Polyclonal IgM and IgA block in vitro complement deposition mediated by anti-ganglioside antibodies in autoimmune neuropathies.

Sudo, Makoto; Miyaji, Kazuki; Späth, Peter Julius; Morita-Matsumoto, Kana; Yamaguchi, Yoshiki; Yuki, Nobuhiro (2016). Polyclonal IgM and IgA block in vitro complement deposition mediated by anti-ganglioside antibodies in autoimmune neuropathies. International immunopharmacology, 40, pp. 11-15. Elsevier 10.1016/j.intimp.2016.08.019

Text polyclonal.pdf - Published Version Restricted to registered users only Available under License Publisher holds Copyright. Download (611kB)

Intravenous immunoglobulin (IVIG), consisting of IgG, is the first-line treatment for Guillain-Barré syndrome and multifocal motor neuropathy. IgG, but neither IgM nor IgA, has been demonstrated in vitro to inhibit complement deposition mediated by anti-ganglioside autoantibodies in sera from patients with both conditions. The objective of this study is to investigate the in vitro effectiveness of IgM and IgA in inhibiting complement deposition to ganglioside/anti-ganglioside antibody complexes. Serum samples were obtained from patients with multifocal motor neuropathy associated with anti-GM1 IgM antibodies, Guillain-Barré syndrome associated with anti-GM1 IgG antibodies and Miller Fisher syndrome associated with anti-GQ1b IgG antibodies. Inhibition of complement deposition using different immunoglobulin preparations was measured by enzyme-linked immunosorbent assay. IgM/A-enriched IVIG and immunoglobulin isotypes (polyclonal IgM and IgA) showed higher potential in inhibiting complement deposition than standard IVIG. Although the safety concerns about the use of IgM and IgA for an immunotherapy still remain, IgM and IgA may serve as an alternative immunotherapy in those anti-ganglioside antibody-mediated neuropathies.

Interest & Impact

Downloads

2 since deposited on 20 Mar 2018
0 in the past 12 months

Citations

5 Citations in Web of Science ®
6 Citations in Scopus

Search

in Google Scholar™

Services

Actions (login required)

Edit item

Actions (login required)

Edit item