Investigating causal associations among gut microbiota, metabolites and autoimmune hypothyroidism: a univariable and multivariable Mendelian randomization study

BackgroundAccumulating evidence suggests that the gut microbiota and its metabolites may be involved in autoimmune hypothyroidism. However, the causal association between gut microbiota, metabolites and autoimmune hypothyroidism remains to be determined.MethodsInstrumental variables were screened fr...

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Main Authors: Xue Liu, Jie Yuan, Shuai Liu, Mulin Tang, Xue Meng, Xinhui Wang, Yuchen Li, Yuwei Chai, Chunjia Kou, Qingqing Yang, Juyi Li, Li Zhang, Qingbo Guan, Haiqing Zhang
Format: Article
Language:English
Published: Frontiers Media S.A. 2024-01-01
Series:Frontiers in Immunology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fimmu.2023.1213159/full
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author Xue Liu
Jie Yuan
Shuai Liu
Mulin Tang
Xue Meng
Xinhui Wang
Yuchen Li
Yuwei Chai
Chunjia Kou
Qingqing Yang
Juyi Li
Li Zhang
Qingbo Guan
Qingbo Guan
Qingbo Guan
Qingbo Guan
Haiqing Zhang
Haiqing Zhang
Haiqing Zhang
Haiqing Zhang
author_facet Xue Liu
Jie Yuan
Shuai Liu
Mulin Tang
Xue Meng
Xinhui Wang
Yuchen Li
Yuwei Chai
Chunjia Kou
Qingqing Yang
Juyi Li
Li Zhang
Qingbo Guan
Qingbo Guan
Qingbo Guan
Qingbo Guan
Haiqing Zhang
Haiqing Zhang
Haiqing Zhang
Haiqing Zhang
author_sort Xue Liu
collection DOAJ
description BackgroundAccumulating evidence suggests that the gut microbiota and its metabolites may be involved in autoimmune hypothyroidism. However, the causal association between gut microbiota, metabolites and autoimmune hypothyroidism remains to be determined.MethodsInstrumental variables were screened from the GWAS datasets of 211 gut microbiota taxonomic groups, gut microbiota-derived metabolites, and autoimmune hypothyroidism. Univariable Mendelian randomization (MR) and multivariable Mendelian randomization (MVMR) were used to analyse the potential causal relationship between autoimmune hypothyroidism, these metabolites, or these microbiota. During the MR analysis, we alternated multiple MR methods with different model assumptions to assess the consistency and robustness of the findings: inverse variance weighted (IVW), weighted median, MR pleiotropy residual sum and outlier (MRPRESSO) and MR−Egger methods. Reverse MR analysis was performed to assess the possibility of reverse causality. Finally, enrichment analyses were used to investigate potential biofunctions.ResultsThe IVW results of univariable MR showed that the phyla Actinobacteria, genus DefluviitaleaceaeUCG011, genus Eggerthella, family Defluviitaleaceae, genus Subdoligranulum, genus RuminococcaceaeUCG011, and genus Intestinimonas were associated with autoimmune hypothyroidism. After FDR adjustment, the absence of a causal relationship between gut microbiota and autoimmune hypothyroidism (PFDR > 0.05) suggested a possible marginal association. The results on gut metabolites showed that N-(3-furoyl)glycine, pipecolate, phenylalanine, allantoin, indololactate and alanine were associated with autoimmune hypothyroidism. After FDR correction, only indololactate was associated with hypothyroidism (OR=1.592; 95% CI, 1.228-2.065; PFDR= 0.036). Family Defluviitaleaceae and genus DefluviitaleaceaeUCG011 were suggestively significant in the MVMR. The results of reverse MR analysis showed no reverse causality between autoimmune hypothyroidism and the identified gut microbiota. Enrichment analysis revealed that several key regulatory pathways were significantly enriched.ConclusionThis study supported that there were beneficial or detrimental causal effects of gut microbiota and its metabolites on autoimmune hypothyroidism risk, which provides more theoretical support for mechanistic research on the “thyroid–gut” axis.
