{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T04:06:29Z","timestamp":1775102789703,"version":"3.50.1"},"reference-count":27,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2009,1,2]],"date-time":"2009-01-02T00:00:00Z","timestamp":1230854400000},"content-version":"vor","delay-in-days":246,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["The Laryngoscope"],"published-print":{"date-parts":[[2008,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:bold>Objectives:<\/jats:bold> Noise\u2010induced hearing loss can be caused, among other causes, by increased nitric oxide (NO) production in the inner ear leading to nitroactive stress and cell destruction. Some studies in the literature suggest that the degree of hearing loss (HL) could be reduced in an animal model through ascorbic acid supplementation. To identify the effect of ascorbic acid on tissue\u2010dependent NO content in the inner ear of the guinea pig, we determined the local NO production in the organ of Corti and the lateral wall separately 6 hours after noise exposure.<\/jats:p><jats:p><jats:bold>Study Design:<\/jats:bold> Prospective animal study in guinea pigs.<\/jats:p><jats:p><jats:bold>Methods:<\/jats:bold> Over a period of 7 days, male guinea pigs were supplied with minimum (25 mg\/kg body weight\/day) and maximum (525 mg\/kg body weight\/day) ascorbic acid doses, and afterwards exposed to noise (90 dB sound pressure level for 1 hour). The acoustic\u2010evoked potentials were recorded before and after noise exposure. The organ of Corti and the lateral wall were incubated differently for 6 hours in culture medium, and the degree of NO production was determined by chemiluminescence.<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold> Ascorbic acid treatment reduced the hearing threshold shift after noise exposure depending on concentration. When the maximum ascorbic acid dose was substituted, NO production was significantly reduced in the lateral wall after noise exposure and slightly reduced in the organ of Corti.<\/jats:p><jats:p><jats:bold>Conclusions:<\/jats:bold> Oral supplementation of the natural radical scavenger ascorbic acid reduces the NO\u2010production rate in the inner ear in noisy conditions. This finding supports the concept of inner ear protection by ascorbic acid supplementation.<\/jats:p>","DOI":"10.1097\/mlg.0b013e31816381ae","type":"journal-article","created":{"date-parts":[[2009,2,19]],"date-time":"2009-02-19T21:21:27Z","timestamp":1235078487000},"page":"837-842","source":"Crossref","is-referenced-by-count":49,"title":["Ascorbic Acid Reduces Noise\u2010Induced Nitric Oxide Production in the Guinea Pig 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