Decrease in Thy-1 Expression on Peripheral CD34 Positive Cells Induced by G-CSF Mobilization.
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In order to ascertain the cytological features of peripheral hematopoietic progenitor cells (PHPC) mobilized after administration of chemotherapeutic agents and G-CSF, lineage- and progenitor cell-specific surface markers on CD34 positive (+) cells were sequentially examined. Nineteen evaluable samples were obtained from a malignant lymphoma, an acute lymphoblastic leukemia and 5 neuroblastoma patients. CD38 and HLA-DR were respectively expressed on more than 95% and approximately 85% of CD34+PHPC cells. CD19 was also expressed on the majority and CD117 on 10 to 20% of the CD34+cells. The most striking finding was that the Thy-1(CDw9O)+/CD34+ population was decreased at the peak of mobilization of CD34+ cells as compared to the early phase after G-CSF administration (approximately 20% vs. 60%). These results suggest that decrease in Thy-1 expression on CD34+ cells is related to mechanisms easing CD34+ cell mobilization to the peripheral blood.
- 東北ジャーナル刊行会の論文
東北ジャーナル刊行会 | 論文
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