Chinese Journal of Tissue Engineering Research ›› 2023, Vol. 27 ›› Issue (23): 3653-3659.doi: 10.12307/2023.591

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Mechanism of Xiaozhong Zhitong Mixture against ischemia-reperfusion injury of skin flaps based on metabolomics

He Bo1, He Zhijun2, Liu Tao2, Ma Suilu1   

  1. 1College of Traditional Chinese Medicine, Gansu University of Chinese Medicine, Lanzhou 730030, Gansu Province, China; 2Department of Foot and Ankle Orthopedics, Gansu Hospital of Traditional Chinese Medicine, Lanzhou 730050, Gansu Province, China
  • Received:2022-08-09 Accepted:2022-10-22 Online:2023-08-18 Published:2023-01-16
  • Contact: He Zhijun, Professor, Chief physician, Master’s supervisor, Department of Foot and Ankle Orthopedics, Gansu Hospital of Traditional Chinese Medicine, Lanzhou 730050, Gansu Province, China
  • About author:He Bo, Master candidate, College of Traditional Chinese Medicine, Gansu University of Chinese Medicine, Lanzhou 730030, Gansu Province, China
  • Supported by:
    Gansu Province Traditional Chinese Medicine Project, No. GZKZ-2020-2 (to HZJ); Lanzhou Special Project for Talent Innovation and Entrepreneurship, No. 2019-RC-63 (to HZJ); National Natural Science Foundation of China, No. 81660802 (to HZJ)

Abstract: BACKGROUND: Previous studies have confirmed that Xiaozhong Zhitong Mixture can alleviate ischemia-reperfusion injury of skin flaps, but its metabolomic mechanism has not been reported.
OBJECTIVE: To explore the mechanism of Xiaozhong Zhitong Mixture against ischemia-reperfusion injury of rat skin flaps. 
METHODS: A rat skin flap ischemia-reperfusion injury model was established. Related metabolomics techniques were used to analyze the endogenous levels of metabolite samples from normal rats, model rats and rats after intervention with Xiaozhong Zhitong Mixture. Relevant biomarkers were retrieved and identified and metabolic pathways were then constructed.
RESULTS AND CONCLUSION: Xiaozhong Zhitong Mixture could significantly reduce the pathological changes of skin flap tissue in rats with skin flap ischemia-reperfusion injury. Significantly differential metabolites, including malonic acid and 3-(3-hydroxyphenyl)propionic acid, were identified and imported into MetaboAnalyst 4.0 and KEGG databases for metabolic pathway analysis. After intervention, the metabolic pathways of Xiaozhong Zhitong Mixture included pyrimidine metabolism and phenylalanine metabolism. To conclude, Xiaozhong Zhitong Mixture improves ischemia-reperfusion injury of rat skin flap by regulating the metabolic pathways such as pyrimidine and phenylalanine metabolic pathways, which thereby provides a theoretical basis for clarifying the mechanism of Xiaozhong Zhitong Mixture in the treatment of ischemia-reperfusion injury of rat skin flap.

Key words: Xiaozhong Zhitong Mixture, metabolomics, flap ischemia-reperfusion, malonic acid, 3-(3hydroxyphenyl)propionic acid

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