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Kimura A, Khan MI, Easwaran M, Soo J, Golchin A, Erickson-DiRenzo E. Establishing a Mouse Model of Surgical Vocal Fold Injury. Laryngoscope 2024. [PMID: 39180435 DOI: 10.1002/lary.31732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 07/15/2024] [Accepted: 08/02/2024] [Indexed: 08/26/2024]
Abstract
OBJECTIVE Animal models of vocal fold (VF) surgical injury and scar formation provide insight into the wound healing process. The purpose of this study was to establish an alternative model of surgical injury to the mouse VF using materials commonly available in most research laboratories or for purchase and to investigate wound healing of the epithelium (EP) and lamina propria (LP). METHODS Mice were anesthetized by isoflurane gas delivery and positioned on a platform so that the larynx could be observed using a laryngoscope and dissection microscope. Unilateral VF injury was created using a wire brush. Mice were euthanized and the larynx evaluated 1-, 3-, 5-, 7-, 14-, and 28-days following injury. Histological and immunofluorescent analysis was used to evaluate thickness of the EP, LP area, proliferative (Ki67+) and basal cells (p63+) in the EP, and collagen III content in the LP. RESULTS The depth of injury reached the superficial thyroarytenoid muscle on Day 1. The thickness of the EP of the injured VF was increased on Days 3 and 5, and the LP area was increased on Days 3, 5, and 7 as compared with the uninjured VF. Ki67+ and p63+ cells were increased on Day 3 and collagen III content was increased on Days 5 and 28 as compared with the uninjured VF. CONCLUSION We successfully established an alternative method of creating unilateral VF injury in the mouse. This method will be useful for future research regarding VF surgical injury and wound healing. LEVEL OF EVIDENCE N/A Laryngoscope, 2024.
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Affiliation(s)
- Akari Kimura
- Department of Otolaryngology - Head & Neck surgery, School of Medicine, Stanford University, Stanford, California, USA
| | - Mohammed Imran Khan
- Department of Otolaryngology - Head & Neck surgery, School of Medicine, Stanford University, Stanford, California, USA
| | - Meena Easwaran
- Department of Otolaryngology - Head & Neck surgery, School of Medicine, Stanford University, Stanford, California, USA
| | - Joanne Soo
- Department of Otolaryngology - Head & Neck surgery, School of Medicine, Stanford University, Stanford, California, USA
| | - Amirbahador Golchin
- Department of Otolaryngology - Head & Neck surgery, School of Medicine, Stanford University, Stanford, California, USA
| | - Elizabeth Erickson-DiRenzo
- Department of Otolaryngology - Head & Neck surgery, School of Medicine, Stanford University, Stanford, California, USA
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Hamilton NJI, Tait A, Weil B, Daniels J. The Use of a Dehydrated Cellularized Collagen Matrix to Replace Fibrotic Vocal Fold Mucosa. Laryngoscope 2024; 134:882-893. [PMID: 37681762 DOI: 10.1002/lary.31034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/01/2023] [Accepted: 08/07/2023] [Indexed: 09/09/2023]
Abstract
OBJECTIVES Fibrosis of the vocal fold lamina propria reduces vocal cord vibration resulting in a chronically hoarse voice. We describe a novel approach using umbilical cord-derived mesenchymal stem cells in a dehydrated collagen matrix (cellogen) to reconstruct the delicate balance of extracellular matrix within the vocal fold lamina propria whilst limiting the host inflammatory response to the implant. METHODS Human umbilical cord-derived mesenchymal stem-cells were embedded in bovine type I collagen hydrogel and dehydrated using the RAFT™ 3D culture system. The extracellular matrix, cellular viability and composition, paracrine profile, and genomic profile were assessed and the scaffold engrafted onto the hind muscle of NUDE mice. RESULTS The cells retained stem-cell markers following fabrication and secreted collagen III, fibronectin, and glycosaminoglycans within the scaffold. Electron microscopy showed the scaffold consisted of single strands of protein with interspersed bundles of a similar size to native vocal fold lamina propria. The use of the dehydration step improved cell viability and upregulated the expression of genes important in wound healing and matrix organization compared with unmodified collagen hydrogel carriers. The cells were shown to secrete exosomes and cytokines and, following engraftment within an immunocompromised mouse model, appeared to modulate the host inflammatory response compared with controls. CONCLUSION This article provides a scalable cell-protein scaffold that with further modifications could provide a replacement for lost or damaged vocal fold mucosa. Further investigations are required to assess the mechanical properties of the scaffold and inhibit the differentiation of the umbilical cord-derived stem-cells following implantation. Laryngoscope, 134:882-893, 2024.
