Linked Life Data

3558491

Source:http://linkedlifedata.com/resource/pubmed/id/3558491

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1987-5-8
pubmed:abstractText
The suppressive role of platelets on the growth of human marrow megakaryocyte colony forming units (CFU-M) in vitro was investigated by the use of a plasma clot assay. An inverse correlation was established between the number of megakaryocytic colonies grown and the platelet concentration of the plasma or the resultant serum used in the culture system. The suppressive effect of platelets on megakaryocyte colony formation reached a plateau at normal human blood platelet concentration and was specific for CFU-M growth, since marrow cell erythroid burst formation (BFU-E) and granulocytic-monocytic colony formation (CFU-GM) remained unaffected. The inhibitory activity was detectable in the supernatants of platelet suspensions aggregated by thrombin or ADP, and the inhibitory activity released from ADP-stimulated platelets was blocked by pretreatment of platelets with monoclonal antibody HuPl-m1. Partial purification of this activity was achieved by diethylaminoethyl (DEAE)-ion exchange and phytohemagglutinin (PHA)-E agarose affinity chromatography. This inhibitor is a glycoprotein with a molecular weight of 12-17K daltons. This platelet released glycoprotein does not affect the early proliferative phase of CFU-M in vitro but acts on a day 6-8 CFU-M-derived cell by adversely affecting its maturation into recognizable megakaryocytes. These findings demonstrate that a glycoprotein released from platelets suppresses the maturation of CFU-M into megakaryocytes.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0021-9541
pubmed:author
pubmed:issnType
Print
pubmed:volume
130
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
361-8
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Suppression of maturation of megakaryocyte colony forming unit in vitro by a platelet-released glycoprotein.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't