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ORIGINAL ARTICLE
Year : 2020  |  Volume : 26  |  Issue : 3  |  Page : 159-162

Assessment of vestibulotoxicity of neem leaf (Azadirachta indica) in a rat animal model


1 Department of Otorhinolaryngology-Head and Neck Surgery, School of Medical Sciences, Universiti Sains Malaysia, Kuban Kerian, Kota Bharu, Kelantan, Malaysia
2 Department of Otorhinolaryngology-Head and Neck Surgery, Hospital Sultanah Nora Ismail, Batu Pahat, Johor, Malaysia

Correspondence Address:
Dr. Aziah Ab Rani
Department of Otorhinolaryngology-Head and Neck Surgery, School of Medical Sciences, Universiti Sains Malaysia Health Campus, 16150 Kota Bharu, Kelantan
Malaysia
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/indianjotol.INDIANJOTOL_6_20

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Introduction: Otomycosis is a challenging and frustrating entity for both patients and otolaryngologists for it frequently requires long-term treatment and follow-up, yet the recurrence rate remains high. The management is directed toward intense aural toileting with administration of topical antifungals. There has been increased resistance to classical antifungal agents, typically involving the azoles and polyenes. This has led into the research of medicinal plants as an alternative treatment for treating fungal infections. Objective: This study aims to investigate the possible vestibulotoxic effects of neem leaf (Azadirachta indica), a commonly used home remedy on the inner ear in a rat animal model. Methodology: Twenty healthy, mature Wistar albino rats were divided into three groups: Groups A (eight animals), B (eight animals), and C (four animals). They underwent baseline vestibular parameter testing, following which an endoscopic-guided transtympanic instillation of aqueous and alcohol neem extract was performed into the right middle ear of the rats in Groups A and B, while normal saline was instilled into the right middle ear of rats in Group C. Vestibular parameter testing was repeated on the rats in both groups post instillation of transtympanic neem at 4-h, 24-h, 48-h, 72-h, 1-week, 2-week, and 3-week intervals. Results: There was no deterioration in all vestibular parameters recorded post instillation of neem extract within the middle ear. Conclusion: Neem extract is a safe alternative in the treatment of otomycosis in the presence of tympanic membrane perforation as it poses no vestibulotoxic side effects.


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