【摘 要】
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Objective: To explore the effect of homoharringtonine (HHT) on bone morrow CD34+CD7+ cells in chronic granulocytic leukemia (CGL). Methods: The changes of bone
【机 构】
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The First Hospital of Huaian,Medical College of Southeast University
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Objective: To explore the effect of homoharringtonine (HHT) on bone morrow CD34+CD7+ cells in chronic granulocytic leukemia (CGL). Methods: The changes of bone morrow CD34+CD7+ cells were observed after the treatment of HHT in 23 cases with CGL. The proliferation and apoptosis of CD34+CD7+ cells treated with HHT in vitro were studied. Results: The proportion of CD34+CD7+ cells in CGL (0.145±0.021) was higher than that of normal control (0.052±0.013). The proportion of CD34+CD7+ cells in patients who got cytogenetic responses to HHT (0.072±0.020) decreased remarkably, but not in those patients who did not got cytogenetic responses to HHT, (0.137±0.023). the proliferation of CD34+ cells was inhibited and the proportion of CD34+CD7+ cells decreased after cultured with HHT (0.134 in 24 h, 0.126 in 48 h and 0.102 in 72). The apoptosis rate of CD34+CD7+ cells was higher than that in CD34+CD7- cells (35.39%±4.39% versus 24.57%(4.01%, P＜0.05) 72 h after culture with HHT. Conclusion: The proportion of CD34+CD7+ cells in CGL was higher than that of normal control and HHT may inhibit the proliferation and induce apoptosis of bone marrow CD34+CD7+ cells.
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