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Affiliation(s)
- Nick J I Hamilton
- Head & Neck Academic Centre, UCL Division of Surgery and Interventional Sciences, University College London, London, UK
- Royal National Ear Nose & Throat Hospital, University College London Hospitals NHS Trust, London, UK
| | - Angela Tait
- Centre for Cell, Gene & Tissue Therapy, Royal Free London NHS Foundation Trust, London, UK
| | - Ben Weil
- Centre for Cell, Gene & Tissue Therapy, Royal Free London NHS Foundation Trust, London, UK
| | - Julie Daniels
- Cells for Sight, Institute of Ophthalmology, University College London, London, UK
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Wang H, Xu W. A Promotion Role of MIR31 in the Process of Vocal Fold Wound Healing. PPAR Res 2023; 2023:4672827. [PMID: 37588448 PMCID: PMC10427237 DOI: 10.1155/2023/4672827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/16/2023] [Accepted: 07/28/2023] [Indexed: 08/18/2023] Open
Abstract
The role of MIR31 in the wound healing process, specifically in vocal fold wound healing (VFWH), remains uncertain despite its potential to facilitate the process. In this study, we first constructed a literature-based pathway to examine both the positive and negative effects of MIR31 on wound healing. We then conducted animal experiments on 20 rats to investigate MIR31 expression at different time points (1, 4, and 8 weeks) after vocal fold injury. Co-expression analysis and pathway analysis were performed to explore the potential function of MIR31 in VFWH. The literature-based pathway suggested that MIR31 could both impede and promote the wound healing process by regulating 14 and 47 wound healing upstream regulators, respectively. However, the rat experiment indicated that MIR31 expression significantly increased after vocal fold injury (p < 5.65 × 10-5) but decreased in the late stage of VFWH compared with the early and middle stages (p < 5.40 × 10-3. Strong co-expression was observed between MIR31 and 17 VFWH-significant genes (Pearson correlation coefficient ∈ (0.63, 0.83)), primarily involved in collagen production. Overall, our findings suggest that MIR31 plays a critical role in VFWH, particularly in collagen synthesis and other biological processes, which warrant further investigation.
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Affiliation(s)
- Haizhou Wang
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Key Laboratory of Otolaryngology-Head and Neck Surgery, Ministry of Education of China, Beijing, China
| | - Wen Xu
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Key Laboratory of Otolaryngology-Head and Neck Surgery, Ministry of Education of China, Beijing, China
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Zhang C, Pang W, Gong T, Jiang JJ, Silverman M, Li G. 5-Aminolevulinic Acid-Mediated Photodynamic Therapy Improves Vocal Fold Wound Healing in Rats. Laryngoscope 2023; 133:1943-1951. [PMID: 36278803 DOI: 10.1002/lary.30427] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/14/2022] [Accepted: 09/22/2022] [Indexed: 07/20/2023]
Abstract
OBJECTIVE Studies showed that photodynamic therapy (PDT) might be able to prevent vocal fold scar formation when treating laryngeal lesions. We aim to investigate if PDT improves vocal wound healing and reduces scar formation in both prophylactic and remodeling procedures performed in vivo. STUDY DESIGN In vivo. METHODS Vocal fold stripping was performed in Sprague-Dawley rats. PDT was performed with intraperitoneal injection of 100 mg/kg 5-Aminolevulinic Acid (5-ALA) and 635 nm laser irradiation of 20, 40, and 60 J/cm2 . PDT was performed immediately after surgery to study the prophylactic effect and 4 weeks after surgery to study the remodeling effect. Gene expression was evaluated with real-time PCR at 1 week after PDT. Histologic evaluations were performed 12 weeks after PDT, including hematoxylin-eosin, Masson, Alcian blue staining, and immunohistochemical staining of collagen I and III. RESULTS PDT induced similar effects on the vocal fold wound healing outcomes in both prophylactic and remodeling procedures. Expression of MMP8, MMP13, HAS2, and TGFβ1 was significantly elevated. Histologic evaluation revealed significantly increased thickness, decreased density of collagen, and increased deposition of hyaluronic acid in the lamina propria. Immunohistochemistry also revealed better distribution and reduced density of collagen I and III. The most obvious changes were seen in the 60 J/cm2 PDT group. CONCLUSION PDT could significantly improve vocal wound healing by providing both prophylactic effects and remodeling effects. It may be a minimally invasive treatment for vocal fold lesions with slight vocal scarring, and may be used to treat acute or chronic vocal injury to reduce vocal scarring. LEVEL OF EVIDENCE N/A Laryngoscope, 133:1943-1951, 2023.
