期刊
JOURNAL OF THE NEUROLOGICAL SCIENCES
卷 268, 期 1-2, 页码 74-77出版社
ELSEVIER
DOI: 10.1016/j.jns.2007.11.004
关键词
limbic encephalitis; voltage gated potassium channel antibodies; cerebrospinal fluid
Recently, a new subtype of limbic encephalitis (LE) has been described, serologically characterized by the presence of antibodies against voltage gated potassium channels (VGKC, to be called VGKC-LE). Only little is known about CSF findings in this new disorder. Here we report the results of 29 lumbar punctures in 17 patients with VGKC-LE. Slight pleocytosis, mainly consisting of lymphocytes and monocytes, and elevated total protein concentrations were present in 41 and 47%, respectively. Intrathecal immunoglobulin (Ig) synthesis as defined by the presence of CSF-specific oligoclonal IgG bands, an increased IgG index, or an elevated IgG, IgA, or IgM ratio, was not detected in any of the patients, but dysfunction of the blood-CSF barrier was found in 35%. CSF findings were normal in 23%. Conclusions: Unlike paraneoplastic LE, VGKC-LE is not frequently associated with intrathecal Ig production or markedly elevated white cell counts. Thus, normal CSF findings do not preclude the disease. VGKC-Ab should, therefore, be determined whenever LE is clinically suspected, irrespective of the presence or absence of inflammatory CSF changes. (C) 2007 Elsevier B.V. All rights reserved.
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