Lysozyme Levels in Middle Ear Effusion and Serum in Otitis Media

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Abstract
• Lysozyme concentrations in middle ear effusion and serum were determined in patients with otitis media with effusion. Lysozyme concentrations in middle ear effusion were significantly higher than in serum. Children with mucoid otitis media showed significantly higher levels of lysozyme in middle ear effusion than children with serous otitis media and adults with otitis media with effusion. Higher levels of lysozyme were observed in the group of children younger than 5 years old compared with the age group of 6- to 10year-olds. Lysozyme concentrations of middle ear effusion in adults were significantly lower than those of mucoid otitis media in children. These results indicate that lysozyme plays an important role in the disease process of otitis media. (Arch Otolaryngol Head Neck Surg. 1990;116:54-56)