Journals / Türk Otorinolarengoloji Arşivi / 2017 / Cilt: 55 - Sayı: 1

Effect of Topical Dexamethasone for Preventing Experimentally Induced Myringosclerosis

Deneysel Olarak Oluşturulan Miringosklerozun Önlenmesinde Topikal Deksametazonun Etkisi

Pages
3–9
Publication Date
2022-11-05
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Conclusion: Thus, our study results suggest that applying topical dexamethasone after myringotomy has positive effects on limiting the intensity and prevalence of myringosclerosis.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: We aimed to examine the effect of topical dexamethasone by otomicroscopic and histologic examinations for preventing myringosclerosis induced by myringotomy in rat tympanic membranes.
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Key Findings & Data:Methods: Twenty-one Sprague Dawley rats (42 ears) were randomly divided into the following three groups after otomicroscopic examinations: experimental surgical group (5 rats), control group (8 rats), and study group (8 rats).
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Conclusion & Impact:Conclusion: Thus, our study results suggest that applying topical dexamethasone after myringotomy has positive effects on limiting the intensity and prevalence of myringosclerosis.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: We aimed to examine the effect of topical dexamethasone by otomicroscopic and histologic examinations for preventing myringosclerosis induced by myringotomy in rat tympanic membranes. Methods: Twenty-one Sprague Dawley rats (42 ears) were randomly divided into the following three groups after otomicroscopic examinations: experimental surgical group (5 rats), control group (8 rats), and study group (8 rats). The rats of all the groups underwent myringotomy in both tympanic membranes. Other than myringotomy, no additional procedure was performed for the rats in the experimental surgical group. In the control group, 0.9% NaCl was applied to the ears, whereas in the study groups, topical dexamethasone was applied to the ears. These applications in the control and study groups were repeated for nine days. On the 10th day of the study, the rat ears of all groups underwent otomicroscopic and histologic examinations. The prevalence and process of myringosclerosis were evaluated by otomicroscopic examination, whereas inflammation, membrane thickness, and myringosclerosis intensity were evaluated by histologic examination. Results: The growth of myringosclerosis with otomicroscopic examination was lesser in the study group in which topical dexamethasone was applied than the control and experimental surgical groups. Moreover, it was observed that myringosclerosis effected less quadrants in the study group. Histologic examinations revealed that inflammation was significantly lesser in the study group than in the experimental surgical and control groups. The average membrane thickness values were significantly lesser in the study group than in the experimental surgical group. With respect to myringosclerosis growth, no statistically significant difference was observed among all groups, whereas with respect to myringosclerosis intensity, the rat ears in the study group were less severely affected. Conclusion: Thus, our study results suggest that applying topical dexamethasone after myringotomy has positive effects on limiting the intensity and prevalence of myringosclerosis.

Özet

Amaç: Deneysel olarak sıçan timpanik membranlarında miringotomi ile oluşturulan miringosklerozun önlenmesinde, topikal deksametazonun etkinliğini otomikroskopik ve histolojik muayeneler ile araştırmayı amaçladık. Yöntemler: Sprague-Dawley cinsi 21 sıçan (42 kulak) otomikroskopik muayeneler sonrası rastgele üç gruba [deneysel cerrahi grubu (beş sıçan), kontrol grubu (8 sıçan), çalışma grubu (8 sıçan)] ayrıldı. Tüm gruplardaki sıçanların her iki timpanik membranlarına miringotomi yapıldı. Miringotomi sonrası deney grubundaki sıçan kulaklarına ek işlem yapılmadı. Deneysel cerrahi grubundaki kulaklara %0.9 NaCl, çalışma ve kontrol grubundaki kulaklara ise topikal olarak deksametazon uygulandı. Kontrol ve çalışma gruplarındaki uygulama dokuz gün boyunca tekrarlandı. Çalışmanın 10. gününde tüm gruplardaki kulaklar otomikroskopik ve histolojik olarak değerlendirildi. Otomikroskopik değerlendirmede miringoskleroz gelişimi ve yaygınlığı, histolojik incelemede ise; inflamasyon, zar kalınlığı ve miringoskleroz şiddeti değerlendirildi. Bulgular: Çalışmamızda topikal deksametazon uygulanan çalışma grubunda, kontrol ve deney gruplarına göre otomikroskopik olarak miringoskleroz gelişiminin daha az olduğu saptandı. Ayrıca, çalışma grubunda miringosklerozun daha az kadranı etkilediği görüldü. Histolojik olarak incelemede, inflamasyon varlığı çalışma grubunda, deneysel cerrahi ve kontrol gruplarına göre anlamlı olarak daha az görüldü. Ortalama zar kalınlığı değerleri çalışma grubunda deneysel cerrahi grubuna göre anlamlı olarak düşüktü. Miringoskleroz gelişimi yönünden gruplar arasında istatistiksel anlamlı fark saptanmaz iken, miringoskleroz şiddeti yönünden çalışma grubundaki sıçan kulaklarının daha hafif etkilendiği saptandı. Sonuç: Çalışmamızın bulguları ışığında miringotomi sonrası topikal deksametazon uygulamasının miringosklerozun şiddeti ve yaygınlığını sınırlamada olumlu etkisi olacağını ileri sürebiliriz.

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Cite This Article

ALTANER, Ş., YAĞIZ, R., TAŞ, A., BULUT, E., KOÇYİĞİT, M., ÜSTÜNDAĞ, M. (2022). Effect of Topical Dexamethasone for Preventing Experimentally Induced Myringosclerosis. Türk Otorinolarengoloji Arşivi, Cilt: 55 - Sayı: 1, 3–9. https://ajindex.com/articles/640245

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