Journal of Capital Medical University ›› 2024, Vol. 45 ›› Issue (3): 488-493.doi: 10.3969/j.issn.1006-7795.2024.03.017

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The causal relationship between intestinal flora and diabetes, inflammatory factors and C-reactive protein: Mendelian randomized analysis

Hu Yafen1, Hua Lin2*   

  1. 1.Department of Endocrinology, Daxing District People's Hospital, Capital Medical University, Beijing 102600,China; 2.Department of Intelligent Medical Engineering, School of Biomedical Engineering, Capital Medical University, Beijing 100069,China
  • Received:2024-02-29 Online:2024-06-21 Published:2024-06-13

Abstract: Objective  To explore the relationship between intestinal flora and diabetes mellitus, inflammatory factors and C-reactive protein (CRP).Methods  In this study, the intestinal flora was taken as exposure factors while diabetes, inflammatory factors and CRP were taken as outcome factors, and single  nucleotide polymorphisms(SNPs) were used as instrument variables. Mendelian randomization method was used.  Results  Coprococcus1, Dialister, Lachnospiraceae and Parabacteroides were less abundant in the diabetes population whereas Bilophila and Romboutsia were more abundant in the diabetes population. Dialister is positively correlated with interleukin-17(IL-17) (β=0.797, P=0.036). CRP is negatively correlated with Coprococcus1 (β=-0.036, P=0.027), Parabacteroides (β=-0.216, P=0.015), and Dialister (β=-0.028, P=0.030). CRP showed the mediation effect in the relationship between two bacteria (Coprococcus1 and Parabacteroides) and diabetes.Conclusion  Our study suggests the potential interactions between intestinal flora, CRP and diabetes.

Key words: intestinal flora mellitus, diabetes mellitus, inflammatory factors, C-reactive protein, Mendelian randomization

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