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Immunocytochemical study of the glucocorticoid receptor in rat liver nuclei after hyperthermic stress
Authors:Cvoro Aleksandra  Kora? Aleksandra  Mati? Gordana
Institution:Department of Biochemistry, Institute for Biological Research, 29 Novembra 142 Belgrade, Yugoslavia.
Abstract:The presence of glucocorticoid receptors (GR) in rat liver nuclei over a 24 h time period following hyperthermic stress at 41 degrees C was immunocytologically studied using unfixed nuclear smears. Liver nuclei in unstressed animals were found to be immunonegative for GR. However, intense GR immunopositivity followed by a subsequent gradual decrease in receptor levels was observed in the nuclei of test animals during the first 2 h after stress. This stress-related increase in the receptor nuclear level was greater than the increase seen after dexamethasone administration. These results suggest that hyperthermic stress could potentiate the hormonal stimulation of receptor nuclear translocation.
Keywords:Glucocorticoid receptor  Hyperthermic stress  Immunocytochemistry
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