Linked Life Data

2587005

Source:http://linkedlifedata.com/resource/pubmed/id/2587005

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1990-1-4
pubmed:abstractText
We describe an original method to monitor clonal cell density (hyperplasia) and the cell cycle kinetics of neoplastic cells simultaneously. We thus characterize the in vitro influence of two different types of fetal calf serum (FCS), defined as FCS-S and FCS-I, on the progesterone- or estradiol-induced effect on proliferation and cell cycle kinetic parameters of the MXT mouse and MCF-7 human mammary cancer cell lines. The two sera were treated with dextran-coated charcoal. The FCS-S serum showed a stimulatory influence on MXT and MCF-7 growth, whereas FCS-I was devoid of any clear-cut influence. The cells were cultured on glass coverslips, placed in Petri dishes containing either a control or a hormone-added medium, fixed for histology and submitted to the Feulgen reaction, which allows selective and quantitative (stoichiometric) staining of DNA. Proliferation and cell cycle kinetics were analyzed on the same sample of cells by means of the SAMBA 200 cell image processor. Our results show that steroid-mediated effects were dramatically modulated according to the type of serum used. Furthermore, they also show that pharmacological doses of progesterone or estradiol decrease MXT cell growth by at least two different mechanisms: the first is related to cell cycle kinetics, i.e. an inhibition of the cells into the S phase, while the second remains unknown but seems to be cell cycle independent. High dose estradiol, but not progesterone, induced the same inhibitory influence on the MCF-7 cells.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0030-2414
pubmed:author
pubmed:issnType
Print
pubmed:volume
46
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
391-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
Influence of fetal calf serum in combination with pharmacological doses of progesterone or estradiol on proliferation and cell cycle kinetics of cultured mammary cancer cells.
pubmed:affiliation
Laboratoire d'Histologie, Faculté de Médecine, Université Libre de Bruxelles, Belgique.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't