[Bushen Jiedu Recipe Protected Radiation Induced Hematopoietic Injury]

Objective To observe the protective effects of Bushen Jiedu Recipe (BJR) on radia- tion induced hematopoietic injury. Methods C57BL/10J mice TLR4 gene (TLR4 +/+) and knockout mice (TLR4 -/-) were randomly divided into 3 groups, the blank control group, the radiation model group, the BJR group. Sampling was respectively performed at day 1 , 14, and 30 after radiation. The general condi- tion of mice was observed. White blood cell (WBC) , red blood cell ( RBC) , and platelet ( PLT) were counted in each group. Thigh bone of mice was collected for bone marrow specimen. Bone marrow slice was prepared. Pathomorphological changes were observed under electron microscope. Results Com- pared with the blank control group, WBC, RBC, and PLT all decreased or showed a decreasing tendency after one day radiation. RBC and PLT significantly decreased after 14 days of radiation (P <0. 01 , P < 0. 05). Counts of WBC and RBC were higher in the TLR4 +/+ BJR group than in the rest 2 groups (P < 0. 01 , P <0. 05). No statistical difference in RBC or PLT between mice after 30 days of radiation and mice in the blank control group (P >0. 05). PLT count in the TLR4 +/+ BJR group was most approximate to the normal value. WBC count obviously increased, but still with statistical difference as compared with the blank control group (P <0.01). WBC count recovered most rapidly in the TLR4 +/+ BJR group. Results under light microscope showed the structure of bone marrow was injured to different degrees in all mice except those in the TLR4 +/+ BJR group. Conclusion BJR could attenuate radiation induced hematopoi- etic injury possibly through TLR4 signal pathway, thus playing significant radioprotective roles.