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  • 1
    ISSN: 1432-1920
    Schlagwort(e): Key words Brain stem ; Olivary nuclei ; Ischaemia
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract We describe a patient with the “top of the basilar” syndrome, in whom MRI documented the appearance and regression of olivary hypertrophy.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1432-1920
    Schlagwort(e): Brain stem ; Olivary nuclei ; Ischaemia
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract We describe a patient with the “top of the basilar” syndrome, in whom MRI documented the appearance and regression of olivary hypertrophy.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 3
    ISSN: 1432-0533
    Schlagwort(e): Phosphorylated high molecular weight neurofilament ; Motor neuron ; Amyotrophic lateral sclerosis (ALS) ; Werdnig-Hoffmann's disease ; X-linked recessive bulbospinal neuronopathy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Lower motor neurons of the spinal cord of patients with amyotrophic lateral sclerosis (ALS), Werdnig-Hoffmann's disease (WH), X-linked recessive bulbospinal neuronopathy (X-BSNP) and multiple system atrophy (MSA), all of which were known to involve the lower motor neurons, were immunohistochemically examined by using a monoclonal antibody (Ta-51) specific to phosphorylated epitopes of high molecular weight subunits of neurofilaments. The incidence of Ta-51-positive neurons was significantly increased in ALS, WH and MSA, but not in X-BSNP. Ta-51-positive neurons showed a wide variety of morphological appearances, including neurons with normal appearance, central chromatolysis, simple atrophy and neurons containing massive neurofilamentous accumulation. In aged-control cases, similar Ta-51-positive neurons were observed, although to a much lesser extent. In ALS, spheroids and globules, which were strongly positive for Ta-51, were also significantly increased. Ta-51-positive motor neurons, spheroids and globules appeared in proportional to the number of remaining large motor neurons in ALS.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    ISSN: 1432-0533
    Schlagwort(e): Crow-Fukase syndrome ; Segmental demyelination ; Excessive myelin outfold ; Focal T cell infiltrates
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Pathological changes of the peripheral nervous system in one autopsied case of Crow-Fukase syndrome (POEMS syndrome) was systemically examined. Distally accentuated myelinated axon loss was observed in the peripheral nerve trunks, ventral and dorsal spinal roots, but was not observed in the fasciculus gracilis. Segmental demyelination and remyelination associated with focal excessive myelin outfolds were the most characteristic features, the distribution of which was more prominent in the proximal nerve trunks and the spinal nerve roots. Endoneurial edema was present, and focal perivascular T lymphocyte accumulation was occasionally observed in the spinal nerve roots and proximal nerve trunks. Neurons in the sympathetic ganglia, dorsal root ganglia and ventral horns were well preserved.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 5
    ISSN: 1432-0533
    Schlagwort(e): Key words: Corticospinal tract ; Myelinated fibers ; Axon-collaterals ; Aging
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract A quantitative analysis was made of the myelinated fibers in the lateral corticospinal tract (LCST) at the levels of the 6th cervical, 7th thoracic and 4th lumbar spinal segments in 20 patients between 19 and 90 years old, and who died of non-neurological diseases. The diameter frequency histograms of myelinated fibers of LCST showed a bimodal pattern with a sharp peak of the small myelinated fibers and broad slope of the large myelinated fibers. The ratio of small fiber to large fiber densities was significantly higher in the 6th cervical (P 〈 0.05) and 4th lumbar segments (P 〈 0.01) than in the 7th thoracic segments. The density of small myelinated fibers was significantly lowered with advancing age (P 〈 0.05 ∼ 0.001), while that of large myelinated fibers was not significantly decreased in the aged patients, although it showed a slight age-dependent declining tendency. Age-dependent decline of small fiber density was more prominent in the cervical and lumbar segments. Retraction of the axon-collaterals from large-diameter myelinated fibers, which are abundant in the cervical and lumbar segments, may contribute to the age-related diminution of the small myelinated fibers in the LCST.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 6
    ISSN: 1432-0533
    Schlagwort(e): Key words p75NTR ; Nerve regeneration ; Spinal cord ; Dorsal root ganglia ; Sympathetic ganglia
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Expression of low-affinity neurotrophin receptor (p75NTR) was immunohistochemically examined in the peripheral nerve trunks, dorsal root ganglia, sympathetic nerve ganglia and spinal cords in various human neurological diseases manifesting peripheral neuropathies. p75NTR was expressed in the nerves with axonal degeneration, and was also prominent in the nerves with newly regenerating axons. In contrast, axonal pathology tended to reduce the expression of p75NTR in the neuronal perikarya of the dorsal root genglion and sympathetic nerve ganglion neurons. In the ventral and lateral horn cells, the p75NTR immunoreactivity was not detected in the normal and diseased nerves except for amyloid polyneuropathy. These p75NTR expressions in the diseased human peripheral nervous tissues would be regulated by an underlying pathology-related process, and could play a role in peripheral nerve repair.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 7
