Changes in serum complements and their regulators in generalized myasthenia gravis.

Abstract:

OBJECTIVE:To investigate changes in serum complements and their regulators in the pathogenesis of myasthenia gravis (MG). METHODS:Forty-four patients with acetylcholine receptor antibody-positive MG, as well as 20 patients with non-inflammatory neurological disorders were enrolled. Serum complements (C3, C4 and soluble C5b-9) and complement regulators (vitronectin, clusterin and properdin) were extensively analysed by enzyme-linked immunosorbent assay and their associations with clinical profiles of MG were examined. RESULTS:Serum C3, C4 and clusterin levels were not significantly different between patients with MG and controls. The patients with MG had higher soluble C5b-9 (P = 0.09) and vitronectin (P = 0.001) levels than the controls; moreover, vitronectin levels decreased after treatment (P = 0.09). Serum properdin (P = 0.03) levels were lower in the patients with MG than in the controls, and negatively correlated with the MG Activities of Daily Living score (rs = -0.26, P = 0.09) and with the presence of bulbar palsy (P = 0.04). CONCLUSION:Our results show that activation of complements and an altered complement network could contribute to the inflammatory pathogenesis of MG.

journal_name

Eur J Neurol

authors

Ozawa Y,Uzawa A,Yasuda M,Kojima Y,Oda F,Himuro K,Kawaguchi N,Kuwabara S

doi

10.1111/ene.14500

subject

Has Abstract

pub_date

2021-01-01 00:00:00

pages

314-322

issue

1

eissn

1351-5101

issn

1468-1331

journal_volume

28

pub_type

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