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Affiliation(s)
- Chi Zhang
- From the Department of Otolaryngology-Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, People's Republic of China
- The Department of Otolaryngology-Head and Neck Surgery, Eye, Ear, Nose, and Throat Hospital of Fudan University, Shanghai, People's Republic of China
| | - Wenting Pang
- From the Department of Otolaryngology-Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Ting Gong
- The Department of Otolaryngology-Head and Neck Surgery, Eye, Ear, Nose, and Throat Hospital of Fudan University, Shanghai, People's Republic of China
| | - Jack J Jiang
- Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Matthew Silverman
- Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Gelin Li
- From the Department of Otolaryngology-Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, People's Republic of China
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Li X, Hu R, Wang H, Xu W. SOCS3 Silencing Promotes Activation of Vocal Fold Fibroblasts via JAK2/STAT3 Signaling Pathway. Inflammation 2023:10.1007/s10753-023-01810-9. [PMID: 37154979 DOI: 10.1007/s10753-023-01810-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 03/14/2023] [Accepted: 03/26/2023] [Indexed: 05/10/2023]
Abstract
Suppressor of cytokine signaling 3 (SOCS3) is a negative regulatory protein that has been identified as a key inhibitory regulator of JAK/STAT signaling pathway. However, the mutual regulatory relationship between SOCS3 and JAK2/STAT3 signaling pathway after vocal fold injury remains unclear. In this study, we used small interfering RNA (siRNA) to investigate the mechanism of SOCS3 regulating of fibroblasts through JAK2/STAT3 signaling pathway after vocal fold injury. Our data shows that SOCS3 silencing promotes the transformation of normal vocal fold fibroblasts (VFFs) into an fibrotic phenotype and activates the JAK2/STAT3 signaling pathway. JAK2 silencing significantly inhibits the increase in type I collagen and α-smooth muscle actin (α-SMA) secretion in VFFs induced by TGF-β but has no significant effect on normal VFFs. The silencing of SOCS3 and JAK2 reverses the fibrotic phenotype of VFFs induced by SOCS3 silencing. Therefore, we suggest that SOCS3 can affect the activation of vocal fold fibroblasts by regulating the JAK2/STAT3 signaling pathway after vocal fold injury. It provides a new insight for promoting the repair of vocal fold injury and preventing the formation of fibrosis.
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Affiliation(s)
- Xueyan Li
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology-Head and Neck Surgery, Ministry of Education of China, 1 Dongjiaominxiang, 100730, Beijing, China
| | - Rong Hu
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology-Head and Neck Surgery, Ministry of Education of China, 1 Dongjiaominxiang, 100730, Beijing, China
| | - Haizhou Wang
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology-Head and Neck Surgery, Ministry of Education of China, 1 Dongjiaominxiang, 100730, Beijing, China
| | - Wen Xu
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology-Head and Neck Surgery, Ministry of Education of China, 1 Dongjiaominxiang, 100730, Beijing, China.
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Hamilton NJI. The life-cycle and restoration of the human vocal fold. Laryngoscope Investig Otolaryngol 2023; 8:168-176. [PMID: 36846403 PMCID: PMC9948577 DOI: 10.1002/lio2.993] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 10/20/2022] [Accepted: 11/30/2022] [Indexed: 12/23/2022] Open
Abstract
Objective To better understand the challenges of designing therapies to treat damaged vocal fold lamina propria, it is essential to understand the biophysical and pathophysiological mechanisms involved in vocal fold development, maintenance, injury, and aging. This review critically analyses these points to try and direct future efforts and new strategies toward science-based solutions. Data Sources & Review Methods MEDLINE, Ovid Embase, and Wed of Science databases were used to identify relevant literature. A scoping review was performed following the preferred reporting items for systematic reviews and meta-analyses extension for scoping reviews checklist. Results The layered arrangement of the vocal fold, develops during early childhood and is maintained during adulthood unless injury occurs. The stellate cells of the macular flava are likely to be important in this process. The capacity for vocal fold regeneration and growth is lost during adulthood and repair results in the deposition of fibrous tissue from resident fibroblasts. With advancing age, viscoelastic tissue declines, possibly due to cell senescence. Strategies aimed at replacing fibrous tissue within the vocal folds must either stimulate resident cells or implant new cells to secrete healthy extracellular protein. Injection of basic fibroblast growth factor is the most widely reported therapy that aims to achieve this. Conclusions The pathways involved in vocal fold development, maintenance and aging are incompletely understood. Improved understanding has the potential to identify new treatment targets that could potentially overcome loss of vocal fold vibratory tissue.
