Normal vocal fold vibration is crucially dependent upon tissue composition and viscoelasticity. When composition of the extracellular matrix (ECM) of the vocal fold cover (i.e., lamina propria) is altered, vocal fold vibratory function can be severely disrupted due to alterations in tissue viscoelasticity. The dysphonias that result are generally difficult to treat effectively with current surgical paradigms and available biomaterials. Treatment failures have been ascribed to poor understanding of pathologic processes in the ECM, as well as suboptimal materials that may negatively affect vocal fold biomechanical properties. Accordingly, there is a clinical need for improved understanding of the pathophysiology of disrupted ECM and the development of advanced biomaterials that appreciate the biomechanical properties of the lamina propria. The long-term aim of this project is to engineer injectable products that promote wound repair and induce tissue regeneration, both for prophylactic treatment and for existing ECM defects of the lamina propria, i.e., scarring. We will focus on hyaluronic acid (HA) and its derivatives. These products will mimic normal ECM composition and yield optimal vocal fold ECM biomechanical properties. We will accomplish our long-term aim through a unique combination of systematic chemical, biomechanical, in vitro and in vivo animal studies. The overarching hypothesis is that in vivo ECM manipulation with injectable HA agents will yield optimal tissue composition and biomechanically functional results.

Agency
National Institute of Health (NIH)
Institute
National Institute on Deafness and Other Communication Disorders (NIDCD)
Type
Research Project (R01)
Project #
2R01DC004336-06
Application #
6871909
Study Section
Special Emphasis Panel (ZRG1-MOSS-G (01))
Program Officer
Shekim, Lana O
Project Start
2000-02-01
Project End
2010-01-31
Budget Start
2005-02-01
Budget End
2006-01-31
Support Year
6
Fiscal Year
2005
Total Cost
$619,682
Indirect Cost
Name
University of Utah
Department
Surgery
Type
Schools of Medicine
DUNS #
009095365
City
Salt Lake City
State
UT
Country
United States
Zip Code
84112
Bartlett, Rebecca S; Gaston, Joel D; Ye, Shuyun et al. (2018) Mechanotransduction of vocal fold fibroblasts and mesenchymal stromal cells in the context of the vocal fold mechanome. J Biomech :
Li, Linqing; Stiadle, Jeanna M; Levendoski, Elizabeth E et al. (2018) Biocompatibility of injectable resilin-based hydrogels. J Biomed Mater Res A 106:2229-2242
Brates, Danielle; Molfenter, Sonja M; Thibeault, Susan L (2018) Assessing Hyolaryngeal Excursion: Comparing Quantitative Methods to Palpation at the Bedside and Visualization During Videofluoroscopy. Dysphagia :
Bartlett, Rebecca S; Thibeault, Susan L (2018) Insights Into Oropharyngeal Dysphagia From Administrative Data and Clinical Registries: A Literature Review. Am J Speech Lang Pathol 27:868-883
Lungova, Vlasta; Verheyden, Jamie M; Sun, Xin et al. (2018) ?-Catenin signaling is essential for mammalian larynx recanalization and the establishment of vocal fold progenitor cells. Development 145:
Chen, Xia; Foote, Alexander G; Thibeault, Susan L (2017) Cell density, dimethylsulfoxide concentration and needle gauge affect hydrogel-induced bone marrow mesenchymal stromal cell viability. Cytotherapy 19:1522-1528
Li-Jessen, Nicole Y K; Powell, Michael; Choi, Ae-Jin et al. (2017) Cellular source and proinflammatory roles of high-mobility group box 1 in surgically injured rat vocal folds. Laryngoscope 127:E193-E200
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Tang, Sharon S; Mohad, Vidisha; Gowda, Madhu et al. (2017) Insights Into the Role of Collagen in Vocal Fold Health and Disease. J Voice 31:520-527
Stevens, Kimberly A; Thomson, Scott L; Jetté, Marie E et al. (2016) Quantification of Porcine Vocal Fold Geometry. J Voice 30:416-26

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