Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1992-9-14
pubmed:abstractText
The mechanisms responsible for 5-fluorouracil (5FU)-induced rebound thrombocytosis are not completely understood. SI/SI(d) mice, which do not undergo rebound thrombocytosis in response to 5FU, provide a genetic approach to the study of this phenomenon. Recent reports by several groups that the SI locus encodes a protein known variably as stem cell factor (SCF), mast cell growth factor, or kit ligand, suggests the possibility that the lack of wild-type SCF in SI/SI(d) mice is responsible for their defective response to 5FU-induced thrombocytopenia. It is shown in this report that SCF-treated SI/SI(d) mice are as capable as their wild-type littermates in undergoing rebound thrombocytosis. W/Wv mice, mutated at the locus encoding the SCF receptor, also do not undergo rebound thrombocytosis, but are not responsive to SCF treatment. In normal mice, it is shown by RNA solution hybridization that SCF mRNA expression is increased during the 5FU-induced platelet nadir period. It is also shown by autoradiography that maturing megakaryocytes express SCF receptors, and that in vivo administration of SCF significantly raises the numbers of megakaryocytes, as well as circulating platelet counts. Taken together, these data indicate that SCF may be an important regulator of platelet production under both normal and physiologically disturbed situations.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0006-4971
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
80
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
904-11
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed-meshheading:1379852-Animals, pubmed-meshheading:1379852-Bone Marrow, pubmed-meshheading:1379852-Fluorouracil, pubmed-meshheading:1379852-Gene Expression, pubmed-meshheading:1379852-Hematopoietic Cell Growth Factors, pubmed-meshheading:1379852-Kinetics, pubmed-meshheading:1379852-Megakaryocytes, pubmed-meshheading:1379852-Mice, pubmed-meshheading:1379852-Mice, Inbred BALB C, pubmed-meshheading:1379852-Mutation, pubmed-meshheading:1379852-Nucleic Acid Hybridization, pubmed-meshheading:1379852-Platelet Count, pubmed-meshheading:1379852-Polymerase Chain Reaction, pubmed-meshheading:1379852-Proto-Oncogene Proteins, pubmed-meshheading:1379852-Proto-Oncogene Proteins c-kit, pubmed-meshheading:1379852-RNA, Messenger, pubmed-meshheading:1379852-Receptors, Cell Surface, pubmed-meshheading:1379852-Stem Cell Factor, pubmed-meshheading:1379852-Thrombocytosis
pubmed:year
1992
pubmed:articleTitle
Evidence that stem cell factor is involved in the rebound thrombocytosis that follows 5-fluorouracil treatment.
pubmed:affiliation
Amgen, Laboratory of Stem Cell Biology, Amgen Center, Thousand Oaks, CA 91320.
pubmed:publicationType
Journal Article