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Expression of the growth hormone variant gene in human placenta
Frankenne, Francis; Rentier-Delrue, Françoise; Scippo, Marie-Louise et al.
1987In Journal of Clinical Endocrinology and Metabolism, 64 (3), p. 635-637
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Keywords :
GROWTH HORMONE; PLACENTA; GH gene
Abstract :
[en] Besides the hGH-N gene, which codes for the pituitary 22 and 20K GH variants, the human genome contains a second GH gene, namely the GH-V, which has been thought to be silent. We recently discovered a placental variant of human growth hormone (hPGH), which appears in maternal serum at mid-pregnancy and which rises in concentration thereafter to term. As hPGH and GH-V proteins display very similar characteristics, including a high affinity for hepatic GH receptors, they could be identical. To verify this hypothesis, we sought hGH-V mRNA in placenta. Hybridization experiments were performed between dot-blotted mRNA originating either from placenta or from one pituitary hGH secreting adenoma and synthetic polynucleotide probes corresponding to specific portions of the hGH-V or hGH-N gene sequences. The results indicate that the V gene is indeed expressed in the placenta and, at a very low level, in the pituitary adenoma. Therefore hPGH is most likely the expression product of the hGH-V gene.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Frankenne, Francis
Rentier-Delrue, Françoise ;  Université de Liège - ULiège > Département des sciences de la vie > Biologie et génétique moléculaire - GIGA-R : Coordination scientifique
Scippo, Marie-Louise  ;  Université de Liège - ULiège > Département de sciences des denrées alimentaires > CART, Analyse des denrées alimentaires
Martial, Joseph ;  Université de Liège - ULiège > Département des sciences de la vie > GIGA-R : Biologie et génétique moléculaire
Hennen, Georges ;  Université de Liège - ULiège > Endocrinologie clinique
Language :
English
Title :
Expression of the growth hormone variant gene in human placenta
Publication date :
1987
Journal title :
Journal of Clinical Endocrinology and Metabolism
ISSN :
0021-972X
eISSN :
1945-7197
Publisher :
Endocrine Society, Chevy Chase, United States - Maryland
Volume :
64
Issue :
3
Pages :
635-637
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 24 September 2009

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