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- W4311284541 abstract "Radioactive iodine (131I) therapy is a conventional post-surgery treatment widely used for papillary thyroid carcinoma (PTC). Since 131I is orally administered, we hypothesize that it may affect gut microbiome. This study aims to investigate alterations of intestinal microbiome caused by 131I therapy in PTC patients and explore its association with response to 131I therapy.Fecal samples of 60 PTC patients pre- and post-131I therapy were collected to characterize the 131I therapy-induced gut microbiota alterations using 16S rRNA gene sequencing. According to the inclusion criteria, sequence data of 40 out of the 60 patients, divided into excellent response (ER) group and non-excellent response (NER) group, were recruited to investigate the possible connection between gut microbiota and response to 131I therapy. Multivariate binary logistic regression was employed to construct a predictive model for response to 131I therapy.Microbial richness, diversity, and composition were tremendously altered by 131I therapy. A significant decline of Firmicutes to Bacteroides (F/B) ratio was observed post-131I therapy. 131I therapy also led to changes of gut microbiome-related metabolic pathways. Discrepancies in β diversity were found between ER and NER groups both pre- and post-131I therapy. Furthermore, a predictive model for response to 131I therapy with a p value of 0.003 and an overall percentage correct of 80.0% was established, with three variables including lymph node metastasis, relative abundance of g_Bifidobacterium and g_Dorea. Among them, g_Dorea was identified to be an in independent predictor of response to 131I therapy (p = 0.04).For the first time, the present study demonstrates the gut microbial dysbiosis caused by 131I therapy in post-surgery PTC patients and reveals a previously undefined role of gut microbiome as predictor for 131I ablation response. G_Dorea and g_Bifidobacterium may be potential targets for clinical intervention to improve response to 131I in post-operative PTC patients.ChiCTR2100048000. Registered 28 June 2021." @default.
- W4311284541 created "2022-12-25" @default.
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- W4311284541 date "2022-12-13" @default.
- W4311284541 modified "2023-10-15" @default.
- W4311284541 title "Gut microbiota is associated with response to 131I therapy in patients with papillary thyroid carcinoma" @default.
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- W4311284541 doi "https://doi.org/10.1007/s00259-022-06072-5" @default.
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