[The effect of granulocyte colony stimulating factor on T-cell subsets in peripheral blood and its correlation with the mobilization effect of CD34+ cells]

The objective was to observe the effect of G-CSF as a mobilizer of hematopoitic stem cells on the absolute counts of T-cell subsets in peripheral blood and their relevance with the mobilized CD34(+) cells. The examples of peripheral blood from 26 patients performed of autologous stem cell transplantation were taken before and after mobilization by G-CSF. Flow cytometry was used for detecting CD3(+), CD3(+)CD4(+), CD3(+)CD8(+), CD3(+)CD4(+)CD8(+) and CD3(+)CD4(-)CD8(-) cells. Concurrently, their correlations with mobilized CD34(+) cells in peripheral blood were compared. The results showed that after the mobilization by G-CSF, the amounts of CD3(+), CD3(+)CD4(+), CD3(+)CD4(+)CD8(+) and CD3(+)CD4(-)CD8(-) cells in peripheral blood increased by 2.23, 2.62, 2.99 and 10.96 fold respectively, but that of CD3(+)CD4(-)CD8(+) cells was nearly no changed (P = 0.243). The correlation coefficient of CD3(+)CD4(-)CD8(-) cells and mobilized CD34(+) cells was 0.796, (P = 0.000) and no correlation with other T-cell subsets. It was concluded that when CD34(+) cells were mobilized by G-CSF from bone marrow to peripheral blood, the absolute counts of the peripheral T-cell subsets got changed. The increase of CD3(+)CD4(-)CD8(-) cells had correlated with mobilization effect of CD34(+) cells into peripheral blood.