Related Experiment Videos
Changes of middle ear mucosa in secretory otitis media treated with ventilation tubes
F Kiroglu1, M Kaya, C Ozşahinoglu
1Department of Otolaryngology, Cukurova University Faculty of Medicine, Balcali, Adana, Turkey.
Insights
Ventilation tubes for secretory otitis media (SOM) promote middle ear healing. Treatment with ventilation tubes encourages ciliated cell regrowth and normalizes secretions, speeding recovery for children with SOM.
Area of Science:
- Otolaryngology
- Cell Biology
- Pediatric Medicine
Background:
- Secretory otitis media (SOM) is a common condition in children.
- Middle ear mucosa ultrastructure in SOM is not fully understood.
- Ventilation tube insertion is a standard treatment for SOM.
Purpose of the Study:
- To investigate the ultrastructural changes in middle ear mucosa after ventilation tube insertion for SOM.
- To compare the cellular characteristics of middle ear mucosa in children with SOM before and after treatment.
Main Methods:
- Electron microscopy was used to examine middle ear mucosal biopsies.
- Samples were obtained from 14 children with SOM (aged 5-11) and control subjects.
- Ultrastructural features of basal, ciliated, and secretory cells were analyzed.
Main Results:
- Before treatment, SOM mucosa showed a lack of ciliated cells and an increase in secretory cells with both serous and mucoid granules.
- After ventilation tube insertion, ciliated cells significantly increased.
- Secretory cells became less prominent, with predominantly serous granules.
Conclusions:
- Ventilation tube insertion for SOM promotes ciliated cell regeneration.
- Treatment inhibits mucoid secretion and stimulates serous secretion.
- These ultrastructural changes contribute to a shorter recovery period for SOM.
Abstract:
The present study was designed to obtain the precise ultrastructural status of the middle ear mucosa of patients to whom ventilation tubes were applied for the treatment of secretory otitis media (SOM). This study comprised 14 children with SOM aged 5-11. Normal epithelium obtained from otosclerotic patients as controls was composed of three main cell types; basal, ciliated, and secretory. Electron microscopic observations revealed that ciliated cells were almost completely absent in the epithelium of patients with SOM. Secretory cells, on the other hand, were noted to be increased in number with cytoplasmic features indicating active secretory phase; abundant secretory granules in these cells featured both serous and mucoid characteristics. Following the application of ventilation tubes, the micrographs exhibited a vast number of ciliated cells. Furthermore, the secretory cells were less conspicuous and the secretory granules were mostly serous in type. The ultrastructural findings of this investigation strongly suggest that the application of ventilation tubes in cases of SOM stimulates ciliated cell regeneration, inhibits secretion of mucoid material, and activates serous secretion; all of which eventually shorten the recovery period.