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Abstract
Paraproteins display a characteristic pattern of limited heterogeneity on isoelectric
focusing. In a group of 50 patients with various neurological disorders and paraproteinaemia
this pattern could be demonstrated in serum and cerebrospinal fluid simultaneously,
regardless of the form of nervous system involvement or of the function of the blood-cerebrospinal
fluid barrier. Although there were no qualitative differences in the pattern between
paraproteins from benign and malignant cases, a distinct quantitative difference was
found: Paraproteins from myeloma patients had significantly more subfractions extending
over a wider pH range than paraproteins from patients with benign monoclonal gammopathy.
Due to the high sensitivity of isoelectric focusing, more paraproteins could be detected
in cases where other electrophoretic methods including immunoelectrophoresis were
negative. A surprisingly high percentage of patients was found with benign monoclonal
gammopathy and vascular lesions of the central nervous system.
Keywords
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Article info
Publication history
Accepted:
February 10,
1984
Received in revised form:
January 30,
1984
Received:
September 1,
1983
Identification
Copyright
© 1984 Published by Elsevier Inc.