.1007/s00401-015-1462-8
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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::Striped skunks were inoculated intracerebrally with the scrapie agent (suspension of brain from a naturally infected Suffolk sheep) or intramuscularly with street rabies virus (suspension of salivary glands from naturally infected skunks). Those given the scrapie agent developed clinical signs of weakness, posterior a...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00687775
更新日期:1988-01-01 00:00:00
abstract::In this report, we describe the clinical, topographical and immunohistochemical characteristics of neurofilament (NF) inclusion formation induced by the intracisternal inoculation of young adult New Zealand white rabbits at 28-day intervals with 100 micrograms AlCl3 over the course of 267 days. The ability to recover ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00294460
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abstract::We have previously characterized three human leucine-rich repeats and immunoglobulin-like domains (LRIG) genes and proteins, named LRIG1-3 and proposed that they may act as suppressors of tumor growth. The LRIG1 transmembrane protein antagonizes the activity of epidermal growth factor receptor family receptor tyrosine...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-006-0032-5
更新日期:2006-03-01 00:00:00
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journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s00401-014-1268-0
更新日期:2014-05-01 00:00:00
abstract::A quantitative technique involving serial sectioning and semiautomatic morphometric analysis was used to assess the severity of the reduction in size of the major brain structures in cerebral hemispheres of children congenitally infected with HIV-1. Cerebral hemispheres from 12 children (18-48 months of age) who died ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s004010050594
更新日期:1997-02-01 00:00:00
abstract::Pathways for transfer of horseradish peroxidase (HRP) across the cerebral microvasculature were studied in Mongolian gerbils after inducing either unilateral carotid-artery ligation or intracarotid air embolism. Electron microscopy on samples from both ipsilateral and contralateral brain hemispheres showed the reactio...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00717032
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journal_title:Acta neuropathologica
pub_type: 杂志文章
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journal_title:Acta neuropathologica
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journal_title:Acta neuropathologica
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doi:10.1007/BF00310033
更新日期:1992-01-01 00:00:00
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journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00389504
更新日期:1994-01-01 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
doi:10.1007/BF00296784
更新日期:1992-01-01 00:00:00
abstract::To clarify the role of prostaglandins in peripheral nerve demyelination, we examined the expression of cyclooxygenase-2 (COX-2) using selected nerve specimens from patients with chronic inflammatory demyelinating polyneuropathy. COX-2 protein was up-regulated in macrophages causing active demyelination. In situ hybrid...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s004010000279
更新日期:2001-02-01 00:00:00
abstract::Electron microscopy and computerized morphometric techniques were employed to examine pericyte ultrastructure and to assess quantitatively their relationship to endothelial cells in five cases of cerebellar capillary hemangioblastoma. A total of 97 cross-sectioned capillary profiles were studied. Pericyte coverage of ...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00687810
更新日期:1985-01-01 00:00:00
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journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/s004010050575
更新日期:1997-01-01 00:00:00
abstract::A 50-year-old carpenter died in Western Pennsylvania of rabies on January 4, 1979. He had been hospitalized in an intensive care unit for 28 days. The diagnosis was made postmortem from light and electron microscopic examination of central nervous system tissue. Immunofluorescence studies confirmed the diagnosis later...
journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00687393
更新日期:1980-01-01 00:00:00
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journal_title:Acta neuropathologica
pub_type: 杂志文章
doi:10.1007/BF00684929
更新日期:1983-01-01 00:00:00