Linked Life Data

11954658

Source:http://linkedlifedata.com/resource/pubmed/id/11954658

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2002-4-16
pubmed:abstractText
Ovarian follicular development is under the influence of gonadotrophins. The manner by which gonadotrophins achieve their role in cell replication and hormone production is through other specialized molecules. Insulin-like growth factor-1 (IGF-1) is considered to be one of the most important of these molecules. IGF-1 is present in relatively large amounts in the ovary and the IGF-1 gene is expressed in the graafian follicle. IGF-1 binding proteins modulate the action of IGF-1 and are influenced by gonadotrophins. Null mutations of genes encoding IGF-1 and type-1 IGF receptor have demonstrated the obligatory role of IGF-1 in folliculogenesis. It was proposed that IGF-1 may be an obligatory mediator of gonadotrophin-induced folliculogenesis and that the interaction is synergistic. From this point, one group embarked on a series of physiological studies to further elucidate the interaction of these molecules. We discovered that, according to circumstances, follicle stimulating hormone (FSH) may act with IGF-1 synergistically (as was postulated before), additively, independently, or even antagonistically. We discovered that granulosa cells must first be exposed to FSH and then they respond well to IGF-1. All previous studies of granulosa cells were done on mural granulosa cells. We subsequently showed that cumulus type of granulosa cells (adjacent to the oocyte) behave differently in their responses to gonadotrophins and IGF-1.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1355-008X
pubmed:author
pubmed:issnType
Print
pubmed:volume
16
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
151-65
pubmed:dateRevised
2010-6-24
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Recent discoveries in physiology of insulin-like growth factor-1 and its interaction with gonadotropins in folliculogenesis.
pubmed:affiliation
Toronto Fertility Sterility Institute, Toronto, Ontario, Canada. tfsi@aaa-tfsi.com
pubmed:publicationType
Journal Article, Comparative Study, Review, Research Support, Non-U.S. Gov't