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Hyaluronan levels in acute vocal fold scar
Susan L Thibeault1, Bernard Rousseau, Nathan V Welham
1Division of Otolaryngology-Head and Neck Surgery, The University of Utah School of Medicine, Salt Lake City, Utah, USA. susan.thibeault@hsc.utah.edu
The Laryngoscope
|April 6, 2004
Summary
Hyaluronan levels in vocal folds after biopsy peak on day 5, suggesting early therapeutic potential for this molecule in preventing vocal fold scarring and promoting tissue regeneration.
Area of Science:
- Otolaryngology
- Regenerative Medicine
- Biochemistry
Background:
- Vocal fold scarring can result from injury, impacting voice quality.
- Hyaluronan plays a crucial role in tissue repair and regeneration.
- Understanding hyaluronan dynamics post-injury is vital for therapeutic strategies.
Purpose of the Study:
- To quantify hyaluronan levels in vocal folds during the initial 15 days following biopsy in a rabbit model.
- To investigate the temporal changes in hyaluronan concentration after vocal fold injury.
Main Methods:
- Experimental, nonrandomized prospective study involving 28 rabbits.
- Unilateral vocal fold biopsy performed, with the contralateral fold serving as a control.
- Hyaluronan levels measured using immunohistology and ELISA on days 3, 5, 10, and 15 post-biopsy.
Main Results:
- Hyaluronan levels in the injured vocal fold were lowest on day 3 and peaked on day 5.
- Significantly lower hyaluronan levels were observed in the injured fold on days 3, 10, and 15 compared to controls.
- On day 5, injured vocal folds showed significantly higher hyaluronan levels than on other days, with no difference compared to normal folds.
Conclusions:
- Elevated hyaluronan in early wound healing may reduce vocal fold scarring.
- Suboptimal hyaluronan levels might impair tissue regeneration and contribute to scarring.
- Targeting hyaluronan levels presents a potential therapeutic avenue for vocal fold repair.