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  • 1
    ISSN: 1432-0533
    Keywords: Diabetes mellitus ; Myelin ; Peripheral nerve ; Polyradiculoneuropathy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A diabetic woman underwent an incision of the right big toe for an abscess and developed a typical Guillain-Barré syndrome 48 h later. A biopsy of a peripheral nerve, performed 10 days later, showed modifications usually seen in diabetic patients, as well as the characteristic ultrastructural modifications of the Guillain-Barré syndrome (GBS). Moreover, 22% of myelinated fibers exhibited vesicular disruption of the myelin sheaths. This lesion is rarely encountered on the biopsies of peripheral nerve in GBS and concerns only a few myelinated fibers. Such a prominence of myelinic vesicular disruption and its occurrence in a diabetic patient are discussed.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0533
    Keywords: Axon ; Myelin ; Infantile polyneuropathy ; Peripheral nerve ; Schwann cell
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Four cases of early infantile polyneuropathy with defective myelination are reported. The peripheral nerve was studied by light and electron microscopy; different morphological characteristics have been noticed in these patients. Case 1 presented aspects of defective myelination with atypical “onion bulb” formation composed of multiple layers of basement membrane. In case 2, defective myelination and atypical “onion bulb” formation were associated with aberrant hypermyelination. Cases 3 and 4 were brothers, who presented axonal damage and atypical “onion bulb” formation.
    Type of Medium: Electronic Resource
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  • 3
    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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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 67 (1985), S. 136-141 
    ISSN: 1432-0533
    Keywords: Axon ; Myelin ; Peripheral nerve ; Polyarteritis nodosa
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Peripheral nerves from 13 patients suffering from polyarteritis nodosa with multiple mononeuropathy were studied by light and electron microscopy. In the majority of cases, the vascular lesions were associated with Wallerian-like degeneration. Myelinated fibers presenting a normal axon with a disproportionately thin myelin sheath were less numerous. Unusual abnormalities consisted of swollen axons with an accumulation of organelles. Unmyelinated fibers were also damaged. A quantitative estimation of myelinated fibers loss did not show any selective vulnerability of either the large or the small diameter group.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Acta neuropathologica 78 (1989), S. 105-107 
    ISSN: 1432-0533
    Keywords: Angiotropic lymphoma ; Malignant lymphoma ; Nerve ; Neuropathy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Angiotropic lymphoma can present as a vascular disease in the central nervous system. The patient described in this report had a sudden pain in the region of the right superficial peroneal nerve and a nerve biopsy showed tumoral cells in the lumen of most small blood vessels. This pathology, first described in the skin as malignant angioendotheliomatosis, can be compared with the occurrence of multiple emboli in the vasa nervorum. In recent cases, tumoral markers have evidenced a lymphomatous origin, generally of the B type.
    Type of Medium: Electronic Resource
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  • 6
    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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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 148 (1989), S. 470-472 
    ISSN: 1432-1076
    Keywords: Axonopathy ; Congenital neuropathy ; Myelin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report a case of congenital neuropathy taking a rapidly fatal clinical course. Ultrastructural features of the peripheral nerve were unusual with sparsity of myelinated fibres, lack of “onion bulb” formation and presence of axonal damage. This case is compared with previously reported cases of early infantile neuropathy.
    Type of Medium: Electronic Resource
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