The study on Regulatory B cells in mice infected with Echinoccus granulosus
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摘要
Objective:To observe the phenotype changes and expressions of regulatory B cells and its related molecules in BALB/c mice infected with Echinococcus granulosus and relationship between them and infection focus,in order to reaserch the relationship between regulatory B cells and its related molecules in Echinococcus granulosus infection and to reaserch the function of regulatory B cells to Echinococcus granulosus infection.Method:Flow cytometry was used to analyze the rate of CD1dhiCD5+CD19hi B cells and CD1dhiCD5+CD19hi IL-10+ B cells in spleen;The expressions of IL-10 and TGF-β1 m RNA were analyzed by q RT-PCR;The level of liver pathological alteration was observed by HE staining;The protein expression and location were analyzed by immuhistochemistry respectively;we measured the serum levels of IL-10 and TGF-β1 in each group by ELISA.Result:Flow cytometry results showed that the ratio of CD1dhiCD5+CD19hi cells and CD1dhiCD5+CD19hi IL-10+ cells in spleen infected mice was significantly higher from 90 days to 270 days after infection.q RT-PCR demonstrated that in the early stages,the expressions of IL-10 and TGF-β1 m RNA were increased in the middle and late stages of the infection.HE staining reveals that the erosion of livers was getting worse.IL-10 and TGF-β1 only observed in hepatic sinusoid,hyalomitome,fiber organization,focus germinal layer surrounding in infected group.5) CBA and ELISA results showed that the serum of IL-10 and TGF-β1 both remain low during early stages,but in the late stages,which significantly increased.Conclude:CD1dhiCD5+CD19hi regulatory B cells may be the one reason of leading Echinococcus granulosus infection immune suppress.Regulatory B cells in mice spleen participate in this development.In the infection,regulatory B cells by secreting IL-10 and TGF-β play inhibit function.Furthermore,the high expressions of regulatory B cells related molecules IL-10 and TGF-β1 are disadvantage of clearancing livers Echinococcus granulosus infection.
Objective:To observe the phenotype changes and expressions of regulatory B cells and its related molecules in BALB/c mice infected with Echinococcus granulosus and relationship between them and infection focus,in order to reaserch the relationship between regulatory B cells and its related molecules in Echinococcus granulosus infection and to reaserch the function of regulatory B cells to Echinococcus granulosus infection.Method:Flow cytometry was used to analyze the rate of CD1dhiCD5+CD19hi B cells and CD1dhiCD5+CD19hi IL-10+ B cells in spleen;The expressions of IL-10 and TGF-β1 m RNA were analyzed by q RT-PCR;The level of liver pathological alteration was observed by HE staining;The protein expression and location were analyzed by immuhistochemistry respectively;we measured the serum levels of IL-10 and TGF-β1 in each group by ELISA.Result:Flow cytometry results showed that the ratio of CD1dhiCD5+CD19hi cells and CD1dhiCD5+CD19hi IL-10+ cells in spleen infected mice was significantly higher from 90 days to 270 days after infection.q RT-PCR demonstrated that in the early stages,the expressions of IL-10 and TGF-β1 m RNA were increased in the middle and late stages of the infection.HE staining reveals that the erosion of livers was getting worse.IL-10 and TGF-β1 only observed in hepatic sinusoid,hyalomitome,fiber organization,focus germinal layer surrounding in infected group.5) CBA and ELISA results showed that the serum of IL-10 and TGF-β1 both remain low during early stages,but in the late stages,which significantly increased.Conclude:CD1dhiCD5+CD19hi regulatory B cells may be the one reason of leading Echinococcus granulosus infection immune suppress.Regulatory B cells in mice spleen participate in this development.In the infection,regulatory B cells by secreting IL-10 and TGF-β play inhibit function.Furthermore,the high expressions of regulatory B cells related molecules IL-10 and TGF-β1 are disadvantage of clearancing livers Echinococcus granulosus infection.
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