Linked Life Data

14594510

Source:http://linkedlifedata.com/resource/pubmed/id/14594510

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2003-11-3
pubmed:abstractText
Autologous peripheral blood stem cell (PBSC) transplantation proved to increase complete remission (CR) and DFS in multiple myeloma (MM) patients. CD34(+) cell selection has been used to reduce possible myeloma cell contamination in the graft, but it has not been showed to offer substantial advantages when compared to unpurged grafts; on the contrary, an increase of infectious complications was observed. We investigated the feasibility of a new negative-selection method in this setting. B cell negative selection was performed by using Eligix B cell HDM method. B cell contamination in the yield and in the final product was investigated by flow cytometry. Three patients with newly diagnosed MM entered the study. CD34(+) cell recovery in the three procedures was 73, 97, and 106%, and CD3(+) cell recovery was 88, 86, and 102%, respectively. CD20(+) cell depletion was 100% in all procedures, while CD19(+) cell depletion was 0.37, 1.21, and 0.07 log, respectively. We found an unexpected unreliability and a low efficiency in this B cell depletion method and suggest the need for further extensive testing before its introduction in the preclinical and clinical settings, at least in MM patients. In fact, reasons of such unsatisfactory results are still controversial: platelet contamination/activation in the preselection product, plasma protein interference, reduced CD19 antigen expression on immature B cells, lack of specificity of anti-CD19 monoclonal antibodies, instable binding between anti-CD19-coated high-density microparticles (HDM) and CD19 antigen may, alone or in combination, be involved in the system's low performance.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1525-8165
pubmed:author
pubmed:issnType
Print
pubmed:volume
12
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
537-41
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Low efficiency of a newly introduced high-density microparticles method for B cell depletion in multiple myeloma patients undergoing autologous hematopoietic stem cell transplantation.
pubmed:affiliation
Dipartimentodi Patologia Clinica, Servizio di Immunoematologia e Trasfusionale, Unità di Aferesi Terapeutica e Criobiologia-Ospedale San Gerardo de' Tintori, Monza, Italy. p.perseghin@hsgerardo.org
pubmed:publicationType
Journal Article, Clinical Trial