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Reebye R, Balbert A, Bensmail D, Walker H, Wissel J, Deltombe T, Francisco G. Module 2: Nonsurgical management of Spasticity. THE JOURNAL OF THE INTERNATIONAL SOCIETY OF PHYSICAL AND REHABILITATION MEDICINE 2022. [DOI: 10.4103/2349-7904.347808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Abrahão Cunha TC, Gontijo Couto AC, Januzzi E, Rosa Ferraz Gonçalves RT, Silva G, Silva CR. Analgesic potential of different available commercial brands of botulinum neurotoxin-A in formalin-induced orofacial pain in mice. Toxicon X 2021; 12:100083. [PMID: 34527897 PMCID: PMC8429966 DOI: 10.1016/j.toxcx.2021.100083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 03/29/2021] [Accepted: 08/26/2021] [Indexed: 11/29/2022] Open
Abstract
The use of botulinum neurotoxin-A (BoNT-A) is an alternative for the management of orofacial pain disorders. Although only Botox has labeled, there are other commercial brands available for use, among them: Dysport, Botulift, Prosigne, and Xeomin. The objective of the present study was to evaluate the possible differences in the antinociceptive effect evoked by different commercially available formulations of BoNT-A in an animal model of inflammatory orofacial pain induced by formalin injection. Male C57/BL6 mice (20–25 g) were submitted to the pre-treatment with five different commercial brands of BoNT-A (Botox, Botulift, Xeomin, Dysport, or Prosigne; with doses between 0.02 and 0.2 Units of Botulinum Toxin, in 20 μL of 0.9% saline) three days prior the 2% formalin injection. All injections were made subcutaneously into the right perinasal area. After formalin injections, nociceptive behaviors like rubbing the place of injection were quantified during the neurogenic (0–5 min) and inflammatory (15–30 min) phases. The treatment using Botox, Botulift, and Xeomin were able to induce antinociceptive effects in both phases of the formalin-induced pain animal model, however, Dysport and Prosigne reduced the response in neither of them. Our data suggest that the treatment using different formulations of BoNT-A is not similar in efficacy as analgesics when evaluated in formalin-induced orofacial pain in mice. Botulinum neurotoxin-a reduced formalin-induced orofacial pain in mice. There are differences in the analgesic potential of different available commercial brands of botulinum neurotoxin-A. Botox, Botulift, Xeomin demonstrated analgesic effect when evaluated in formalin-induced orofacial pain in mice.
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Affiliation(s)
- Thays Crosara Abrahão Cunha
- Post-Graduated Program Genetics and Biochemistry, Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Ana Claudia Gontijo Couto
- Post-Graduated Program Genetics and Biochemistry, Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Eduardo Januzzi
- Post-Graduated Program Orofacial Pain, CIODONTO, Belo Horizonte, MG, Brazil.,Orofacial Pain Department, MaterDei Hospital, Belo Horizonte, MG, Brazil
| | - Rafael Tardin Rosa Ferraz Gonçalves
- Post-Graduated Program Orofacial Pain, CIODONTO, Belo Horizonte, MG, Brazil.,Orofacial Pain Department, MaterDei Hospital, Belo Horizonte, MG, Brazil
| | - Graziella Silva
- Post-Graduated Program Orofacial Pain, CIODONTO, Belo Horizonte, MG, Brazil.,Orofacial Pain Department, MaterDei Hospital, Belo Horizonte, MG, Brazil
| | - Cassia Regina Silva
- Post-Graduated Program Genetics and Biochemistry, Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil
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McLean T, Norbury L, Conduit R, Shepherd N, Coloe P, Sasse A, Smooker P. Inactivated tetanus as an immunological smokescreen: A major step towards harnessing tetanus-based therapeutics. Mol Immunol 2020; 127:164-174. [PMID: 33002728 DOI: 10.1016/j.molimm.2020.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/01/2020] [Accepted: 09/08/2020] [Indexed: 11/24/2022]
Abstract
BACKGROUND AND PURPOSE Tetanus neurotoxin has many potential therapeutic applications, due to its ability to increase localised muscle tone when injected directly into a muscle. It is a closely related molecule to botulinum neurotoxin (most commonly known as Botox), which has been widely used to release muscle tension for therapeutic and cosmetic applications. However, tetanus toxin has been relegated to the "maybe pile" for protein therapeutics - as most of the population is vaccinated, leading to highly effective antibody-mediated protection against the toxin. The potential for tetanus-based therapeutics remains substantial if the problem of pre-existing immunity can be resolved. EXPERIMENTAL APPROACH A well-established murine model of localised muscular contraction was utilised. We administered functional tetanus toxin combined with an immunogenic, but functionally inactive, decoy molecule. KEY RESULTS Incorporation of the decoy molecule greatly reduces the dose of active toxin required to induce a localised increase in muscle tone in mice vaccinated with the human toxoid vaccine. CONCLUSION AND IMPLICATIONS Our results clearly demonstrate that the barriers to developing a tetanus toxin therapeutic are not insurmountable and the technology presented here is the first major step towards realising the therapeutic potential of this powerful neurotoxin. Opening the therapeutic potential of tetanus toxin will have huge implications for the wide range of diseases caused by low-tone muscle.
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Affiliation(s)
- Thomas McLean
- Bioscience and Food Technology, School of Science, Plenty Road, Building 223 Bundoora West campus, RMIT University, Bundoora, VIC 3083, Australia.
| | - Luke Norbury
- Bioscience and Food Technology, School of Science, Plenty Road, Building 223 Bundoora West campus, RMIT University, Bundoora, VIC 3083, Australia.
| | - Russell Conduit
- School of Health and Biomedical Sciences, College of Science, Engineering and Health, RMIT University, Bundoora, VIC 3083, Australia.
| | - Natalie Shepherd
- Bioscience and Food Technology, School of Science, Plenty Road, Building 223 Bundoora West campus, RMIT University, Bundoora, VIC 3083, Australia
| | - Peter Coloe
- Bioscience and Food Technology, School of Science, Plenty Road, Building 223 Bundoora West campus, RMIT University, Bundoora, VIC 3083, Australia.
| | - Anthony Sasse
- Bioscience and Food Technology, School of Science, Plenty Road, Building 223 Bundoora West campus, RMIT University, Bundoora, VIC 3083, Australia; Latrobe Regional Hospital, Gippsland, Australia.
| | - Peter Smooker
- Bioscience and Food Technology, School of Science, Plenty Road, Building 223 Bundoora West campus, RMIT University, Bundoora, VIC 3083, Australia.
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Enright KM, Sampalis J, Nikolis A. Adverse reactions associated with the esthetic use of soft tissue fillers and neurotoxins: a 53-year retrospective analysis of MedEffect™, Health Canada’s reporting database. J DERMATOL TREAT 2019; 32:538-543. [DOI: 10.1080/09546634.2019.1682501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Kaitlyn M. Enright
- Department of Experimental Surgery, McGill University, Montreal, Canada
- Erevna Innovations Inc, Research Unit, Montreal, Canada
- Victoria Park Medispa, Montreal, Canada
| | - John Sampalis
- Department of Surgery and Medicine, McGill University and University of Montreal, Montreal, Canada
- Division of Surgical Research, Head Surgical Epidemiology, McGill University, Montreal, Canada
- JSS Medical Research, Montreal, Canada
| | - Andreas Nikolis
- Erevna Innovations Inc, Research Unit, Montreal, Canada
- Victoria Park Medispa, Montreal, Canada
- Centre Hospitalier de l’Université de Montreal, Montreal, Canada
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