China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (3): 922-930.doi: 10.16431/j.cnki.1671-7236.2020.03.032

• Basic Veterinary Medicine • Previous Articles     Next Articles

The Effect of Formononetin on the Immune Function in Immunosuppressed Mice

ZHANG Yanping, DENG Kang, JIA Ning, FANG Mei, HUANG Weikuan, ZHANG Jianan, LIU Sheng   

  1. College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
  • Received:2019-06-28 Online:2020-03-20 Published:2020-03-17

Abstract: To investigate the effect of formononetin on the immune function in immunosuppressed mice,100 Kunming mice were randomly divided into five groups (20 in per group,half male and half female):normal control group,immunosuppression group,test groupsⅠ,Ⅱ,and Ⅲ,and the medicines were consecutively given to mice by means of intragastric perfusion.The experimental period was 28 d.The mice in immunosuppression group,test groupsⅠ,Ⅱ,and Ⅲ were all given cyclophosphamide (CTX) with 40 μg/(g·BW) for 1-7 d.From 8 to 21 d,the mice in test groupsⅠ,Ⅱ,and Ⅲ were given the solution of formononetin with 50,150 and 250 μg/(g·BW),respectively.While the other mice were given 0.6 mL physiological saline.After the test,thymus index,spleen index,serum hemolysin and the content of IL-2,IL-4 in serum were detected.The surface receptors CD3,CD20 of lymphocyte and the surface receptors CD68 of KCs were measured by immunohistochemistry.The results showed that the immunosuppressed mice were copied successfully with cyclophosphamid,and the formononetin could increase the serum hemolysin,thymus index,spleen index,the content of IL-2 and IL-4 in serum in immunosuppressed mice,and the differences between the immunosuppression group and test group Ⅱ were extremely significant (P<0.01).Immunohistochemical analysis showed that the formononetin could increase CD3 positive T lymphocytes and CD20 positive B lymphocytes significantly in thymus and spleen of immunosuppressed mice,and encourage the proliferation of KCs cells in the liver of immunosuppressed mice,and the differences between the immunosuppression group and test group Ⅱ were also extremely significant (P<0.01).The results suggested that formononetin could improve the immune function of immunosuppressed mice by promoting the proliferation of lymphocytes and releasing the cytokines,and promote obviously the proliferation of KCs in liver.

Key words: formononetin; immunosuppressed mice; immunohistochemical; immune function

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