    ISSN: 1432-0533
    Schlagwort(e): Key words Advanced glycation end products ; Alzheimer’s disease ; Astrocytes ; Microglia
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract    In the previous study [Takeda et al. (1996) Neurosci Lett 221: 17–21], we reported that the advanced glycation end products (AGEs) in the external space of neuronal perikarya (extraneuroperikaryal AGE deposits) were significantly abundant in the Alzheimer’s brain. In this study, we investigated the spatial relationship of the extraneuroperikaryal AGE (carbocymethyllysine and pentosidine) deposits in astrocytes and microglial cells in the Alzheimer’s disease brain using double immunolabelling for AGEs and astrocyte or microglial cell markers. Most of the extraneuroperikaryal AGE deposits were co-localized with glial fibrillary acidic protein-positive astrocytes. AGE deposit-bearing astrocytes also contained Gomori-positive granules. Furthermore, some of the extraneuroperikaryal AGE deposits were co-localized with microglial cells. These extraneuroperikaryal AGEs may activate astrocyte and microglia, and play a role in pathogenesis of Alzheimer’s disease.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 8
    Digitale Medien
    Digitale Medien
    Springer
    Acta neuropathologica 77 (1989), S. 591-598 
    ISSN: 1432-0533
    Schlagwort(e): Nerve growth factor receptor ; S-100β protein ; Neurofibroma ; Schwannoma ; Von Recklinghausen disease
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary In situ expression of nerve growth factor (NGF) receptors in human dermal and plexiform neurofibroma, schwannoma and traumatic neuroma was examined by an immunohistochemical method using a monoclonal anti-human NGF receptor antibody. Immunoreactivity for the NGF receptor was observed on the principal cells of both neurofibroma and schwannoma. Immunostaining by the anti-S-100β protein antibody in adjacent sections suggested that the vast majority of NGF receptor-positive cells were also positive for S-100β protein. In traumatic neuroma, staining for the NGF receptor was more intense in the perineurium than in the endoneurial cells.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 9
    Digitale Medien
    Digitale Medien
    Springer
    Acta neuropathologica 99 (2000), S. 585-588 
    ISSN: 1432-0533
    Schlagwort(e): Key words TNF-α ; Polymyositis ; Dermatomyositis ; In situ hybridization ; Muscle fiber degeneration
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract We evaluated the expression of tumor necrosis factor-α (TNF-α) mRNA in muscle biopsy specimens from patients with polymyositis (PM) and dermatomyositis (DM) to clarify its role in the pathogenesis of PM and DM. We performed non-radioactive in situ hybridization studies for TNF-α combined with immunohistochemistry for cell type-specific markers on muscles from ten PM and five DM patients. TNF-α-positive infiltrating cells present in the endomysium and perimysium were found in all PM and DM muscles. The frequency of TNF-α-positive cells against total infiltrating cells was similar among PM and DM (27.1 ± 7.4% in PM and 28.5 ± 13.6% in DM). However, TNF-α/CD8-positive lymphocytes and TNF-α-positive macrophages invading the non-necrotic muscle fiber were observed only in PM but not in DM. TNF-α was more highly expressed in PM and DM than was previously thought, and it was suggested that TNF-α plays a role in muscle fiber degeneration in PM.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 10
    ISSN: 1432-0533
    Schlagwort(e): High molecular weight neurofilament ; Phosphorylation ; Peripheral nervous system ; Amyotrophic lateral sclerosis ; Multiple system atrophy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Using monoclonal antibody (Ta-51) that specifically binds phosphorylated high molecular weight neurofilament (pNFH) proteins, we investigated the occurrence of perikaryal pNFH in the spinal ventral horn motoneurons, intermediolateral column (ILC) neurons, sympathetic ganglion neurons and dorsal root ganglion (DRG) neurons obtained from patients with amyotrophic lateral sclerosis (ALS) and multiple system atrophy (MSA) and from control cases. In the controls, a system-dependent variation in perikaryal Ta-51 immunoreactivity was observed. Very few ventral horn cells and ILC neurons were stained with Ta-51, while large population of DRG neurons and sympathetic neurons were Ta-51 positive. The incidence of perikaryal immunoreactivity in the ventral horn cells was significantly increased in ALS and MSA. Some ILC neurons in ALS were Ta-51 positive and their incidence was significantly higher than that of the controls. These data suggest that both ILC neurons and ventral horn cells are affected with respect to pNFH metabolism in ALS and MSA. No significant difference was, however, detected in the Ta-51 immunoreactivity of both DRG and sympathetic ganglion neurons in ALS and MSA as compared with the controls.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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