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Immune status and eustachian tube function in recurrence of otitis media with effusion
Masja Straetemans1, Niels van Heerbeek, Elisabeth A M Sanders
1Department of Epidemiology and Biostatistics, Radboud University Nijmegen Medical Centre, the Netherlands.
Insights
Recurrent otitis media with effusion (OME) is more likely in children with poor eustachian tube function and low immunoglobulin A (IgA) or immunoglobulin G2 (IgG2) levels. Decreased mannose-binding lectin also increases OME recurrence risk.
Area of Science:
- Pediatric Otolaryngology
- Immunology
- Epidemiology
Background:
- Recurrent otitis media with effusion (OME) significantly impacts children's health and development.
- The interplay between immune status and eustachian tube function in OME recurrence is not fully understood.
Purpose of the Study:
- To investigate the combined influence of immune markers and eustachian tube function on the recurrence of bilateral OME in children.
- To identify specific immune profiles and eustachian tube dysfunction indicators associated with OME recurrence.
Main Methods:
- A prospective cohort study involving 136 children aged 2-7 years with persistent bilateral OME.
- Participants underwent tympanostomy tube placement, and recurrence was monitored for 6 months post-extrusion.
- Evaluated immunologic factors (IgA, IgG2, mannose-binding lectin) and eustachian tube function (closing pressure).
Main Results:
- Multivariate analysis revealed that poor eustachian tube function (closing pressure > 75th percentile) combined with low IgA or IgG2 levels significantly increased OME recurrence risk.
- Specifically, low IgA levels correlated with a 6.3-fold increased risk, and low IgG2 levels with a 3.0-fold increased risk.
- Higher serum levels of functional mannose-binding lectin were associated with a reduced probability of OME recurrence (OR, 0.7).
Conclusions:
- The recurrence of bilateral OME post-tympanostomy tube placement is associated with a combination of impaired eustachian tube function and specific immune deficiencies (low IgA or IgG2).
- Reduced levels of mannose-binding lectin are also a significant risk factor for recurrent OME in this pediatric cohort.
Objective:
To study the combined role of immune status and eustachian tube function in the development of recurrent bilateral otitis media with effusion (OME).
Design:
Prospective cohort study.
Setting:
Three academic and general hospitals.
Patients:
Children aged 2 to 7 years with a first clinical episode of bilateral OME that persisted for at least 3 months; 136 (81%) of 168 eligible children participated. All children received bilateral tympanostomy tubes at study entry.
Main Outcome Measure:
Recurrence of bilateral OME within 6 months after tube extrusion.
Results:
Univariate analyses of various immunologic factors (IgA, IgG1, IgG2, IgG3, IgG4, mannose-binding lectin, and the FcgammaRIIa-H/R131 genotype) and eustachian tube function (forced response test) did not show any significant associations with bilateral OME recurrence. Multivariate analyses showed that children with closing pressures higher than the 75th percentile and IgA or IgG2 levels below the 50th percentile of the cohort were more likely to develop recurrent OME than children with closing pressures higher than the 75th percentile and IgA or IgG2 levels above the 50th percentile. The corresponding risk ratios were 6.3 (95% confidence interval [CI], 1.0-40.1) for IgA level and 3.0 (95% CI, 1.1-8.2) for IgG2 level. The multivariate analyses also revealed that increasing serum levels of functional mannose-binding lectin were associated with decreasing probabilities of developing recurrent OME (odds ratio, 0.7; 95% CI, 0.6-1.0).
Conclusion:
Recurrence of bilateral OME after tympanostomy tube placement is more likely in children with a combination of low IgA or low IgG2 levels with poor eustachian tube function and decreased levels of mannose-binding lectin.
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