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Affiliation(s)
- Nick J. I. Hamilton
- Head & Neck Academic Centre, UCL Division of Surgery and Interventional SciencesUniversity College LondonLondonUK
- Department of LaryngologyThe Royal National Ear Nose & Throat hospital (University College London Hospitals NHS Trust)LondonUK
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Effect of SOCS3 on vocal fold fibroblast activation by regulating the JAK2/STAT3 signalling pathway. Tissue Cell 2022; 79:101965. [DOI: 10.1016/j.tice.2022.101965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 10/24/2022] [Accepted: 10/29/2022] [Indexed: 11/12/2022]
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Song J, Gao H, Zhang H, George OJ, Hillman AS, Fox JM, Jia X. Matrix Adhesiveness Regulates Myofibroblast Differentiation from Vocal Fold Fibroblasts in a Bio-orthogonally Cross-linked Hydrogel. ACS APPLIED MATERIALS & INTERFACES 2022; 14:51669-51682. [PMID: 36367478 PMCID: PMC10350853 DOI: 10.1021/acsami.2c13852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Repeated mechanical and chemical insults cause an irreversible alteration of extracellular matrix (ECM) composition and properties, giving rise to vocal fold scarring that is refractory to treatment. Although it is well known that fibroblast activation to myofibroblast is the key to the development of the pathology, the lack of a physiologically relevant in vitro model of vocal folds impedes mechanistic investigations on how ECM cues promote myofibroblast differentiation. Herein, we describe a bio-orthogonally cross-linked hydrogel platform that recapitulates the alteration of matrix adhesiveness due to enhanced fibronectin deposition when vocal fold wound healing is initiated. The synthetic ECM (sECM) was established via the cycloaddition reaction of tetrazine (Tz) with slow (norbornene, Nb)- and fast (trans-cyclooctene, TCO)-reacting dienophiles. The relatively slow Tz-Nb ligation allowed the establishment of the covalent hydrogel network for 3D cell encapsulation, while the rapid and efficient Tz-TCO reaction enabled precise conjugation of the cell-adhesive RGDSP peptide in the hydrogel network. To mimic the dynamic changes of ECM composition during wound healing, RGDSP was conjugated to cell-laden hydrogel constructs via a diffusion-controlled bioorthognal ligation method 3 days post encapsulation. At a low RGDSP concentration (0.2 mM), fibroblasts residing in the hydrogel remained quiescent when maintained in transforming growth factor beta 1 (TGF-β1)-conditioned media. However, at a high concentration (2 mM), RGDSP potentiated TGF-β1-induced myofibroblast differentiation, as evidenced by the formation of an actin cytoskeleton network, including F-actin and alpha-smooth muscle actin. The RGDSP-driven fibroblast activation to myofibroblast was accompanied with an increase in the expression of wound healing-related genes, the secretion of profibrotic cytokines, and matrix contraction required for tissue remodeling. This work represents the first step toward the establishment of a 3D hydrogel-based cellular model for studying myofibroblast differentiation in a defined niche associated with vocal fold scarring.
