Published in:
01-12-2016 | Neurology and Preclinical Neurological Studies - Review Article
Botulinum toxin type A in motor nervous system: unexplained observations and new challenges
Authors:
I. Matak, Z. Lacković, M. Relja
Published in:
Journal of Neural Transmission
|
Issue 12/2016
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Abstract
In the motor system, botulinum toxin type A (BoNT/A) actions were classically attributed to its well-known peripheral anticholinergic actions in neuromuscular junctions. However, the enzymatic activity of BoNT/A, assessed by the detection of cleaved synaptosomal-associated protein 25 (SNAP-25), was recently detected in motor and sensory regions of the brainstem and spinal cord after toxin peripheral injection in rodents. In sensory regions, the function of BoNT/A activity is associated with its antinociceptive effects, while in motor regions we only know that BoNT/A activity is present. Is it possible that BoNT/A presence in central motor nuclei is without any function? In this brief review, we analyze this question. Limited data available in the literature warrant further investigations of BoNT/A actions in motor nervous system.