Cited by 180Gut microbiota and healthOral microbiology and periodontitis researchGastrointestinal motility and disorders

Dysbiosis and Implication of the Gut Microbiota in Diabetic Retinopathy

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Huang, Yinhua, Wang, Zhijie, Ma, Hongjie, Ji, Shangli, Chen, Zhongping, Cui, Zekai, Chen, Jiansu, Tang, Shibo·2021·Frontiers in Cellular and Infection Microbiology

Abstract

The pathogenesis of type 2 diabetes mellitus (T2DM) is commonly associated with altered gut bacteria. However, whether the microbial dysbiosis that exists in human diabetic patients with or without retinopathy is different remains largely unknown. Here, we collected clinical information and fecal samples from 75 participants, including 25 diabetic patients without retinopathy (DM), 25 diabetic patients with retinopathy (DR), and 25 healthy controls (HC). The gut microbial composition in the three groups was analyzed using 16S ribosomal RNA (rRNA) gene sequencing. Microbial structure and composition differed in the three groups. The α and β diversities in both the DM and DR groups were reduced compared with those in the HC group. Blautia was the most abundant genus, especially in the DM group. In addition, increased levels of Bifidobacterium and Lactobacillus and decreased levels of Escherichia-Shigella, Faecalibacterium, Eubacterium_hallii_group and Clostridium genera were observed in the DM and DR groups compared with the HC group. Furthermore, a biomarker set of 25 bacterial families, which could distinguish patients in the DR group from those in the DM and HC groups was identified, with the area under the curve values ranging from 0.69 to 0.85. Of note, Pasteurellaceae, which was increased in DM and decreased in DR compared with HC, generated a high AUC (0.74) as an individual predictive biomarker. Moreover, 14 family biomarkers were associated with fasting blood glucose levels or diabetes, with most of them being negatively correlated. In summary, our study establishes compositional alterations of gut microbiota in DM and DR, suggesting the potential use of gut microbiota as a non-invasive biomarker for clinical and differential diagnosis, as well as identifying potential therapeutic targets of diabetic retinopathy.

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  1. IDF (2019). Executive summary. IDF Diabetes Atlas 9th edition [Internet]. Available at: http://www.diabetesatlas.org/.

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Authors
Huang, Y., Wang, Z., Ma, H., Ji, S., Chen, Z., Cui, Z., Chen, J., & Tang, S.
Affiliations
  • Central South University (CN)
  • Aier Eye Hospital Group (China) (CN)
Corresponding author
  • Chen, Jiansu
  • Tang, Shibo
Venue
Frontiers in Cellular and Infection Microbiology
Published
2021-03-19
Volume
11
Pages
646348-646348
ISSN
2235-2988 (ISSN-L)
OpenAlex
W3138774893
Cited by
180
References
52
Citations by year
2026: 28 · 2025: 46 · 2024: 43 · 2023: 32 · 2022: 23 · 2021: 8
FWCI
8.79
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Cellular and Infection Microbiology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Natural Science Foundation of China (81871495)
  • Key Research and Development Program of Jiangxi Province (20203BBGL73193)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Dentistry › Periodontics › Oral microbiology and periodontitis research
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
Keywords
diabetic retinopathy, gut microbiota, dysbiosis, type 2 diabetes, microbial biomarkers, Pasteurellaceae, bacterial diversity, Blautia, Bifidobacterium, Lactobacillus, fasting blood glucose, differential diagnosis
MeSH terms
Gastrointestinal Microbiome, Diabetes Mellitus, Type 2, Diabetic Retinopathy, Feces, Humans, RNA, Ribosomal, 16S, Dysbiosis

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