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Abstract Title:

The effect of rosmarinic acid on the prevention of myringosclerosis.

Abstract Source:

Int J Pediatr Otorhinolaryngol. 2019 Jul 23 ;126:109597. Epub 2019 Jul 23. PMID: 31351349

Abstract Author(s):

Doğukan Özdemir, İbrahim Ağrı, Mustafa Bakirtaş, Arzu Ağrı, Dursun Mehmet Mehel, Mehmet Çelebi, Abdulkadir Özgür

Article Affiliation:

Doğukan Özdemir

Abstract:

OBJECTIVES: Myringosclerosis commonly occurs as a long-term complication of ventilation during the treatment of otitis media. We aimed to determine the effects of rosmarinic acid as an antioxidant on experimentally induced myringosclerosis.

METHODS: Twenty-four male Sprague-Dawley rats, weighing 250-300 g, were unilaterally myringotomized and randomly separated into three groups. Group 1 received no treatment (control group) (n = 8); Group 2 received topical rosmarinic acid (n = 8); Group 3 received oral rosmarinic acid (n = 8). On the twenty-first day, the right ears were examined by otomicroscope and findings of myringosclerosis were recorded. Finally, all of the rats were euthanized and the tympanic membrane (TM) thickness and the severity of middle ear mucosal inflammation were evaluated histopathologically.

RESULTS: The myringosclerosis severity, TM thickness, and inflammation scores were found to be significantly higher in the control group than in the topical and systemic treatment groups (p < 0.05). There were no statistically significant differences in terms of TM thickness and inflammation scores between the topical and systemic treatment groups (p > 0.05). While moderate and severe myringosclerosis were higher in the control group, mild myringosclerosis was found to be higher in both treatment groups.

CONCLUSION: The local and oral administration of rosmarinic acid suppressed inflammation, reduced TM thickness, and prevented the development of myringosclerosis in myringotomized rats.

Study Type : Animal Study

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