The Role of Botulinum and Other Clostridial Neurotoxins in Central Nervous System

A special issue of Toxins (ISSN 2072-6651). This special issue belongs to the section "Bacterial Toxins".

Deadline for manuscript submissions: closed (25 September 2022) | Viewed by 9174

Special Issue Editors


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Guest Editor
Neuroscience Institute, National Research Council (CNR), 56124 Pisa, Italy
Interests: synapses; trafficking; plasticity; motoneurons; physiology; hyperexcitability; visual system; electrical activity
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Guest Editor
1. Asklepios Fachklinikum Stadtroda, Department of Neurology, Stadtroda, 07646 Stadtroda, Germany
2. University of Leipzig, Department of Neurology, 04103 Leipzig, Germany
Interests: movement disorders; Parkinson’s disease; dystonia; botulinum neurotoxin; motor cortex plasticity; neurophysiology; neurosonography

Special Issue Information

Dear Colleagues,

Botulinum neurotoxins (BoNTs) are clostridial neurotoxins and are among the most potent toxins known. Despite this, BoNTs, in particular BoNT type A, are an established therapy for a variety of clinical conditions, such as dystonia or spasticity, but also pain syndromes such as chronic migraines or neuropathic pain. BoNT has also gained importance in other non-neurological disorders such as in urology, dermatology, or surgery. BoNT is known to primarily act peripherally at the neuromuscular junction, resulting in a biochemical denervation of the treated muscle or at sensory pain neurons, preventing pain sensitization. However, there is more and more evidence from animal and human studies or experimental models that BoNT may not only act peripherally at the injection site but may also have central effects. The effects of BoNT on the central nervous system (CNS) may be due to direct central actions via retrograde axonal trafficking or the consequence of indirect mechanisms via changes to axonal afferents. However, the exact mechanisms are still not known. These BoNT-related central effects may not only be considered secondary or side effects, but may potentially contribute to the clinical, therapeutic effect of BoNT.

This Special Issue aims to describe and prove BoNTs-related effects on the CNS in different neurological and non-neurological conditions and their positive, therapeutic but also potentially negative clinical implications. Another aim is to elucidate the potential mechanisms involved in these central effects. Human studies based on clinical observations, neurophysiological investigations, or neuroimaging studies are welcome, as well as animal studies and experimental models. In this Special Issue, original research articles and reviews are both encouraged.

We look forward to receiving your contributions.

Dr. Laura Restani
Dr. David Weise
Guest Editors

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Keywords

  • botulinum neurotoxin
  • clostridial neurotoxins
  • central nervous system
  • clinical application
  • therapeutic implications
  • human studies
  • experimental models

Published Papers (1 paper)

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Review

17 pages, 890 KiB  
Review
Botulinum Neurotoxins in Central Nervous System: An Overview from Animal Models to Human Therapy
by Siro Luvisetto
Toxins 2021, 13(11), 751; https://doi.org/10.3390/toxins13110751 - 22 Oct 2021
Cited by 20 | Viewed by 8581
Abstract
Botulinum neurotoxins (BoNTs) are potent inhibitors of synaptic vesicle fusion and transmitter release. The natural target of BoNTs is the peripheral neuromuscular junction (NMJ) where, by blocking the release of acetylcholine (ACh), they functionally denervate muscles and alter muscle tone. This leads them [...] Read more.
Botulinum neurotoxins (BoNTs) are potent inhibitors of synaptic vesicle fusion and transmitter release. The natural target of BoNTs is the peripheral neuromuscular junction (NMJ) where, by blocking the release of acetylcholine (ACh), they functionally denervate muscles and alter muscle tone. This leads them to be an excellent drug for the therapy of muscle hyperactivity disorders, such as dystonia, spasticity, and many other movement disorders. BoNTs are also effective in inhibiting both the release of ACh at sites other than NMJ and the release of neurotransmitters other than ACh. Furthermore, much evidence shows that BoNTs can act not only on the peripheral nervous system (PNS), but also on the central nervous system (CNS). Under this view, central changes may result either from sensory input from the PNS, from retrograde transport of BoNTs, or from direct injection of BoNTs into the CNS. The aim of this review is to give an update on available data, both from animal models or human studies, which suggest or confirm central alterations induced by peripheral or central BoNTs treatment. The data will be discussed with particular attention to the possible therapeutic applications to pathological conditions and degenerative diseases of the CNS. Full article
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