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Gut Dysbiosis Contributes to the Imbalance of Treg and Th17 Cells in Graves' Disease Patients by Propionic Acid.
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- Author(s): Xinhuan Su; Xianlun Yin; Yue Liu; Xuefang Yan; Shucui Zhang; Xiaowei Wang; Zongwei Lin; Xiaoming Zhou; Jing Gao; Zhe Wang; Qunye Zhang; Su, Xinhuan; Yin, Xianlun; Liu, Yue; Yan, Xuefang; Zhang, Shucui; Wang, Xiaowei; Lin, Zongwei; Zhou, Xiaoming; Gao, Jing
- Source:
Journal of Clinical Endocrinology & Metabolism; Nov2020, Vol. 105 Issue 11, p1-22, 22p- Subject Terms:
T helper cells; PROPIONIC acid; MICROBIAL metabolites; BUTYRIC acid; THYROTROPIN receptors; MEDICAL sciences; G protein coupled receptors; HISTORY of medicine; BIOCHEMISTRY; BIOLOGICAL models; RESEARCH; ANIMAL experimentation; RESEARCH methodology; EVALUATION research; MEDICAL cooperation; GRAVES' disease; LYMPHOCYTES; PROPIONATES; COMPARATIVE studies; T cells; DEGENERATION (Pathology); MICE; DISEASE complications - Source:
- Additional Information
- Abstract:
Background: Graves' disease (GD) is a typical organ-specific autoimmune disease. Intestinal flora plays a pivotal role in immune homeostasis and autoimmune disease development. However, the association and mechanism between intestinal flora and GD remain elusive.Objective: To investigate the association and mechanism between intestinal flora and GD.Methods: We recruited 58 initially untreated GD patients and 63 healthy individuals in the study. The composition and metabolic characteristics of the intestinal flora in GD patients and the causal relationship between intestinal flora and GD pathogenesis were assessed using 16S rRNA gene sequencing, targeted/untargeted metabolomics, and fecal microbiota transplantation.Results: The composition, metabolism, and inter-relationships of the intestinal flora were also changed, particularly the significantly reduced short-chain fatty acid (SCFA)-producing bacteria and SCFAs. The YCH46 strain of Bacteroides fragilis could produce propionic acid and increase Treg cell numbers while decreasing Th17 cell numbers. Transplanting the intestinal flora of GD patients significantly increased GD incidence in the GD mouse model. Additionally, there were 3 intestinal bacteria genera (Bacteroides, Alistipes, Prevotella) could distinguish GD patients from healthy individuals with 85% accuracy.Conclusions: Gut dysbiosis contributes to a Treg/Th17 imbalance through the pathway regulated by propionic acid and promotes the occurrence of GD, together with other pathogenic factors. Bacteroides, Alistipes, and Prevotella have great potential to serve as adjunct markers for GD diagnosis. This study provided valuable clues for improving immune dysfunction of GD patients using B. fragilis and illuminated the prospects of microecological therapy for GD as an adjunct treatment. [ABSTRACT FROM AUTHOR] - Abstract: Copyright of Journal of Clinical Endocrinology & Metabolism is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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