Linked Life Data

9674860

Source:http://linkedlifedata.com/resource/pubmed/id/9674860

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
1998-9-17
pubmed:abstractText
The CD34 antigen is expressed by human hematopoietic progenitor and stem cells. These cells are capable of reconstituting marrow function after marrow-ablative chemo-radiotherapy. Several different technologies have been developed for the separation of CD34+ cells from bone marrow or peripheral blood stem cell (PBSC) components. We used an immunomagnetic separation technique to enrich CD34+ cells from PBSC components in anticipation of autologous transplantation for patients with B lymphoid malignancies. Twenty-nine patients enrolled on this study and received mobilization chemotherapy followed by G-CSF. Of these, 21 achieved a peripheral blood CD34+ cell level of at least 2.0 x 10(4)/l required by protocol for separation of the stem cell components. A median of three components per patient was collected for processing. The average CD34+ cell concentration in the components after apheresis was 1.0 +/- 1.2%. After the CD34+ cell selection, the enriched components contained 0.6 +/- 0.6% of the starting nucleated cells. The recovery of CD34+ cells, however, averaged 58.4 +/- 19.2% of the starting cell number, with a purity of 90.8 +/- 6.5%. Overall depletion of CD34- cells was 99.96 +/- 0.06%. Nineteen patients were treated with marrow-ablative conditioning regimens and received an average of 6.2 +/- 2.0 x 10(6) CD34+ cells/kg body weight. These patients recovered to an ANC >0.5 x 10(9)/l at a median of 11 days (range 8-14), and platelet transfusion independence at a median of 9 days (range 5-13). Four patients died of transplant-related complications or relapse before 100 days after transplantation. No patient required infusion of unseparated cells because of failure of sustained bone marrow function. These data demonstrate that peripheral blood-derived CD34+ cells enriched by use of an immunomagnetic separation technique are capable of rapid engraftment after autologous transplantation.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0268-3369
pubmed:author
pubmed:issnType
Print
pubmed:volume
21
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1253-62
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Isolation of CD34+ cells from blood stem cell components using the Baxter Isolex system.
pubmed:affiliation
Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98104, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't