title: Characterization of extracellular matrix proteins during wound healing in the lamina propria of vocal fold in a canine model: a long-term and consecutive study.
abstract: The characterization of vocal fold wound healing can be reflected by the changes of extracellular matrix (ECM) proteins in the lamina propria. Although the expression of ECM proteins after vocal fold injury has been widely studied, such observations have lacked time continuity and integrity of marker proteins. In this study, we observed the morphology of injured vocal folds in a canine model. We used immunofluorescence staining to evaluate the expression and distribution of ECM proteins, such as collagen, elastin, hyaluronic acid, decorin and fibronectin, from 15 days to 6 months after injury. The results showed that large amounts of ECM proteins were secreted 15-40 days after injury. Collagen and fibronectin secretion increased significantly, and were disorderly deposited. The secretion of decorin and elastin increased slightly, while hyaluronic acid decreased. The 15-40 day post-injury period may be the critical intervention stage in wound healing of vocal folds. From 3 to 6 months after injury, the secretion of ECM proteins declined. However, collagen and fibronectin secretion were still significantly higher than normal with irregular arrangement, while the secretion of elastin, hyaluronic acid and decorin decreased significantly at 6 months. This led to vocal fold inelasticity and stiffness, which required effective long-term interventions to treat scar formation.
authors: Department of Otorhinolaryngology, Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China.
authors: Rong
authors: R
authors: Hu
authors: Department of Otorhinolaryngology, Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China.
authors: Wen
authors: W
authors: Xu
authors: Department of Anatomy, Capital Medical University, Beijing 100069, China.
authors: Wei
authors: W
authors: Ling
authors: Department of Neurobiology, Capital Medical University, Beijing 100069, China.
authors: Qi
authors: Q
authors: Wang
authors: Department of Anatomy, Capital Medical University, Beijing 100069, China. Electronic address: yanwu@ccmu.edu.cn.
authors: Yan
authors: Y
authors: Wu
authors: Department of Otorhinolaryngology, Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China. Electronic address: entwen@trhos.com.
authors: Demin
authors: D
authors: Han
mesh_terms: D000328:Adult; D000818:Animals; D002358:Cartilage, Articular / Q000378:metabolism / Q000473:pathology; D020219:Chondrogenesis; D004195:Disease Models, Animal; D004285:Dogs; D016326:Extracellular Matrix Proteins / Q000378:metabolism*; D005434:Flow Cytometry; D005455:Fluorescent Antibody Technique; D006801:Humans; D009092:Mucous Membrane / Q000378:metabolism*; D014827:Vocal Cords / Q000293:injuries* / Q000378:metabolism* / Q000473:pathology; D014945:Wound Healing
chemical_list: D016326:Extracellular Matrix Proteins
keywords: Dog; Extracellular matrix; Immunofluorescence; Morphology; Vocal fold injury; Wound healing