Mechanism of Huangqi-Honghua Combination Regulating the Gut Microbiota to Affect Bile Acid Metabolism Towards Preventing Cerebral Ischaemia-reperfusion Injury in Rats

Overview

Journal Pharm Biol

Specialties Pharmacology
Pharmacy

Date 2022 Oct 29

PMID 36307999

Authors

Kai Wang

Yue Chen

Jinyi Cao

Ruimin Liang

Yi Qiao

Likun Ding

Xiaojuan Yang

Zhifu Yang

Affiliations

Soon will be listed here.

Abstract

Context: Effective treatment of ischaemic stroke is required to combat its high prevalence and incidence. Although the combination of (Fisch.) Bge. (Fabaceae) and L. (Asteraceae) is used in traditional Chinese medicine for the treatment of stroke, its underlying mechanism remains unclear.

Objective: The objective of this study is to elucidate the mechanism underlying Huangqi-Honghua (HQ-HH) for the treatment of ischaemic stroke by gut microbiota analysis and metabonomics.

Materials And Methods: Sprague-Dawley rats were randomly assigned to the sham, model, HQ-HH, and Naoxintong (NXT) groups. The middle cerebral artery occlusion-reperfusion model was established after 7 days of intragastric administration in the HQ-HH (4.5 g/kg, qd) and NXT (1.0 g/kg, qd) groups. The neurological examination, infarct volume, gut microbiota, bile acids, and inflammation markers were assessed after 72 h of reperfusion.

Results: Compared with the model group, HQ-HH significantly reduced the neurological deficit scores of the model rats (2.0 ± 0.2 vs. 3.16 ± 0.56), and reduced the cerebral infarct volume (27.83 ± 3.95 vs. 45.17 ± 2.75), and reduced the rate of necrotic neurons (26.35 ± 4.37 vs. 53.50 ± 9.61). HQ-HH regulating gut microbiota, activating the bile acid receptor FXR, maintaining the homeostasis of bile acid, reducing Th17 cells and increasing Treg cells in the rat brain, reducing the inflammatory response, and improving cerebral ischaemia-reperfusion injury.

Conclusions: These data indicate that HQ-HH combination can improve ischaemic stroke by regulating the gut microbiota to affect bile acid metabolism, providing experimental evidence for the wide application of HQ-HH in clinical practice of ischaemic stroke.

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