title: After myringotomy, can topical Mesna application be an alternative method to ventilation tube application?
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.
authors: Department of Otorhinolaryngology, School of Medicine, Ondokuz Mayis University, Samsun, Turkey, rifatkarli@yahoo.com.
authors: Rifat
authors: R
authors: Karli
authors: Fatih
authors: F
authors: Ilkaya
authors: Arzu
authors: A
authors: Karli
authors: Emre
authors: E
authors: Gunbey
authors: Harun
authors: H
authors: Kucuk
authors: Hasan
authors: H
authors: Guzel
authors: Emre
authors: E
authors: Ayhan
mesh_terms: D000287:Administration, Topical; D000818:Animals; D005100:Expectorants / Q000008:administration & dosage / Q000494:pharmacology*; D015080:Mesna / Q000008:administration & dosage / Q000494:pharmacology*; D008876:Middle Ear Ventilation / Q000379:methods*; D051381:Rats; D013997:Time Factors; D014432:Tympanic Membrane / Q000187:drug effects / Q000601:surgery*; D014945:Wound Healing / Q000187:drug effects*
chemical_list: D005100:Expectorants; D015080:Mesna