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Affiliation(s)
- Jiyeon Song
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware, USA
| | - Hanyuan Gao
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware, USA
| | - He Zhang
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware, USA
| | - Olivia J. George
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware, USA
| | - Ashlyn S. Hillman
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware, USA
| | - Joseph. M. Fox
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware, USA
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware, USA
| | - Xinqiao Jia
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware, USA
- Department of Biomedical Engineering, University of Delaware, Newark, Delaware, USA
- Delaware Biotechnology Institute, 590 Avenue 1743, Newark, Delaware, USA
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Prolactin may serve as a regulator to promote vocal fold wound healing. Biosci Rep 2020; 40:225799. [PMID: 32667625 PMCID: PMC7376669 DOI: 10.1042/bsr20200467] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 06/18/2020] [Accepted: 07/14/2020] [Indexed: 12/02/2022] Open
Abstract
Reduced prolactin (PRL) has been shown to delay wound healing with a limited understanding of the underlying mechanisms. Here, we aim to explore the role of PRL in the repair of vocal fold (VF) injury. A microarray was used to detect the expressed levels of PRL in rat VF tissue at 1, 4, and 8 weeks after VF injury compared with normal uninjured rats. Then, a systematic bioinformatics analysis has been conducted to explore the literature-based biology network and signaling pathways involved in the repair of VF injury. The expression of PRL was significantly decreased in all VF injury groups (week 1, 4, and 8) compared with the control group (F stats = 280.34; P=4.88e-14), with no significant difference among the three VF injury groups (F stats = 1.97; P=0.18). Wounding has been shown to interfere with both PRL-promoting and inhibiting pathways that were involved in wound healing, including 11 PRL inhibitors and 6 PRL promoters. Our results reveal decreased PRL expression levels in VF injury, which is not in favor of the wound healing. The pathways identified may help in understanding the role of PRL as a treatment target for VF wound healing.
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Alicura Tokgöz S, Saka C, Akın İ, Köybaşıoğlu F, Kılıçaslan S, Çalışkan M, Beşaltı Ö, Çadallı Tatar E. Effects of phenytoin injection on vocal cord healing after mechanical trauma: An experimental study. Turk J Med Sci 2019; 49:1577-1581. [PMID: 31652040 PMCID: PMC7018381 DOI: 10.3906/sag-1903-63] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 07/17/2019] [Indexed: 11/24/2022] Open
Abstract
Background/aim Phenytoin is an anticonvulsant drug which causes fibroblast proliferation, collagen synthesis, and an increase in epidermal growth factor. Therefore, the aim of the present study is to evaluate the effect of phenytoin injection on the wound healing process in rats with vocal cord injury by histopathological methods. Materials and methods The vocal cords of 10 albino Wistar rats were damaged bilaterally; the left vocal cord was kept as the control group. Phenytoin was injected in the right vocal cord. Ten rats were sacrificed. The thickness of the lamina propria and density of the fibroblast and collagen were evaluated histopathologically. Results Thickness of the lamina propria was 18.0 ± 7.1 µm in the control group, 65.5 ± 10.7 µm in the phenytoin group. The density of fibroblast and collagen were statistically lower in the control group compared the phenytoin group (P < 0.05). Conclusion Phenytoin injection in rats after vocal cord injury significantly increased the thickness of the lamina propria and density of fibroblast and regular and mature collagen in the lamina propria. The findings in our study provide a feasible scientific view for adding phenytoin treatment to vocal cord surgeries in otolaryngology practice, but further studies are needed in order to evaluate the use of phenytoin in preventing the formation of scar tissue and possible effects on vocal cord vibration in humans after vocal cord injury.
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Affiliation(s)
- Sibel Alicura Tokgöz
- Department of Otorhinolaryngology, University of Health Sciences Dışkapı Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey
| | - Cem Saka
- Department of Otorhinolaryngology, University of Health Sciences Dışkapı Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey
| | - İstemihan Akın
- Department of Otorhinolaryngology, University of Health Sciences Dışkapı Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey
| | - Fulya Köybaşıoğlu
- Department of Pathology, Faculty of Medicine, Yüksek İhtisas University, Ankara, Turkey
| | - Saffet Kılıçaslan
- Department of Otorhinolaryngology, Düzce Atatürk State Hospital, Düzce, Turkey
| | - Murat Çalışkan
- Department of Surgery, Faculty of Veterinary Medicine, Ankara University, Ankara, Turkey
| | - Ömer Beşaltı
- Department of Surgery, Faculty of Veterinary Medicine, Ankara University, Ankara, Turkey
| | - Emel Çadallı Tatar
- Department of Otorhinolaryngology, University of Health Sciences Dışkapı Yıldırım Beyazıt Training and Research Hospital, Ankara, Turkey
