Lower motor neuron syndrome associated with IgG anti-GM1 antibodies revisited.
A patient, who developed an amyotrophic lateral sclerosis-like disorder subsequent to ganglioside treatment, had IgM antibodies to GM2 as well as to minor gangliosides X1 and X2 containing GM2 epitope. These gangliosides as well as GM1 were tested in 655 sera obtained from patients who were suspected of having amyotrophic lateral sclerosis or motor neuron disease to find a treatable condition. Three patients had high titers of IgG anti-GM1 antibodies, but no IgM anti-GM1 antibodies. One of the patients also had IgG anti-X2 antibodies. The patients, being diagnosed with having lower motor neuron syndrome, had neither upper motor neuron signs nor multifocal conduction block. Both IgM and IgG anti-GM1 antibodies should be tested in patients who have lower motor neuron syndrome.
Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore; Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
Nobuhiro
N
Yuki
Department of Neurology, Dokkyo Medical University, Tochigi, Japan.
Chiaki
C
Yanaka
Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
Makoto
M
Sudo
Institute for Medical Science, Dokkyo Medical University, Tochigi, Japan.
Miyuki
M
Funakoshi
Department of Applied Bioorganic Chemistry, Gifu University, Gifu, Japan.
Hideharu
H
Ishida
Department of Neurology, Graduate School of Medicine, Chiba University, Chiba, Japan.
Masahiro
M
Mori
Division of Neurology, Kobe University Hospital, Hyogo, Japan.
Fumio
F
Kanda
Department of Neurology, Dokkyo Medical University, Tochigi, Japan.
Koichi
K
Hirata
D000690:Amyotrophic Lateral Sclerosis / Q000097:blood / Q000276:immunology*; D003176:Complement C3 / Q000378:metabolism; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005677:G(M1) Ganglioside / Q000276:immunology*; D006801:Humans; D007074:Immunoglobulin G / Q000097:blood* / Q000276:immunology; D007075:Immunoglobulin M / Q000097:blood / Q000276:immunology; D008297:Male; D012189:Retrospective Studies
D003176:Complement C3; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D005677:G(M1) Ganglioside
Amyotrophic lateral sclerosis; Anti-GM1 antibody; Motor neuron disease