67. Anti-ganglioside antibodies in Korean Guillain–Barré syndrome

Kim, J.; Yoo, Bong-Goo; Busan,; Kim, S.; Bae, Jun-Seok; Kusunoki, Susumu; Kim, D.

doi:10.1016/j.clinph.2007.11.117

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“…AMAN patients with axonal degeneration tended to show rapid progression, late recovery and poor outcome, whereas AMAN patients with RCB tended to show fast recovery and good outcome. 1,4 RCB was reported in about 45% among patients with AMAN in two recent retrospective studies. 6,7 RCB was observed in 12 patients (70.6%) among 17 patients with AMAN in a study of Korea.…”

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confidence: 99%

“…[3][4][5] On the other hand, acute motor sensory axonal neuropathy (AMSAN) is a rare disease compared with AMAN, but the pathophysiology and clinical course of AMSAN are reported to be similar to those of AMAN except sensory nerve involvement. Reversible conduction block (RCB) which was known to be associated with a sodium-channel dysfunction in node of Ranvier has been reported in some AMAN patients.…”

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A case of acute motor sensory axonal neuropathy presenting reversible conduction block

Lee

Kim

Park

et al. 2018

Ann Clin Neurophysiol

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Acute motor axonal neuropathy (AMAN) is a subtype of Guillain-Barre syndrome (GBS), which is relatively common in East Asia including Japan, China, and Korea.1,2 According to some reports, AMAN is more prevalent than typical GBS known as acute inflammatory demyelinating polyradiculoneuropathy (AIDP). [3][4][5] On the other hand, acute motor sensory axonal neuropathy (AMSAN) is a rare disease compared with AMAN, but the pathophysiology and clinical course of AMSAN are reported to be similar to those of AMAN except sensory nerve involvement. Reversible conduction block (RCB) which was known to be associated with a sodium-channel dysfunction in node of Ranvier has been reported in some AMAN patients. AMAN with RCB is known to show relative rapid recovery and good prognosis.1,2 However, RCB was rarely reported in patients with AMSAN and the clinical course and outcome in patients with AMSAN with RCB were not well-known. Recently, we experienced a case of AMSAN with RCB in serial electrophysiologic studies. Reversible conduction block (RCB) was rare in patients with acute motor sensory axonal neuropathy (AMSAN). A-46-year-old man presented with paresthesia, weakness, diplopia, and dysarthria. Nerve conduction study (NCS) exhibited axonal changes with conduction block in motor and sensory nerves. His symptoms were rapidly progressed and recovered. Conduction block was disappeared in the follow-up NCS performed after 2 weeks. The AMSAN case with RCB showed rapid progress and rapid recovery of clinical symptoms as acute motor axonal neuropathy patients with RCB.

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confidence: 99%