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Lee YJ, Baek SE, Lee S, Cho YW, Jeong YJ, Kim KJ, Jun YJ, Rhie JW. Wound-healing effect of adipose stem cell-derived extracellular matrix sheet on full-thickness skin defect rat model: Histological and immunohistochemical study. Int Wound J 2018; 16:286-296. [PMID: 30461211 DOI: 10.1111/iwj.13030] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 10/04/2018] [Accepted: 10/09/2018] [Indexed: 12/19/2022] Open
Abstract
The potential use of extracellular matrix (ECM) as a source of wound dressing material has recently received much attention. The ECM is an intricate network of various combinations of elastin, collagens, laminin, fibronectin, and proteoglycans that play a key role in stimulating cell proliferation and differentiation. We evaluated the efficacy of an ECM sheet derived from human adipose tissue as a wound dressing material to enhance healing. We prepared a novel porous ECM sheet dressing scaffold from human adipose tissue. in vitro analysis of the ECM sheets showed efficient decellularisation; absence of immunostimulatory components; and the presence of a wide number of angiogenic and bioactive factors, including collagen, elastin, and proteoglycans. To evaluate in vivo efficacy, full-thickness excisional wounds were created on the dorsal skin of a rat, and the ECM sheets; secondary healing foam wound dressing, Healoderm; or a conventional dressing were applied to each wound site. Photographs were taken every other day, and the degree of reepithelialisation of the wounds was determined. Application of an ECM sheet dressing enhanced the macroscopic wound-healing rate on days 4, 7, and 10 compared with that in the control group. Microscopic analysis indicated that the reepithelialisation rate of the wound was higher in the ECM group compared with that in the control group; the reepithelialisation rate was better than that of the secondary healing foam wound dressing. Moreover, a denser and more organised granulation tissue was formed in the ECM sheet group compared with that in the secondary healing foam wound dressing and control groups. The ECM sheet also showed the highest microvessel density compared with the secondary healing foam wound dressing and control groups. Based on these data, we suggest that a bioactive ECM sheet dressing derived from human adipose can provide therapeutic proteins for wound healing.
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Affiliation(s)
- Yoon J Lee
- Department of Plastic and Reconstructive Surgery, Yeouido St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seung E Baek
- Department of Plastic and Reconstructive Surgery, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sujin Lee
- Department of Plastic and Reconstructive Surgery, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yong W Cho
- Department of Bionanotechnology, Hanyang University, Ansan, Korea
| | - Yeon J Jeong
- Department of Plastic and Reconstructive Surgery, Yeouido St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Ki J Kim
- Department of Plastic and Reconstructive Surgery, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Young J Jun
- Department of Plastic and Reconstructive Surgery, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jong W Rhie
- Department of Plastic and Reconstructive Surgery, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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12
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Li J, Liu Y, Wang Y, Xu W. Expression of tenascin-C in a rat vocal fold injury model and its regulation of fibroblasts. Laryngoscope 2018; 128:E316-E322. [PMID: 29572861 DOI: 10.1002/lary.27164] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 01/14/2018] [Accepted: 02/12/2018] [Indexed: 01/07/2023]
Abstract
OBJECTIVES/HYPOTHESIS Tenascin-C (Tnc) is an extracellular matrix (ECM) glycoprotein that plays a vital role in wound healing and fibrotic disease. Tnc is highly upregulated soon after vocal fold injury, but its function in the vocal fold has not yet been defined. In this study, we investigated Tnc expression in a rat vocal fold injury model in vivo and its roles in fibroblasts in vitro. STUDY DESIGN In vivo and in vitro. METHODS Tnc mRNA and protein expression levels were quantified on days 3, 7, 14, 28, and 56 after vocal fold injury in Sprague-Dawley rats. In vitro, immunocytochemistry, Western blot, and quantitative real-time polymerase chain reaction (qRT-PCR) analyses were performed in primary rat vocal fold fibroblasts following Tnc or transforming growth factor (TGF)-β1 stimulation to investigate the phenotypic effects. RESULTS Tnc mRNA and protein expression was upregulated dramatically on days 3 and 7 after injury, and significant differences were observed by qRT-PCR (P < .01). In vitro, Tnc significantly stimulated the migration of primary vocal fold fibroblasts. Following incubation with Tnc for 72 hours, α-smooth muscle actin, collagen I, and fibronectin expression was significantly upregulated (P < .05). TGF-β1 increased Tnc expression in a time-dependent manner, and a mothers against decapentaplegic homolog 3 (SMAD3) inhibitor attenuated this TGF-β1-induced stimulation. CONCLUSIONS Tnc was highly upregulated during the early postinjury period in vivo and promoted vocal fold fibroblast migration, transdifferentiation, and ECM protein synthesis in vitro. Tnc was induced by TGF-β1 in a SMAD3-dependent manner. Transient expression of Tnc is likely to promote regeneration, but its potential role in fibrosis requires further study. LEVEL OF EVIDENCE NA Laryngoscope, 128:E316-E322, 2018.
