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. 2022 Aug 17:2022:3768880.
doi: 10.1155/2022/3768880. eCollection 2022.

Effect of Dihuang Yinzi on Inflammatory Response in Cerebral Ischemia-Reperfusion Model Rats by Regulating Gut Microbiota

Xinyu Wang  1 , Lei Ye  1 , Wanru Sun  1 , Liya Li  1 , Chaoyun Wang  1 , Xiaoyan Xu  1 , Zhaohai Pan  1 , Jianwei Gong  1
Affiliations

Effect of Dihuang Yinzi on Inflammatory Response in Cerebral Ischemia-Reperfusion Model Rats by Regulating Gut Microbiota

Xinyu Wang et al. Biomed Res Int. .

Retraction in

Abstract

Dihuang Yinzi, as a classical Chinese medicine prescription, plays an important role for the treatment of ischemic stroke. Gut microbiota play a functional role for the expression of proinflammatory cytokines and anti-inflammatory cytokines, which further affect central nervous system and change brain function. Our research confirmed that Dihuang Yinzi can exert brain protection by inhibiting inflammatory reaction. Dihuang Yinzi can significantly decrease the contents of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), and interleukin-17 (IL-17) in brain, serum, and colon tissues and increase the contents of transforming growth factor-β (TGF-β) and interleukin-10 (IL-10) in cerebral ischemia-reperfusion model rats. The results of 16s rRNA high-throughput sequencing showed that Dihuang Yinzi had a significant effect on microbiome in rats. The firmicutes, bacteroidetes, and proteobacteria were dominant in Dihuang Yinzi group. The content of firmicutes increased with the increase of dosage of Dihuang Yinzi. Especially, the content of actinomycetes in the high-dose group was higher than other groups. At the genus level, the number of bacteroides in the antibiotic groups was significantly higher than that in the other treatment groups. The results suggest that Dihuang Yinzi may play important roles in treatment of ischemic stroke by regulating the gut microbiota and the inflammatory reaction in the colon tissues, serum, and brain of the model rats, to verify the scientific nature of this prescription in relieving brain inflammatory reaction and brain injury by this way and to reveal the brain-gut related mechanism of Dihuang Yinzi in treating ischemic stroke.

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Conflict of interest statement

Xinyu Wang, Lei Ye, Wanru Sun, Liya Li, Chaoyun Wang, Xiaoyan Xu, Zhaohai Pan, and Jianwei Gong declare that they have no conflicts of interest.

Figures

Figure 1
Figure 1
An overview of the study design and timeline. One mouse from each cage was treated according to experiment condition (N = 42, 6 mice per group).
Figure 2
Figure 2
Diversity estimation of the 16S rRNA gene. (a) ACE indice; (b) Chao indice; (c) Shannon indice.
Figure 3
Figure 3
PCoA based on unweighted UniFrac matrix showed that the overall faecal microbiota composition was different in different group.
Figure 4
Figure 4
Relative abundances of the gut microbiota at phylum level (a) and genus level (b).
Figure 5
Figure 5
Taxonomic differences in 7 group by LEfSe and LDA. (a) LEfSe results for the bacterial communities. (b) Cladogram using the LDA model results for the bacterial hierarchy.
Figure 6
Figure 6
Functional analyses of predicted metagenomes. (a) Differentially abundant KEGG pathways across A and C groups. (b) Differentially abundant KEGG pathways across C and G groups.
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