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. 1979:117:401-21.
doi: 10.1007/978-1-4757-6589-2_22.

Studies on the mechanism of estradiol uptake by rat uterine cells and on estradiol binding to uterine plasma membranes

R E Muller, T C Johnston, A M Traish, H H Wotiz

Studies on the mechanism of estradiol uptake by rat uterine cells and on estradiol binding to uterine plasma membranes

R E Muller et al. Adv Exp Med Biol. 1979.

Abstract

A method for the preparation of viable uterine cell suspensions is described. Using this system the kinetics of estradiol uptake were studied in order to asses whether the steroid enters uterine cells by passive diffusion (1) or protein mediated diffusion (2). The data presented show that a) the rates of estradiol entry are nonsaturable; b) temperature dependence of uptake kinetics gives a linear Arrhenius plot; c) E2-6-CMO-BSA does not inhibit 3H-E2 uptake; d) uterine plasma membranes do not contain specific estrogen binding sites. Thus, estrogen uptake occures by passive diffusion.

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