China Animal Husbandry and Veterinary Medicine ›› 2022, Vol. 49 ›› Issue (5): 1746-1756.doi: 10.16431/j.cnki.1671-7236.2022.05.016

• Nutrition and Feed • Previous Articles     Next Articles

Research Progress on Astragalus Polysaccharide on Innate Immunalregulation of Macrophage

LIU Qian1,2, GUO Zhiting1, ZHANG Kang1, WANG Xuezhi1, ZHANG Jingyan1, LI Jianxi1   

  1. 1. Gansu China Veterinary Medicine Engineering Technology Research Center, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China;
    2. College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
  • Received:2021-10-28 Online:2022-05-05 Published:2022-04-29

Abstract: As the first immune defense barrier of body,innate immune system plays a key role in the process of resisting pathogen infection.Maximize inducing the body’s protective mechanism to reduce the inflammatory damage caused by infection through stimulating the natural immune defense function of livestock and poultry by drugs or feed additives,has become one of the sustainable solutions to cope with the rampant pathogenic microorganisms and anti-microbial resistance in the current breeding environment.Being a class of biological macromolecules,Astragalus polysaccharides (APS) is one of the most immunologically active substance,and capable of various biological effects such as immune regulation,anti-virus,anti-stress,anti-oxidation,anti-tumor,etc.In clinical application,it can effectively improve the natural immune defense function of young animals and enhance the protective efficacy and growth performance of various vaccines.Therefore,the study of its regulation effect on the natural immune system of the body and its mechanism has become a research hotspot in recent years.However,due to the influence of origin,extraction and purification methods and complex chemical structure,the further research and development of APS activity are limited to some extent.The author reviewed the progress on the extraction technology and monosaccharide components of APS,and focused on the research progress of its two-way regulation for macrophages which is the main effect or cell of innate immunity,including polarization,function,inflammatory factors expression and the research progress on the intervention of macrophage-related Toll-like receptors (TLRs) signaling pathways,and pointed out the deficiencies in current research,aiming to provide references for the in-depth study of APS immunomodulatory mechanisms and the scientific basis on the promotion and application of APS in livestock and poultry breeding.

Key words: Astragalus polysaccharide (APS); macrophages; extraction; polarization; phagocytosis; TLRs signaling pathways

CLC Number: