Background. Transplantations of haematopoietic progenitor cells from peripheral blood (PBPC) are able to ensure
haematopoietic and immunological reconstitution as well as stable long term engraftment. Autologous PBPC are
administered after previous myeloablative chemotherapy to patients with haematological and non-haematological
The objective of the submitted study was to follow-up the results of autologous separations of PBPC in patients
with a good effect of mobilisation therapy. The authors evaluated in PBPC concentrates the content of cell parameters
needed for transplantation. In the subsequent part of the trial they mention the times of engraftment after autologous
Methods and Results. The authors evaluated parameters of 26 separations of PBPC in 11 haematooncological
patients with a good effect of mobilisation therapy and with concentration of CD 34+ cells higher than 20 . 10
of peripheral blood. The separations of PBPC were implemented on the Cobe Spectra and Baxter CS 3000 Plus
equipment under a standard regime with processing of 12 l blood, i.e. 2.7 total blood volumes of the patients. In the
mentioned group of patients already from one separation an adequate amount of CD 34+ cells for their transplantation
was obtained. Transplantation doses were prepared on average from two separations and amounted as regards
MNC/kg, CD 34+ cells/kg and CFU-GM/kg to 4.3 . 10
, 17.1 . 10
and 2.5 . 10
. The assembled parametrs correspond
to, or in some parameters exceed, recommended amounts for their transplantation.
Conclusions. In well mobilised patients under the regime of standard separations adequate amounts of progenitor
cells for their autologous transplantation were obtained. Transplantation doses were prepared from two collections.
Investigation of pre-separation concentration of CD 34+ cells in the peripheral blood is a reliable indicator for starting
PBPC separation. Early post-transplantation results indicate the time of engraftment 10 days on average and minor
need of substitution therapy with blood products.
haematopoietic progenitor cells in peripheral blood (PBPC), mobilisation, separation, autologous