Linked Life Data

11927651

Source:http://linkedlifedata.com/resource/pubmed/id/11927651

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2002-4-2
pubmed:abstractText
Although supraphysiological levels of 1alpha, 25 dihydroxyvitamin D3 (VD) have been demonstrated extensively to induce the monomacrophagic differentiation of leukemic myelo- and monoblasts, little is known about the role that physiological levels of this vitamin could play in the regulation of normal hematopoiesis. To clarify this issue, we adopted a liquid-culture model in which cord blood CD34+ hematopoietic progenitors, induced to differentiate in the presence of different combinations of cytokines, were exposed to VD at various concentrations and stimulation modalities. The data obtained show that physiological levels of VD promote a differentiation of CD34+ hematopoietic progenitors characterized by the induction of all the monomacrophagic immunophenotypic and morphological markers. This effect is not only exerted at the terminal maturation but also at the commitment level, as demonstrated by the decrease of highly undifferentiated CD34+CD38- hematopoietic stem cells, the down-regulation of CD34 antigen, and the increase of monocyte-committed progenitors. Molecular analysis suggests that the VD genomic signaling pathway underlies the described differentiation effects.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0741-5400
pubmed:author
pubmed:issnType
Print
pubmed:volume
71
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
641-51
pubmed:dateRevised
2008-10-14
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Physiological levels of 1alpha, 25 dihydroxyvitamin D3 induce the monocytic commitment of CD34+ hematopoietic progenitors.
pubmed:affiliation
Dipartimento di Scienze Biomediche, Sezione di Chimica Biologica, Università di Modena e Reggio Emilia, Modena, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't