GD1b-specific antibodies may bind to complex of GQ1b and GM1, causing ataxia

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• 作者：Nobuhiro Yuki (1) (2)
  Yuki Fukami (1)
  Chiaki Yanaka (3)
  Saiko Koike (4)
  Koichi Hirata (3)
  
• 关键词：Guillain–Barré syndrome ; Autoimmune diseases ; Post ; infectious ; Peripheral neuropathy ; Anti ; ganglioside antibody
• 刊名：Journal of Neurology
• 出版年：2014
• 出版时间：August 2014
• 年：2014
• 卷：261
• 期：8
• 页码：1565-1569
• 全文大小：567 KB
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• 作者单位：Nobuhiro Yuki (1) (2)
  Yuki Fukami (1)
  Chiaki Yanaka (3)
  Saiko Koike (4)
  Koichi Hirata (3)
  
  1. Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
  2. Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
  3. Department of Neurology, Dokkyo Medical University, Tochigi, Japan
  4. Institute for Medical Science, Dokkyo Medical University, Tochigi, Japan
  
• ISSN：1432-1459

文摘

Monospecific IgG antibodies to GD1b ganglioside (GD1b-specific antibodies) have been found in patients with acute ataxic neuropathy and Guillain–Barré syndrome, but the association of the GD1b-specific antibodies with specific neurological conditions has yet to be established. We tested sera from more than 10,000 patients with various neurological disorders, and found six sera, which contained IgG antibodies to GD1b, but not to LM1, GM1, GM1b, GD1a, GalNAc-GD1a, GT1a, GT1b?and GQ1b. All six patients who carried GD1b-specific antibodies presented with acute onset of ataxia and monophasic course of the illness, of whom five demonstrated cerebellar-like ataxia. Four patients had antecedent symptoms of upper respiratory tract infection. The six patients demonstrated areflexia, and four complained of distal numbness. All the six patients who had the GD1b-specific antibodies carried IgG antibodies to complex of GQ1b/GM1 and GT1a/GM1. GD1b-specific antibodies were significantly absorbed by GQ1b/GM1 and GT1a/GM1 and anti-GQ1b/GM1 and -GT1a/GM1 antibodies were absorbed by GD1b. In conclusion, the GD1b-specific antibodies, which recognizes GQ1b/GM1 or GT1a/GM1 complex, are associated with acute ataxia.