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Article: Lipid peroxides in middle ear fluid after acute otitis media in guinea pigs
- Article from:
- The Annals of Otology, Rhinology & Laryngology
- Article date:
- June 1, 1999
- Author:
CopyrightCopyright Annals Publishing Company Jun 1999. Provided by ProQuest LLC. (Hide copyright information)
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Oxygen free radical damage has been demonstrated in the middle ear mucosa of a guinea pig model of acute otitis media (AOM). Potential sources of free radicals include both neutrophils responding to infection and Streptococcus pneumoniae, a common AOM pathogen. This project was conducted to examine the middle ear fluid in a guinea pig model of AOM for evidence of elevated lipid peroxide (LPO) as a marker of free radical damage. Twenty-one guinea pigs were injected transtympanically with bacteria into the left (infected) middle ear cavity and sterile saline into the right (control) middle ear. Middle ear fluid was recovered on postoperative day 5. The fluid was weighed and analyzed for ...
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