Characteristic alterations of gut microbiota and serum metabolites in patients with chronic tinnitus: a multi-omics analysis
ABSTRACT Chronic tinnitus is a central nervous system disorder. Currently, the effects of gut microbiota on tinnitus remain unexplored. To explore the connection between gut microbiota and tinnitus, we conducted 16S rRNA sequencing of fecal microbiota and serum metabolomic analysis in a cohort of 70...
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American Society for Microbiology
2025-01-01
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| Series: | Microbiology Spectrum |
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| Online Access: | https://journals.asm.org/doi/10.1128/spectrum.01878-24 |
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| author | Jiang Wang Jia-Hui Xiang Xu-Yuan Peng Min Liu Le-Jia Sun Min Zhang Li-Yuan Zhang Zhi-Bin Chen Zheng-Quan Tang Lei Cheng |
| author_facet | Jiang Wang Jia-Hui Xiang Xu-Yuan Peng Min Liu Le-Jia Sun Min Zhang Li-Yuan Zhang Zhi-Bin Chen Zheng-Quan Tang Lei Cheng |
| author_sort | Jiang Wang |
| collection | DOAJ |
| description | ABSTRACT Chronic tinnitus is a central nervous system disorder. Currently, the effects of gut microbiota on tinnitus remain unexplored. To explore the connection between gut microbiota and tinnitus, we conducted 16S rRNA sequencing of fecal microbiota and serum metabolomic analysis in a cohort of 70 patients with tinnitus and 30 healthy volunteers. We used the weighted gene co-expression network method to analyze the relationship between the gut microbiota and the serum metabolites. The random forest technique was utilized to select metabolites and gut taxa to construct predictive models. A pronounced gut dysbiosis in the tinnitus group, characterized by reduced bacterial diversity, an increased Firmicutes/Bacteroidetes ratio, and some opportunistic bacteria including Aeromonas and Acinetobacter were enriched. In contrast, some beneficial gut probiotics decreased, including Lactobacillales and Lactobacillaceae. In serum metabolomic analysis, serum metabolic disturbances in tinnitus patients and these differential metabolites were enriched in pathways of neuroinflammation, neurotransmitter activity, and synaptic function. The predictive models exhibited great diagnostic performance, achieving 0.94 (95% CI: 0.85–0.98) and 0.96 (95% CI: 0.86–0.99) in the test set. Our study suggests that changes in gut microbiota could potentially influence the occurrence and chronicity of tinnitus, and exert regulatory effects through changes in serum metabolites. Overall, this research provides new perceptions into the potential role of gut microbiota and serum metabolite in the pathogenesis of tinnitus, and proposes the “gut-brain-ear” concept as a pathomechanism underlying tinnitus, with significant clinical diagnostic implications and therapeutic potential.IMPORTANCETinnitus affects millions of people worldwide. Severe cases may lead to sleep disorders, anxiety, and depression, subsequently impacting patients’ lives and increasing societal healthcare expenditures. However, tinnitus mechanisms are poorly understood, and effective therapeutic interventions are currently lacking. We discovered the gut microbiota and serum metabolomics changes in patients with tinnitus, and provided the potential pathological mechanisms of dysregulated gut flora in chronic tinnitus. We proposed the innovative concept of the “gut-brain-ear axis,” which underscores the exploration of gut microbiota impact on susceptibility to chronic tinnitus through serum metabolic profile modulation. We also reveal novel biomarkers associated with chronic tinnitus, offering a new conceptual framework for further investigations into the susceptibility of patients, potential treatment targets for tinnitus, and assessing patient prognosis. Subsequently, gut microbiota and serum metabolites can be used as molecular markers to assess the susceptibility and prognosis of tinnitus.Furthermore, fecal transplantation may be used to treat tinnitus. |
| format | Article |
| id | doaj-art-a06aa25815d646f3b17b42685626e261 |
| institution | Kabale University |
| issn | 2165-0497 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | American Society for Microbiology |
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| series | Microbiology Spectrum |
| spelling | doaj-art-a06aa25815d646f3b17b42685626e2612025-01-07T14:05:19ZengAmerican Society for MicrobiologyMicrobiology Spectrum2165-04972025-01-0113110.1128/spectrum.01878-24Characteristic alterations of gut microbiota and serum metabolites in patients with chronic tinnitus: a multi-omics analysisJiang Wang0Jia-Hui Xiang1Xu-Yuan Peng2Min Liu3Le-Jia Sun4Min Zhang5Li-Yuan Zhang6Zhi-Bin Chen7Zheng-Quan Tang8Lei Cheng9Department of Otorhinolaryngology & Hearing International Jiangsu Ear and Hearing Center, The First Affiliated Hospital, Nanjing Medical University, Nanjing, ChinaDepartment of Breast Surgical Oncology, National Cancer Center & National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, ChinaDepartment of Otorhinolaryngology & Hearing International Jiangsu Ear and Hearing Center, The First Affiliated Hospital, Nanjing Medical University, Nanjing, ChinaDepartment of Otorhinolaryngology & Hearing International Jiangsu Ear and Hearing Center, The First Affiliated Hospital, Nanjing