Linked Life Data

8485305

Source:http://linkedlifedata.com/resource/pubmed/id/8485305

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1993-6-10
pubmed:abstractText
In this present study we have characterized the array of hemopoietic cytokines generated by fibroblasts in response to inflammatory signals. It was shown that murine embryo fibroblasts (MEF) are able to generate colony stimulating factors (CSFs) [granulocyte-macrophage (GM-CSF), macrophage-CSF (CSF-1) and granulocyte-CSF (G-CSF)] as well as the hemopoietin interleukin 6 (IL-6), while the production of IL-3, IL-4 or tumor necrosis factor (TNF) could not be detected in MEF, as assessed by bioassays or expression of specific mRNA. The production of colony promoting activity was observed when fibroblasts were stimulated by lipopolysaccharide (LPS) or individual cytokines [IL-1, interferon-gamma (IFN-gamma), IL-2, IL-4 or TNF] in serum-free conditions as well as by serum itself. These inducers differentially stimulated in MEF the production of various CSFs; LPS induced mainly CSF-1, while cytokines or serum induced equivalent amounts of GM-CSF and CSF-1. The production of IL-6 was induced by LPS in serum-free conditions, while stimulation by cytokines (IL-1 or IFN-gamma) resulted in IL-6 production only in serum-supplemented cultures. Serum by itself did not induce IL-6 production by MEF. The secretion of IL-6 by fibroblasts was detected early and peaked after 6 hours, while CSF activity peaked after 24-72 hours, depending on the inducer. Constitutive mRNA expression of CSF-1 was detected in serum-free conditions in unstimulated MEF, however colony-promoting activity was detected only upon stimulation with cytokines, LPS or serum.(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1043-4666
pubmed:author
pubmed:issnType
Print
pubmed:volume
5
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
47-56
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Different regulatory levels are involved in the generation of hemopoietic cytokines (CSFs and IL-6) in fibroblasts stimulated by inflammatory products.
pubmed:affiliation
Department of Microbiology and Immunology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't