Gut microbiota, circulating cytokines and dementia: a Mendelian randomization study

Abstract Background Some studies have shown that gut microbiota may be associated with dementia. However, the causal effects between gut microbiota and different types of dementia and whether cytokines act as a mediator remain unclear. Methods Gut microbiota, cytokines, and five dementia types, incl...

Full description

Bibliographic Details
Main Authors: Dong Ji, Wen-Zhu Chen, Lei Zhang, Zhi-Hua Zhang, Li-Jian Chen
Format: Article
Language:English
Published: BMC 2024-01-01
Series:Journal of Neuroinflammation
Subjects:
Online Access:https://doi.org/10.1186/s12974-023-02999-0
_version_ 1827388303823863808
author Dong Ji
Wen-Zhu Chen
Lei Zhang
Zhi-Hua Zhang
Li-Jian Chen
author_facet Dong Ji
Wen-Zhu Chen
Lei Zhang
Zhi-Hua Zhang
Li-Jian Chen
author_sort Dong Ji
collection DOAJ
description Abstract Background Some studies have shown that gut microbiota may be associated with dementia. However, the causal effects between gut microbiota and different types of dementia and whether cytokines act as a mediator remain unclear. Methods Gut microbiota, cytokines, and five dementia types, including Alzheimer’s disease (AD), frontotemporal dementia (FTD), dementia with Lewy body (DLB), vascular dementia (VD), and Parkinson’s disease dementia (PDD) were identified from large-scale genome-wide association studies (GWAS) summary data. We used Mendelian randomization (MR) to investigate the causal relationships between gut microbiota, cytokines, and five types of dementia. Inverse variance weighting (IVW) was used as the main statistical method. In addition, we explored whether cytokines act as a mediating factor in the pathway from gut microbiota to dementia. Results There were 20 positive and 16 negative causal effects between genetic liability in the gut microbiota and dementia. Also, there were five positive and four negative causal effects between cytokines and dementias. Cytokines did not act as mediating factors. Conclusions Gut microbiota and cytokines were causally associated with five types of dementia, and cytokines seemed not to be the mediating factors in the pathway from gut microbiota to dementia.
first_indexed 2024-03-08T16:15:48Z
format Article
id doaj.art-efa73d73231e427e93072ec686d32336
institution Directory Open Access Journal
issn 1742-2094
language English
last_indexed 2024-03-08T16:15:48Z
publishDate 2024-01-01
publisher BMC
record_format Article
series Journal of Neuroinflammation
spelling doaj.art-efa73d73231e427e93072ec686d323362024-01-07T12:37:20ZengBMCJournal of Neuroinflammation1742-20942024-01-0121111010.1186/s12974-023-02999-0Gut microbiota, circulating cytokines and dementia: a Mendelian randomization studyDong Ji0Wen-Zhu Chen1Lei Zhang2Zhi-Hua Zhang3Li-Jian Chen4Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical UniversityDepartment of Anesthesiology, The First Affiliated Hospital of Anhui Medical UniversityDepartment of Anesthesiology, The First Affiliated Hospital of Anhui Medical UniversityDepartment of Epidemiology and Biostatistics, School of Public Health, Anhui Medical UniversityDepartment of Anesthesiology, The First Affiliated Hospital of Anhui Medical UniversityAbstract Background Some studies have shown that gut microbiota may be associated with dementia. However, the causal effects between gut microbiota and different types of dementia and whether cytokines act as a mediator remain unclear. Methods Gut microbiota, cytokines, and five dementia types, including Alzheimer’s disease (AD), frontotemporal dementia (FTD), dementia with Lewy body (DLB), vascular dementia (VD), and Parkinson’s disease dementia (PDD) were identified from large-scale genome-wide association studies (GWAS) summary data. We used Mendelian randomization (MR) to investigate the causal relationships between gut microbiota, cytokines, and five types of dementia. Inverse variance weighting (IVW) was used as the main statistical method. In addition, we explored whether cytokines act as a mediating factor in the pathway from gut microbiota to dementia. Results There were 20 positive and 16 negative causal effects between genetic liability in the gut microbiota and dementia. Also, there were five positive and four negative causal effects between cytokines and dementias. Cytokines did not act as mediating factors. Conclusions Gut microbiota and cytokines were causally associated with five types of dementia, and cytokines seemed not to be the mediating factors in the pathway from gut microbiota to dementia.https://doi.org/10.1186/s12974-023-02999-0Gut microbiotaDementiaCytokinesMendelian randomization
spellingShingle Dong Ji
Wen-Zhu Chen
Lei Zhang
Zhi-Hua Zhang
Li-Jian Chen
Gut microbiota, circulating cytokines and dementia: a Mendelian randomization study
Journal of Neuroinflammation
Gut microbiota
Dementia
Cytokines
Mendelian randomization
title Gut microbiota, circulating cytokines and dementia: a Mendelian randomization study
title_full Gut microbiota, circulating cytokines and dementia: a Mendelian randomization study
title_fullStr Gut microbiota, circulating cytokines and dementia: a Mendelian randomization study
title_full_unstemmed Gut microbiota, circulating cytokines and dementia: a Mendelian randomization study
title_short Gut microbiota, circulating cytokines and dementia: a Mendelian randomization study
title_sort gut microbiota circulating cytokines and dementia a mendelian randomization study
topic Gut microbiota
Dementia
Cytokines
Mendelian randomization
url https://doi.org/10.1186/s12974-023-02999-0
work_keys_str_mv AT dongji gutmicrobiotacirculatingcytokinesanddementiaamendelianrandomizationstudy
AT wenzhuchen gutmicrobiotacirculatingcytokinesanddementiaamendelianrandomizationstudy
AT leizhang gutmicrobiotacirculatingcytokinesanddementiaamendelianrandomizationstudy
AT zhihuazhang gutmicrobiotacirculatingcytokinesanddementiaamendelianrandomizationstudy
AT lijianchen gutmicrobiotacirculatingcytokinesanddementiaamendelianrandomizationstudy