Pathogenesis of Reinke's Edema of the Vocal Fold.

Autor: Sato K; Department of Otolaryngology-Head and Neck Surgery, Kurume University School of Medicine, Kurume, Japan., Kurita T; Department of Otolaryngology-Head and Neck Surgery, Kurume University School of Medicine, Kurume, Japan., Sato F; Department of Otolaryngology-Head and Neck Surgery, Kurume University School of Medicine, Kurume, Japan., Sato K; Department of Otolaryngology-Head and Neck Surgery, Kurume University School of Medicine, Kurume, Japan., Chitose SI; Department of Otolaryngology-Head and Neck Surgery, Kurume University School of Medicine, Kurume, Japan., Ono T; Department of Otolaryngology-Head and Neck Surgery, Kurume University School of Medicine, Kurume, Japan., Umeno H; Department of Otolaryngology-Head and Neck Surgery, Kurume University School of Medicine, Kurume, Japan.
Jazyk: angličtina
Zdroj: The Laryngoscope [Laryngoscope] 2024 Apr; Vol. 134 (4), pp. 1785-1791. Date of Electronic Publication: 2023 Sep 29.
DOI: 10.1002/lary.31084
Abstrakt: Objectives: The most frequent etiologic factor of Reinke's edema (RE) is considered to be smoking. However, the mechanism for the onset and development of the disease remains unclear. Hypoxia-inducible factor-1α (HIF-1α) is an oxygen-dependent transcriptional activator which plays crucial roles in angiogenesis in hypoxic microenvironments. HIF-1α induces the expression of vascular endothelial growth factor (VEGF) which involves angiogenesis and enhances vascular permeability. This study investigated the roles of HIF-1α in the pathogenesis of RE.
Methods: Surgical specimens of RE from patients who underwent endolaryngeal microsurgery were used. Normal vocal folds were used as a control group. Expression of HIF-1α and VEGF was analyzed by immunohistochemistry. Three-dimensional fine structures of the vessels in RE were investigated using correlative light and electron microscopy (CLEM) technique.
Results: HIF-1α and VEGF were broadly expressed in the stromal, inflammatory, and endothelial cells in the lamina propria of the vocal fold of RE. The expression of HIF-1α and VEGF of RE were significantly higher than in the lamina propria of the normal vocal fold mucosa. CLEM showed vascularization and telangiectasia and there were many dilated capillaries with thin endothelium not covered with pericytes indicating the vessels were fragile.
Conclusion: Transcription factor HIF-1α and induced VEGF likely play roles in the pathogenesis of RE. And increased vascular permeability with fragile vessels in angiogenesis is likely to be an etiology of RE. Transcription factor HIF-1α and induced VEGF are potential therapeutic targets for RE.
Level of Evidence: NA Laryngoscope, 134:1785-1791, 2024.
(© 2023 The American Laryngological, Rhinological and Otological Society, Inc.)
Databáze: MEDLINE
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