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Published on: December 6, 2016
Pediatric Obstructive Sleep Apnea is Associated With Changes in the Oral Microbiome and Urinary Metabolomics Profile:
Huajun Xu1,2,3, Xiaoyan Li4, Xiaojiao Zheng5
1Department of Otolaryngology Head and Neck Surgery and Center of Sleep Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.
Insights
Pediatric obstructive sleep apnea (OSA) alters oral microbiome composition and urinary metabolites. These changes in oral bacteria correlate with metabolic disruptions, suggesting a link between gut and oral health in children with OSA.
Area of Science:
- Microbiology
- Metabolomics
- Pediatric Health
Background:
- Oral diseases are linked to obstructive sleep apnea (OSA).
- Limited research exists on oral microbiota and metabolic profiles in pediatric OSA.
Purpose of the Study:
- To investigate oral microbiome structure and composition in pediatric OSA.
- To evaluate associations between oral microbiota and urinary metabolic profiles in pediatric OSA.
Main Methods:
- Integrated metagenomics (16S rRNA sequencing) and metabolomics (LC-MS, GC-MS).
- Analysis of oral microbiome and urinary metabolome in pediatric OSA patients and controls.
Main Results:
- Pediatric OSA significantly altered oral microbiome composition (e.g., Firmicutes, Proteobacteria).
- 57 urinary metabolites, including 5 gut microflora-related, were differentially present in pediatric OSA.
- Oral microbiome alterations correlated with urinary metabolite perturbations in pediatric OSA.
Conclusions:
- Oral microbiome composition and function are significantly altered in pediatric OSA.
- Further research is needed to elucidate the underlying mechanisms.
Study Objectives:
Several cross-sectional studies have reported associations between oral diseases and obstructive sleep apnea (OSA). However, there have been no reports regarding the structure and composition of the oral microbiota with simultaneous evaluation of potential associations with perturbed metabolic profiles in pediatric OSA.
Methods:
An integrated approach, combining metagenomics based on high-throughput 16S rRNA gene sequencing, and metabolomics based on ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry and gas chromatography coupled with time-of-flight mass spectrometry, was used to evaluate the oral microbiome and the urinary metabolome.
Results:
16S rRNA gene sequencing indicated that the oral microbiome composition was significantly perturbed in pediatric OSA compared with normal controls, especially with regard to Firmicutes, Proteobacteria, Bacteroidetes, Fusobacteria, and Actinobacteria. Moreover, metabolomics profiling indicated that 57 metabolites, 5 of which were metabolites related to the microflora of the digestive tract, were differentially present in the urine of pediatric patients with OSA and controls. Co-inertia and correlation analyses revealed that several oral microbiome changes were correlated with urinary metabolite perturbations in pediatric OSA. However, this correlation relationship does not imply causality.
Conclusions:
High-throughput sequencing revealed that the oral microbiome composition and function were significantly altered in pediatric OSA. Further studies are needed to confirm and determine the mechanisms underlying these findings.
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