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spelling doaj.art-f3d980056f1e40f8bb81a4571b367d022024-01-04T04:43:33ZengFrontiers Media S.A.Frontiers in Immunology1664-32242024-01-011410.3389/fimmu.2023.12131591213159Investigating causal associations among gut microbiota, metabolites and autoimmune hypothyroidism: a univariable and multivariable Mendelian randomization studyXue Liu0Jie Yuan1Shuai Liu2Mulin Tang3Xue Meng4Xinhui Wang5Yuchen Li6Yuwei Chai7Chunjia Kou8Qingqing Yang9Juyi Li10Li Zhang11Qingbo Guan12Qingbo Guan13Qingbo Guan14Qingbo Guan15Haiqing Zhang16Haiqing Zhang17Haiqing Zhang18Haiqing Zhang19Department of Endocrinology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, ChinaDepartment of Biostatistics, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, ChinaDepartment of Biostatistics, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, ChinaKey Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, ChinaKey Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, ChinaDepartment of Endocrinology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, ChinaDepartment of Endocrinology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, ChinaDepartment of Endocrinology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, ChinaDepartment of Endocrinology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, ChinaDepartment of Endocrinology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, ChinaDepartment of Endocrinology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, ChinaDepartment of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, ChinaDepartment of Endocrinology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, ChinaKey Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, ChinaShandong Clinical Medical Center of Endocrinology and Metabolism, Jinan, ChinaInstitute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, ChinaDepartment of Endocrinology, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, ChinaKey Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, ChinaShandong Clinical Medical Center of Endocrinology and Metabolism, Jinan, ChinaInstitute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Jinan, ChinaBackgroundAccumulating evidence suggests that the gut microbiota and its metabolites may be involved in autoimmune hypothyroidism. However, the causal association between gut microbiota, metabolites and autoimmune hypothyroidism remains to be determined.MethodsInstrumental variables were screened from the GWAS datasets of 211 gut microbiota taxonomic groups, gut microbiota-derived metabolites, and autoimmune hypothyroidism. Univariable Mendelian randomization (MR) and multivariable Mendelian randomization (MVMR) were used to analyse the potential causal relationship between autoimmune hypothyroidism, these metabolites, or these microbiota. During the MR analysis, we alternated multiple MR methods with different model assumptions to assess the consistency and robustness of the findings: inverse variance weighted (IVW), weighted median, MR pleiotropy residual sum and outlier (MRPRESSO) and MR−Egger methods. Reverse MR analysis was performed to assess the possibility of reverse causality. Finally, enrichment analyses were used to investigate potential biofunctions.ResultsThe IVW results of univariable MR showed that the phyla Actinobacteria, genus DefluviitaleaceaeUCG011, genus Eggerthella, family Defluviitaleaceae, genus Subdoligranulum, genus RuminococcaceaeUCG011, and genus Intestinimonas were associated with autoimmune hypothyroidism. After FDR adjustment, the absence of a causal relationship between gut microbiota and autoimmune hypothyroidism (PFDR > 0.05) suggested a possible marginal association. The results on gut metabolites showed that N-(3-furoyl)glycine, pipecolate, phenylalanine, allantoin, indololactate and alanine were associated with autoimmune hypothyroidism. After FDR correction, only indololactate was associated with hypothyroidism (OR=1.592; 95% CI, 1.228-2.065; PFDR= 0.036). Family Defluviitaleaceae and genus DefluviitaleaceaeUCG011 were suggestively significant in the MVMR. The results of reverse MR analysis showed no reverse causality between autoimmune hypothyroidism and the identified gut microbiota. Enrichment analysis revealed that several key regulatory pathways were significantly enriched.ConclusionThis study supported that there were beneficial or detrimental causal effects of gut microbiota and its metabolites on autoimmune hypothyroidism risk, which provides more theoretical support for mechanistic research on the “thyroid–gut” axis.https://www.frontiersin.org/articles/10.3389/fimmu.2023.1213159/fullgut microbiotagut metabolitesautoimmune hypothyroidismmendelian randomizationthyroid-gut axis
spellingShingle Xue Liu
Jie Yuan
Shuai Liu
Mulin Tang
Xue Meng
Xinhui Wang
Yuchen Li
Yuwei Chai
Chunjia Kou
Qingqing Yang
Juyi Li
Li Zhang
Qingbo Guan
Qingbo Guan
Qingbo Guan
Qingbo Guan
Haiqing Zhang
Haiqing Zhang
Haiqing Zhang
Haiqing Zhang
Investigating causal associations among gut microbiota, metabolites and autoimmune hypothyroidism: a univariable and multivariable Mendelian randomization study
Frontiers in Immunology
gut microbiota
gut metabolites
autoimmune hypothyroidism
mendelian randomization
thyroid-gut axis
title Investigating causal associations among gut microbiota, metabolites and autoimmune hypothyroidism: a univariable and multivariable Mendelian randomization study
title_full Investigating causal associations among gut microbiota, metabolites and autoimmune hypothyroidism: a univariable and multivariable Mendelian randomization study
title_fullStr Investigating causal associations among gut microbiota, metabolites and autoimmune hypothyroidism: a univariable and multivariable Mendelian randomization study
title_full_unstemmed Investigating causal associations among gut microbiota, metabolites and autoimmune hypothyroidism: a univariable and multivariable Mendelian randomization study
title_short Investigating causal associations among gut microbiota, metabolites and autoimmune hypothyroidism: a univariable and multivariable Mendelian randomization study
title_sort investigating causal associations among gut microbiota metabolites and autoimmune hypothyroidism a univariable and multivariable mendelian randomization study
topic gut microbiota
gut metabolites
autoimmune hypothyroidism
mendelian randomization
thyroid-gut axis
url https://www.frontiersin.org/articles/10.3389/fimmu.2023.1213159/full
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