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Tissue fatty acid composition in obstructive sleep apnea and recurrent tonsillitis
Rana Ezzedini1, Maryam Darabi, Babollah Ghasemi
1Tuberculosis and Lung Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
Summary
Children with recurrent infective tonsillitis (RT) show altered tonsillar fatty acid profiles compared to those with obstructive sleep apnea (OSA). These changes in lipid metabolism may indicate tissue damage severity.
Area of Science:
- Biochemistry
- Pediatric Otolaryngology
- Metabolomics
Background:
- Tonsillar hypertrophy is associated with altered lipid metabolism and inflammatory cytokines.
- Understanding tissue fat composition differences in pediatric tonsillar conditions is crucial.
Purpose of the Study:
- To investigate differences in tonsillar tissue fat composition between children with obstructive sleep apnea (OSA) and recurrent infective tonsillitis (RT).
Main Methods:
- Tonsillar tissues were collected from 114 OSA and 92 RT patients (aged 4-10 years) during tonsillectomy.
- Gas liquid chromatography was used to analyze the comprehensive fatty acid profile of tissue lipid extracts.
Main Results:
- Recurrent infective tonsillitis (RT) tonsillar tissue showed higher levels of palmitoleic and oleic acids, and lower stearic acid compared to obstructive sleep apnea (OSA) tissue.
- RT tonsillar tissue exhibited increased total monounsaturated fatty acids (+9.9%) and fatty acid desaturation index (+20.5%).
- Oleic acid correlated positively with BMI, snoring, and hypertrophy grade in RT patients.
Conclusions:
- Altered fatty acid composition in tonsillar tissue suggests in vivo lipid metabolism changes during human tonsillar hypertrophy.
- These metabolic shifts may serve as indicators linked to the severity or type of tonsillar tissue damage.
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