Medical University, Nanjing, ChinaDepartment of General Surgery, The First Affiliated Hospital, Nanjing Medical University, Nanjing, ChinaDepartment of Otorhinolaryngology & Hearing International Jiangsu Ear and Hearing Center, The First Affiliated Hospital, Nanjing Medical University, Nanjing, ChinaDepartment of Otorhinolaryngology & Hearing International Jiangsu Ear and Hearing Center, The First Affiliated Hospital, Nanjing Medical University, Nanjing, ChinaDepartment of Otorhinolaryngology & Hearing International Jiangsu Ear and Hearing Center, The First Affiliated Hospital, Nanjing Medical University, Nanjing, ChinaSchool of Life Sciences, Anhui University, Hefei, ChinaDepartment of Otorhinolaryngology & Hearing International Jiangsu Ear and Hearing Center, The First Affiliated Hospital, Nanjing Medical University, Nanjing, ChinaABSTRACT Chronic tinnitus is a central nervous system disorder. Currently, the effects of gut microbiota on tinnitus remain unexplored. To explore the connection between gut microbiota and tinnitus, we conducted 16S rRNA sequencing of fecal microbiota and serum metabolomic analysis in a cohort of 70 patients with tinnitus and 30 healthy volunteers. We used the weighted gene co-expression network method to analyze the relationship between the gut microbiota and the serum metabolites. The random forest technique was utilized to select metabolites and gut taxa to construct predictive models. A pronounced gut dysbiosis in the tinnitus group, characterized by reduced bacterial diversity, an increased Firmicutes/Bacteroidetes ratio, and some opportunistic bacteria including Aeromonas and Acinetobacter were enriched. In contrast, some beneficial gut probiotics decreased, including Lactobacillales and Lactobacillaceae. In serum metabolomic analysis, serum metabolic disturbances in tinnitus patients and these differential metabolites were enriched in pathways of neuroinflammation, neurotransmitter activity, and synaptic function. The predictive models exhibited great diagnostic performance, achieving 0.94 (95% CI: 0.85–0.98) and 0.96 (95% CI: 0.86–0.99) in the test set. Our study suggests that changes in gut microbiota could potentially influence the occurrence and chronicity of tinnitus, and exert regulatory effects through changes in serum metabolites. Overall, this research provides new perceptions into the potential role of gut microbiota and serum metabolite in the pathogenesis of tinnitus, and proposes the “gut-brain-ear” concept as a pathomechanism underlying tinnitus, with significant clinical diagnostic implications and therapeutic potential.IMPORTANCETinnitus affects millions of people worldwide. Severe cases may lead to sleep disorders, anxiety, and depression, subsequently impacting patients’ lives and increasing societal healthcare expenditures. However, tinnitus mechanisms are poorly understood, and effective therapeutic interventions are currently lacking. We discovered the gut microbiota and serum metabolomics changes in patients with tinnitus, and provided the potential pathological mechanisms of dysregulated gut flora in chronic tinnitus. We proposed the innovative concept of the “gut-brain-ear axis,” which underscores the exploration of gut microbiota impact on susceptibility to chronic tinnitus through serum metabolic profile modulation. We also reveal novel biomarkers associated with chronic tinnitus, offering a new conceptual framework for further investigations into the susceptibility of patients, potential treatment targets for tinnitus, and assessing patient prognosis. Subsequently, gut microbiota and serum metabolites can be used as molecular markers to assess the susceptibility and prognosis of tinnitus.Furthermore, fecal transplantation may be used to treat tinnitus.https://journals.asm.org/doi/10.1128/spectrum.01878-24chronic tinnitusgut microbiotaserum metabolitesgut-brain-ear axismulti-omics analysis |
| spellingShingle | Jiang Wang Jia-Hui Xiang Xu-Yuan Peng Min Liu Le-Jia Sun Min Zhang Li-Yuan Zhang Zhi-Bin Chen Zheng-Quan Tang Lei Cheng Characteristic alterations of gut microbiota and serum metabolites in patients with chronic tinnitus: a multi-omics analysis Microbiology Spectrum chronic tinnitus gut microbiota serum metabolites gut-brain-ear axis multi-omics analysis |
| title | Characteristic alterations of gut microbiota and serum metabolites in patients with chronic tinnitus: a multi-omics analysis |
| title_full | Characteristic alterations of gut microbiota and serum metabolites in patients with chronic tinnitus: a multi-omics analysis |
| title_fullStr | Characteristic alterations of gut microbiota and serum metabolites in patients with chronic tinnitus: a multi-omics analysis |
| title_full_unstemmed | Characteristic alterations of gut microbiota and serum metabolites in patients with chronic tinnitus: a multi-omics analysis |
| title_short | Characteristic alterations of gut microbiota and serum metabolites in patients with chronic tinnitus: a multi-omics analysis |
| title_sort | characteristic alterations of gut microbiota and serum metabolites in patients with chronic tinnitus a multi omics analysis |
| topic | chronic tinnitus gut microbiota serum metabolites gut-brain-ear axis multi-omics analysis |
| url | https://journals.asm.org/doi/10.1128/spectrum.01878-24 |
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