Bilateral Functional Electrical Stimulation for the Treatment of Presbyphonia in a Sheep Model
Kirsch A, Gerstenberger C, Jakubaß B, Tschernitz M, Perkins JD, Groselj-Strele A, Lanmüller H, Jarvis JC, Kniesburges S, Döllinger M, Gugatschka M (2023)
Publication Type: Journal article
Publication year: 2023
Journal
DOI: 10.1002/lary.30984
Abstract
Objectives: The aim of the study was to increase muscle volume and improve phonation characteristics of the aged ovine larynx by functional electrical stimulation (FES) using a minimally invasive surgical procedure. Methods: Stimulation electrodes were placed bilaterally near the terminal adduction branch of the recurrent laryngeal nerves (RLN). The electrodes were connected to battery powered pulse generators implanted subcutaneously at the neck region. Training patterns were programmed by an external programmer using a bidirectional radio frequency link. Training sessions were repeated automatically by the implant every other day for 1 week followed by every day for 8 weeks in the awake animal. Another group of animals were used as sham, with electrodes positioned but not connected to an implant. Outcome parameters included gene expression analysis, histological assessment of muscle fiber size, functional analysis, and volumetric measurements based on three-dimensional reconstructions of the entire thyroarytenoid muscle (TAM). Results: Increase in minimal muscle fiber diameter and an improvement in vocal efficiency were observed following FES, compared with sham animals. Conclusion: This is the first study to demonstrate beneficial effects in the TAM of FES at molecular, histological, and functional levels. FES of the terminal branches of the RLN reversed the effects of age-related changes and improved vocal efficiency. Level of Evidence: NA Laryngoscope, 2023.
Authors with CRIS profile
Bernhard Jakubaß
Department of Otorhinolaryngology – Head and Neck Surgery
Stefan Kniesburges
Michael Döllinger Professur für Computational Medicine (DFG-Forschungsprofessur)
Michael Döllinger Professur für Computational Medicine (DFG-Forschungsprofessur)
Involved external institutions
Steiermärkische Krankenanstaltengesellschaft m. b. H. LKH-Univ. Klinikum Graz
Austria (AT)
University of London
United Kingdom (GB)
Medizinische Universität Graz
Austria (AT)
Medizinische Universität Wien
Austria (AT)
Liverpool John Moores University (JMU)
United Kingdom (GB)
Austria (AT)
University of London
United Kingdom (GB)
Medizinische Universität Graz
Austria (AT)
Medizinische Universität Wien
Austria (AT)
Liverpool John Moores University (JMU)
United Kingdom (GB)
How to cite
APA:
Kirsch, A., Gerstenberger, C., Jakubaß, B., Tschernitz, M., Perkins, J.D., Groselj-Strele, A.,... Gugatschka, M. (2023). Bilateral Functional Electrical Stimulation for the Treatment of Presbyphonia in a Sheep Model. Laryngoscope. https://doi.org/10.1002/lary.30984
MLA:
Kirsch, Andrijana, et al. "Bilateral Functional Electrical Stimulation for the Treatment of Presbyphonia in a Sheep Model." Laryngoscope (2023).
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