Linked Life Data

1506892

Source:http://linkedlifedata.com/resource/pubmed/id/1506892

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1992-9-23
pubmed:abstractText
The authors have previously reported the presence of insulin-like growth factor (IGF) receptors in central nervous system (CNS) tumors and the production of IGF's and their binding proteins by CNS tumors in situ. This study was designed to investigate whether CNS tumor cells are capable of autocrine secretion of IGF-I and IGF-II in vitro. Production of IGF's was studied by specific radioimmunoassay of tumor-cell-conditioned serum-free media from 34 CNS tumors: 12 gliomas, 12 meningiomas, and 10 miscellaneous tumors. Normal human serum and cerebrospinal fluid served as controls. Insulin-like growth factor I was detected in five of 12 meningiomas but in none of the gliomas studied. In contrast, IGF-II was detected in four of 12 gliomas and in six of 11 meningiomas studied. Four miscellaneous tumors produced IGF-I and/or IGF-II. These results suggest that CNS tumors differentially produce IGF-I and IGF-II in vitro. Preferential production of IGF's may be an important marker of the tumor-cell differentiation or malignancy and may be useful as a clinical diagnostic tool. These results add further support to the concept that IGF's may play a role in the regulation of the behavior of CNS tumors.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0022-3085
pubmed:author
pubmed:issnType
Print
pubmed:volume
77
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
445-50
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Insulin and insulin-like growth factors in central nervous system tumors. Part V: Production of insulin-like growth factors I and II in vitro.
pubmed:affiliation
Department of Neurosurgery, University of Illinois College of Medicine, Chicago.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't