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Su X, Chen S, Liu J, Feng Y, Han E, Hao X, Liao M, Cai J, Zhang S, Niu J, He S, Huang S, Lo K, Zeng F. Composition of gut microbiota and non-alcoholic fatty liver disease: A systematic review and meta-analysis. Obes Rev 2024; 25:e13646. [PMID: 37813400 DOI: 10.1111/obr.13646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 08/03/2023] [Accepted: 09/09/2023] [Indexed: 10/11/2023]
Abstract
The present systematic review and meta-analysis aimed to summarize the associations between gut microbiota composition and non-alcoholic fatty liver disease. To compare the differences between individuals with or without NAFLD, the standardized mean difference and 95% confidence interval were computed for each α-diversity index and relative abundance of gut microbes. The β-diversity indices were summarized in a qualitative manner. A total of 54 studies with 8894 participants were included. Overall, patients with NAFLD had moderate reduction in α-diversity indices including Shannon (SMD = -0.36, 95% CI = [-0.53, -0.19], p < 0.001) and Chao 1 (SMD = -0.42, 95% CI = [-0.68, -0.17], p = 0.001), but no significant differences were found for Simpson, observed species, phylogenetic diversity, richness, abundance-based coverage estimator, and evenness (p ranged from 0.081 to 0.953). Over 75% of the included studies reported significant differences in β-diversity. Although there was substantial interstudy heterogeneity, especially for analyses at the phylum, class, and family levels, the majority of the included studies showed alterations in the depletion of anti-inflammatory microbes (i.e., Ruminococcaceae and Coprococcus) and the enrichment of proinflammatory microbes (i.e., Fusobacterium and Escherichia) in patients with NAFLD. Perturbations in gut microbiota were associated with NAFLD, commonly reflected by a reduction in beneficial species and an increase in the pathogenic species.
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Affiliation(s)
- Xin Su
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Shiyun Chen
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Jiazi Liu
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Yonghui Feng
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Eerdun Han
- Department of Hepatobiliary Surgery, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Xiaolei Hao
- Department of Hepatobiliary Surgery, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Minqi Liao
- Helmholtz Zentrum München-German Research Center for Environmental Health, Institute of Epidemiology, Neuherberg, PR, Germany
| | - Jun Cai
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Shiwen Zhang
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Jianxiang Niu
- General Surgery, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Shihua He
- Department of Infectious Disease, Shenzhen Qianhai Shekou Free Trade Zone Hospital, Shenzhen, China
| | - Shaofen Huang
- Shenzhen Qianhai Shekou Free Zone Hospital, Shenzhen, China
| | - Kenneth Lo
- Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
- Research Institute for Future Food, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
| | - Fangfang Zeng
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong, China
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