Effect of Ascorbic Acid on Noise Induced Hearing Loss in Rats
Publish place: Iranian Journal of Otorhinolaryngology، Vol: 27، Issue: 4
Publish Year: 1394
نوع سند: مقاله ژورنالی
زبان: English
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JR_IJOTO-27-4_003
تاریخ نمایه سازی: 11 بهمن 1400
Abstract:
Introduction: After presbycusis, noise-induced hearing loss is the second most common cause of acquired hearing loss. Numerous studies have shown that high-intensity noise exposure increases free radical species; therefore, use of antioxidants to detoxify the free radicals can prevent cellular damage in the cochlea. We studied the potential hearing protective effect of different doses of ascorbic acid administered prior to noise exposure in rats. Materials and Methods: Twenty-four male albino Wistar rats were randomly allocated into four groups: groups A, B, and C received ۱۲۵۰, ۲۵۰, and ۵۰ mg/kg/day of ascorbic acid, respectively, and group D acted as the control group. After ۱۴ days of ascorbic acid administration, the rats were exposed to noise (۱۰۵ dB sound pressure level for ۲ h). Distortion product otoacoustic emissions (DPOAE) were recorded prior to starting the ascorbic acid as baseline and ۱ h after the noise exposure. Results: The amplitude decrease was ۱۴.۹۹ dB for group A, ۱۶.۱۱ dB for group B, ۲۸.۸۲ dB for group C, and ۲۹.۹۱ dB for the control group. Moderate and high doses of ascorbic acid significantly reduced the transient threshold shift in the rats. Conclusion: The results of present study support the concept of cochlea protection by antioxidant agents. This dose-dependent protective effect was shown through the use of ascorbic acid treatment prior to noise exposure.
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Authors
Ziba Loukzadeh
Industrial Diseases Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Abolfazl Hakimi
Industrial Diseases Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Mansour Esmailidehaj
Department of Physiology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Amir Houshang Mehrparvar
Industrial Diseases Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
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