Article (Scientific journals)
Effects of Botulinum Toxin Type A on the Nociceptive and Lemniscal Somatosensory Systems in Chronic Migraine: An Electrophysiological Study.
Sebastianelli, Gabriele; Casillo, Francesco; Di Renzo, Antonio et al.
2023In Toxins, 15 (1), p. 76
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Keywords :
botulinum toxin type A; central sensitization; lemniscal system; migraine; pain; peripheral sensitization; trigemino-cervical complex; Botulinum Toxins, Type A; Humans; Nociception; Pain; Sense Organs; Botulinum Toxins, Type A/therapeutic use; Botulinum Toxins, Type A/pharmacology; Migraine Disorders/drug therapy; Migraine Disorders; Toxicology; Health, Toxicology and Mutagenesis
Abstract :
[en] (1) Background: OnabotulinumtoxinA (BoNT-A) is a commonly used prophylactic treatment for chronic migraine (CM). Although randomized placebo studies have shown its clinical efficacy, the mechanisms by which it exerts its therapeutic effect are still incompletely understood and debated. (2) Methods: We studied in 15 CM patients the cephalic and extracephalic nociceptive and lemniscal sensory systems using electrophysiological techniques before and 1 and 3 months after one session of pericranial BoNT-A injections according to the PREEMPT protocol. We recorded the nociceptive blink reflex (nBR), the trigemino-cervical reflex (nTCR), the pain-related cortical evoked potential (PREP), and the upper limb somatosensory evoked potential (SSEP). (3) Results: Three months after a single session of prophylactic therapy with BoNT-A in CM patients, we found (a) an increase in the homolateral and contralateral nBR AUC, (b) an enhancement of the contralateral nBR AUC habituation slope and the nTCR habituation slope, (c) a decrease in PREP N-P 1st and 2nd amplitude block, and (d) no effect on SSEPs. (4) Conclusions: Our study provides electrophysiological evidence for the ability of a single session of BoNT-A injections to exert a neuromodulatory effect at the level of trigeminal system through a reduction in input from meningeal and other trigeminovascular nociceptors. Moreover, by reducing activity in cortical pain processing areas, BoNT-A restores normal functioning of the descending pain modulation systems.
Disciplines :
Neurology
Author, co-author :
Sebastianelli, Gabriele ;  Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome Polo Pontino-ICOT, 04100 Latina, Italy
Casillo, Francesco;  Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome Polo Pontino-ICOT, 04100 Latina, Italy
Di Renzo, Antonio;  IRCCS-Fondazione Bietti, 00198 Rome, Italy
Abagnale, Chiara;  Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome Polo Pontino-ICOT, 04100 Latina, Italy
Cioffi, Ettore ;  Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome Polo Pontino-ICOT, 04100 Latina, Italy
Parisi, Vincenzo;  IRCCS-Fondazione Bietti, 00198 Rome, Italy
Di Lorenzo, Cherubino;  Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome Polo Pontino-ICOT, 04100 Latina, Italy
Serrao, Mariano;  Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome Polo Pontino-ICOT, 04100 Latina, Italy
Pierelli, Francesco;  Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome Polo Pontino-ICOT, 04100 Latina, Italy
Schoenen, Jean  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques
Coppola, Gianluca ;  Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome Polo Pontino-ICOT, 04100 Latina, Italy
Language :
English
Title :
Effects of Botulinum Toxin Type A on the Nociceptive and Lemniscal Somatosensory Systems in Chronic Migraine: An Electrophysiological Study.
Publication date :
14 January 2023
Journal title :
Toxins
eISSN :
2072-6651
Publisher :
MDPI, Switzerland
Volume :
15
Issue :
1
Pages :
76
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Allergan (Ireland)
Funding text :
This research received external funding from Allergan Ireland (now Abbvie, Legacy Grant ID: IIT-EAME-NEU-0417).The contribution of the G.B. Bietti Foundation in this paper was supported by the Italian Ministry of Health and Fondazione Roma.
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