Title : Uterotrophic actions of estradiol and tamoxifen are associated with inhibition of uterine insulin-like growth factor binding protein 3 gene expression.

Pub. Date : 1994 Jun 15

PMID : 7515764






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1 Uterotrophic actions of estradiol and tamoxifen are associated with inhibition of uterine insulin-like growth factor binding protein 3 gene expression. Tamoxifen insulin like growth factor binding protein 3 Homo sapiens
2 We demonstrate here that the uterotrophic agents estradiol and tamoxifen each suppress expression of the IGF binding protein 3 (IGFBP-3) gene in uterus to less than one-third of control values, while oophorectomy or administration of the complete estrogen receptor antagonist ICI 182780, both of which result in uterine involution, are associated with a greater than 3-fold stimulation of uterine IGFBP-3 gene expression. Tamoxifen insulin like growth factor binding protein 3 Homo sapiens
3 We demonstrate here that the uterotrophic agents estradiol and tamoxifen each suppress expression of the IGF binding protein 3 (IGFBP-3) gene in uterus to less than one-third of control values, while oophorectomy or administration of the complete estrogen receptor antagonist ICI 182780, both of which result in uterine involution, are associated with a greater than 3-fold stimulation of uterine IGFBP-3 gene expression. Tamoxifen insulin like growth factor binding protein 3 Homo sapiens
4 We demonstrate here that the uterotrophic agents estradiol and tamoxifen each suppress expression of the IGF binding protein 3 (IGFBP-3) gene in uterus to less than one-third of control values, while oophorectomy or administration of the complete estrogen receptor antagonist ICI 182780, both of which result in uterine involution, are associated with a greater than 3-fold stimulation of uterine IGFBP-3 gene expression. Tamoxifen insulin like growth factor binding protein 3 Homo sapiens
5 The uterotrophic toxicity of chronic estradiol or tamoxifen treatment may be causally related to both the inhibition of uterine IGFBP-3 expression and the stimulation of uterine IGF-I expression by these compounds. Tamoxifen insulin like growth factor binding protein 3 Homo sapiens