Linked Life Data

9402473

Source:http://linkedlifedata.com/resource/pubmed/id/9402473

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1998-2-17
pubmed:abstractText
Knowledge of the controlling mechanisms of human osteoprogenitor cell differentiation has important implications for understanding bone turnover. The in vitro differentiation of human bone marrow fibroblasts into adipogenic and osteogenic cells and the interaction of 1,25 dihydroxyvitamin D3 (1,25(OH)2D3) and dexamethasone in this process has been investigated together with the effects of human serum. Marrow fibroblasts cultured in human serum and dexamethasone for 28 days, generated lipid containing cells as confirmed by morphology, Oil red O staining and immunocytochemistry using antiserum to the adipocyte-specific protein, adipocyte P2 (aP2). In cultures containing 1,25(OH)2D3 and dexamethasone, adipogenesis was stimulated within 21 days. Osteocalcin expression, as assessed by in situ hybridization, was dependent on the presence of 1,25(OH)2D3 and was decreased in cultures treated with dexamethasone. Northern analysis confirmed the decrease in osteocalcin expression and increase in lipoprotein lipase expression with the appearance of the adipogenic phenotype in these cultures. Marrow cultures maintained for 14 days in human serum and osteotropic agents before switching to fetal calf serum indicated the continuous requirement of human serum in these cultures for adipogenesis. These results demonstrate that human serum contains factors that exert dramatic effects on human bone marrow cell differentiation to augment the osteogenic and adipogenic activity of 1,25(OH)2D3 and dexamethasone.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0171-9335
pubmed:author
pubmed:issnType
Print
pubmed:volume
74
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
251-61
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Modulation of osteogenesis and adipogenesis by human serum in human bone marrow cultures.
pubmed:affiliation
MRC Bone Research Laboratory, Nuffield Department of Orthopaedic Surgery, University of Oxford, England.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't