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  • Herpes virus encephalitis  (2)
  • Polyneuropathy  (2)
  • Castleman disease  (1)
  • 1
    ISSN: 1432-0533
    Keywords: Key words     AIDS ; Cytomegalovirus encephalitis ; Herpes virus encephalitis ; Cerebral lymphoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract      Unlike cytomegalovirus (CMV) ventriculoencephalitis, herpes simplex virus type 1 necrotizing encephalitis has only rarely been observed in AIDS patients. A 40-year-old bisexual man was followed for an HIV1 infection from 1987 onwards. In June 1993 he was referred for sudden confusion, left hemiparesia and fever. The blood contained less than 10 CD4 lymphocytes/mm3. The patient remained comatose and febrile, and died 4 weeks later. In coronal sections of the brain there was necrosis of the internal parts of the left temporal lobe, necrosis of certain areas of the ventricular walls and a small tumor at the top of the right frontal lobe, which proved to be a polymorphic high-grade lymphoma. CMV ventriculoencephalitis lesions were prominent in the ventricular walls of the occipital lobes and there was a strong nuclear signal for CMV using in situ hybridization. Herpes simplex virus type 1 was shown in the nuclei and cytoplasm of certain neurons and astrocytes in the borders of the necrotized temporal lobe areas by immunohistochemistry, in situ hybridization and electron microscopy, whereas in situ hybridization and immunohistochemistry for CMV were negative in such areas. Necrotizing type 1 encephalitis must not be overlooked in immunodeficient patients.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0533
    Keywords: Diabetes mellitus ; Guillain-Barré syndrome ; Myelin ; Polyneuropathy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Inflammatory demyelinating polyradiculoneuropathies exhibit well-known ultrastructural lesions of the peripheral nerve, both in acute cases, i.e., Guillain-Barré syndrome, and in relapsing, subacute and chronic cases. We present a case of relapsing inflammatory demyelinating polyradiculoneuropathy in a diabetic patient with a biopsy exhibiting these lesions, as well as a widening of the outermost myelin lamellae in some fibers. Such associated lesions are classic in experimental inflammatory demyelinating polyradiculoneuropathies, but have not been reported in human pathology.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0533
    Keywords: Castleman disease ; Monoclonal gammopathy ; Myelin ; Peripheral neuropathy ; POEMS syndrome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Mechanisms of peripheral neuropathies in polyneuropathy, organomegaly, endocrinopathy, M-protein and skin changes (POEMS) syndrome are poorly understood. A peripheral nerve biopsy was performed in 22 patients. Of these 9 had histological features of Castleman's disease on lymph node biopsies, and 19 had a monoclonal lambda light chain in their serum. Certain nerve fragments were paraffin embedded, others were frozen and studied by direct immuno-fluorescence, and others were fixed for ultrastructural examination. Paraffin-embedded fragments did not show any amyloid deposits, and at direct immunofluorescence there was no immunoglobulin fixation. At ultrastructural examination, features of uncompacted myelin lamellae (UML) were present in 19 patients, and their frequency varied from 1% to 16% of myelinated fibres. Up to now UML have been reported only in 7 patients with POEMS syndrome in the literature. UML have also been noticed in a few cases of inflammatory demyelinating polyradiculoneuritis and inherited tendency to pressure palsy.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-0533
    Keywords: AIDS ; Cytomegalovirus encephalitis ; Herpes virus encephalitis ; Cerebral lymphoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Unlike cytomegalovirus (CMV) ventriculoencephalitis, herpes simplex virus type 1 necrotizing encephalitis has only rarely been observed in AIDS patients. A 40-year-old bisexual man was followed for an HIV1 infection from 1987 onwards. In June 1993 he was referred for sudden confusion, left hemiparesia and fever. The blood contained less than 10 CD4 lymphocytes/mm3. The patient remained comatose and febrile, and died 4 weeks later. In coronal sections of the brain there was necrosis of the internal parts of the left temporal lobe, necrosis of certain areas of the ventricular walls and a small tumor at the top of the right frontal lobe, which proved to be a polymorphic high-grade lymphoma. CMV ventriculoencephalitis lesions were prominent in the ventricular walls of the oecipital lobes and there was a strong nuclear signal for CMV using in situ hybridization. Herpes simplex virus type 1 was shown in the nuclei and cytoplasm of certain neurons and astrocytes in the borders of the necrotized temporal lobe areas by immunohistochemistry, in situ hybridization and electron microscopy, whereas in situ hybridization and immunohistochemistry for CMV were negative in such areas. Necrotizing type 1 encephalitis must not be overlooked in immunodeficient patients.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 79 (1989), S. 160-167 
    ISSN: 1432-0533
    Keywords: Dysglobulinemia ; Myelin ; Myelin-associated glycoprotein ; Polyneuropathy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Quantitative, immunopathological, light and electron microscopic studies of superficial peroneal nerve biopsies from 31 patients with IgM monoclonal gammopathy were carried out. Six patients had Waldenström's macroglobulinemia and 25 had IgM monoclonal gammopathy of undetermined significance. Serum samples from 28 of these patients were assayed for anti-myelin-associated glycoprotein (anti-MAG) activity. Anti-MAG activity was found in 25 of the samples. There was a relationship between the widening of some myelin lamellae observed on ultrastructural examination and the serum anti-MAG activity (23 cases). Immunopathological examination showed IgM binding to myelin sheaths in 17 cases.
    Type of Medium: Electronic Resource
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