Linked Life Data

2164919

Source:http://linkedlifedata.com/resource/pubmed/id/2164919

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1990-8-30
pubmed:abstractText
Neonatal human skin fibroblasts produce insulin-like growth factor-binding proteins (IGFBPs) that have the potential to modulate the actions of the growth factors. We have examined the IGFBPs secreted by monolayer cultures of neonatal fibroblasts by ligand blotting with [125I]IGF-II and immunoblotting with antisera raised against three well characterized IGFBPs: IGFBP-1, IGFBP-2, and IGFBP-3. As detected by ligand blotting, medium from untreated fibroblasts contained IGFBP-3, a second IGFBP which appeared as a doublet of 29-31 K, and a smaller protein of 22 K. Within 10 h of the addition of 50 ng/ml IGF-I, a markedly increased level of production of the 29-31 K IGFBP doublet was detectable, with levels increasing 8- to 9-fold by 24 h compared to that in untreated samples. IGF-I was approximately twice as potent as IGF-II at inducing 29-31 K IGFBP, with a half-maximal response at 15.4 +/- 2.7 ng/ml IGF-I and 26.6 +/- 1.6 ng/ml IGF-II (n = 3). Insulin tested at 1 microgram/ml did not induce 29-31 K IGFBP. Neither GH nor the acid-labile subunit of the circulating high mol wt IGFBP complex induced 29-31 K IGFBP or affected its induction by IGF-I or IGF-II. Immunoblotting demonstrated that IGF-inducible IGFBP did not react with antibodies to IGFBP-1, IGFBP-2, or IGFBP-3. These results indicate that IGF-I and IGF-II induce an IGFBP that is different from previously characterized human IGFBPs.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0013-7227
pubmed:author
pubmed:issnType
Print
pubmed:volume
127
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
781-8
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Production of an insulin-like growth factor (IGF)-inducible IGF-binding protein by human skin fibroblasts.
pubmed:affiliation
Department of Medicine, University of Sydney, New South Wales, Australia.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't