doi: 10.1016/0002-9378(75)90989-8.
In vitro biosynthesis of TSH- and LH-releasing factors by the human placenta
- PMID: 1090166
- DOI: 10.1016/0002-9378(75)90989-8
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In vitro biosynthesis of TSH- and LH-releasing factors by the human placenta
Am J Obstet Gynecol.
.
Abstract
Human chorionic membrane and human placental tissue contain substances with the same elution volume as hypothalamic TRF and LRF standards during separation by carboxyl-methyl-cellulose ion-exchange chromatography. Homogenates prepared from fresh human placentas delivered at term caused release of TSH (thyroid-stimulating hormone) and LH (luteinizing hormone) when bioassayed in rats. After dialysis of placental homogentes, synthesis of biologically active TSH-and LH-releasing factors can be shown to occur in vitro following the addition of appropriate precursor amino acids and cofactors.
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