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Affiliation(s)
- Juan Li
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology-Head and Neck Surgery, Ministry of Education of China, Beijing, China
| | - Yiqiong Liu
- State Key Laboratory of Biomembrane and Membrane Biotechnology, College of Life Sciences, PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, China
| | - Yiming Wang
- State Key Laboratory of Biomembrane and Membrane Biotechnology, College of Life Sciences, PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, China
| | - Wen Xu
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology-Head and Neck Surgery, Ministry of Education of China, Beijing, China
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13
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Wrona EA, Peng R, Amin MR, Branski RC, Freytes DO. Extracellular Matrix for Vocal Fold Lamina Propria Replacement: A Review. TISSUE ENGINEERING PART B-REVIEWS 2016; 22:421-429. [PMID: 27316784 DOI: 10.1089/ten.teb.2016.0015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The vocal folds (VFs) are exposed to a number of injurious stimuli that frequently lead to aberrant structural alterations and altered biomechanical properties that clinically manifest as voice disorders. Therapies to restore both structure and function of this delicate tissue are ideal. However, such methods have not been adequately developed. Our group and others hypothesize that tissue engineering and regenerative medicine approaches, previously described for other tissue systems, hold significant promise for the VFs. In this review, we explore the concept of tissue engineering as it relates to the VFs, as well as recent studies employing both naturally and synthetically derived biomaterials, including those from laryngeal and nonlaryngeal sources, in combination with stem cells for a tissue-engineered approach to VF repair.
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Affiliation(s)
- Emily A Wrona
- 1 UNC-Chapel Hill/NCSU Joint Department of Biomedical Engineering, North Carolina State University , Raleigh, North Carolina.,2 The New York Stem Cell Foundation Research Institute , New York, New York
| | - Robert Peng
- 3 Department of Otolaryngology-Head and Neck Surgery, NYU Voice Center, New York University School of Medicine , New York, New York
| | - Milan R Amin
- 3 Department of Otolaryngology-Head and Neck Surgery, NYU Voice Center, New York University School of Medicine , New York, New York
| | - Ryan C Branski
- 3 Department of Otolaryngology-Head and Neck Surgery, NYU Voice Center, New York University School of Medicine , New York, New York
| | - Donald O Freytes
- 1 UNC-Chapel Hill/NCSU Joint Department of Biomedical Engineering, North Carolina State University , Raleigh, North Carolina.,2 The New York Stem Cell Foundation Research Institute , New York, New York
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14
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King SN, Guille J, Thibeault SL. Characterization of the Leukocyte Response in Acute Vocal Fold Injury. PLoS One 2015; 10:e0139260. [PMID: 26430970 PMCID: PMC4591973 DOI: 10.1371/journal.pone.0139260] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 09/10/2015] [Indexed: 11/23/2022] Open
Abstract
Macrophages location in the superficial layer of the vocal fold (VF) is not only at the first line of defense, but in a place of physiologic importance to voice quality. This study characterizes and compares macrophage function in two models of acute injury. Porcine VF injuries were created bilaterally by either surgical biopsy or lipopolysaccharide (LPS) (1.5μg/kg) injection. Animals were sacrificed at 1- or 5-day post LPS or 3-, 7-, or 23-days post-surgical injury (n = 3/time/ injury). Flow cytometry characterized immunophenotypes and RT-PCR quantified cytokine gene expression. Uninjured VF were used as controls. Post-surgical and LPS injury, SWC9+/SWC3- cells identified as hi SLA-DR+ (p<0.05) compared to controls along with hi CD16+ expression at 1-day and 3-days respectively compared to all other time points (p<0.05). Surgical injuries, SWC9+/SWC3- cells exhibited hi CD163+ (p<0.05) at 3-days along with upregulation in TNFα and TGFβ1 mRNA compared to 23-days (p<0.05). No measurable changes to IL–12, IFNγ, IL–10, IL–4 mRNA post-surgery. LPS injuries induced upregulation of TNFα, IL–12, IFNγ, IL–10, and IL–4 mRNA at 1- and 5-days compared to controls (p<0.05). Higher levels of IL–10 mRNA were found 1-day post-LPS compared to 5-days (p<0.05). No changes to CD163 or CD80/86 post-LPS were measured. Acute VF injuries revealed a paradigm of markers that appear to associate with each injury. LPS induced a regulatory phenotype indicated by prominent IL–10 mRNA expression. Surgical injury elicited a complex phenotype with early TNFα mRNA and CD163+ and persistent TGFβ1 transcript expression.
