[Activation of glucocorticoid cytoreceptors in rat heart].
Accumulation of 3H-dexamethasone by the nuclei in a cell-free system was studied. The increase in temperature from 0 degrees to 20 degrees C and treatment of cytosol by KCl (0.4 M) or theophylline (10mM) significantly increased the absorption the bound hormone by the nuclear fraction. Activation of the steroid-protein complex induced by temperature and addition of theophylline did not change its size. The increase in the ionic strength decreased the Stokes radius from 53 A down to 39.5 A and the sedimentation coefficient value from 7S down to 4S. It is concluded that the heart tissue cytoplasm contains a glucocorticoid receptor.
D000818:Animals; D002467:Cell Nucleus / Q000187:drug effects / Q000378:metabolism; D003600:Cytosol / Q000187:drug effects / Q000378:metabolism; D003907:Dexamethasone / Q000378:metabolism*; D008297:Male; D009206:Myocardium / Q000378:metabolism*; D009994:Osmolar Concentration; D051381:Rats; D011965:Receptors, Glucocorticoid / Q000187:drug effects / Q000378:metabolism*; D011987:Receptors, Steroid / Q000378:metabolism*; D013696:Temperature; D013806:Theophylline / Q000494:pharmacology*
D011965:Receptors, Glucocorticoid; D011987:Receptors, Steroid; D003907:Dexamethasone; D013806:Theophylline
Aktivatsiia gliukokortikoidnogo tsitoretseptora serdtsa krysy.