Document Detail

Treatment of acute vocal fold scar with local injection of basic fibroblast growth factor: a canine study.
MedLine Citation:
PMID:  20082571     Owner:  NLM     Status:  In-Process    
CONCLUSIONS: Results of the current study revealed improved phonation threshold pressure (PTP), normalized mucosal wave amplitude (NMWA), and less contraction of the lamina propria in injured larynges treated with basic fibroblast growth factor (bFGF).
OBJECTIVES: We investigated the effects of local injection of bFGF for treatment of acute vocal fold injury in a canine model.
METHODS: Vocal folds of eight beagles were unilaterally injured by removal of the mucosa under direct laryngoscopy. Four beagles received local injections of bFGF delivered to the scarred vocal fold at 1 month after injury. The remaining four beagles received local injections of saline and served as a sham-treatment group. Larynges were harvested 5 months after treatment and excised larynx experiments were performed to measure PTP, NMWA, and normalized glottal gap (NGG). Histologic staining was performed to evaluate structural changes of the extracellular matrix.
RESULTS: Excised larynx measurements revealed significantly lower PTP and increased NMWA in bFGF-treated vocal fold. Elastica Van Gieson staining revealed less contraction of the bFGF-treated vocal fold. Histologic measurements revealed that the thickness of the lamina propria was significantly greater in the bFGF-treated vocal fold. Alcian blue staining revealed improved restoration of hyaluronic acid in the bFGF-treated vocal fold.
Atsushi Suehiro; Shigeru Hirano; Yo Kishimoto; Bernard Rousseau; Tatsuo Nakamura; Juichi Ito
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta oto-laryngologica     Volume:  130     ISSN:  1651-2251     ISO Abbreviation:  Acta Otolaryngol.     Publication Date:  2010 Jul 
Date Detail:
Created Date:  2010-06-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370354     Medline TA:  Acta Otolaryngol     Country:  England    
Other Details:
Languages:  eng     Pagination:  844-50     Citation Subset:  IM    
Department of Otolaryngology-Head & Neck Surgery, Kyoto University, Japan.
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