INTERLEUKIN-6 LEVELS IN THE CEREBROSPINAL-FLUID AND SERUM OF PATIENTS WITH GUILLAIN-BARRE-SYNDROME AND CHRONIC INFLAMMATORY DEMYELINATING POLYRADICULONEUROPATHY

被引:86
作者
MAIMONE, D [1 ]
ANNUNZIATA, P [1 ]
SIMONE, IL [1 ]
LIVREA, P [1 ]
GUAZZI, GC [1 ]
机构
[1] UNIV BARI,NEUROL CLIN,I-70124 BARI,ITALY
关键词
INTERLEUKIN-6; CYTOKINES; CEREBROSPINAL FLUID; GUILLAIN-BARRE SYNDROME; POLYNEUROPATHY;
D O I
10.1016/0165-5728(93)90284-6
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Clinical and experimental findings suggest that humoral factors, such as anti-peripheral nerve antibodies and cytokines, may be implicated in the immunopathogenesis of Guillain-Barre syndrome (GBS) and chronic inflammatory demyelinating polyradiculoneuropathy (CIDP). Interleukin-6 (IL-6) is a multifunctional cytokine that promotes immunoglobulin synthesis by B lymphocytes. Increased IL-6 release is associated with autoantibody production in a number of immune-mediated and neoplastic disorders. To investigate the possible involvement of abnormal IL-6 release in inflammatory polyneuropathies, we assayed IL-6 levels in the cerebrospinal fluid (CSF) and serum of 23 patients with acute GBS and seven with CIDP. We also studied 69 patients with other non-inflammatory neurological diseases (NIND), 25 with other inflammatory neurological diseases (IND), four with brain tumors (BT), and 15 normal donors (serum alone) as controls. We found detectable levels of IL-6 in the CSF of 57% of GBS, 43% of CIDP, 60% of IND, 75% of BT, and 4% of NIND. In GBS patients, no correlation was found between CSF IL-6 values and other laboratory or clinical parameters, such as CSF total protein, CSF albumin, CSF IgG, CSF/serum albumin ratio, functional disability score, and time elapsed from disease onset. Serum IL-6 levels were increased in six of 23 (26%) GBS, in one of 39 (3%) NIND, and in one of seven (14%) IND, but in none of the CIDP or BT patients. There was no correlation between serum and CSF IL-6 values, but cytokine levels in GBS sera correlated with time elapsed from clinical onset. In addition, we measured anti-GM1 IgG and IgM levels in the CSF and sera of GBS and CIDP patients to study the possible association of these autoantibodies with increased IL-6 secretion. In both CSF and sera of GBS or CIDP patients, increased anti-GM1 antibody levels were not associated with elevated IL-6. We conclude that elevated IL-6 levels are frequently detected in the CSF of patients with inflammatory polyneuropathies, especially GBS. The presence of a heightened IL-6 release, however, is not required for the production of anti-GM1 antibodies in GBS and CIDP patients. Additional studies may clarify whether testing CSF IL-6 levels in the early phase of GBS would help in defining the inflammatory nature of the polyneuropathy, prompting a faster choice of plasma exchange treatment.
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页码:55 / 62
页数:8
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