Linked Life Data

3378068

Source:http://linkedlifedata.com/resource/pubmed/id/3378068

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1988-7-25
pubmed:abstractText
Gonadotropin-releasing hormone (GnRH)-like proteins with anti-gonadotropic properties were recently discovered in the ovaries of several species, including humans. Since neither GnRH receptors nor GnRH are in bovine ovarian tissue, we examined, in the present studies, whether concentrations of GnRH-like proteins varied during development of the corpus luteum (CL) and whether GnRH-like proteins were selectively localized in ovarian cells of cows. For these studies, GnRH-like proteins were extracted from various ovarian and nonovarian tissues and fluids and fractionated for hydrophobic interaction chromatography. A highly specific and sensitive radioreceptor assay (RRA) was used to quantify concentrations of GnRH-like proteins. The major findings of these studies demonstrated that 1) the amount of GnRH-like proteins in the corpus luteum (CL) was proportional to the weight of the CL; 2) the concentration of GnRH-like proteins in luteal tissue decreased during development of the CL; 3) GnRH-like proteins were in ovarian and numerous nonovarian tissues, but were not in the heart, plasma, or follicular fluid; 4) the retention time for GnRH-like proteins following high-pressure liquid chromatography (HPLC) varied with the tissue source; and 5) compared with all other tissues, the greatest concentration of GnRH-like proteins was in granulosal cells. We concluded that the concentration of GnRH-like proteins in luteal cells decreased during development of the CL, and that a specific GnRH-like protein was selectively localized in bovine granulosal cells.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0006-3363
pubmed:author
pubmed:issnType
Print
pubmed:volume
38
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
544-50
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
GnRH-like proteins in cows: concentrations during corpora lutea development and selective localization in granulosal cells.
pubmed:affiliation
Department of Ob/Gyn, Yale University School of Medicine, New Haven, Connecticut 06510.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.