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Objective: To explore the effect of Composite Salviae miltiorrhizae Injection (CSMI) on radiosensitivity of leukemia cells. Methods:Semisolid agar culture and flow cytometry assay were performed for studying the change in radiosensitivity of HL60 cell line and fresh human leukemia cells after exposing to CSMI.Results: The D0 (the inverse of the slope of the survival curve) and SF2 (survival fraction at 2 Gy) of HL60 cell line were decreased from 1. 53, 0. 34 to 0. 93, 0. 12, respectively and apopotosis rates after radiation were raised significantly by CSMI. Furthermore, the concentration of CSMI and the time of mixed culture with CSMI before irradiation had positive relation to the effects mentioned above. Compared with control group, CSMI could increase the radiation-induced apoptosis of fresh leukemia cells (5. 89 ± 2. 91 vs 12. 05 ± 3. 06). Conclusion: CSMI could obviously enhance the radiosensitivity of leukemia cells.Original article on CJIM(Chin) 1998; 18(5): 279
Method: Semisolid agar culture and flow cytometry assay were performed for studying the change in radiosensitivity of HL60 cell line and fresh human leukemia cells after exposing to CSMI .Results: The D0 (the inverse of the slope of the survival curve) and SF2 (survival fraction at 2 Gy) of HL60 cell line were decreased from 1. 53, 0. 34 to 0. 93, 0. 12, respectively Apopotosis rates after radiation increased significant by CSMI., the concentration of CSMI and the time of mixed culture with CSMI before irradiation had positive relation to the effects mentioned above. Compared with control group, CSMI could increase the radiation-induced apoptosis of fresh Leukemia cells (5. 89 ± 2. 91 vs 12. 05 ± 3. 06). Conclusion: CSMI could enhance the radiosensitivity of leukemia cells.Original article on CJIM(Chin) 1998; 18(5): 279