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2015 ; 35
(17
): 6770-85
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Anti-Ganglioside Antibodies Induce Nodal and Axonal Injury via Fc?
Receptor-Mediated Inflammation
#MMPMID25926454
He L
; Zhang G
; Liu W
; Gao T
; Sheikh KA
J Neurosci
2015[Apr]; 35
(17
): 6770-85
PMID25926454
show ga
Guillain-Barré syndrome (GBS) is a postinfectious autoimmune neuropathy and
anti-ganglioside antibodies (Abs) are strongly associated with this disorder.
Several studies have implied that specific anti-ganglioside Abs induce neuropathy
in patients with axonal forms of GBS. To study the mechanisms of anti-ganglioside
Abs-induced neuropathy, we established a new passive transfer mouse model by L5
spinal nerve transection (L5SNT; modified Chung's model) and systemic
administration of anti-ganglioside Abs. L5SNT causes degeneration of a small
proportion of fibers that constitute sciatic nerve and its branches, but
importantly breaks the blood-nerve barrier, which allows access to circulating
Abs and inflammatory cells. Our studies indicate that, in this mouse model,
anti-ganglioside Abs induce sequential nodal and axonal injury of intact
myelinated nerve fibers, recapitulating pathologic features of human disease.
Notably, our results showed that immune complex formation and the activating Fc
gamma receptors (Fc?Rs) were involved in the anti-ganglioside Abs-mediated nodal
and axonal injury in this model. These studies provide new evidence that the
activating Fc?Rs-mediated inflammation plays a critical role in anti-ganglioside
Abs-induced neuropathy (injury to intact nerve fibers) in GBS.