Journal of neurology, neurosurgery, and psychiatry · 2010
Neuromuscular transmission is not impaired in axonal Guillain--Barré syndrome.
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Kuwabara Satoshi, Kokubun N, Misawa S, Kanai K, Isose S, Shibuya K, Noto Y, Mori M, Sekiguchi Y, Nasu S, Fujimaki Y, Hirata K, Yuki N
Аннотация
BACKGROUND: Previous studies have shown that anti-GQ1b antibodies induce massive neuromuscular blocking. If anti-GM1 and -GD1a antibodies have similar effects on the neuromuscular junction (NMJ) in human limb muscles, this may explain selective motor involvement in axonal Guillain--Barré syndrome (GBS).
METHODS: Axonal-stimulating single-fibre electromyography was performed in the extensor digitorum communis muscle of 23 patients with GBS, including 13 with the axonal form whose sera had a high titre of serum IgG anti-GM1 or -GD1a antibodies.
RESULTS: All patients with axonal or demyelinating GBS showed normal or near-normal jitter, and no blocking.
CONCLUSION: In both axonal and demyelinating GBS, neuromuscular transmission is not impaired. Our results failed to support the hypothesis that anti-GM1 or -GD1a antibody affects the NMJ. In GBS, impulse transmission is presumably impaired in the motor nerve terminal axons proximal to the NMJ.
METHODS: Axonal-stimulating single-fibre electromyography was performed in the extensor digitorum communis muscle of 23 patients with GBS, including 13 with the axonal form whose sera had a high titre of serum IgG anti-GM1 or -GD1a antibodies.
RESULTS: All patients with axonal or demyelinating GBS showed normal or near-normal jitter, and no blocking.
CONCLUSION: In both axonal and demyelinating GBS, neuromuscular transmission is not impaired. Our results failed to support the hypothesis that anti-GM1 or -GD1a antibody affects the NMJ. In GBS, impulse transmission is presumably impaired in the motor nerve terminal axons proximal to the NMJ.