Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1999-10-14
pubmed:abstractText
Glucocorticoids dose-dependently increase plasma levels of granulocyte colony stimulating factor (G-CSF). Based on the marked circadian rhythm of cortisol levels, we hypothesized that plasma levels of G-CSF may also show a diurnal rhythm. A prospective study was conducted in 12 healthy young volunteers. Blood samples were obtained every 2 h over 24 h. G-CSF levels averaged 18.0 ng/l (CI 13. 1-22.9) at 8.00 am, increased continuously and reached peak values at 10.00 p.m. Individual harmonic regression analysis showed a clear circadian rhythm. The individual differences between nadir and peak levels averaged 54% (CI 43-65%). This pronounced diurnal rhythm of G-CSF levels may help understand the circadian changes in circulating stem cells, bone marrow DNA synthesis, or bone marrow toxicity induced by some chemotherapeutic agents.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0007-1048
pubmed:author
pubmed:issnType
Print
pubmed:volume
106
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
368-70
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Circadian variation of granulocyte colony stimulating factor levels in man.
pubmed:affiliation
Department of Clinical Pharmacology, TARGET, University Hospital of Vienna, Austria. bernd.jilma@univie.ac.at
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't