After myringotomy, can topical Mesna application be an alternative method to ventilation tube application?
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Published on: January 17, 2011
Rifat Karli1, Fatih Ilkaya, Arzu Karli
1Department of Otorhinolaryngology, School of Medicine, Ondokuz Mayis University, Samsun, Turkey, rifatkarli@yahoo.com.
Abstract:
Sodium-2-mercaptoethanesulfonate (Mesna) is a mucolytic substance that is also used for chemically assisted tissue dissection in otological surgery. We investigated the effects of Mesna as a chemical agent on the closing time of perforation of the eardrum in an experimental animal model. We performed simple myringotomy with a knife on 44 tympanic membranes of 22 rats. Four rats were excluded from the study because of serosity in their ears. Rats were divided into two study groups and a control group. These groups were the Mesna-administered group (Group A) (8 rats, 15 tympanic membranes), the saline-administered group (Group B) (8 rats, 14 tympanic membranes) and the control (native) group (6 rats, 11 tympanic membranes) (Group C). We applied Mesna locally for 20 min following myringotomy. Examination was made with an otoendoscope on days 1, 2, 3, 5, and 7, and patency rates were recorded. According to our results, we found that the closing time of the tympanic membrane was significantly longer in the Mesna group than in the saline administrated and native group. After myringotomy procedure, the application of a single dose of Mesna may contribute to the recovery duration of middle-ear pathologies by delaying the closing time of tympanic membrane perforation. However, Mesna cannot be an alternative method for the application of ventilation tubes.
Insights
Sodium-2-mercaptoethanesulfonate (Mesna) delays eardrum perforation healing in rats. This study suggests Mesna application may prolong recovery from middle-ear issues by extending tympanic membrane closure time.
Area of Science:
- Otolaryngology
- Regenerative Medicine
- Biomaterials Science
Background:
- Sodium-2-mercaptoethanesulfonate (Mesna) is recognized for its mucolytic properties and use in chemical tissue dissection during otological surgery.
- Understanding Mesna's impact on tympanic membrane healing is crucial for optimizing otological surgical outcomes.
Purpose of the Study:
- To investigate the effect of Mesna on the healing time of tympanic membrane perforations in an experimental animal model.
- To determine if Mesna influences the rate of eardrum closure following myringotomy.
Main Methods:
- A myringotomy model was created on rat tympanic membranes.
- Rats were divided into three groups: Mesna-administered, saline-administered (control), and native (no treatment).
- Mesna or saline was applied locally post-myringotomy, with healing assessed via otoendoscopy over seven days.
Main Results:
- The study found a significantly longer tympanic membrane closing time in the Mesna-administered group compared to both the saline and native control groups.
- Mesna application was associated with a delay in the resolution of tympanic membrane perforations.
Conclusions:
- Local application of Mesna following myringotomy may prolong the recovery duration of middle-ear pathologies by delaying tympanic membrane perforation closure.
- Mesna is not a suitable alternative for ventilation tube application in managing middle-ear conditions.
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