Journal of Otolaryngology and Ophthalmology of Shandong University ›› 2024, Vol. 38 ›› Issue (6): 78-84.doi: 10.6040/j.issn.1673-3770.0.2024.111

• Clinical Research • Previous Articles    

Study of the association between salivary microbiota and reflux symptoms in patients with laryngopharyngeal reflux

CUI Xiaohuan1-6, YIN Longlong7, ZHANG Yanping1-6, JIANG Xingwang1-6, LI Lina1-6   

  1. 1. Senior Department of Otolaryngology Head and Neck Surgery, the Sixth Medical Center of Chinese PLA General Hospital, Beijing 100037, China2. State Key Laboratory of Hearing and Balance Science, Beijing 100853, China3. National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China4. Key Laboratory of Hearing Science, Ministry of Education, Beijing 100853, China5. Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing 100853, China6. Department of Otolaryngology Head and Neck Surgery, the Eighth Medical Center of Chinese PLA General Hospital, Beijing 100091, China7. Hebei North University, Zhangjiakou 075051, Hebei, China
  • Published:2024-12-13

Abstract: Objective To investigate the correlation between salivary microbiota and symptoms in laryngopharyngeal reflux(LPR)patients. Methods Patients with a reflux symptom index(RSI)score>13 and an apparent response after 8 weeks of proton pump inhibitor medication were enrolled as the LPR group in the Department of Otorhinolaryngology Head and Neck Surgery, the Eighth Medical Center, Chinese PLA General Hospital from February 2022 to November 2022. Another 34 matched healthy volunteers were enrolled as the control group. Their saliva samples were collected, and salivary microbiota was detected and analysed by 16S rRNA gene sequencing. The correlation between differential bacteria in LEfSe analysis and RSI scores was investigated. SPSS 25.0 software was used for statistical analysis. Results LEfSe difference analysis showed that Lactobacillus_murinus, Lactobacillaceae, Lactobacillus, Prevotellaceae, Prevotella, Bacteroidales, Bacteroidia, Bacteroidetes and other 30 species were enriched in the LPR group. Firmicutes, Bacilli, Pseudomonas and other 28 species were enriched in the control group. The correlation analysis demonstrated that the relative abundance of Bacteroidetes, Bacteroidetes, Bacteroidetes, Prevotellaceae and Prevotella were positively correlated with the symptom score of gastric burning sensation, chest pain, dyspepsia or stomachache, and the relative abundance of Prevotella was significantly correlated with the above symptoms(P<0.05). The relative abundance of Prevotella_oralis was positively correlated with the symptom score of difficulty to swallow food, liquids, and tablets(P<0.05). The relative abundance of Lactobacillaceae and Lactobacillu was negatively related to the total score of RSI. Conclusion The salivary dysbiosis might be related to the reflux symptoms of LPR patients and modify the imbalance of ecology in saliva might help to alleviate the symptoms.

Key words: Laryngopharyngeal reflux, Salivary microbiota, Reflux symptom index, Correlation analysis

CLC Number: 

  • R766.5
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