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XB-ART-31956
J Biol Chem 1978 Jul 10;25313:4521-4.
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Rapid accumulation of vitellogenin messenger RNA during secondary estrogen stimulation of Xenopus laevis.

Baker HJ , Shapiro DJ .


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Accurate quantitation of low concentrations of vitellogenin mRNA by hybridization to vitellogenin cDNA allows analysis of the accumulation of new vitellogenin mRNA sequences throughout secondary estrogen stimulation. Administration of a secondary injection of estradiol-17 beta to male Xenopus laevis which have been withdrawn from estrogen for 60 days results in synthesis of complete vitellogenin mRNA molecules in as little as 1 h after restimulation. Vitellogenin mRNA accumulates at a rate of 13 molecules/cell/min--at least four times the rate observed in primary estrogen stimulation and peaks at a level twice that observed in primary stimulation. Administration of estrogen to male Xenopus laevis evokes stable long lived changes in the pattern of vitellogenin gene expression and constitutes a type of cellular "memory effect."

???displayArticle.pubmedLink??? 659432
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Species referenced: Xenopus laevis