Disruption of estrogen receptor gene prevents 17β estradiol-induced angiogenesis in transgenic mice

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Abstract

Estrogen is known to modulate angiogenesis, both under physiological and pathological conditions, and has been demonstrated to augment angiogenesis induced by bFGF in a mouse model. We have modified this mouse model and measured the apparent plasma volume in Matrigel plugs containing basic fibroblast growth factor (bFGF) in wild type and estrogen receptor knockout, ovariectomized mice in the presence and absence of exogenous 17β estradiol. The apparent plasma volume was determined by measuring the fluorescence of the excised plug 10 min. after injection of fluoroscein labeled dextran 150. In wild type mice exogenous 17β estradiol increased the apparent plasma volume of the Matrigel plug and the uterine weight significantly. In the estrogen receptor knockout mice exogenous 17β estradiol caused a small, but significant increase in uterine weight but was without effect on the apparent plasma volume of the Matrigel plug. It is concluded that functional estrogen receptors are essential for the augmentation of bFGF-induced angiogenesis by exogenous 17β estradiol in female mice.

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Johns, A., Freay, A. D., Fraser, W., Korach, K. S., & Rubanyi, G. M. (1996). Disruption of estrogen receptor gene prevents 17β estradiol-induced angiogenesis in transgenic mice. Endocrinology, 137(10), 4511–4513. https://doi.org/10.1210/endo.137.10.8828515

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