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  • Title: Opsoclonus-myoclonus-dysequilibrium syndrome: cytological and immunological dynamics in the serial cerebrospinal fluid in two patients.
    Author: Bartos A, Pitha J.
    Journal: J Neurol; 2003 Dec; 250(12):1420-5. PubMed ID: 14673573.
    Abstract:
    A peculiar clinical presentation characterized by the triad of opsoclonus,myoclonus and ataxia, mainly in a form of dysequilibrium, is usually associated with infectious or paraneoplastic processes. Serial cerebrospinal fluid (CSF) analysis in two patients with opsoclonus-myoclonus-dysequilibrium syndrome suggestive of viral encephalitis were performed from disease onset for up to 8 months. A cell count, cytology, total protein and glucose concentrations in CSF, the blood-CSF barrier function, intrathecal synthesis of immunoglobulins (Ig) in class M, G and A expressed as IgM, IgG and IgA indices and oligoclonal IgG bands were monitored. Cellular and humoral alterations in both patients were slight at the onset becoming more pronounced a month later. The kinetics of the CSF changes mirrored the subacute clinical deterioration and subsequent recovery. The delayed response in the CSF measures and the gradual clinical deterioration suggest the development of subacute brain inflammation. A mononuclear pleocytosis, including macrophages and plasma cells, increased within the first month and then normalized during the following weeks. Intrathecally synthesized IgM occurred only transiently after one month of illness, whereas intrathecal IgG production increased during the first month and persisted for at least eight months. An increasing number of oligoclonal IgG bands during the course, indicative of expanding local intrathecal synthesis, was noted. The dynamics of these CSF changes supports the hypothesis that opsoclonus-myoclonus syndrome is a post-infectious immune- mediated condition.
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