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Affiliation(s)
- Suzanne N. King
- Department of Neurological Surgery, Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, Kentucky, United States of America
| | - Jeremy Guille
- Department of ENT and Head and Neck Surgery, University Hospital of Pointe Pitre, French West Indies, Pointe Pitre, Guadeloupe
| | - Susan L. Thibeault
- Division of Otolaryngology – Head and Neck Surgery, Department of Surgery, University of Wisconsin-Madison, Madison, WI, United States of America
- * E-mail:
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15
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The unsolved chapter of vocal fold scars and how tissue engineering could help us solve the problem. Eur Arch Otorhinolaryngol 2015; 273:2279-84. [PMID: 26108198 DOI: 10.1007/s00405-015-3668-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 05/22/2015] [Indexed: 01/04/2023]
Abstract
Vocal fold scarring is a relatively small field in scar research with prerequisites found nowhere else. The deterioration of the delicate tri-layered micro-structure of the epithelium of the vocal folds leads to impaired vibration characteristics resulting in a permanent hoarse and breathy voice. Tissue engineering approaches could help to restore the pre-injury status. Despite a considerable progress in this field during the last years, routine clinical applications are not available so far. One reason might be that vocal fold fibroblasts, as the responsible cell type for fibrogenesis, have very particular properties that are only poorly characterized. Moreover, in vivo trials are costly and time consuming and a representative in vitro model does not exist so far. These particular circumstances lead to innovative in vitro strategies and concepts such as macro-molecular crowding that can also be applied in adjacent fields.
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16
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Hoffman MR, Glab R, Gunderson M, Maytag AL, Yang DT, Jiang JJ, Dailey SH. Functional and Histological Evaluation following Canine Vocal Fold Reconstruction Using Composite Thyroid Ala Perichondrium Flaps. Otolaryngol Head Neck Surg 2015; 153:79-87. [PMID: 25883099 DOI: 10.1177/0194599815578824] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Accepted: 03/04/2015] [Indexed: 12/14/2022]
Abstract
OBJECTIVES/HYPOTHESES We evaluated the effects of vocal fold reconstruction using a composite thyroid ala perichondrium flap (CTAP) after unilateral vocal fold stripping in beagles. We hypothesized that CTAP would improve glottic closure, decrease phonation threshold pressure, and decrease perturbation. In addition, vocal folds with CTAP would exhibit neovascularization and fat with increased von Willebrand factor (vWF) and smooth muscle actin (SMA), reflecting neoangiogenesis and flap viability. STUDY DESIGN Randomized controlled trial using beagles. SETTING University laboratory. METHODS Ten beagles underwent unilateral vocal fold stripping. Dogs in the scar-only group (n = 5) were sacrificed at 1 month. Dogs in the CTAP group (n = 5) underwent ipsilateral reconstruction with CTAP at 1 month and were sacrificed at 2 months. Excised larynx experiments evaluated vocal fold vibration using aerodynamic, acoustic, and mucosal wave measurements. Qualitative evaluation of vocal fold morphology and quantitative analysis of elastin, collagen, glycosaminoglycans, vWF, SMA, and hyaluronic acid were performed. RESULTS Phonation threshold pressure (P = .005), percent jitter (P = .010), percent shimmer (P = .007), and open quotient (P = .007) were lower in the CTAP group. Neovascularization (P = .0079) and fat (P = .1667) occurred more with CTAP, although the difference in fat was not significant. von Willebrand factor was higher with CTAP vs contralateral normal fold (P = .110), although not statistically significant. Smooth muscle actin was higher with CTAP vs contralateral normal fold (P = .038) and scarred vocal folds (P = .022). CONCLUSIONS Composite thyroid ala perichondrium flap restored glottic closure and vibratory periodicity following vocal fold scarring. Additional investigation on biologic response is warranted. Composite thyroid ala perichondrium flap offers an autologous, vascularized implant that can improve both vocal fold structure and function.
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Affiliation(s)
- Matthew R Hoffman
- Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Rachel Glab
- Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - McLean Gunderson
- Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Allison L Maytag
- Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - David T Yang
- Department of Pathology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Jack J Jiang
- Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
| | - Seth H Dailey
- Department of Surgery, Division of Otolaryngology-Head and Neck Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
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