Presynaptic neuromuscular transmission defect in the stiff person syndrome.
Cuvinte cheie
Abstract
BACKGROUND
The stiff person syndrome (SPS) is a rare disorder characterized by muscular rigidity and stiffness.
METHODS
We describe an SPS patient presenting with longstanding fatigue and electrophysiological evidence of presynaptic neuromuscular transmission defect, who responded to administration of pyridostigmine. In contrast, no electrophysiolgical evidence of neuromuscular transmission defect was demonstrated in 2 other SPS patients without fatigue symptoms.
CONCLUSIONS
Our findings suggest that glutamic acid decarboxylase (GAD) antibodies may play a role in presynaptic neuromuscular transmission defect of SPS patients with fatigue.