AI Article Synopsis
- Oral xerostomia is a common issue for patients with differentiated thyroid carcinoma (DTC) after receiving radioiodine therapy, potentially influenced by changes in oral microbiota.* ! A study analyzed saliva samples from DTC patients with and without xerostomia, revealing significant differences in their oral microbiome diversity and specific bacterial taxa linked to the condition.* ! Findings suggest that these microbiota changes may lead to a pro-inflammatory environment that exacerbates xerostomia, indicating new research avenues to explore how oral microbiota alterations affect DTC patients.
Article Abstract
Background And Aims: Oral xerostomia remains one of the most common complications of differentiated thyroid carcinoma patients (DTC) after radioiodine therapy (RAI). Environmental factors in the etiology of xerostomia are largely unknown. We aimed to characterize the oral microbiota signatures and related biological functions associated with xerostomia and identify environmental factors affecting them.
Methods: Saliva was collected from 30 DTC patients with xerostomia (XAs), 32 patients without xerostomia (indicated as non-XAs) following RAI after total thyroidectomy, and 40 healthy people (HCs) for 16S rRNA sequencing analysis.
Results: The oral microbiota of XAs and non-XAs exhibited significant differences in α and β diversities and bacterial taxa. The abundance of , , and were significantly higher in XAs, while the abundance of the was lower in the microbiota of non-XAs. , and were negatively correlated with unstimulated/stimulated whole salivary secretion (USW)/(SWS), while , , and genera levels were positively associated with cumulative radioiodine dose. PICRUSt2 and BugBase suggested a significant difference in the expression of potentially_pathogenic, anaerobic, gram_negative, the arachidonic acid metabolism, and lipopolysaccharide (LPS) biosynthesis between XAs and non-XAs, possibly interdependent on radioiodine-induced inflammation. NetShift analysis revealed that genus might play as a key driver during the process of xerostomia. Five genera effectively distinguished XAs from non-XAs (AUC = 0.87).
Conclusion: Our study suggests for the first time that DTC patients with xerostomia after RAI display microbiota profiles and associated functional changes that may promote a pro-inflammatory environment. Dysbiosis of the oral microbiota may contribute to exacerbating the severity of xerostomia. Our results provide a research direction of the interaction mechanism between oral microbiota alteration and the progress of xerostomia.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9459331 | PMC |
| http://dx.doi.org/10.3389/fendo.2022.895970 | DOI Listing |
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