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Proteomic Study Identifies Glycolytic and Inflammation Pathways Involved in Recurrent Otitis Media
Blendi Ura1, Fulvio Celsi1, Luisa Zupin1
1Institute for Maternal and Child Health-IRCCS "Burlo Garofolo", 65/1 Via dell'Istria, 34137 Trieste, Italy.
Insights
Recurrent acute otitis media (RAOM) and adenotonsillar hypertrophy (ATH) in children involve distinct protein changes in adenoids. This proteomic study identified key pathways like neutrophil degranulation and glycolysis implicated in these common pediatric conditions.
Area of Science:
- Pediatric Otolaryngology
- Proteomics
- Molecular Biology
Background:
- Recurrent acute otitis media (RAOM) affects children, defined by multiple ear infection episodes.
- Adenotonsillar hypertrophy (ATH) is linked to obstructive sleep apnea in children.
- Understanding shared and distinct molecular mechanisms in RAOM and ATH is crucial for pediatric care.
Purpose of the Study:
- To compare the proteomic profiles of adenoids from children with RAOM and ATH.
- To identify differentially modulated proteins and associated biological pathways in these conditions.
Main Methods:
- Proteomic analysis of adenoid tissue from 14 pediatric patients (RAOM and ATH).
- Utilized two-dimensional gel electrophoresis (2-DE) and mass spectrometry (MS) for protein identification.
- Statistical analysis to determine significant protein expression changes (p-value < 0.05).
Main Results:
- Identified 23 protein spots with significant expression differences between RAOM and ATH.
- Detected alterations in proteins associated with neutrophil degranulation pathways.
- Observed changes in proteins linked to glycolysis, suggesting metabolic pathway involvement.
Conclusions:
- Proteomic analysis reveals distinct protein expression patterns in adenoids of children with RAOM and ATH.
- Neutrophil degranulation and glycolysis pathways are significantly modulated in these pediatric conditions.
- Findings provide insights into the molecular underpinnings of RAOM and ATH, potentially guiding future therapeutic strategies.
Abstract:
Recurrent acute otitis media (RAOM) in children is clinically defined as the occurrence of at least three episodes of acute otitis media over a course of 6 months. A further common pathological condition of interest in the context of pediatric otolaryngology is adenotonsillar hypertrophy (ATH), a common cause of obstructive sleep apnea syndrome. Aimed at unraveling the differential modulation of proteins in the two pathologies and at understanding the possible pathways involved in their onset, we analyzed the proteomic profile of the adenoids from 14 RAOM and ATH patients by using two-dimensional gel electrophoresis (2-DE) and mass spectrometry (MS). The 2-DE coupled with MS allowed us to identify 23 spots with significant (p-value < 0.05) changes in protein amount, recognizing proteins involved in neutrophil degranulation and glycolysis pathways.
